./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.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/mix000.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/mix000.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix000.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 02:48:19,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:48:19,248 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:48:19,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:48:19,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:48:19,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:48:19,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:48:19,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:48:19,283 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:48:19,286 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:48:19,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:48:19,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:48:19,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:48:19,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:48:19,288 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:48:19,288 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:48:19,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:48:19,289 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:48:19,289 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:48:19,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:48:19,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:48:19,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:48:19,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:48:19,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:48:19,291 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:48:19,291 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:48:19,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:48:19,291 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:48:19,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:48:19,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:48:19,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:48:19,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:48:19,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:48:19,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:48:19,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:48:19,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:48:19,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:48:19,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:48:19,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:48:19,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:48:19,295 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:48:19,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:48:19,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:48:19,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:48:19,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:48:19,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:48:19,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:48:19,525 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:48:19,526 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:48:19,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-28 02:48:20,476 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:48:20,679 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:48:20,680 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-28 02:48:20,689 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247bb18ad/fb96f271815041d589c685eca17e6e26/FLAG43dfa1185 [2024-06-28 02:48:20,701 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247bb18ad/fb96f271815041d589c685eca17e6e26 [2024-06-28 02:48:20,705 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:48:20,705 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:48:20,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix000.opt.yml/witness.yml [2024-06-28 02:48:20,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:48:20,848 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:48:20,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:48:20,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:48:20,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:48:20,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:48:20" (1/2) ... [2024-06-28 02:48:20,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab172c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:20, skipping insertion in model container [2024-06-28 02:48:20,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:48:20" (1/2) ... [2024-06-28 02:48:20,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2244b4a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:20, skipping insertion in model container [2024-06-28 02:48:20,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:48:20" (2/2) ... [2024-06-28 02:48:20,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab172c3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:20, skipping insertion in model container [2024-06-28 02:48:20,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:48:20" (2/2) ... [2024-06-28 02:48:20,868 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:48:20,920 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:48:20,921 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-28 02:48:20,921 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) [2024-06-28 02:48:20,921 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:48:20,921 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-28 02:48:20,960 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:48:21,278 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:48:21,284 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:48:21,388 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:48:21,411 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:48:21,411 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21 WrapperNode [2024-06-28 02:48:21,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:48:21,412 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:48:21,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:48:21,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:48:21,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (1/1) ... [2024-06-28 02:48:21,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (1/1) ... [2024-06-28 02:48:21,475 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-28 02:48:21,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:48:21,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:48:21,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:48:21,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:48:21,496 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (1/1) ... [2024-06-28 02:48:21,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (1/1) ... [2024-06-28 02:48:21,499 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (1/1) ... [2024-06-28 02:48:21,514 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 02:48:21,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (1/1) ... [2024-06-28 02:48:21,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (1/1) ... [2024-06-28 02:48:21,520 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (1/1) ... [2024-06-28 02:48:21,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (1/1) ... [2024-06-28 02:48:21,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (1/1) ... [2024-06-28 02:48:21,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (1/1) ... [2024-06-28 02:48:21,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:48:21,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:48:21,550 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:48:21,550 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:48:21,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (1/1) ... [2024-06-28 02:48:21,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:48:21,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:48:21,576 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 02:48:21,594 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 02:48:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:48:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:48:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:48:21,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:48:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:48:21,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:48:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:48:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:48:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:48:21,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:48:21,611 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 02:48:21,725 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:48:21,727 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:48:21,969 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:48:21,970 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:48:22,114 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:48:22,115 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:48:22,117 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:48:22 BoogieIcfgContainer [2024-06-28 02:48:22,117 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:48:22,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:48:22,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:48:22,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:48:22,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:48:20" (1/4) ... [2024-06-28 02:48:22,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db6e3dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:48:22, skipping insertion in model container [2024-06-28 02:48:22,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:48:20" (2/4) ... [2024-06-28 02:48:22,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db6e3dd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:48:22, skipping insertion in model container [2024-06-28 02:48:22,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21" (3/4) ... [2024-06-28 02:48:22,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db6e3dd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:48:22, skipping insertion in model container [2024-06-28 02:48:22,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:48:22" (4/4) ... [2024-06-28 02:48:22,131 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.opt.i [2024-06-28 02:48:22,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:48:22,143 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:48:22,143 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:48:22,176 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:48:22,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 02:48:22,222 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 02:48:22,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:48:22,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:48:22,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 02:48:22,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 02:48:22,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:48:22,245 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;@2144c30d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:48:22,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 02:48:22,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:48:22,248 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 02:48:22,248 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:48:22,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:22,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:48:22,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:22,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:22,253 INFO L85 PathProgramCache]: Analyzing trace with hash 362681797, now seen corresponding path program 1 times [2024-06-28 02:48:22,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:22,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530364148] [2024-06-28 02:48:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:22,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:23,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:23,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530364148] [2024-06-28 02:48:23,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530364148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:23,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:23,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:48:23,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216682495] [2024-06-28 02:48:23,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:23,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:48:23,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:23,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:48:23,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:48:23,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-28 02:48:23,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:23,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:23,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-28 02:48:23,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:23,478 INFO L124 PetriNetUnfolderBase]: 131/261 cut-off events. [2024-06-28 02:48:23,478 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 02:48:23,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 261 events. 131/261 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1019 event pairs, 75 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 506. Up to 235 conditions per place. [2024-06-28 02:48:23,483 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 20 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 02:48:23,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 113 flow [2024-06-28 02:48:23,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:48:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:48:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-06-28 02:48:23,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6236559139784946 [2024-06-28 02:48:23,494 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 58 transitions. [2024-06-28 02:48:23,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 113 flow [2024-06-28 02:48:23,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:48:23,498 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 02:48:23,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-28 02:48:23,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 02:48:23,502 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 02:48:23,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:23,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:23,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:23,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:48:23,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:23,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:23,503 INFO L85 PathProgramCache]: Analyzing trace with hash 644883556, now seen corresponding path program 1 times [2024-06-28 02:48:23,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:23,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140098457] [2024-06-28 02:48:23,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:23,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:24,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:24,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:24,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140098457] [2024-06-28 02:48:24,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140098457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:24,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:24,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:48:24,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514593326] [2024-06-28 02:48:24,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:24,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:48:24,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:24,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:48:24,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:48:24,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 02:48:24,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:24,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:24,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 02:48:24,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:24,321 INFO L124 PetriNetUnfolderBase]: 186/341 cut-off events. [2024-06-28 02:48:24,322 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-28 02:48:24,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 341 events. 186/341 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1272 event pairs, 94 based on Foata normal form. 2/341 useless extension candidates. Maximal degree in co-relation 771. Up to 319 conditions per place. [2024-06-28 02:48:24,324 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 02:48:24,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-28 02:48:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:48:24,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:48:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-28 02:48:24,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-06-28 02:48:24,326 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 69 transitions. [2024-06-28 02:48:24,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-28 02:48:24,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:48:24,327 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 02:48:24,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 02:48:24,328 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 02:48:24,328 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 02:48:24,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:24,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:24,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:24,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:48:24,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:24,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:24,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1483445320, now seen corresponding path program 1 times [2024-06-28 02:48:24,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:24,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139226680] [2024-06-28 02:48:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:24,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:25,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139226680] [2024-06-28 02:48:25,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139226680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:25,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:25,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:48:25,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515786017] [2024-06-28 02:48:25,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:25,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:48:25,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:25,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:48:25,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:48:25,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 02:48:25,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:25,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:25,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 02:48:25,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:25,227 INFO L124 PetriNetUnfolderBase]: 180/331 cut-off events. [2024-06-28 02:48:25,227 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-06-28 02:48:25,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 331 events. 180/331 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1222 event pairs, 52 based on Foata normal form. 4/334 useless extension candidates. Maximal degree in co-relation 827. Up to 291 conditions per place. [2024-06-28 02:48:25,231 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-28 02:48:25,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 211 flow [2024-06-28 02:48:25,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:48:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:48:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-28 02:48:25,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-06-28 02:48:25,235 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 85 transitions. [2024-06-28 02:48:25,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 211 flow [2024-06-28 02:48:25,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 02:48:25,238 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-28 02:48:25,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-28 02:48:25,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-28 02:48:25,240 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-28 02:48:25,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:25,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:25,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:25,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:48:25,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:25,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:25,241 INFO L85 PathProgramCache]: Analyzing trace with hash -105274318, now seen corresponding path program 1 times [2024-06-28 02:48:25,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:25,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725278226] [2024-06-28 02:48:25,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:25,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:25,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:25,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725278226] [2024-06-28 02:48:25,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725278226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:25,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:25,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:48:25,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334997749] [2024-06-28 02:48:25,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:25,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:48:25,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:48:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:48:25,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 02:48:25,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:25,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:25,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 02:48:25,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:25,946 INFO L124 PetriNetUnfolderBase]: 137/283 cut-off events. [2024-06-28 02:48:25,946 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2024-06-28 02:48:25,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 283 events. 137/283 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1094 event pairs, 57 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 749. Up to 243 conditions per place. [2024-06-28 02:48:25,948 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 24 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-28 02:48:25,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 197 flow [2024-06-28 02:48:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:48:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:48:25,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-06-28 02:48:25,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47096774193548385 [2024-06-28 02:48:25,951 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 5 states and 73 transitions. [2024-06-28 02:48:25,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 197 flow [2024-06-28 02:48:25,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 182 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:25,954 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 131 flow [2024-06-28 02:48:25,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-28 02:48:25,955 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-28 02:48:25,955 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 131 flow [2024-06-28 02:48:25,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:25,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:25,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:25,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:48:25,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:25,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:25,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1894897058, now seen corresponding path program 1 times [2024-06-28 02:48:25,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:25,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763838520] [2024-06-28 02:48:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:25,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:26,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:26,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763838520] [2024-06-28 02:48:26,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763838520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:26,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:26,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:48:26,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452383010] [2024-06-28 02:48:26,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:26,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:48:26,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:26,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:48:26,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:48:27,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 02:48:27,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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 02:48:27,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:27,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 02:48:27,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:27,219 INFO L124 PetriNetUnfolderBase]: 174/320 cut-off events. [2024-06-28 02:48:27,220 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-06-28 02:48:27,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 320 events. 174/320 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1142 event pairs, 29 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 922. Up to 262 conditions per place. [2024-06-28 02:48:27,221 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-06-28 02:48:27,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 265 flow [2024-06-28 02:48:27,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:27,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 02:48:27,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023041474654378 [2024-06-28 02:48:27,223 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 131 flow. Second operand 7 states and 109 transitions. [2024-06-28 02:48:27,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 265 flow [2024-06-28 02:48:27,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 254 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:27,225 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 147 flow [2024-06-28 02:48:27,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=147, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-28 02:48:27,226 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-28 02:48:27,226 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 147 flow [2024-06-28 02:48:27,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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 02:48:27,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:27,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:27,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:48:27,227 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:27,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:27,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1042189699, now seen corresponding path program 1 times [2024-06-28 02:48:27,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:27,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644835534] [2024-06-28 02:48:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:27,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:28,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644835534] [2024-06-28 02:48:28,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644835534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:28,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:28,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:48:28,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993961581] [2024-06-28 02:48:28,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:28,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:48:28,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:28,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:48:28,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:48:28,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 02:48:28,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:28,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:28,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 02:48:28,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:28,210 INFO L124 PetriNetUnfolderBase]: 131/270 cut-off events. [2024-06-28 02:48:28,210 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-28 02:48:28,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 270 events. 131/270 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1021 event pairs, 37 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 821. Up to 229 conditions per place. [2024-06-28 02:48:28,211 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 26 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-28 02:48:28,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 237 flow [2024-06-28 02:48:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:48:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:48:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-28 02:48:28,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 02:48:28,213 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 147 flow. Second operand 6 states and 84 transitions. [2024-06-28 02:48:28,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 237 flow [2024-06-28 02:48:28,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 215 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:48:28,216 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 158 flow [2024-06-28 02:48:28,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-28 02:48:28,218 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-28 02:48:28,218 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 158 flow [2024-06-28 02:48:28,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:28,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:28,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:28,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:48:28,219 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:28,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:28,220 INFO L85 PathProgramCache]: Analyzing trace with hash -761076105, now seen corresponding path program 1 times [2024-06-28 02:48:28,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:28,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50401752] [2024-06-28 02:48:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:28,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:28,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:28,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50401752] [2024-06-28 02:48:28,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50401752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:28,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:28,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:48:28,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657012793] [2024-06-28 02:48:28,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:28,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:48:28,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:28,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:48:28,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:48:28,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:28,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 158 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 02:48:28,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:28,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:28,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:28,903 INFO L124 PetriNetUnfolderBase]: 173/319 cut-off events. [2024-06-28 02:48:28,903 INFO L125 PetriNetUnfolderBase]: For 774/774 co-relation queries the response was YES. [2024-06-28 02:48:28,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1062 conditions, 319 events. 173/319 cut-off events. For 774/774 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1135 event pairs, 44 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 1041. Up to 294 conditions per place. [2024-06-28 02:48:28,905 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-28 02:48:28,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 272 flow [2024-06-28 02:48:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:48:28,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:48:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-28 02:48:28,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-28 02:48:28,907 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 158 flow. Second operand 6 states and 77 transitions. [2024-06-28 02:48:28,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 272 flow [2024-06-28 02:48:28,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 255 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:48:28,910 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 174 flow [2024-06-28 02:48:28,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=6, PETRI_FLOW=174, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-28 02:48:28,910 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 02:48:28,910 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 174 flow [2024-06-28 02:48:28,911 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 02:48:28,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:28,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:28,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:48:28,911 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:28,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:28,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1910634641, now seen corresponding path program 2 times [2024-06-28 02:48:28,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:28,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529656015] [2024-06-28 02:48:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:28,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:29,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:29,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529656015] [2024-06-28 02:48:29,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529656015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:29,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:29,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:48:29,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815161470] [2024-06-28 02:48:29,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:29,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:48:29,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:29,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:48:29,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:48:29,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:29,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 174 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 02:48:29,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:29,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:29,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:29,683 INFO L124 PetriNetUnfolderBase]: 171/317 cut-off events. [2024-06-28 02:48:29,683 INFO L125 PetriNetUnfolderBase]: For 1008/1008 co-relation queries the response was YES. [2024-06-28 02:48:29,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1112 conditions, 317 events. 171/317 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1137 event pairs, 45 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 1090. Up to 285 conditions per place. [2024-06-28 02:48:29,685 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 30 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2024-06-28 02:48:29,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 303 flow [2024-06-28 02:48:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:29,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-28 02:48:29,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-28 02:48:29,686 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 174 flow. Second operand 7 states and 85 transitions. [2024-06-28 02:48:29,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 303 flow [2024-06-28 02:48:29,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 282 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:48:29,688 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 218 flow [2024-06-28 02:48:29,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-06-28 02:48:29,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-28 02:48:29,689 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 218 flow [2024-06-28 02:48:29,689 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 02:48:29,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:29,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:29,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:48:29,690 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:29,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:29,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1997840881, now seen corresponding path program 1 times [2024-06-28 02:48:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041560130] [2024-06-28 02:48:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:30,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:30,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041560130] [2024-06-28 02:48:30,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041560130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:30,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:30,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:30,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834775256] [2024-06-28 02:48:30,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:30,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:30,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:30,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:30,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:30,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:30,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 218 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 02:48:30,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:30,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:30,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:30,399 INFO L124 PetriNetUnfolderBase]: 189/351 cut-off events. [2024-06-28 02:48:30,400 INFO L125 PetriNetUnfolderBase]: For 1345/1345 co-relation queries the response was YES. [2024-06-28 02:48:30,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 351 events. 189/351 cut-off events. For 1345/1345 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1306 event pairs, 44 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 1286. Up to 301 conditions per place. [2024-06-28 02:48:30,402 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 42 selfloop transitions, 17 changer transitions 0/62 dead transitions. [2024-06-28 02:48:30,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 428 flow [2024-06-28 02:48:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:30,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 02:48:30,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 02:48:30,403 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 218 flow. Second operand 8 states and 102 transitions. [2024-06-28 02:48:30,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 428 flow [2024-06-28 02:48:30,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 402 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:30,406 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 311 flow [2024-06-28 02:48:30,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=311, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-28 02:48:30,407 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-06-28 02:48:30,407 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 311 flow [2024-06-28 02:48:30,407 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 02:48:30,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:30,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:30,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:48:30,408 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:30,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:30,408 INFO L85 PathProgramCache]: Analyzing trace with hash 809335549, now seen corresponding path program 2 times [2024-06-28 02:48:30,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:30,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254358623] [2024-06-28 02:48:30,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:30,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:30,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:30,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254358623] [2024-06-28 02:48:30,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254358623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:30,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:30,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:30,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236354826] [2024-06-28 02:48:30,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:30,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:30,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:30,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:30,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:30,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 311 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 02:48:30,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:30,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:30,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:31,205 INFO L124 PetriNetUnfolderBase]: 195/363 cut-off events. [2024-06-28 02:48:31,205 INFO L125 PetriNetUnfolderBase]: For 1785/1785 co-relation queries the response was YES. [2024-06-28 02:48:31,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 363 events. 195/363 cut-off events. For 1785/1785 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1367 event pairs, 43 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 1433. Up to 303 conditions per place. [2024-06-28 02:48:31,208 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 41 selfloop transitions, 19 changer transitions 0/63 dead transitions. [2024-06-28 02:48:31,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 477 flow [2024-06-28 02:48:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:31,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-28 02:48:31,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:48:31,209 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 311 flow. Second operand 7 states and 91 transitions. [2024-06-28 02:48:31,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 477 flow [2024-06-28 02:48:31,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 453 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:31,212 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 354 flow [2024-06-28 02:48:31,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-28 02:48:31,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-28 02:48:31,213 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 354 flow [2024-06-28 02:48:31,213 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 02:48:31,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:31,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:31,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:48:31,213 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:31,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:31,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1106520429, now seen corresponding path program 3 times [2024-06-28 02:48:31,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:31,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969306580] [2024-06-28 02:48:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:31,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:31,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:31,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969306580] [2024-06-28 02:48:31,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969306580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:31,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:31,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777172115] [2024-06-28 02:48:31,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:31,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:31,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:31,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:31,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 354 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 02:48:31,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:31,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:31,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:32,080 INFO L124 PetriNetUnfolderBase]: 210/392 cut-off events. [2024-06-28 02:48:32,080 INFO L125 PetriNetUnfolderBase]: For 2322/2322 co-relation queries the response was YES. [2024-06-28 02:48:32,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1663 conditions, 392 events. 210/392 cut-off events. For 2322/2322 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1533 event pairs, 47 based on Foata normal form. 2/393 useless extension candidates. Maximal degree in co-relation 1634. Up to 327 conditions per place. [2024-06-28 02:48:32,082 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 44 selfloop transitions, 22 changer transitions 0/69 dead transitions. [2024-06-28 02:48:32,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 581 flow [2024-06-28 02:48:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:32,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 02:48:32,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-28 02:48:32,084 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 354 flow. Second operand 8 states and 101 transitions. [2024-06-28 02:48:32,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 581 flow [2024-06-28 02:48:32,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 518 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:48:32,087 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 439 flow [2024-06-28 02:48:32,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=439, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-06-28 02:48:32,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-28 02:48:32,088 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 439 flow [2024-06-28 02:48:32,088 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 02:48:32,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:32,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:32,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:48:32,089 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:32,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:32,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1106520212, now seen corresponding path program 1 times [2024-06-28 02:48:32,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:32,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442394416] [2024-06-28 02:48:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:32,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:32,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:32,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442394416] [2024-06-28 02:48:32,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442394416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:32,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:32,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:32,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506049447] [2024-06-28 02:48:32,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:32,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:32,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:32,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:32,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:32,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:32,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 439 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 02:48:32,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:32,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:32,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:33,151 INFO L124 PetriNetUnfolderBase]: 213/397 cut-off events. [2024-06-28 02:48:33,151 INFO L125 PetriNetUnfolderBase]: For 2236/2236 co-relation queries the response was YES. [2024-06-28 02:48:33,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1690 conditions, 397 events. 213/397 cut-off events. For 2236/2236 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1541 event pairs, 44 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 1658. Up to 352 conditions per place. [2024-06-28 02:48:33,154 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 51 selfloop transitions, 16 changer transitions 0/70 dead transitions. [2024-06-28 02:48:33,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 603 flow [2024-06-28 02:48:33,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-28 02:48:33,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-28 02:48:33,155 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 439 flow. Second operand 7 states and 87 transitions. [2024-06-28 02:48:33,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 603 flow [2024-06-28 02:48:33,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 571 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 02:48:33,159 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 459 flow [2024-06-28 02:48:33,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=459, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-06-28 02:48:33,161 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-28 02:48:33,161 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 459 flow [2024-06-28 02:48:33,161 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 02:48:33,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:33,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:33,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:48:33,162 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:33,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:33,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1780489524, now seen corresponding path program 2 times [2024-06-28 02:48:33,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:33,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381668040] [2024-06-28 02:48:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:33,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:33,970 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 02:48:33,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:33,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381668040] [2024-06-28 02:48:33,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381668040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:33,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:33,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:33,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719234957] [2024-06-28 02:48:33,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:33,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:33,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:33,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:34,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:34,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 459 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 02:48:34,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:34,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:34,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:34,181 INFO L124 PetriNetUnfolderBase]: 216/402 cut-off events. [2024-06-28 02:48:34,181 INFO L125 PetriNetUnfolderBase]: For 2618/2618 co-relation queries the response was YES. [2024-06-28 02:48:34,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 402 events. 216/402 cut-off events. For 2618/2618 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1571 event pairs, 47 based on Foata normal form. 1/402 useless extension candidates. Maximal degree in co-relation 1718. Up to 353 conditions per place. [2024-06-28 02:48:34,184 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 49 selfloop transitions, 18 changer transitions 0/70 dead transitions. [2024-06-28 02:48:34,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 621 flow [2024-06-28 02:48:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-28 02:48:34,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2024-06-28 02:48:34,185 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 459 flow. Second operand 7 states and 86 transitions. [2024-06-28 02:48:34,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 621 flow [2024-06-28 02:48:34,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 587 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:48:34,190 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 484 flow [2024-06-28 02:48:34,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-06-28 02:48:34,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-28 02:48:34,191 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 484 flow [2024-06-28 02:48:34,191 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 02:48:34,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:34,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:34,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:48:34,192 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:34,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:34,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1780489741, now seen corresponding path program 4 times [2024-06-28 02:48:34,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:34,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745773671] [2024-06-28 02:48:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:34,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:34,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:34,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745773671] [2024-06-28 02:48:34,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745773671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:34,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:34,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:34,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872239447] [2024-06-28 02:48:34,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:34,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:34,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:34,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:34,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:34,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:34,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 484 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 02:48:34,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:34,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:34,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:35,063 INFO L124 PetriNetUnfolderBase]: 227/424 cut-off events. [2024-06-28 02:48:35,063 INFO L125 PetriNetUnfolderBase]: For 3244/3244 co-relation queries the response was YES. [2024-06-28 02:48:35,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1926 conditions, 424 events. 227/424 cut-off events. For 3244/3244 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1707 event pairs, 51 based on Foata normal form. 2/425 useless extension candidates. Maximal degree in co-relation 1891. Up to 319 conditions per place. [2024-06-28 02:48:35,066 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 41 selfloop transitions, 33 changer transitions 0/77 dead transitions. [2024-06-28 02:48:35,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 77 transitions, 720 flow [2024-06-28 02:48:35,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:35,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 02:48:35,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-28 02:48:35,067 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 484 flow. Second operand 8 states and 101 transitions. [2024-06-28 02:48:35,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 77 transitions, 720 flow [2024-06-28 02:48:35,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 77 transitions, 677 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:48:35,072 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 556 flow [2024-06-28 02:48:35,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=556, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-06-28 02:48:35,072 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-28 02:48:35,073 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 556 flow [2024-06-28 02:48:35,073 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 02:48:35,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:35,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:35,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:48:35,073 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:35,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:35,074 INFO L85 PathProgramCache]: Analyzing trace with hash 816700436, now seen corresponding path program 3 times [2024-06-28 02:48:35,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:35,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113317697] [2024-06-28 02:48:35,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:35,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:35,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:35,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113317697] [2024-06-28 02:48:35,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113317697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:35,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:35,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:35,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199048941] [2024-06-28 02:48:35,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:35,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:35,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:35,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:35,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:35,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:35,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 556 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 02:48:35,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:35,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:35,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:36,027 INFO L124 PetriNetUnfolderBase]: 225/421 cut-off events. [2024-06-28 02:48:36,027 INFO L125 PetriNetUnfolderBase]: For 3699/3699 co-relation queries the response was YES. [2024-06-28 02:48:36,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2002 conditions, 421 events. 225/421 cut-off events. For 3699/3699 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1680 event pairs, 48 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1966. Up to 357 conditions per place. [2024-06-28 02:48:36,030 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 52 selfloop transitions, 23 changer transitions 0/78 dead transitions. [2024-06-28 02:48:36,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 748 flow [2024-06-28 02:48:36,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:36,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:36,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-28 02:48:36,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-28 02:48:36,031 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 556 flow. Second operand 7 states and 87 transitions. [2024-06-28 02:48:36,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 748 flow [2024-06-28 02:48:36,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 78 transitions, 710 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 02:48:36,036 INFO L231 Difference]: Finished difference. Result has 81 places, 72 transitions, 613 flow [2024-06-28 02:48:36,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=613, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2024-06-28 02:48:36,037 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-28 02:48:36,037 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 613 flow [2024-06-28 02:48:36,037 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 02:48:36,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:36,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:36,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:48:36,038 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:36,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:36,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2008715371, now seen corresponding path program 5 times [2024-06-28 02:48:36,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:36,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937151388] [2024-06-28 02:48:36,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:36,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:36,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:36,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937151388] [2024-06-28 02:48:36,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937151388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:36,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:36,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:36,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524365013] [2024-06-28 02:48:36,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:36,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:36,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:36,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:36,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:36,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:36,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 613 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 02:48:36,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:36,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:36,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:36,860 INFO L124 PetriNetUnfolderBase]: 221/415 cut-off events. [2024-06-28 02:48:36,861 INFO L125 PetriNetUnfolderBase]: For 3984/3984 co-relation queries the response was YES. [2024-06-28 02:48:36,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 415 events. 221/415 cut-off events. For 3984/3984 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1650 event pairs, 44 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 1996. Up to 340 conditions per place. [2024-06-28 02:48:36,863 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 57 selfloop transitions, 24 changer transitions 0/84 dead transitions. [2024-06-28 02:48:36,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 809 flow [2024-06-28 02:48:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-28 02:48:36,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-28 02:48:36,865 INFO L175 Difference]: Start difference. First operand has 81 places, 72 transitions, 613 flow. Second operand 8 states and 103 transitions. [2024-06-28 02:48:36,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 809 flow [2024-06-28 02:48:36,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 772 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:36,870 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 629 flow [2024-06-28 02:48:36,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=629, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-06-28 02:48:36,871 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-28 02:48:36,871 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 629 flow [2024-06-28 02:48:36,871 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 02:48:36,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:36,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:36,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:48:36,872 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:36,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash 816969826, now seen corresponding path program 1 times [2024-06-28 02:48:36,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:36,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991160567] [2024-06-28 02:48:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:36,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:38,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:38,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991160567] [2024-06-28 02:48:38,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991160567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:38,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:38,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:38,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761895678] [2024-06-28 02:48:38,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:38,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:38,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:38,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:38,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:38,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 02:48:38,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 629 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 02:48:38,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:38,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 02:48:38,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:38,993 INFO L124 PetriNetUnfolderBase]: 203/392 cut-off events. [2024-06-28 02:48:38,994 INFO L125 PetriNetUnfolderBase]: For 4214/4219 co-relation queries the response was YES. [2024-06-28 02:48:38,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 392 events. 203/392 cut-off events. For 4214/4219 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1600 event pairs, 47 based on Foata normal form. 6/394 useless extension candidates. Maximal degree in co-relation 1908. Up to 333 conditions per place. [2024-06-28 02:48:38,996 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 55 selfloop transitions, 13 changer transitions 0/81 dead transitions. [2024-06-28 02:48:38,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 791 flow [2024-06-28 02:48:38,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 02:48:38,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-28 02:48:38,998 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 629 flow. Second operand 8 states and 101 transitions. [2024-06-28 02:48:38,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 791 flow [2024-06-28 02:48:39,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 81 transitions, 709 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:39,003 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 592 flow [2024-06-28 02:48:39,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=592, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2024-06-28 02:48:39,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-28 02:48:39,003 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 592 flow [2024-06-28 02:48:39,004 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 02:48:39,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:39,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:39,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:48:39,004 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:39,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:39,004 INFO L85 PathProgramCache]: Analyzing trace with hash 57428754, now seen corresponding path program 1 times [2024-06-28 02:48:39,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:39,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999136513] [2024-06-28 02:48:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:39,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:39,741 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 02:48:39,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:39,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999136513] [2024-06-28 02:48:39,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999136513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:39,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:39,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:39,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610093940] [2024-06-28 02:48:39,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:39,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:39,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:39,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:39,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:39,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:39,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 592 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 02:48:39,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:39,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:39,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:40,121 INFO L124 PetriNetUnfolderBase]: 217/409 cut-off events. [2024-06-28 02:48:40,121 INFO L125 PetriNetUnfolderBase]: For 4251/4251 co-relation queries the response was YES. [2024-06-28 02:48:40,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 409 events. 217/409 cut-off events. For 4251/4251 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1639 event pairs, 41 based on Foata normal form. 1/409 useless extension candidates. Maximal degree in co-relation 1983. Up to 337 conditions per place. [2024-06-28 02:48:40,124 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 66 selfloop transitions, 21 changer transitions 0/90 dead transitions. [2024-06-28 02:48:40,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 90 transitions, 830 flow [2024-06-28 02:48:40,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-28 02:48:40,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-28 02:48:40,126 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 592 flow. Second operand 8 states and 103 transitions. [2024-06-28 02:48:40,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 90 transitions, 830 flow [2024-06-28 02:48:40,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 777 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:40,131 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 614 flow [2024-06-28 02:48:40,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=614, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-06-28 02:48:40,131 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-28 02:48:40,131 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 614 flow [2024-06-28 02:48:40,132 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 02:48:40,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:40,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:40,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:48:40,132 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:40,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:40,132 INFO L85 PathProgramCache]: Analyzing trace with hash -680400256, now seen corresponding path program 1 times [2024-06-28 02:48:40,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:40,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903989082] [2024-06-28 02:48:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:40,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:40,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:40,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903989082] [2024-06-28 02:48:40,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903989082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:40,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:40,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:40,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227721023] [2024-06-28 02:48:40,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:40,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:40,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:40,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:40,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:40,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:40,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 614 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 02:48:40,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:40,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:40,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:41,153 INFO L124 PetriNetUnfolderBase]: 223/421 cut-off events. [2024-06-28 02:48:41,153 INFO L125 PetriNetUnfolderBase]: For 4982/4982 co-relation queries the response was YES. [2024-06-28 02:48:41,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 421 events. 223/421 cut-off events. For 4982/4982 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1701 event pairs, 38 based on Foata normal form. 2/422 useless extension candidates. Maximal degree in co-relation 2078. Up to 313 conditions per place. [2024-06-28 02:48:41,156 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 63 selfloop transitions, 26 changer transitions 0/92 dead transitions. [2024-06-28 02:48:41,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 92 transitions, 854 flow [2024-06-28 02:48:41,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-28 02:48:41,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-28 02:48:41,159 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 614 flow. Second operand 8 states and 103 transitions. [2024-06-28 02:48:41,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 92 transitions, 854 flow [2024-06-28 02:48:41,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 795 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:41,165 INFO L231 Difference]: Finished difference. Result has 90 places, 79 transitions, 646 flow [2024-06-28 02:48:41,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=646, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2024-06-28 02:48:41,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-28 02:48:41,165 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 646 flow [2024-06-28 02:48:41,166 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 02:48:41,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:41,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:41,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:48:41,166 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:41,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:41,166 INFO L85 PathProgramCache]: Analyzing trace with hash 57606570, now seen corresponding path program 2 times [2024-06-28 02:48:41,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:41,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263521460] [2024-06-28 02:48:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:41,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:41,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:41,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263521460] [2024-06-28 02:48:41,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263521460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:41,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:41,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:41,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525861721] [2024-06-28 02:48:41,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:41,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:41,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:41,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:41,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:42,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:42,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 646 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 02:48:42,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:42,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:42,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:42,234 INFO L124 PetriNetUnfolderBase]: 229/431 cut-off events. [2024-06-28 02:48:42,234 INFO L125 PetriNetUnfolderBase]: For 5666/5666 co-relation queries the response was YES. [2024-06-28 02:48:42,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2259 conditions, 431 events. 229/431 cut-off events. For 5666/5666 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1743 event pairs, 40 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 2217. Up to 329 conditions per place. [2024-06-28 02:48:42,237 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 31 changer transitions 0/93 dead transitions. [2024-06-28 02:48:42,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 890 flow [2024-06-28 02:48:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 02:48:42,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 02:48:42,238 INFO L175 Difference]: Start difference. First operand has 90 places, 79 transitions, 646 flow. Second operand 8 states and 102 transitions. [2024-06-28 02:48:42,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 890 flow [2024-06-28 02:48:42,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 827 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:42,244 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 688 flow [2024-06-28 02:48:42,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=688, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2024-06-28 02:48:42,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-28 02:48:42,245 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 688 flow [2024-06-28 02:48:42,245 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 02:48:42,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:42,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:42,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:48:42,245 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:42,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash -680220518, now seen corresponding path program 1 times [2024-06-28 02:48:42,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:42,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879571082] [2024-06-28 02:48:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:42,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:42,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:42,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:42,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879571082] [2024-06-28 02:48:42,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879571082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:42,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:42,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:42,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487572194] [2024-06-28 02:48:42,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:42,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:42,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:42,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:42,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:43,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:43,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 688 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 02:48:43,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:43,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:43,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:43,259 INFO L124 PetriNetUnfolderBase]: 232/436 cut-off events. [2024-06-28 02:48:43,259 INFO L125 PetriNetUnfolderBase]: For 6253/6253 co-relation queries the response was YES. [2024-06-28 02:48:43,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2376 conditions, 436 events. 232/436 cut-off events. For 6253/6253 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1784 event pairs, 39 based on Foata normal form. 1/436 useless extension candidates. Maximal degree in co-relation 2333. Up to 382 conditions per place. [2024-06-28 02:48:43,262 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 72 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-28 02:48:43,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 908 flow [2024-06-28 02:48:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 02:48:43,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-28 02:48:43,263 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 688 flow. Second operand 8 states and 97 transitions. [2024-06-28 02:48:43,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 908 flow [2024-06-28 02:48:43,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 93 transitions, 827 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:43,269 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 670 flow [2024-06-28 02:48:43,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=670, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2024-06-28 02:48:43,269 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-28 02:48:43,269 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 670 flow [2024-06-28 02:48:43,269 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 02:48:43,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:43,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:43,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:48:43,270 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:43,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:43,271 INFO L85 PathProgramCache]: Analyzing trace with hash 57613080, now seen corresponding path program 3 times [2024-06-28 02:48:43,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:43,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039225696] [2024-06-28 02:48:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:43,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:44,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:44,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039225696] [2024-06-28 02:48:44,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039225696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:44,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:44,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:44,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406927036] [2024-06-28 02:48:44,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:44,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:44,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:44,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:44,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:44,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:44,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 670 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 02:48:44,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:44,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:44,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:44,282 INFO L124 PetriNetUnfolderBase]: 238/446 cut-off events. [2024-06-28 02:48:44,283 INFO L125 PetriNetUnfolderBase]: For 6532/6532 co-relation queries the response was YES. [2024-06-28 02:48:44,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 446 events. 238/446 cut-off events. For 6532/6532 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1823 event pairs, 39 based on Foata normal form. 1/446 useless extension candidates. Maximal degree in co-relation 2369. Up to 322 conditions per place. [2024-06-28 02:48:44,286 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 36 changer transitions 0/98 dead transitions. [2024-06-28 02:48:44,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 98 transitions, 918 flow [2024-06-28 02:48:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 02:48:44,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 02:48:44,287 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 670 flow. Second operand 8 states and 102 transitions. [2024-06-28 02:48:44,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 98 transitions, 918 flow [2024-06-28 02:48:44,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 871 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:44,293 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 751 flow [2024-06-28 02:48:44,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=751, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2024-06-28 02:48:44,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-28 02:48:44,293 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 751 flow [2024-06-28 02:48:44,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:44,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:44,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:44,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:48:44,294 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:44,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:44,294 INFO L85 PathProgramCache]: Analyzing trace with hash -452326126, now seen corresponding path program 4 times [2024-06-28 02:48:44,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:44,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40705728] [2024-06-28 02:48:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:44,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:45,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:45,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40705728] [2024-06-28 02:48:45,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40705728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:45,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:45,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:45,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22446578] [2024-06-28 02:48:45,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:45,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:45,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:45,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:45,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:45,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:45,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 751 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 02:48:45,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:45,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:45,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:45,387 INFO L124 PetriNetUnfolderBase]: 244/456 cut-off events. [2024-06-28 02:48:45,387 INFO L125 PetriNetUnfolderBase]: For 7683/7683 co-relation queries the response was YES. [2024-06-28 02:48:45,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 456 events. 244/456 cut-off events. For 7683/7683 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1870 event pairs, 45 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2569. Up to 346 conditions per place. [2024-06-28 02:48:45,391 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 33 changer transitions 0/100 dead transitions. [2024-06-28 02:48:45,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 100 transitions, 1021 flow [2024-06-28 02:48:45,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 02:48:45,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-28 02:48:45,395 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 751 flow. Second operand 8 states and 101 transitions. [2024-06-28 02:48:45,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 100 transitions, 1021 flow [2024-06-28 02:48:45,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 100 transitions, 951 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 02:48:45,404 INFO L231 Difference]: Finished difference. Result has 100 places, 91 transitions, 799 flow [2024-06-28 02:48:45,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=799, PETRI_PLACES=100, PETRI_TRANSITIONS=91} [2024-06-28 02:48:45,405 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-28 02:48:45,405 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 91 transitions, 799 flow [2024-06-28 02:48:45,405 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 02:48:45,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:45,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:45,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:48:45,406 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:45,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:45,406 INFO L85 PathProgramCache]: Analyzing trace with hash -452319616, now seen corresponding path program 5 times [2024-06-28 02:48:45,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:45,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437532562] [2024-06-28 02:48:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:45,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:46,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:46,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437532562] [2024-06-28 02:48:46,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437532562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:46,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:46,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318922379] [2024-06-28 02:48:46,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:46,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:46,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:46,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:46,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 91 transitions, 799 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 02:48:46,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:46,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:46,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:46,510 INFO L124 PetriNetUnfolderBase]: 247/461 cut-off events. [2024-06-28 02:48:46,511 INFO L125 PetriNetUnfolderBase]: For 8296/8296 co-relation queries the response was YES. [2024-06-28 02:48:46,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2743 conditions, 461 events. 247/461 cut-off events. For 8296/8296 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1896 event pairs, 45 based on Foata normal form. 1/461 useless extension candidates. Maximal degree in co-relation 2696. Up to 345 conditions per place. [2024-06-28 02:48:46,514 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 63 selfloop transitions, 36 changer transitions 0/102 dead transitions. [2024-06-28 02:48:46,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 1065 flow [2024-06-28 02:48:46,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-28 02:48:46,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-28 02:48:46,515 INFO L175 Difference]: Start difference. First operand has 100 places, 91 transitions, 799 flow. Second operand 8 states and 103 transitions. [2024-06-28 02:48:46,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 1065 flow [2024-06-28 02:48:46,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 102 transitions, 969 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:46,523 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 812 flow [2024-06-28 02:48:46,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=812, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2024-06-28 02:48:46,523 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-28 02:48:46,524 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 812 flow [2024-06-28 02:48:46,524 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 02:48:46,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:46,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:46,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:48:46,524 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:46,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:46,525 INFO L85 PathProgramCache]: Analyzing trace with hash -444045406, now seen corresponding path program 6 times [2024-06-28 02:48:46,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:46,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879379193] [2024-06-28 02:48:46,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:46,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:47,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:47,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879379193] [2024-06-28 02:48:47,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879379193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:47,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:47,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:47,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462162812] [2024-06-28 02:48:47,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:47,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:47,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:47,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:47,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:47,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:47,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 812 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 02:48:47,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:47,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:47,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:47,568 INFO L124 PetriNetUnfolderBase]: 245/458 cut-off events. [2024-06-28 02:48:47,569 INFO L125 PetriNetUnfolderBase]: For 8697/8697 co-relation queries the response was YES. [2024-06-28 02:48:47,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 458 events. 245/458 cut-off events. For 8697/8697 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1896 event pairs, 45 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 2688. Up to 301 conditions per place. [2024-06-28 02:48:47,572 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 49 changer transitions 0/103 dead transitions. [2024-06-28 02:48:47,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 1074 flow [2024-06-28 02:48:47,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:47,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 02:48:47,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 02:48:47,573 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 812 flow. Second operand 8 states and 102 transitions. [2024-06-28 02:48:47,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 1074 flow [2024-06-28 02:48:47,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 103 transitions, 981 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:47,582 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 858 flow [2024-06-28 02:48:47,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=858, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2024-06-28 02:48:47,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-28 02:48:47,583 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 858 flow [2024-06-28 02:48:47,583 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 02:48:47,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:47,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:47,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:48:47,583 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:47,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:47,584 INFO L85 PathProgramCache]: Analyzing trace with hash -444045158, now seen corresponding path program 2 times [2024-06-28 02:48:47,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:47,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167735479] [2024-06-28 02:48:47,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:47,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:48,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:48,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167735479] [2024-06-28 02:48:48,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167735479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:48,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:48,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:48,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655778575] [2024-06-28 02:48:48,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:48,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:48,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:48,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:48,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:48,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:48,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 858 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 02:48:48,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:48,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:48,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:48,641 INFO L124 PetriNetUnfolderBase]: 261/484 cut-off events. [2024-06-28 02:48:48,641 INFO L125 PetriNetUnfolderBase]: For 10617/10617 co-relation queries the response was YES. [2024-06-28 02:48:48,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 484 events. 261/484 cut-off events. For 10617/10617 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2027 event pairs, 40 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2945. Up to 381 conditions per place. [2024-06-28 02:48:48,645 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 80 selfloop transitions, 30 changer transitions 0/113 dead transitions. [2024-06-28 02:48:48,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 113 transitions, 1272 flow [2024-06-28 02:48:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-28 02:48:48,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:48:48,646 INFO L175 Difference]: Start difference. First operand has 104 places, 95 transitions, 858 flow. Second operand 8 states and 104 transitions. [2024-06-28 02:48:48,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 113 transitions, 1272 flow [2024-06-28 02:48:48,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 113 transitions, 1149 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:48,655 INFO L231 Difference]: Finished difference. Result has 106 places, 101 transitions, 864 flow [2024-06-28 02:48:48,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=864, PETRI_PLACES=106, PETRI_TRANSITIONS=101} [2024-06-28 02:48:48,655 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-28 02:48:48,655 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 101 transitions, 864 flow [2024-06-28 02:48:48,655 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 02:48:48,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:48,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:48,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:48:48,656 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:48,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:48,656 INFO L85 PathProgramCache]: Analyzing trace with hash -452319368, now seen corresponding path program 3 times [2024-06-28 02:48:48,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:48,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425564265] [2024-06-28 02:48:48,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:48,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:49,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:49,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425564265] [2024-06-28 02:48:49,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425564265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:49,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:49,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:49,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095028112] [2024-06-28 02:48:49,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:49,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:49,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:49,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:49,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:49,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:49,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 101 transitions, 864 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 02:48:49,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:49,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:49,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:49,732 INFO L124 PetriNetUnfolderBase]: 259/481 cut-off events. [2024-06-28 02:48:49,733 INFO L125 PetriNetUnfolderBase]: For 10588/10588 co-relation queries the response was YES. [2024-06-28 02:48:49,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2936 conditions, 481 events. 259/481 cut-off events. For 10588/10588 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2025 event pairs, 43 based on Foata normal form. 1/481 useless extension candidates. Maximal degree in co-relation 2886. Up to 423 conditions per place. [2024-06-28 02:48:49,736 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 87 selfloop transitions, 20 changer transitions 0/110 dead transitions. [2024-06-28 02:48:49,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 110 transitions, 1118 flow [2024-06-28 02:48:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:49,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 02:48:49,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:48:49,737 INFO L175 Difference]: Start difference. First operand has 106 places, 101 transitions, 864 flow. Second operand 8 states and 96 transitions. [2024-06-28 02:48:49,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 110 transitions, 1118 flow [2024-06-28 02:48:49,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 110 transitions, 1085 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:49,747 INFO L231 Difference]: Finished difference. Result has 111 places, 103 transitions, 904 flow [2024-06-28 02:48:49,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=904, PETRI_PLACES=111, PETRI_TRANSITIONS=103} [2024-06-28 02:48:49,748 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-28 02:48:49,748 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 103 transitions, 904 flow [2024-06-28 02:48:49,748 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 02:48:49,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:49,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:49,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:48:49,749 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:49,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:49,749 INFO L85 PathProgramCache]: Analyzing trace with hash 639640146, now seen corresponding path program 4 times [2024-06-28 02:48:49,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:49,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810179976] [2024-06-28 02:48:49,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:49,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:50,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:50,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810179976] [2024-06-28 02:48:50,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810179976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:50,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:50,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:50,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357694158] [2024-06-28 02:48:50,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:50,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:50,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:50,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:50,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:50,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:50,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 103 transitions, 904 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 02:48:50,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:50,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:50,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:50,867 INFO L124 PetriNetUnfolderBase]: 257/478 cut-off events. [2024-06-28 02:48:50,867 INFO L125 PetriNetUnfolderBase]: For 10785/10785 co-relation queries the response was YES. [2024-06-28 02:48:50,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 478 events. 257/478 cut-off events. For 10785/10785 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2006 event pairs, 46 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 2901. Up to 437 conditions per place. [2024-06-28 02:48:50,870 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 96 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2024-06-28 02:48:50,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 112 transitions, 1164 flow [2024-06-28 02:48:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:50,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:50,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 02:48:50,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 02:48:50,873 INFO L175 Difference]: Start difference. First operand has 111 places, 103 transitions, 904 flow. Second operand 8 states and 94 transitions. [2024-06-28 02:48:50,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 112 transitions, 1164 flow [2024-06-28 02:48:50,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 1109 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:50,884 INFO L231 Difference]: Finished difference. Result has 113 places, 105 transitions, 910 flow [2024-06-28 02:48:50,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=910, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2024-06-28 02:48:50,885 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-28 02:48:50,885 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 910 flow [2024-06-28 02:48:50,885 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 02:48:50,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:50,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:50,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:48:50,886 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:50,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:50,886 INFO L85 PathProgramCache]: Analyzing trace with hash -443737576, now seen corresponding path program 1 times [2024-06-28 02:48:50,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:50,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503101434] [2024-06-28 02:48:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:50,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:51,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:51,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503101434] [2024-06-28 02:48:51,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503101434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:51,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:51,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:48:51,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134907143] [2024-06-28 02:48:51,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:51,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:48:52,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:52,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:48:52,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:48:52,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 02:48:52,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 910 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 02:48:52,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:52,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 02:48:52,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:52,282 INFO L124 PetriNetUnfolderBase]: 240/455 cut-off events. [2024-06-28 02:48:52,282 INFO L125 PetriNetUnfolderBase]: For 11073/11078 co-relation queries the response was YES. [2024-06-28 02:48:52,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2784 conditions, 455 events. 240/455 cut-off events. For 11073/11078 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1924 event pairs, 42 based on Foata normal form. 7/458 useless extension candidates. Maximal degree in co-relation 2731. Up to 373 conditions per place. [2024-06-28 02:48:52,285 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 81 selfloop transitions, 14 changer transitions 0/114 dead transitions. [2024-06-28 02:48:52,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 114 transitions, 1120 flow [2024-06-28 02:48:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:48:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:48:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 02:48:52,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 02:48:52,286 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 910 flow. Second operand 9 states and 111 transitions. [2024-06-28 02:48:52,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 114 transitions, 1120 flow [2024-06-28 02:48:52,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 1077 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:52,297 INFO L231 Difference]: Finished difference. Result has 116 places, 105 transitions, 899 flow [2024-06-28 02:48:52,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=899, PETRI_PLACES=116, PETRI_TRANSITIONS=105} [2024-06-28 02:48:52,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-28 02:48:52,298 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 105 transitions, 899 flow [2024-06-28 02:48:52,298 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 02:48:52,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:52,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:52,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:48:52,298 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:52,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:52,299 INFO L85 PathProgramCache]: Analyzing trace with hash -89969081, now seen corresponding path program 1 times [2024-06-28 02:48:52,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:52,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583728574] [2024-06-28 02:48:52,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:52,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:53,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:53,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583728574] [2024-06-28 02:48:53,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583728574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:53,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:53,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:48:53,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167282316] [2024-06-28 02:48:53,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:53,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:48:53,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:48:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:48:53,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:53,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 105 transitions, 899 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 02:48:53,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:53,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:53,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:53,575 INFO L124 PetriNetUnfolderBase]: 257/480 cut-off events. [2024-06-28 02:48:53,575 INFO L125 PetriNetUnfolderBase]: For 11386/11386 co-relation queries the response was YES. [2024-06-28 02:48:53,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2961 conditions, 480 events. 257/480 cut-off events. For 11386/11386 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2019 event pairs, 36 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2907. Up to 387 conditions per place. [2024-06-28 02:48:53,579 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 89 selfloop transitions, 28 changer transitions 0/120 dead transitions. [2024-06-28 02:48:53,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 1217 flow [2024-06-28 02:48:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:48:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:48:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 02:48:53,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 02:48:53,581 INFO L175 Difference]: Start difference. First operand has 116 places, 105 transitions, 899 flow. Second operand 9 states and 112 transitions. [2024-06-28 02:48:53,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 1217 flow [2024-06-28 02:48:53,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 1183 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:53,594 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 968 flow [2024-06-28 02:48:53,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2024-06-28 02:48:53,594 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-28 02:48:53,594 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 968 flow [2024-06-28 02:48:53,595 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 02:48:53,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:53,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:53,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:48:53,595 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:53,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:53,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1641914672, now seen corresponding path program 1 times [2024-06-28 02:48:53,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:53,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130075529] [2024-06-28 02:48:53,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:53,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:54,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:54,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130075529] [2024-06-28 02:48:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130075529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:54,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:48:54,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482436513] [2024-06-28 02:48:54,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:54,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:48:54,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:54,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:48:54,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:48:54,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:54,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 968 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 02:48:54,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:54,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:54,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:54,631 INFO L124 PetriNetUnfolderBase]: 269/500 cut-off events. [2024-06-28 02:48:54,631 INFO L125 PetriNetUnfolderBase]: For 13587/13587 co-relation queries the response was YES. [2024-06-28 02:48:54,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3168 conditions, 500 events. 269/500 cut-off events. For 13587/13587 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2113 event pairs, 35 based on Foata normal form. 4/503 useless extension candidates. Maximal degree in co-relation 3113. Up to 398 conditions per place. [2024-06-28 02:48:54,634 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 29 changer transitions 0/124 dead transitions. [2024-06-28 02:48:54,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 124 transitions, 1308 flow [2024-06-28 02:48:54,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:48:54,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:48:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 02:48:54,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 02:48:54,635 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 968 flow. Second operand 9 states and 114 transitions. [2024-06-28 02:48:54,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 124 transitions, 1308 flow [2024-06-28 02:48:54,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 124 transitions, 1212 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:54,648 INFO L231 Difference]: Finished difference. Result has 120 places, 110 transitions, 984 flow [2024-06-28 02:48:54,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=984, PETRI_PLACES=120, PETRI_TRANSITIONS=110} [2024-06-28 02:48:54,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-28 02:48:54,649 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 110 transitions, 984 flow [2024-06-28 02:48:54,649 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 02:48:54,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:54,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:54,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:48:54,649 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:54,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:54,649 INFO L85 PathProgramCache]: Analyzing trace with hash -84397234, now seen corresponding path program 2 times [2024-06-28 02:48:54,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:54,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727542424] [2024-06-28 02:48:54,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:54,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:55,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727542424] [2024-06-28 02:48:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727542424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:55,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:55,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:48:55,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034573344] [2024-06-28 02:48:55,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:55,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:48:55,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:55,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:48:55,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:48:55,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:55,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 110 transitions, 984 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 02:48:55,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:55,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:55,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:55,826 INFO L124 PetriNetUnfolderBase]: 301/552 cut-off events. [2024-06-28 02:48:55,827 INFO L125 PetriNetUnfolderBase]: For 16326/16326 co-relation queries the response was YES. [2024-06-28 02:48:55,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3715 conditions, 552 events. 301/552 cut-off events. For 16326/16326 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2361 event pairs, 37 based on Foata normal form. 2/553 useless extension candidates. Maximal degree in co-relation 3659. Up to 378 conditions per place. [2024-06-28 02:48:55,830 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 46 changer transitions 0/131 dead transitions. [2024-06-28 02:48:55,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 131 transitions, 1464 flow [2024-06-28 02:48:55,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:48:55,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:48:55,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 02:48:55,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:48:55,831 INFO L175 Difference]: Start difference. First operand has 120 places, 110 transitions, 984 flow. Second operand 9 states and 117 transitions. [2024-06-28 02:48:55,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 131 transitions, 1464 flow [2024-06-28 02:48:55,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 131 transitions, 1374 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:55,846 INFO L231 Difference]: Finished difference. Result has 123 places, 117 transitions, 1117 flow [2024-06-28 02:48:55,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1117, PETRI_PLACES=123, PETRI_TRANSITIONS=117} [2024-06-28 02:48:55,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-28 02:48:55,846 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 117 transitions, 1117 flow [2024-06-28 02:48:55,846 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 02:48:55,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:55,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:55,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:48:55,847 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:55,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:55,847 INFO L85 PathProgramCache]: Analyzing trace with hash -84396955, now seen corresponding path program 1 times [2024-06-28 02:48:55,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:55,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552140298] [2024-06-28 02:48:55,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:55,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:56,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:56,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552140298] [2024-06-28 02:48:56,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552140298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:56,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:56,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:48:56,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367411018] [2024-06-28 02:48:56,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:56,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:48:56,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:48:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:48:56,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:56,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 117 transitions, 1117 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 02:48:56,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:56,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:56,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:57,158 INFO L124 PetriNetUnfolderBase]: 298/547 cut-off events. [2024-06-28 02:48:57,158 INFO L125 PetriNetUnfolderBase]: For 16765/16765 co-relation queries the response was YES. [2024-06-28 02:48:57,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3791 conditions, 547 events. 298/547 cut-off events. For 16765/16765 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2337 event pairs, 38 based on Foata normal form. 1/547 useless extension candidates. Maximal degree in co-relation 3733. Up to 488 conditions per place. [2024-06-28 02:48:57,161 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 104 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-06-28 02:48:57,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 127 transitions, 1389 flow [2024-06-28 02:48:57,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:48:57,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:48:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 02:48:57,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 02:48:57,162 INFO L175 Difference]: Start difference. First operand has 123 places, 117 transitions, 1117 flow. Second operand 9 states and 107 transitions. [2024-06-28 02:48:57,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 127 transitions, 1389 flow [2024-06-28 02:48:57,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 127 transitions, 1313 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:48:57,180 INFO L231 Difference]: Finished difference. Result has 127 places, 117 transitions, 1086 flow [2024-06-28 02:48:57,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1086, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2024-06-28 02:48:57,180 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-28 02:48:57,180 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 1086 flow [2024-06-28 02:48:57,180 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 02:48:57,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:57,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:57,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:48:57,181 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:57,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:57,181 INFO L85 PathProgramCache]: Analyzing trace with hash -401842331, now seen corresponding path program 2 times [2024-06-28 02:48:57,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:57,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143434014] [2024-06-28 02:48:57,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:57,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:58,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:58,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143434014] [2024-06-28 02:48:58,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143434014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:58,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:58,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:48:58,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574394933] [2024-06-28 02:48:58,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:58,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:48:58,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:48:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:48:58,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:58,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 1086 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 02:48:58,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:58,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:58,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:58,642 INFO L124 PetriNetUnfolderBase]: 301/554 cut-off events. [2024-06-28 02:48:58,642 INFO L125 PetriNetUnfolderBase]: For 17476/17476 co-relation queries the response was YES. [2024-06-28 02:48:58,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 554 events. 301/554 cut-off events. For 17476/17476 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2393 event pairs, 38 based on Foata normal form. 1/554 useless extension candidates. Maximal degree in co-relation 3770. Up to 445 conditions per place. [2024-06-28 02:48:58,645 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 33 changer transitions 0/131 dead transitions. [2024-06-28 02:48:58,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 131 transitions, 1456 flow [2024-06-28 02:48:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:48:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:48:58,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 02:48:58,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 02:48:58,646 INFO L175 Difference]: Start difference. First operand has 127 places, 117 transitions, 1086 flow. Second operand 9 states and 112 transitions. [2024-06-28 02:48:58,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 131 transitions, 1456 flow [2024-06-28 02:48:58,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 131 transitions, 1401 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:58,663 INFO L231 Difference]: Finished difference. Result has 129 places, 119 transitions, 1152 flow [2024-06-28 02:48:58,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1152, PETRI_PLACES=129, PETRI_TRANSITIONS=119} [2024-06-28 02:48:58,663 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-28 02:48:58,663 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 119 transitions, 1152 flow [2024-06-28 02:48:58,663 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 02:48:58,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:58,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:58,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:48:58,663 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:58,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:58,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1786006795, now seen corresponding path program 3 times [2024-06-28 02:48:58,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:58,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432528355] [2024-06-28 02:48:58,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:58,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:59,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:59,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432528355] [2024-06-28 02:48:59,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432528355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:59,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:59,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:48:59,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670596162] [2024-06-28 02:48:59,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:59,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:48:59,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:59,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:48:59,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:48:59,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:48:59,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 119 transitions, 1152 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 02:48:59,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:59,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:48:59,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:59,822 INFO L124 PetriNetUnfolderBase]: 304/561 cut-off events. [2024-06-28 02:48:59,822 INFO L125 PetriNetUnfolderBase]: For 18892/18892 co-relation queries the response was YES. [2024-06-28 02:48:59,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3969 conditions, 561 events. 304/561 cut-off events. For 18892/18892 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2453 event pairs, 38 based on Foata normal form. 1/561 useless extension candidates. Maximal degree in co-relation 3908. Up to 422 conditions per place. [2024-06-28 02:48:59,825 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 89 selfloop transitions, 40 changer transitions 0/132 dead transitions. [2024-06-28 02:48:59,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 132 transitions, 1506 flow [2024-06-28 02:48:59,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:48:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:48:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 02:48:59,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 02:48:59,826 INFO L175 Difference]: Start difference. First operand has 129 places, 119 transitions, 1152 flow. Second operand 9 states and 112 transitions. [2024-06-28 02:48:59,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 132 transitions, 1506 flow [2024-06-28 02:48:59,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 132 transitions, 1401 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:59,842 INFO L231 Difference]: Finished difference. Result has 131 places, 121 transitions, 1186 flow [2024-06-28 02:48:59,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1186, PETRI_PLACES=131, PETRI_TRANSITIONS=121} [2024-06-28 02:48:59,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-28 02:48:59,842 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 121 transitions, 1186 flow [2024-06-28 02:48:59,842 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 02:48:59,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:59,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:59,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:48:59,843 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:59,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:59,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1785805202, now seen corresponding path program 3 times [2024-06-28 02:48:59,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:59,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042349906] [2024-06-28 02:48:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:59,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:00,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:00,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042349906] [2024-06-28 02:49:00,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042349906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:00,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:00,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:00,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373094245] [2024-06-28 02:49:00,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:00,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:00,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:00,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:00,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:00,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:00,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 121 transitions, 1186 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 02:49:00,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:00,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:00,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:00,967 INFO L124 PetriNetUnfolderBase]: 306/565 cut-off events. [2024-06-28 02:49:00,967 INFO L125 PetriNetUnfolderBase]: For 20433/20433 co-relation queries the response was YES. [2024-06-28 02:49:00,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 565 events. 306/565 cut-off events. For 20433/20433 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2474 event pairs, 37 based on Foata normal form. 4/568 useless extension candidates. Maximal degree in co-relation 3904. Up to 445 conditions per place. [2024-06-28 02:49:00,971 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 99 selfloop transitions, 34 changer transitions 0/136 dead transitions. [2024-06-28 02:49:00,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 136 transitions, 1560 flow [2024-06-28 02:49:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 02:49:00,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 02:49:00,972 INFO L175 Difference]: Start difference. First operand has 131 places, 121 transitions, 1186 flow. Second operand 9 states and 114 transitions. [2024-06-28 02:49:00,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 136 transitions, 1560 flow [2024-06-28 02:49:00,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 136 transitions, 1437 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:00,990 INFO L231 Difference]: Finished difference. Result has 133 places, 123 transitions, 1171 flow [2024-06-28 02:49:00,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1171, PETRI_PLACES=133, PETRI_TRANSITIONS=123} [2024-06-28 02:49:00,991 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-28 02:49:00,991 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 123 transitions, 1171 flow [2024-06-28 02:49:00,991 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 02:49:00,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:00,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:00,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:49:00,991 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:00,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:00,992 INFO L85 PathProgramCache]: Analyzing trace with hash -84404674, now seen corresponding path program 4 times [2024-06-28 02:49:00,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:00,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790373693] [2024-06-28 02:49:00,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:00,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:01,814 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 02:49:01,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:01,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790373693] [2024-06-28 02:49:01,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790373693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:01,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:01,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:01,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353388791] [2024-06-28 02:49:01,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:01,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:01,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:01,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:01,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:01,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:01,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 123 transitions, 1171 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 02:49:01,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:01,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:01,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:02,117 INFO L124 PetriNetUnfolderBase]: 302/559 cut-off events. [2024-06-28 02:49:02,117 INFO L125 PetriNetUnfolderBase]: For 18889/18889 co-relation queries the response was YES. [2024-06-28 02:49:02,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3851 conditions, 559 events. 302/559 cut-off events. For 18889/18889 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2443 event pairs, 36 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3788. Up to 385 conditions per place. [2024-06-28 02:49:02,121 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 88 selfloop transitions, 46 changer transitions 0/137 dead transitions. [2024-06-28 02:49:02,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 137 transitions, 1515 flow [2024-06-28 02:49:02,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:02,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 02:49:02,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:49:02,129 INFO L175 Difference]: Start difference. First operand has 133 places, 123 transitions, 1171 flow. Second operand 9 states and 117 transitions. [2024-06-28 02:49:02,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 137 transitions, 1515 flow [2024-06-28 02:49:02,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 137 transitions, 1399 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:02,153 INFO L231 Difference]: Finished difference. Result has 135 places, 123 transitions, 1152 flow [2024-06-28 02:49:02,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1152, PETRI_PLACES=135, PETRI_TRANSITIONS=123} [2024-06-28 02:49:02,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-28 02:49:02,154 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 123 transitions, 1152 flow [2024-06-28 02:49:02,154 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 02:49:02,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:02,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:02,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:49:02,155 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:02,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:02,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1483702087, now seen corresponding path program 4 times [2024-06-28 02:49:02,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:02,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958793363] [2024-06-28 02:49:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:02,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:03,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:03,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958793363] [2024-06-28 02:49:03,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958793363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:03,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:03,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:03,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312185512] [2024-06-28 02:49:03,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:03,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:03,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:03,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:03,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:03,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:03,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 123 transitions, 1152 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 02:49:03,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:03,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:03,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:03,481 INFO L124 PetriNetUnfolderBase]: 305/566 cut-off events. [2024-06-28 02:49:03,481 INFO L125 PetriNetUnfolderBase]: For 19197/19197 co-relation queries the response was YES. [2024-06-28 02:49:03,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 566 events. 305/566 cut-off events. For 19197/19197 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2506 event pairs, 42 based on Foata normal form. 1/566 useless extension candidates. Maximal degree in co-relation 3815. Up to 445 conditions per place. [2024-06-28 02:49:03,484 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 97 selfloop transitions, 35 changer transitions 0/135 dead transitions. [2024-06-28 02:49:03,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 135 transitions, 1532 flow [2024-06-28 02:49:03,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 02:49:03,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 02:49:03,493 INFO L175 Difference]: Start difference. First operand has 135 places, 123 transitions, 1152 flow. Second operand 9 states and 111 transitions. [2024-06-28 02:49:03,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 135 transitions, 1532 flow [2024-06-28 02:49:03,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 1418 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:03,515 INFO L231 Difference]: Finished difference. Result has 136 places, 125 transitions, 1171 flow [2024-06-28 02:49:03,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1171, PETRI_PLACES=136, PETRI_TRANSITIONS=125} [2024-06-28 02:49:03,515 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-28 02:49:03,515 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 125 transitions, 1171 flow [2024-06-28 02:49:03,515 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 02:49:03,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:03,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:03,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:49:03,516 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:03,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:03,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1653609230, now seen corresponding path program 5 times [2024-06-28 02:49:03,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:03,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454327247] [2024-06-28 02:49:03,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:03,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:04,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:04,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454327247] [2024-06-28 02:49:04,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454327247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:04,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:04,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:04,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494719461] [2024-06-28 02:49:04,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:04,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:04,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:04,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:04,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:04,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:04,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 125 transitions, 1171 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 02:49:04,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:04,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:04,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:04,621 INFO L124 PetriNetUnfolderBase]: 317/586 cut-off events. [2024-06-28 02:49:04,621 INFO L125 PetriNetUnfolderBase]: For 22580/22580 co-relation queries the response was YES. [2024-06-28 02:49:04,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4042 conditions, 586 events. 317/586 cut-off events. For 22580/22580 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2609 event pairs, 42 based on Foata normal form. 4/589 useless extension candidates. Maximal degree in co-relation 3977. Up to 456 conditions per place. [2024-06-28 02:49:04,626 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 100 selfloop transitions, 36 changer transitions 0/139 dead transitions. [2024-06-28 02:49:04,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 139 transitions, 1577 flow [2024-06-28 02:49:04,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 02:49:04,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-28 02:49:04,627 INFO L175 Difference]: Start difference. First operand has 136 places, 125 transitions, 1171 flow. Second operand 9 states and 113 transitions. [2024-06-28 02:49:04,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 139 transitions, 1577 flow [2024-06-28 02:49:04,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 139 transitions, 1460 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:04,652 INFO L231 Difference]: Finished difference. Result has 138 places, 128 transitions, 1200 flow [2024-06-28 02:49:04,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1200, PETRI_PLACES=138, PETRI_TRANSITIONS=128} [2024-06-28 02:49:04,653 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-28 02:49:04,653 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 128 transitions, 1200 flow [2024-06-28 02:49:04,653 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 02:49:04,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:04,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:04,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:49:04,653 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:04,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:04,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1653399980, now seen corresponding path program 6 times [2024-06-28 02:49:04,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:04,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446595552] [2024-06-28 02:49:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:04,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:05,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:05,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446595552] [2024-06-28 02:49:05,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446595552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:05,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:05,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:05,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616226403] [2024-06-28 02:49:05,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:05,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:05,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:05,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:05,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:05,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:05,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 128 transitions, 1200 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 02:49:05,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:05,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:05,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:05,878 INFO L124 PetriNetUnfolderBase]: 325/599 cut-off events. [2024-06-28 02:49:05,878 INFO L125 PetriNetUnfolderBase]: For 22649/22649 co-relation queries the response was YES. [2024-06-28 02:49:05,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4230 conditions, 599 events. 325/599 cut-off events. For 22649/22649 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2672 event pairs, 41 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 4164. Up to 459 conditions per place. [2024-06-28 02:49:05,881 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 99 selfloop transitions, 43 changer transitions 0/145 dead transitions. [2024-06-28 02:49:05,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 145 transitions, 1754 flow [2024-06-28 02:49:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:05,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 02:49:05,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-28 02:49:05,883 INFO L175 Difference]: Start difference. First operand has 138 places, 128 transitions, 1200 flow. Second operand 9 states and 116 transitions. [2024-06-28 02:49:05,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 145 transitions, 1754 flow [2024-06-28 02:49:05,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 145 transitions, 1580 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:05,909 INFO L231 Difference]: Finished difference. Result has 141 places, 134 transitions, 1262 flow [2024-06-28 02:49:05,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1262, PETRI_PLACES=141, PETRI_TRANSITIONS=134} [2024-06-28 02:49:05,909 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-28 02:49:05,910 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 134 transitions, 1262 flow [2024-06-28 02:49:05,910 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 02:49:05,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:05,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:05,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:49:05,910 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:05,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:05,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1653399701, now seen corresponding path program 2 times [2024-06-28 02:49:05,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:05,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314527876] [2024-06-28 02:49:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:05,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:07,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:07,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314527876] [2024-06-28 02:49:07,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314527876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:07,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:07,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:07,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394830386] [2024-06-28 02:49:07,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:07,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:07,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:07,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:07,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:07,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:07,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 134 transitions, 1262 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 02:49:07,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:07,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:07,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:07,345 INFO L124 PetriNetUnfolderBase]: 323/596 cut-off events. [2024-06-28 02:49:07,345 INFO L125 PetriNetUnfolderBase]: For 22826/22826 co-relation queries the response was YES. [2024-06-28 02:49:07,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 596 events. 323/596 cut-off events. For 22826/22826 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2670 event pairs, 39 based on Foata normal form. 1/596 useless extension candidates. Maximal degree in co-relation 4138. Up to 527 conditions per place. [2024-06-28 02:49:07,349 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 117 selfloop transitions, 21 changer transitions 0/141 dead transitions. [2024-06-28 02:49:07,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 141 transitions, 1554 flow [2024-06-28 02:49:07,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:07,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 02:49:07,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-28 02:49:07,358 INFO L175 Difference]: Start difference. First operand has 141 places, 134 transitions, 1262 flow. Second operand 8 states and 97 transitions. [2024-06-28 02:49:07,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 141 transitions, 1554 flow [2024-06-28 02:49:07,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 141 transitions, 1467 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:07,384 INFO L231 Difference]: Finished difference. Result has 144 places, 134 transitions, 1223 flow [2024-06-28 02:49:07,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1223, PETRI_PLACES=144, PETRI_TRANSITIONS=134} [2024-06-28 02:49:07,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-28 02:49:07,384 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 134 transitions, 1223 flow [2024-06-28 02:49:07,385 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 02:49:07,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:07,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:07,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:49:07,385 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:07,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:07,385 INFO L85 PathProgramCache]: Analyzing trace with hash -880504166, now seen corresponding path program 7 times [2024-06-28 02:49:07,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:07,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166940076] [2024-06-28 02:49:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:07,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:08,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:08,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166940076] [2024-06-28 02:49:08,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166940076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:08,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:08,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:08,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011041266] [2024-06-28 02:49:08,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:08,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:08,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:08,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:08,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:08,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 134 transitions, 1223 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 02:49:08,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:08,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:08,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:08,572 INFO L124 PetriNetUnfolderBase]: 334/614 cut-off events. [2024-06-28 02:49:08,573 INFO L125 PetriNetUnfolderBase]: For 25357/25357 co-relation queries the response was YES. [2024-06-28 02:49:08,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4417 conditions, 614 events. 334/614 cut-off events. For 25357/25357 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2760 event pairs, 42 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 4347. Up to 328 conditions per place. [2024-06-28 02:49:08,576 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 73 changer transitions 0/156 dead transitions. [2024-06-28 02:49:08,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 156 transitions, 1989 flow [2024-06-28 02:49:08,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 02:49:08,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43727598566308246 [2024-06-28 02:49:08,577 INFO L175 Difference]: Start difference. First operand has 144 places, 134 transitions, 1223 flow. Second operand 9 states and 122 transitions. [2024-06-28 02:49:08,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 156 transitions, 1989 flow [2024-06-28 02:49:08,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 156 transitions, 1923 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:08,621 INFO L231 Difference]: Finished difference. Result has 146 places, 141 transitions, 1462 flow [2024-06-28 02:49:08,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1462, PETRI_PLACES=146, PETRI_TRANSITIONS=141} [2024-06-28 02:49:08,621 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-28 02:49:08,621 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 141 transitions, 1462 flow [2024-06-28 02:49:08,621 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 02:49:08,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:08,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:08,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:49:08,622 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:08,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:08,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1483500277, now seen corresponding path program 5 times [2024-06-28 02:49:08,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:08,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318346710] [2024-06-28 02:49:08,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:08,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:09,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318346710] [2024-06-28 02:49:09,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318346710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:09,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:09,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:09,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112721910] [2024-06-28 02:49:09,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:09,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:09,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:09,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:09,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:09,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:09,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 141 transitions, 1462 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 02:49:09,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:09,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:09,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:09,946 INFO L124 PetriNetUnfolderBase]: 337/621 cut-off events. [2024-06-28 02:49:09,947 INFO L125 PetriNetUnfolderBase]: For 26491/26491 co-relation queries the response was YES. [2024-06-28 02:49:09,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4676 conditions, 621 events. 337/621 cut-off events. For 26491/26491 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2825 event pairs, 45 based on Foata normal form. 1/621 useless extension candidates. Maximal degree in co-relation 4605. Up to 489 conditions per place. [2024-06-28 02:49:09,950 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 110 selfloop transitions, 39 changer transitions 0/152 dead transitions. [2024-06-28 02:49:09,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 152 transitions, 1868 flow [2024-06-28 02:49:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 02:49:09,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-28 02:49:09,951 INFO L175 Difference]: Start difference. First operand has 146 places, 141 transitions, 1462 flow. Second operand 9 states and 113 transitions. [2024-06-28 02:49:09,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 152 transitions, 1868 flow [2024-06-28 02:49:09,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 1730 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:09,988 INFO L231 Difference]: Finished difference. Result has 151 places, 143 transitions, 1497 flow [2024-06-28 02:49:09,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1497, PETRI_PLACES=151, PETRI_TRANSITIONS=143} [2024-06-28 02:49:09,988 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-28 02:49:09,989 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 143 transitions, 1497 flow [2024-06-28 02:49:09,989 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 02:49:09,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:09,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:09,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:49:09,989 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:09,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:09,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1483500060, now seen corresponding path program 8 times [2024-06-28 02:49:09,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:09,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628860983] [2024-06-28 02:49:09,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:09,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:10,970 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 02:49:10,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:10,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628860983] [2024-06-28 02:49:10,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628860983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:10,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:10,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:10,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080517828] [2024-06-28 02:49:10,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:10,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:10,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:10,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:10,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:11,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:11,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 143 transitions, 1497 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 02:49:11,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:11,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:11,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:11,274 INFO L124 PetriNetUnfolderBase]: 335/618 cut-off events. [2024-06-28 02:49:11,274 INFO L125 PetriNetUnfolderBase]: For 25293/25293 co-relation queries the response was YES. [2024-06-28 02:49:11,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4467 conditions, 618 events. 335/618 cut-off events. For 25293/25293 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2781 event pairs, 44 based on Foata normal form. 1/618 useless extension candidates. Maximal degree in co-relation 4395. Up to 477 conditions per place. [2024-06-28 02:49:11,278 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 107 selfloop transitions, 43 changer transitions 0/153 dead transitions. [2024-06-28 02:49:11,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 153 transitions, 1832 flow [2024-06-28 02:49:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 02:49:11,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-28 02:49:11,279 INFO L175 Difference]: Start difference. First operand has 151 places, 143 transitions, 1497 flow. Second operand 9 states and 115 transitions. [2024-06-28 02:49:11,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 153 transitions, 1832 flow [2024-06-28 02:49:11,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 1673 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:11,312 INFO L231 Difference]: Finished difference. Result has 153 places, 144 transitions, 1442 flow [2024-06-28 02:49:11,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1442, PETRI_PLACES=153, PETRI_TRANSITIONS=144} [2024-06-28 02:49:11,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-28 02:49:11,313 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 144 transitions, 1442 flow [2024-06-28 02:49:11,313 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 02:49:11,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:11,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:11,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:49:11,313 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:11,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1226999767, now seen corresponding path program 6 times [2024-06-28 02:49:11,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:11,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438616064] [2024-06-28 02:49:11,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:11,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:12,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438616064] [2024-06-28 02:49:12,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438616064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:12,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:12,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:12,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92035874] [2024-06-28 02:49:12,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:12,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:12,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:12,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:12,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:12,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:12,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 144 transitions, 1442 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 02:49:12,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:12,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:12,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:12,727 INFO L124 PetriNetUnfolderBase]: 333/615 cut-off events. [2024-06-28 02:49:12,727 INFO L125 PetriNetUnfolderBase]: For 25010/25010 co-relation queries the response was YES. [2024-06-28 02:49:12,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4338 conditions, 615 events. 333/615 cut-off events. For 25010/25010 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2785 event pairs, 44 based on Foata normal form. 1/615 useless extension candidates. Maximal degree in co-relation 4265. Up to 430 conditions per place. [2024-06-28 02:49:12,730 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 56 changer transitions 0/154 dead transitions. [2024-06-28 02:49:12,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 154 transitions, 1826 flow [2024-06-28 02:49:12,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 02:49:12,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 02:49:12,731 INFO L175 Difference]: Start difference. First operand has 153 places, 144 transitions, 1442 flow. Second operand 9 states and 112 transitions. [2024-06-28 02:49:12,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 154 transitions, 1826 flow [2024-06-28 02:49:12,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 154 transitions, 1749 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:12,766 INFO L231 Difference]: Finished difference. Result has 156 places, 146 transitions, 1550 flow [2024-06-28 02:49:12,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1550, PETRI_PLACES=156, PETRI_TRANSITIONS=146} [2024-06-28 02:49:12,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-28 02:49:12,766 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 146 transitions, 1550 flow [2024-06-28 02:49:12,766 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 02:49:12,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:12,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:12,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:49:12,767 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:12,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:12,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1226992110, now seen corresponding path program 9 times [2024-06-28 02:49:12,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:12,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549670488] [2024-06-28 02:49:12,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:12,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:13,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:13,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549670488] [2024-06-28 02:49:13,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549670488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:13,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:13,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:13,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749990132] [2024-06-28 02:49:13,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:13,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:13,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:13,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:13,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:13,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:13,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 146 transitions, 1550 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 02:49:13,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:13,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:13,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:13,938 INFO L124 PetriNetUnfolderBase]: 339/625 cut-off events. [2024-06-28 02:49:13,939 INFO L125 PetriNetUnfolderBase]: For 27346/27346 co-relation queries the response was YES. [2024-06-28 02:49:13,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4501 conditions, 625 events. 339/625 cut-off events. For 27346/27346 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2831 event pairs, 42 based on Foata normal form. 2/626 useless extension candidates. Maximal degree in co-relation 4427. Up to 335 conditions per place. [2024-06-28 02:49:13,942 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 73 changer transitions 0/162 dead transitions. [2024-06-28 02:49:13,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 162 transitions, 2148 flow [2024-06-28 02:49:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:13,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 02:49:13,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43727598566308246 [2024-06-28 02:49:13,943 INFO L175 Difference]: Start difference. First operand has 156 places, 146 transitions, 1550 flow. Second operand 9 states and 122 transitions. [2024-06-28 02:49:13,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 162 transitions, 2148 flow [2024-06-28 02:49:13,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 162 transitions, 1979 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:13,982 INFO L231 Difference]: Finished difference. Result has 158 places, 148 transitions, 1566 flow [2024-06-28 02:49:13,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1566, PETRI_PLACES=158, PETRI_TRANSITIONS=148} [2024-06-28 02:49:13,982 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-28 02:49:13,983 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 148 transitions, 1566 flow [2024-06-28 02:49:13,983 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 02:49:13,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:13,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:13,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:49:13,983 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:13,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:13,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1476083310, now seen corresponding path program 10 times [2024-06-28 02:49:13,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:13,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546073266] [2024-06-28 02:49:13,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:13,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:14,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:14,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546073266] [2024-06-28 02:49:14,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546073266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:14,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:14,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:14,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424174468] [2024-06-28 02:49:14,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:14,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:14,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:14,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:14,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:14,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:14,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 148 transitions, 1566 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 02:49:14,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:14,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:14,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:15,147 INFO L124 PetriNetUnfolderBase]: 337/622 cut-off events. [2024-06-28 02:49:15,147 INFO L125 PetriNetUnfolderBase]: For 26184/26184 co-relation queries the response was YES. [2024-06-28 02:49:15,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 622 events. 337/622 cut-off events. For 26184/26184 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2828 event pairs, 45 based on Foata normal form. 1/622 useless extension candidates. Maximal degree in co-relation 4391. Up to 568 conditions per place. [2024-06-28 02:49:15,151 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 140 selfloop transitions, 15 changer transitions 0/158 dead transitions. [2024-06-28 02:49:15,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 158 transitions, 1932 flow [2024-06-28 02:49:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 02:49:15,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-28 02:49:15,152 INFO L175 Difference]: Start difference. First operand has 158 places, 148 transitions, 1566 flow. Second operand 9 states and 104 transitions. [2024-06-28 02:49:15,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 158 transitions, 1932 flow [2024-06-28 02:49:15,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 158 transitions, 1771 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:15,193 INFO L231 Difference]: Finished difference. Result has 161 places, 150 transitions, 1482 flow [2024-06-28 02:49:15,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1482, PETRI_PLACES=161, PETRI_TRANSITIONS=150} [2024-06-28 02:49:15,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-28 02:49:15,193 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 150 transitions, 1482 flow [2024-06-28 02:49:15,193 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 02:49:15,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:15,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:15,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:49:15,194 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:15,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:15,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1217468631, now seen corresponding path program 3 times [2024-06-28 02:49:15,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:15,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518881684] [2024-06-28 02:49:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:15,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:16,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:16,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518881684] [2024-06-28 02:49:16,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518881684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:16,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:16,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:16,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466928798] [2024-06-28 02:49:16,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:16,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:16,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:16,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:16,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:16,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:16,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 150 transitions, 1482 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 02:49:16,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:16,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:16,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:16,711 INFO L124 PetriNetUnfolderBase]: 340/627 cut-off events. [2024-06-28 02:49:16,711 INFO L125 PetriNetUnfolderBase]: For 26652/26652 co-relation queries the response was YES. [2024-06-28 02:49:16,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4363 conditions, 627 events. 340/627 cut-off events. For 26652/26652 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2853 event pairs, 44 based on Foata normal form. 1/627 useless extension candidates. Maximal degree in co-relation 4287. Up to 566 conditions per place. [2024-06-28 02:49:16,715 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 140 selfloop transitions, 19 changer transitions 0/162 dead transitions. [2024-06-28 02:49:16,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 162 transitions, 1943 flow [2024-06-28 02:49:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 02:49:16,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 02:49:16,716 INFO L175 Difference]: Start difference. First operand has 161 places, 150 transitions, 1482 flow. Second operand 10 states and 116 transitions. [2024-06-28 02:49:16,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 162 transitions, 1943 flow [2024-06-28 02:49:16,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 162 transitions, 1886 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:16,761 INFO L231 Difference]: Finished difference. Result has 164 places, 152 transitions, 1497 flow [2024-06-28 02:49:16,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1497, PETRI_PLACES=164, PETRI_TRANSITIONS=152} [2024-06-28 02:49:16,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-28 02:49:16,762 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 152 transitions, 1497 flow [2024-06-28 02:49:16,762 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 02:49:16,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:16,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:16,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:49:16,762 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:16,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:16,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1217795061, now seen corresponding path program 4 times [2024-06-28 02:49:16,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:16,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638105308] [2024-06-28 02:49:16,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:16,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:18,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:18,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:18,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638105308] [2024-06-28 02:49:18,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638105308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:18,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:18,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:18,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411141240] [2024-06-28 02:49:18,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:18,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:18,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:18,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:18,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:18,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:18,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 152 transitions, 1497 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 02:49:18,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:18,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:18,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:18,523 INFO L124 PetriNetUnfolderBase]: 338/624 cut-off events. [2024-06-28 02:49:18,523 INFO L125 PetriNetUnfolderBase]: For 26449/26449 co-relation queries the response was YES. [2024-06-28 02:49:18,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4305 conditions, 624 events. 338/624 cut-off events. For 26449/26449 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2834 event pairs, 44 based on Foata normal form. 1/624 useless extension candidates. Maximal degree in co-relation 4228. Up to 570 conditions per place. [2024-06-28 02:49:18,527 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 142 selfloop transitions, 15 changer transitions 0/160 dead transitions. [2024-06-28 02:49:18,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 160 transitions, 1829 flow [2024-06-28 02:49:18,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 02:49:18,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-28 02:49:18,528 INFO L175 Difference]: Start difference. First operand has 164 places, 152 transitions, 1497 flow. Second operand 9 states and 104 transitions. [2024-06-28 02:49:18,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 160 transitions, 1829 flow [2024-06-28 02:49:18,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 160 transitions, 1764 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:18,574 INFO L231 Difference]: Finished difference. Result has 166 places, 152 transitions, 1467 flow [2024-06-28 02:49:18,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1467, PETRI_PLACES=166, PETRI_TRANSITIONS=152} [2024-06-28 02:49:18,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-28 02:49:18,575 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 152 transitions, 1467 flow [2024-06-28 02:49:18,575 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 02:49:18,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:18,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:18,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:49:18,575 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:18,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:18,576 INFO L85 PathProgramCache]: Analyzing trace with hash -758583985, now seen corresponding path program 1 times [2024-06-28 02:49:18,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:18,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314919631] [2024-06-28 02:49:18,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:18,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:19,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:19,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314919631] [2024-06-28 02:49:19,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314919631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:19,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:19,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:19,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577222813] [2024-06-28 02:49:19,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:19,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:19,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:19,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:19,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:19,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:19,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 152 transitions, 1467 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 02:49:19,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:19,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:19,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:19,626 INFO L124 PetriNetUnfolderBase]: 342/632 cut-off events. [2024-06-28 02:49:19,626 INFO L125 PetriNetUnfolderBase]: For 28932/28932 co-relation queries the response was YES. [2024-06-28 02:49:19,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4338 conditions, 632 events. 342/632 cut-off events. For 28932/28932 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2881 event pairs, 17 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 4260. Up to 525 conditions per place. [2024-06-28 02:49:19,631 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 146 selfloop transitions, 21 changer transitions 0/170 dead transitions. [2024-06-28 02:49:19,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 1863 flow [2024-06-28 02:49:19,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 02:49:19,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 02:49:19,632 INFO L175 Difference]: Start difference. First operand has 166 places, 152 transitions, 1467 flow. Second operand 9 states and 112 transitions. [2024-06-28 02:49:19,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 1863 flow [2024-06-28 02:49:19,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 170 transitions, 1820 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 02:49:19,675 INFO L231 Difference]: Finished difference. Result has 166 places, 153 transitions, 1488 flow [2024-06-28 02:49:19,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1488, PETRI_PLACES=166, PETRI_TRANSITIONS=153} [2024-06-28 02:49:19,675 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-28 02:49:19,675 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 153 transitions, 1488 flow [2024-06-28 02:49:19,675 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 02:49:19,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:19,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:19,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:49:19,676 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:19,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:19,676 INFO L85 PathProgramCache]: Analyzing trace with hash -758523535, now seen corresponding path program 2 times [2024-06-28 02:49:19,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:19,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066354396] [2024-06-28 02:49:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:19,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:20,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:20,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066354396] [2024-06-28 02:49:20,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066354396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:20,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:20,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:20,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875465672] [2024-06-28 02:49:20,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:20,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:20,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:20,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:20,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:20,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:20,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 153 transitions, 1488 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 02:49:20,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:20,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:20,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:20,791 INFO L124 PetriNetUnfolderBase]: 346/640 cut-off events. [2024-06-28 02:49:20,791 INFO L125 PetriNetUnfolderBase]: For 30210/30210 co-relation queries the response was YES. [2024-06-28 02:49:20,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4435 conditions, 640 events. 346/640 cut-off events. For 30210/30210 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 2945 event pairs, 34 based on Foata normal form. 2/641 useless extension candidates. Maximal degree in co-relation 4356. Up to 550 conditions per place. [2024-06-28 02:49:20,796 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 145 selfloop transitions, 22 changer transitions 0/170 dead transitions. [2024-06-28 02:49:20,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 1884 flow [2024-06-28 02:49:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 02:49:20,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-28 02:49:20,796 INFO L175 Difference]: Start difference. First operand has 166 places, 153 transitions, 1488 flow. Second operand 9 states and 113 transitions. [2024-06-28 02:49:20,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 1884 flow [2024-06-28 02:49:20,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 170 transitions, 1830 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:20,848 INFO L231 Difference]: Finished difference. Result has 168 places, 154 transitions, 1502 flow [2024-06-28 02:49:20,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1502, PETRI_PLACES=168, PETRI_TRANSITIONS=154} [2024-06-28 02:49:20,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-28 02:49:20,848 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 154 transitions, 1502 flow [2024-06-28 02:49:20,849 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 02:49:20,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:20,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:20,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:49:20,849 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:20,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:20,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1506344023, now seen corresponding path program 3 times [2024-06-28 02:49:20,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:20,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996269478] [2024-06-28 02:49:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:20,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:21,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:21,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996269478] [2024-06-28 02:49:21,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996269478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:21,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:21,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:21,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785099545] [2024-06-28 02:49:21,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:21,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:21,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:21,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:21,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:21,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:21,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 154 transitions, 1502 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 02:49:21,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:21,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:21,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:21,922 INFO L124 PetriNetUnfolderBase]: 350/648 cut-off events. [2024-06-28 02:49:21,922 INFO L125 PetriNetUnfolderBase]: For 31983/31983 co-relation queries the response was YES. [2024-06-28 02:49:21,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4496 conditions, 648 events. 350/648 cut-off events. For 31983/31983 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2982 event pairs, 33 based on Foata normal form. 2/649 useless extension candidates. Maximal degree in co-relation 4416. Up to 554 conditions per place. [2024-06-28 02:49:21,925 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 141 selfloop transitions, 28 changer transitions 0/172 dead transitions. [2024-06-28 02:49:21,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 172 transitions, 1939 flow [2024-06-28 02:49:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 02:49:21,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-28 02:49:21,926 INFO L175 Difference]: Start difference. First operand has 168 places, 154 transitions, 1502 flow. Second operand 9 states and 110 transitions. [2024-06-28 02:49:21,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 172 transitions, 1939 flow [2024-06-28 02:49:21,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 172 transitions, 1881 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:21,979 INFO L231 Difference]: Finished difference. Result has 171 places, 159 transitions, 1584 flow [2024-06-28 02:49:21,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1584, PETRI_PLACES=171, PETRI_TRANSITIONS=159} [2024-06-28 02:49:21,979 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-28 02:49:21,979 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 159 transitions, 1584 flow [2024-06-28 02:49:21,980 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 02:49:21,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:21,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:21,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:49:21,980 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:21,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash -755722065, now seen corresponding path program 1 times [2024-06-28 02:49:21,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:21,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579437351] [2024-06-28 02:49:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:21,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579437351] [2024-06-28 02:49:22,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579437351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:22,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:22,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:22,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136565934] [2024-06-28 02:49:22,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:22,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:22,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:22,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:22,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:23,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:23,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 159 transitions, 1584 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 02:49:23,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:23,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:23,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:23,342 INFO L124 PetriNetUnfolderBase]: 353/653 cut-off events. [2024-06-28 02:49:23,343 INFO L125 PetriNetUnfolderBase]: For 32142/32142 co-relation queries the response was YES. [2024-06-28 02:49:23,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4587 conditions, 653 events. 353/653 cut-off events. For 32142/32142 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3024 event pairs, 33 based on Foata normal form. 1/653 useless extension candidates. Maximal degree in co-relation 4505. Up to 563 conditions per place. [2024-06-28 02:49:23,347 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 149 selfloop transitions, 25 changer transitions 0/177 dead transitions. [2024-06-28 02:49:23,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 177 transitions, 2026 flow [2024-06-28 02:49:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:23,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:23,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 02:49:23,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 02:49:23,348 INFO L175 Difference]: Start difference. First operand has 171 places, 159 transitions, 1584 flow. Second operand 10 states and 123 transitions. [2024-06-28 02:49:23,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 177 transitions, 2026 flow [2024-06-28 02:49:23,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 177 transitions, 1956 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:23,408 INFO L231 Difference]: Finished difference. Result has 175 places, 161 transitions, 1623 flow [2024-06-28 02:49:23,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1623, PETRI_PLACES=175, PETRI_TRANSITIONS=161} [2024-06-28 02:49:23,408 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 02:49:23,409 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 161 transitions, 1623 flow [2024-06-28 02:49:23,409 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 02:49:23,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:23,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:23,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:49:23,409 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:23,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:23,409 INFO L85 PathProgramCache]: Analyzing trace with hash -640257915, now seen corresponding path program 2 times [2024-06-28 02:49:23,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:23,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667299598] [2024-06-28 02:49:23,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:23,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:24,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:24,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:24,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667299598] [2024-06-28 02:49:24,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667299598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:24,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:24,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:24,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840382465] [2024-06-28 02:49:24,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:24,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:24,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:24,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:24,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:24,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:24,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 161 transitions, 1623 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 02:49:24,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:24,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:24,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:24,747 INFO L124 PetriNetUnfolderBase]: 371/688 cut-off events. [2024-06-28 02:49:24,747 INFO L125 PetriNetUnfolderBase]: For 38443/38443 co-relation queries the response was YES. [2024-06-28 02:49:24,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5097 conditions, 688 events. 371/688 cut-off events. For 38443/38443 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3239 event pairs, 32 based on Foata normal form. 1/688 useless extension candidates. Maximal degree in co-relation 5014. Up to 551 conditions per place. [2024-06-28 02:49:24,751 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 141 selfloop transitions, 40 changer transitions 0/184 dead transitions. [2024-06-28 02:49:24,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 184 transitions, 2415 flow [2024-06-28 02:49:24,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:24,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 02:49:24,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-28 02:49:24,752 INFO L175 Difference]: Start difference. First operand has 175 places, 161 transitions, 1623 flow. Second operand 10 states and 128 transitions. [2024-06-28 02:49:24,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 184 transitions, 2415 flow [2024-06-28 02:49:24,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 184 transitions, 2291 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 02:49:24,817 INFO L231 Difference]: Finished difference. Result has 177 places, 168 transitions, 1769 flow [2024-06-28 02:49:24,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1769, PETRI_PLACES=177, PETRI_TRANSITIONS=168} [2024-06-28 02:49:24,817 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-28 02:49:24,817 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 168 transitions, 1769 flow [2024-06-28 02:49:24,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:24,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:24,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:24,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:49:24,817 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:24,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:24,818 INFO L85 PathProgramCache]: Analyzing trace with hash -640251405, now seen corresponding path program 3 times [2024-06-28 02:49:24,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:24,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270124384] [2024-06-28 02:49:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:24,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:25,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:25,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270124384] [2024-06-28 02:49:25,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270124384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:25,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:25,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:25,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274328238] [2024-06-28 02:49:25,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:25,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:25,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:25,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:25,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:25,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:25,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 168 transitions, 1769 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 02:49:25,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:25,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:25,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:26,110 INFO L124 PetriNetUnfolderBase]: 367/680 cut-off events. [2024-06-28 02:49:26,110 INFO L125 PetriNetUnfolderBase]: For 38792/38792 co-relation queries the response was YES. [2024-06-28 02:49:26,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5003 conditions, 680 events. 367/680 cut-off events. For 38792/38792 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3193 event pairs, 32 based on Foata normal form. 2/681 useless extension candidates. Maximal degree in co-relation 4919. Up to 548 conditions per place. [2024-06-28 02:49:26,115 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 141 selfloop transitions, 39 changer transitions 0/183 dead transitions. [2024-06-28 02:49:26,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 183 transitions, 2289 flow [2024-06-28 02:49:26,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:26,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:49:26,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 02:49:26,116 INFO L175 Difference]: Start difference. First operand has 177 places, 168 transitions, 1769 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:49:26,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 183 transitions, 2289 flow [2024-06-28 02:49:26,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 183 transitions, 2142 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:26,184 INFO L231 Difference]: Finished difference. Result has 182 places, 168 transitions, 1706 flow [2024-06-28 02:49:26,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1706, PETRI_PLACES=182, PETRI_TRANSITIONS=168} [2024-06-28 02:49:26,185 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-28 02:49:26,185 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 168 transitions, 1706 flow [2024-06-28 02:49:26,185 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 02:49:26,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:26,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:26,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:49:26,185 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:26,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:26,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1280026097, now seen corresponding path program 4 times [2024-06-28 02:49:26,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:26,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238073130] [2024-06-28 02:49:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:26,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:26,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:26,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238073130] [2024-06-28 02:49:26,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238073130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:26,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:26,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:26,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592304629] [2024-06-28 02:49:26,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:26,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:26,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:26,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:26,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:26,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:26,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 168 transitions, 1706 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 02:49:26,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:26,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:26,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:27,266 INFO L124 PetriNetUnfolderBase]: 371/688 cut-off events. [2024-06-28 02:49:27,267 INFO L125 PetriNetUnfolderBase]: For 39597/39597 co-relation queries the response was YES. [2024-06-28 02:49:27,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5017 conditions, 688 events. 371/688 cut-off events. For 39597/39597 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3241 event pairs, 34 based on Foata normal form. 2/689 useless extension candidates. Maximal degree in co-relation 4931. Up to 574 conditions per place. [2024-06-28 02:49:27,272 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 145 selfloop transitions, 35 changer transitions 0/183 dead transitions. [2024-06-28 02:49:27,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 183 transitions, 2140 flow [2024-06-28 02:49:27,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 02:49:27,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-28 02:49:27,273 INFO L175 Difference]: Start difference. First operand has 182 places, 168 transitions, 1706 flow. Second operand 9 states and 110 transitions. [2024-06-28 02:49:27,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 183 transitions, 2140 flow [2024-06-28 02:49:27,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 183 transitions, 2066 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:27,341 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 1764 flow [2024-06-28 02:49:27,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1764, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2024-06-28 02:49:27,342 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-28 02:49:27,342 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 1764 flow [2024-06-28 02:49:27,342 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 02:49:27,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:27,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:27,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:49:27,342 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:27,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1672161097, now seen corresponding path program 4 times [2024-06-28 02:49:27,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:27,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038230252] [2024-06-28 02:49:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:27,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:28,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:28,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038230252] [2024-06-28 02:49:28,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038230252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:28,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:28,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:28,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116692149] [2024-06-28 02:49:28,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:28,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:28,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:28,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:28,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:28,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:28,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 172 transitions, 1764 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 02:49:28,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:28,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:28,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:28,856 INFO L124 PetriNetUnfolderBase]: 379/705 cut-off events. [2024-06-28 02:49:28,856 INFO L125 PetriNetUnfolderBase]: For 41887/41887 co-relation queries the response was YES. [2024-06-28 02:49:28,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5271 conditions, 705 events. 379/705 cut-off events. For 41887/41887 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3362 event pairs, 34 based on Foata normal form. 1/705 useless extension candidates. Maximal degree in co-relation 5183. Up to 569 conditions per place. [2024-06-28 02:49:28,861 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 144 selfloop transitions, 44 changer transitions 0/191 dead transitions. [2024-06-28 02:49:28,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 191 transitions, 2434 flow [2024-06-28 02:49:28,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 02:49:28,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 02:49:28,862 INFO L175 Difference]: Start difference. First operand has 184 places, 172 transitions, 1764 flow. Second operand 10 states and 125 transitions. [2024-06-28 02:49:28,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 191 transitions, 2434 flow [2024-06-28 02:49:28,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 191 transitions, 2353 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:28,933 INFO L231 Difference]: Finished difference. Result has 190 places, 179 transitions, 1949 flow [2024-06-28 02:49:28,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1949, PETRI_PLACES=190, PETRI_TRANSITIONS=179} [2024-06-28 02:49:28,934 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-28 02:49:28,934 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 179 transitions, 1949 flow [2024-06-28 02:49:28,934 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 02:49:28,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:28,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:28,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:49:28,934 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:28,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:28,935 INFO L85 PathProgramCache]: Analyzing trace with hash -474612271, now seen corresponding path program 5 times [2024-06-28 02:49:28,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:28,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730904148] [2024-06-28 02:49:28,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:28,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:29,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730904148] [2024-06-28 02:49:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730904148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:29,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:29,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:29,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409893754] [2024-06-28 02:49:29,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:29,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:29,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:29,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:29,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:29,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:29,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 179 transitions, 1949 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 02:49:29,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:29,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:29,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:30,277 INFO L124 PetriNetUnfolderBase]: 385/717 cut-off events. [2024-06-28 02:49:30,278 INFO L125 PetriNetUnfolderBase]: For 45592/45592 co-relation queries the response was YES. [2024-06-28 02:49:30,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5456 conditions, 717 events. 385/717 cut-off events. For 45592/45592 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3452 event pairs, 34 based on Foata normal form. 2/718 useless extension candidates. Maximal degree in co-relation 5366. Up to 565 conditions per place. [2024-06-28 02:49:30,283 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 143 selfloop transitions, 49 changer transitions 0/195 dead transitions. [2024-06-28 02:49:30,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 195 transitions, 2585 flow [2024-06-28 02:49:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:30,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:30,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:49:30,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 02:49:30,284 INFO L175 Difference]: Start difference. First operand has 190 places, 179 transitions, 1949 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:49:30,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 195 transitions, 2585 flow [2024-06-28 02:49:30,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 195 transitions, 2414 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:30,361 INFO L231 Difference]: Finished difference. Result has 195 places, 183 transitions, 2000 flow [2024-06-28 02:49:30,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2000, PETRI_PLACES=195, PETRI_TRANSITIONS=183} [2024-06-28 02:49:30,362 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-28 02:49:30,362 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 183 transitions, 2000 flow [2024-06-28 02:49:30,362 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 02:49:30,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:30,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:30,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:49:30,362 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:30,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:30,363 INFO L85 PathProgramCache]: Analyzing trace with hash -468116593, now seen corresponding path program 1 times [2024-06-28 02:49:30,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:30,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008272088] [2024-06-28 02:49:30,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:30,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:31,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008272088] [2024-06-28 02:49:31,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008272088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:31,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:31,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:31,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985185831] [2024-06-28 02:49:31,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:31,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:31,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:31,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:31,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 183 transitions, 2000 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 02:49:31,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:31,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:31,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:32,164 INFO L124 PetriNetUnfolderBase]: 389/725 cut-off events. [2024-06-28 02:49:32,164 INFO L125 PetriNetUnfolderBase]: For 46805/46805 co-relation queries the response was YES. [2024-06-28 02:49:32,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5498 conditions, 725 events. 389/725 cut-off events. For 46805/46805 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3520 event pairs, 34 based on Foata normal form. 2/726 useless extension candidates. Maximal degree in co-relation 5406. Up to 642 conditions per place. [2024-06-28 02:49:32,170 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 21 changer transitions 0/196 dead transitions. [2024-06-28 02:49:32,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 196 transitions, 2432 flow [2024-06-28 02:49:32,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 02:49:32,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 02:49:32,171 INFO L175 Difference]: Start difference. First operand has 195 places, 183 transitions, 2000 flow. Second operand 10 states and 117 transitions. [2024-06-28 02:49:32,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 196 transitions, 2432 flow [2024-06-28 02:49:32,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 196 transitions, 2321 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:32,243 INFO L231 Difference]: Finished difference. Result has 199 places, 184 transitions, 1955 flow [2024-06-28 02:49:32,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1955, PETRI_PLACES=199, PETRI_TRANSITIONS=184} [2024-06-28 02:49:32,243 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-28 02:49:32,243 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 184 transitions, 1955 flow [2024-06-28 02:49:32,243 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 02:49:32,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:32,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:32,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:49:32,244 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:32,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash -468125521, now seen corresponding path program 6 times [2024-06-28 02:49:32,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:32,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259465453] [2024-06-28 02:49:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:32,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:33,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:33,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259465453] [2024-06-28 02:49:33,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259465453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:33,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:33,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:33,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347830819] [2024-06-28 02:49:33,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:33,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:33,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:33,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:33,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:33,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:33,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 184 transitions, 1955 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 02:49:33,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:33,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:33,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:33,614 INFO L124 PetriNetUnfolderBase]: 410/763 cut-off events. [2024-06-28 02:49:33,614 INFO L125 PetriNetUnfolderBase]: For 53819/53819 co-relation queries the response was YES. [2024-06-28 02:49:33,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6111 conditions, 763 events. 410/763 cut-off events. For 53819/53819 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3718 event pairs, 35 based on Foata normal form. 2/764 useless extension candidates. Maximal degree in co-relation 6017. Up to 509 conditions per place. [2024-06-28 02:49:33,620 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 131 selfloop transitions, 72 changer transitions 0/206 dead transitions. [2024-06-28 02:49:33,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 206 transitions, 2869 flow [2024-06-28 02:49:33,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 02:49:33,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:49:33,621 INFO L175 Difference]: Start difference. First operand has 199 places, 184 transitions, 1955 flow. Second operand 10 states and 130 transitions. [2024-06-28 02:49:33,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 206 transitions, 2869 flow [2024-06-28 02:49:33,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 206 transitions, 2813 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:33,735 INFO L231 Difference]: Finished difference. Result has 201 places, 191 transitions, 2257 flow [2024-06-28 02:49:33,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2257, PETRI_PLACES=201, PETRI_TRANSITIONS=191} [2024-06-28 02:49:33,735 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-28 02:49:33,736 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 191 transitions, 2257 flow [2024-06-28 02:49:33,736 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 02:49:33,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:33,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:33,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:49:33,736 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:33,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:33,737 INFO L85 PathProgramCache]: Analyzing trace with hash 434047269, now seen corresponding path program 7 times [2024-06-28 02:49:33,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:33,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169364555] [2024-06-28 02:49:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:33,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:34,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:34,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169364555] [2024-06-28 02:49:34,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169364555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:34,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:34,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:34,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85713344] [2024-06-28 02:49:34,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:34,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:34,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:34,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:34,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:34,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:34,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 191 transitions, 2257 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 02:49:34,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:34,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:34,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:35,154 INFO L124 PetriNetUnfolderBase]: 418/780 cut-off events. [2024-06-28 02:49:35,155 INFO L125 PetriNetUnfolderBase]: For 57275/57275 co-relation queries the response was YES. [2024-06-28 02:49:35,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6537 conditions, 780 events. 418/780 cut-off events. For 57275/57275 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3854 event pairs, 34 based on Foata normal form. 1/780 useless extension candidates. Maximal degree in co-relation 6442. Up to 517 conditions per place. [2024-06-28 02:49:35,161 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 74 changer transitions 0/212 dead transitions. [2024-06-28 02:49:35,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 212 transitions, 3267 flow [2024-06-28 02:49:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 02:49:35,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-28 02:49:35,162 INFO L175 Difference]: Start difference. First operand has 201 places, 191 transitions, 2257 flow. Second operand 10 states and 132 transitions. [2024-06-28 02:49:35,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 212 transitions, 3267 flow [2024-06-28 02:49:35,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 212 transitions, 3100 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:35,260 INFO L231 Difference]: Finished difference. Result has 207 places, 196 transitions, 2416 flow [2024-06-28 02:49:35,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2416, PETRI_PLACES=207, PETRI_TRANSITIONS=196} [2024-06-28 02:49:35,260 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-28 02:49:35,261 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 196 transitions, 2416 flow [2024-06-28 02:49:35,261 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 02:49:35,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:35,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:35,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:49:35,261 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:35,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:35,262 INFO L85 PathProgramCache]: Analyzing trace with hash 434053779, now seen corresponding path program 8 times [2024-06-28 02:49:35,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:35,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921981989] [2024-06-28 02:49:35,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:35,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:36,173 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 02:49:36,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:36,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921981989] [2024-06-28 02:49:36,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921981989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:36,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:36,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:36,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688421438] [2024-06-28 02:49:36,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:36,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:36,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:36,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:36,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:36,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:36,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 196 transitions, 2416 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 02:49:36,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:36,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:36,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:36,580 INFO L124 PetriNetUnfolderBase]: 414/774 cut-off events. [2024-06-28 02:49:36,580 INFO L125 PetriNetUnfolderBase]: For 56414/56414 co-relation queries the response was YES. [2024-06-28 02:49:36,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6386 conditions, 774 events. 414/774 cut-off events. For 56414/56414 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3817 event pairs, 34 based on Foata normal form. 2/775 useless extension candidates. Maximal degree in co-relation 6288. Up to 514 conditions per place. [2024-06-28 02:49:36,586 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 139 selfloop transitions, 71 changer transitions 0/213 dead transitions. [2024-06-28 02:49:36,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 213 transitions, 3312 flow [2024-06-28 02:49:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:36,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 02:49:36,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-28 02:49:36,587 INFO L175 Difference]: Start difference. First operand has 207 places, 196 transitions, 2416 flow. Second operand 10 states and 133 transitions. [2024-06-28 02:49:36,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 213 transitions, 3312 flow [2024-06-28 02:49:36,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 213 transitions, 2999 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:36,706 INFO L231 Difference]: Finished difference. Result has 209 places, 196 transitions, 2251 flow [2024-06-28 02:49:36,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2251, PETRI_PLACES=209, PETRI_TRANSITIONS=196} [2024-06-28 02:49:36,707 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-28 02:49:36,707 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 196 transitions, 2251 flow [2024-06-28 02:49:36,707 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 02:49:36,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:36,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:36,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:49:36,707 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:36,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:36,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2079230321, now seen corresponding path program 5 times [2024-06-28 02:49:36,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:36,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672048333] [2024-06-28 02:49:36,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:36,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:37,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:37,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672048333] [2024-06-28 02:49:37,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672048333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:37,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:37,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:37,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005823685] [2024-06-28 02:49:37,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:37,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:37,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:37,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:37,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:37,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:37,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 196 transitions, 2251 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 02:49:37,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:37,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:37,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:37,900 INFO L124 PetriNetUnfolderBase]: 411/769 cut-off events. [2024-06-28 02:49:37,900 INFO L125 PetriNetUnfolderBase]: For 53176/53176 co-relation queries the response was YES. [2024-06-28 02:49:37,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5980 conditions, 769 events. 411/769 cut-off events. For 53176/53176 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3809 event pairs, 39 based on Foata normal form. 2/770 useless extension candidates. Maximal degree in co-relation 5883. Up to 631 conditions per place. [2024-06-28 02:49:37,906 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 165 selfloop transitions, 38 changer transitions 0/206 dead transitions. [2024-06-28 02:49:37,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 206 transitions, 2687 flow [2024-06-28 02:49:37,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:37,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 02:49:37,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 02:49:37,907 INFO L175 Difference]: Start difference. First operand has 209 places, 196 transitions, 2251 flow. Second operand 9 states and 109 transitions. [2024-06-28 02:49:37,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 206 transitions, 2687 flow [2024-06-28 02:49:38,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 206 transitions, 2510 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 02:49:38,002 INFO L231 Difference]: Finished difference. Result has 209 places, 197 transitions, 2164 flow [2024-06-28 02:49:38,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2164, PETRI_PLACES=209, PETRI_TRANSITIONS=197} [2024-06-28 02:49:38,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-28 02:49:38,003 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 197 transitions, 2164 flow [2024-06-28 02:49:38,003 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 02:49:38,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:38,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:38,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:49:38,003 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:38,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1256378969, now seen corresponding path program 1 times [2024-06-28 02:49:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017725834] [2024-06-28 02:49:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:39,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017725834] [2024-06-28 02:49:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017725834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:39,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:39,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:39,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53739851] [2024-06-28 02:49:39,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:39,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:39,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:39,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:39,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:39,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 197 transitions, 2164 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 02:49:39,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:39,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:39,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:39,621 INFO L124 PetriNetUnfolderBase]: 414/774 cut-off events. [2024-06-28 02:49:39,621 INFO L125 PetriNetUnfolderBase]: For 52393/52393 co-relation queries the response was YES. [2024-06-28 02:49:39,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5946 conditions, 774 events. 414/774 cut-off events. For 52393/52393 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3842 event pairs, 42 based on Foata normal form. 1/774 useless extension candidates. Maximal degree in co-relation 5848. Up to 579 conditions per place. [2024-06-28 02:49:39,627 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 149 selfloop transitions, 58 changer transitions 0/210 dead transitions. [2024-06-28 02:49:39,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 210 transitions, 2772 flow [2024-06-28 02:49:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 02:49:39,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-28 02:49:39,628 INFO L175 Difference]: Start difference. First operand has 209 places, 197 transitions, 2164 flow. Second operand 10 states and 129 transitions. [2024-06-28 02:49:39,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 210 transitions, 2772 flow [2024-06-28 02:49:39,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 210 transitions, 2602 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 02:49:39,733 INFO L231 Difference]: Finished difference. Result has 209 places, 199 transitions, 2157 flow [2024-06-28 02:49:39,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2157, PETRI_PLACES=209, PETRI_TRANSITIONS=199} [2024-06-28 02:49:39,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-28 02:49:39,733 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 199 transitions, 2157 flow [2024-06-28 02:49:39,734 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 02:49:39,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:39,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:39,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:49:39,734 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:39,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:39,734 INFO L85 PathProgramCache]: Analyzing trace with hash 505623887, now seen corresponding path program 9 times [2024-06-28 02:49:39,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:39,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794703690] [2024-06-28 02:49:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:39,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:40,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:40,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794703690] [2024-06-28 02:49:40,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794703690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:40,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:40,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:40,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507149136] [2024-06-28 02:49:40,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:40,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:40,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:40,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:40,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:40,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:40,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 199 transitions, 2157 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 02:49:40,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:40,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:40,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:41,057 INFO L124 PetriNetUnfolderBase]: 427/799 cut-off events. [2024-06-28 02:49:41,058 INFO L125 PetriNetUnfolderBase]: For 59153/59153 co-relation queries the response was YES. [2024-06-28 02:49:41,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6359 conditions, 799 events. 427/799 cut-off events. For 59153/59153 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4029 event pairs, 37 based on Foata normal form. 1/799 useless extension candidates. Maximal degree in co-relation 6262. Up to 492 conditions per place. [2024-06-28 02:49:41,064 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 141 selfloop transitions, 86 changer transitions 0/230 dead transitions. [2024-06-28 02:49:41,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 230 transitions, 3411 flow [2024-06-28 02:49:41,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 02:49:41,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:49:41,065 INFO L175 Difference]: Start difference. First operand has 209 places, 199 transitions, 2157 flow. Second operand 10 states and 130 transitions. [2024-06-28 02:49:41,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 230 transitions, 3411 flow [2024-06-28 02:49:41,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 230 transitions, 3165 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-28 02:49:41,180 INFO L231 Difference]: Finished difference. Result has 212 places, 214 transitions, 2526 flow [2024-06-28 02:49:41,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2526, PETRI_PLACES=212, PETRI_TRANSITIONS=214} [2024-06-28 02:49:41,181 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 02:49:41,181 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 214 transitions, 2526 flow [2024-06-28 02:49:41,181 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 02:49:41,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:41,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:41,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:49:41,182 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:41,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:41,182 INFO L85 PathProgramCache]: Analyzing trace with hash 617714419, now seen corresponding path program 10 times [2024-06-28 02:49:41,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:41,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55275445] [2024-06-28 02:49:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:41,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:42,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:42,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55275445] [2024-06-28 02:49:42,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55275445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:42,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:42,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:42,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938966358] [2024-06-28 02:49:42,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:42,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:42,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:42,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:42,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:42,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:42,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 214 transitions, 2526 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 02:49:42,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:42,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:42,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:42,732 INFO L124 PetriNetUnfolderBase]: 440/824 cut-off events. [2024-06-28 02:49:42,732 INFO L125 PetriNetUnfolderBase]: For 66212/66212 co-relation queries the response was YES. [2024-06-28 02:49:42,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6820 conditions, 824 events. 440/824 cut-off events. For 66212/66212 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4176 event pairs, 37 based on Foata normal form. 1/824 useless extension candidates. Maximal degree in co-relation 6721. Up to 381 conditions per place. [2024-06-28 02:49:42,738 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 114 selfloop transitions, 117 changer transitions 0/234 dead transitions. [2024-06-28 02:49:42,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 234 transitions, 3633 flow [2024-06-28 02:49:42,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:42,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-28 02:49:42,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-28 02:49:42,739 INFO L175 Difference]: Start difference. First operand has 212 places, 214 transitions, 2526 flow. Second operand 10 states and 134 transitions. [2024-06-28 02:49:42,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 234 transitions, 3633 flow [2024-06-28 02:49:42,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 234 transitions, 3345 flow, removed 110 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:42,897 INFO L231 Difference]: Finished difference. Result has 219 places, 222 transitions, 2734 flow [2024-06-28 02:49:42,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2278, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2734, PETRI_PLACES=219, PETRI_TRANSITIONS=222} [2024-06-28 02:49:42,897 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-28 02:49:42,897 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 222 transitions, 2734 flow [2024-06-28 02:49:42,897 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 02:49:42,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:42,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:42,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:49:42,898 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:42,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:42,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1256379279, now seen corresponding path program 2 times [2024-06-28 02:49:42,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:42,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463105090] [2024-06-28 02:49:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:42,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:44,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:44,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463105090] [2024-06-28 02:49:44,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463105090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:44,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:44,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:44,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826153590] [2024-06-28 02:49:44,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:44,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:44,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:44,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:44,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:44,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:44,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 222 transitions, 2734 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 02:49:44,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:44,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:44,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:44,679 INFO L124 PetriNetUnfolderBase]: 444/832 cut-off events. [2024-06-28 02:49:44,680 INFO L125 PetriNetUnfolderBase]: For 68859/68859 co-relation queries the response was YES. [2024-06-28 02:49:44,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6899 conditions, 832 events. 444/832 cut-off events. For 68859/68859 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4250 event pairs, 35 based on Foata normal form. 2/833 useless extension candidates. Maximal degree in co-relation 6798. Up to 729 conditions per place. [2024-06-28 02:49:44,686 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 207 selfloop transitions, 23 changer transitions 0/233 dead transitions. [2024-06-28 02:49:44,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 233 transitions, 3236 flow [2024-06-28 02:49:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:44,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 02:49:44,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 02:49:44,687 INFO L175 Difference]: Start difference. First operand has 219 places, 222 transitions, 2734 flow. Second operand 10 states and 116 transitions. [2024-06-28 02:49:44,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 233 transitions, 3236 flow [2024-06-28 02:49:44,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 233 transitions, 3155 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:44,826 INFO L231 Difference]: Finished difference. Result has 225 places, 223 transitions, 2725 flow [2024-06-28 02:49:44,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2725, PETRI_PLACES=225, PETRI_TRANSITIONS=223} [2024-06-28 02:49:44,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-28 02:49:44,826 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 223 transitions, 2725 flow [2024-06-28 02:49:44,827 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 02:49:44,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:44,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:44,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:49:44,827 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:44,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1256370599, now seen corresponding path program 2 times [2024-06-28 02:49:44,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:44,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043132542] [2024-06-28 02:49:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:44,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:46,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:46,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043132542] [2024-06-28 02:49:46,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043132542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:46,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:46,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:46,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429121811] [2024-06-28 02:49:46,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:46,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:46,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:46,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:46,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:46,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:46,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 223 transitions, 2725 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 02:49:46,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:46,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:46,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:46,650 INFO L124 PetriNetUnfolderBase]: 447/833 cut-off events. [2024-06-28 02:49:46,650 INFO L125 PetriNetUnfolderBase]: For 67469/67469 co-relation queries the response was YES. [2024-06-28 02:49:46,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6954 conditions, 833 events. 447/833 cut-off events. For 67469/67469 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4209 event pairs, 42 based on Foata normal form. 1/833 useless extension candidates. Maximal degree in co-relation 6851. Up to 649 conditions per place. [2024-06-28 02:49:46,657 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 52 changer transitions 0/235 dead transitions. [2024-06-28 02:49:46,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 235 transitions, 3253 flow [2024-06-28 02:49:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:46,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:49:46,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 02:49:46,658 INFO L175 Difference]: Start difference. First operand has 225 places, 223 transitions, 2725 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:49:46,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 235 transitions, 3253 flow [2024-06-28 02:49:46,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 235 transitions, 3188 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:46,796 INFO L231 Difference]: Finished difference. Result has 227 places, 225 transitions, 2811 flow [2024-06-28 02:49:46,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2811, PETRI_PLACES=227, PETRI_TRANSITIONS=225} [2024-06-28 02:49:46,796 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-28 02:49:46,796 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 225 transitions, 2811 flow [2024-06-28 02:49:46,796 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 02:49:46,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:46,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:46,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:49:46,797 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:46,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash 617960497, now seen corresponding path program 3 times [2024-06-28 02:49:46,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:46,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167678402] [2024-06-28 02:49:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:46,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:48,365 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 02:49:48,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:48,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167678402] [2024-06-28 02:49:48,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167678402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:48,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:48,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:48,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21758522] [2024-06-28 02:49:48,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:48,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:48,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:48,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:48,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:48,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:48,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 225 transitions, 2811 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 02:49:48,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:48,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:48,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:48,779 INFO L124 PetriNetUnfolderBase]: 451/845 cut-off events. [2024-06-28 02:49:48,780 INFO L125 PetriNetUnfolderBase]: For 72454/72454 co-relation queries the response was YES. [2024-06-28 02:49:48,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7078 conditions, 845 events. 451/845 cut-off events. For 72454/72454 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4324 event pairs, 35 based on Foata normal form. 2/846 useless extension candidates. Maximal degree in co-relation 6974. Up to 719 conditions per place. [2024-06-28 02:49:48,787 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 200 selfloop transitions, 33 changer transitions 0/236 dead transitions. [2024-06-28 02:49:48,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 236 transitions, 3321 flow [2024-06-28 02:49:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:49:48,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 02:49:48,788 INFO L175 Difference]: Start difference. First operand has 227 places, 225 transitions, 2811 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:49:48,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 236 transitions, 3321 flow [2024-06-28 02:49:48,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 236 transitions, 3192 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:48,921 INFO L231 Difference]: Finished difference. Result has 229 places, 226 transitions, 2776 flow [2024-06-28 02:49:48,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2682, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2776, PETRI_PLACES=229, PETRI_TRANSITIONS=226} [2024-06-28 02:49:48,921 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-28 02:49:48,921 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 226 transitions, 2776 flow [2024-06-28 02:49:48,922 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 02:49:48,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:48,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:48,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:49:48,922 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:48,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:48,922 INFO L85 PathProgramCache]: Analyzing trace with hash 617951569, now seen corresponding path program 11 times [2024-06-28 02:49:48,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:48,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10438008] [2024-06-28 02:49:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:48,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:49,917 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 02:49:49,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:49,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10438008] [2024-06-28 02:49:49,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10438008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:49,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:49,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:49,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327870377] [2024-06-28 02:49:49,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:49,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:49,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:49,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:49,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 226 transitions, 2776 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 02:49:49,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:49,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:49,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:50,318 INFO L124 PetriNetUnfolderBase]: 454/848 cut-off events. [2024-06-28 02:49:50,318 INFO L125 PetriNetUnfolderBase]: For 72491/72491 co-relation queries the response was YES. [2024-06-28 02:49:50,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 848 events. 454/848 cut-off events. For 72491/72491 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4322 event pairs, 37 based on Foata normal form. 1/848 useless extension candidates. Maximal degree in co-relation 7015. Up to 539 conditions per place. [2024-06-28 02:49:50,325 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 89 changer transitions 0/243 dead transitions. [2024-06-28 02:49:50,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 243 transitions, 3657 flow [2024-06-28 02:49:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:50,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 02:49:50,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:49:50,326 INFO L175 Difference]: Start difference. First operand has 229 places, 226 transitions, 2776 flow. Second operand 10 states and 130 transitions. [2024-06-28 02:49:50,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 243 transitions, 3657 flow [2024-06-28 02:49:50,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 243 transitions, 3557 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 02:49:50,465 INFO L231 Difference]: Finished difference. Result has 231 places, 229 transitions, 2937 flow [2024-06-28 02:49:50,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2937, PETRI_PLACES=231, PETRI_TRANSITIONS=229} [2024-06-28 02:49:50,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 02:49:50,465 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 229 transitions, 2937 flow [2024-06-28 02:49:50,465 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 02:49:50,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:50,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:50,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:49:50,466 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:50,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:50,466 INFO L85 PathProgramCache]: Analyzing trace with hash 277716227, now seen corresponding path program 12 times [2024-06-28 02:49:50,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:50,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256354719] [2024-06-28 02:49:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:50,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:51,507 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 02:49:51,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:51,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256354719] [2024-06-28 02:49:51,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256354719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:51,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:51,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:51,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088795102] [2024-06-28 02:49:51,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:51,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:51,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:51,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:51,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:51,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:51,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 229 transitions, 2937 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 02:49:51,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:51,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:51,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:52,046 INFO L124 PetriNetUnfolderBase]: 462/867 cut-off events. [2024-06-28 02:49:52,046 INFO L125 PetriNetUnfolderBase]: For 78883/78883 co-relation queries the response was YES. [2024-06-28 02:49:52,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7528 conditions, 867 events. 462/867 cut-off events. For 78883/78883 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4470 event pairs, 39 based on Foata normal form. 1/867 useless extension candidates. Maximal degree in co-relation 7422. Up to 701 conditions per place. [2024-06-28 02:49:52,052 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 193 selfloop transitions, 47 changer transitions 0/243 dead transitions. [2024-06-28 02:49:52,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 243 transitions, 3737 flow [2024-06-28 02:49:52,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:52,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 02:49:52,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 02:49:52,054 INFO L175 Difference]: Start difference. First operand has 231 places, 229 transitions, 2937 flow. Second operand 10 states and 124 transitions. [2024-06-28 02:49:52,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 243 transitions, 3737 flow [2024-06-28 02:49:52,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 243 transitions, 3497 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:52,207 INFO L231 Difference]: Finished difference. Result has 235 places, 233 transitions, 2960 flow [2024-06-28 02:49:52,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2705, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2960, PETRI_PLACES=235, PETRI_TRANSITIONS=233} [2024-06-28 02:49:52,208 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 02:49:52,208 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 233 transitions, 2960 flow [2024-06-28 02:49:52,208 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 02:49:52,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:52,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:52,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:49:52,208 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:52,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:52,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1256370351, now seen corresponding path program 13 times [2024-06-28 02:49:52,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:52,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679372020] [2024-06-28 02:49:52,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:52,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:53,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:53,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679372020] [2024-06-28 02:49:53,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679372020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:53,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:53,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:53,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282079877] [2024-06-28 02:49:53,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:53,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:53,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:53,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:53,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:53,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:53,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 233 transitions, 2960 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 02:49:53,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:53,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:53,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:53,659 INFO L124 PetriNetUnfolderBase]: 473/885 cut-off events. [2024-06-28 02:49:53,659 INFO L125 PetriNetUnfolderBase]: For 85302/85302 co-relation queries the response was YES. [2024-06-28 02:49:53,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7732 conditions, 885 events. 473/885 cut-off events. For 85302/85302 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4559 event pairs, 40 based on Foata normal form. 2/886 useless extension candidates. Maximal degree in co-relation 7625. Up to 649 conditions per place. [2024-06-28 02:49:53,667 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 182 selfloop transitions, 66 changer transitions 0/251 dead transitions. [2024-06-28 02:49:53,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 251 transitions, 3993 flow [2024-06-28 02:49:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:53,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:53,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 02:49:53,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 02:49:53,668 INFO L175 Difference]: Start difference. First operand has 235 places, 233 transitions, 2960 flow. Second operand 10 states and 131 transitions. [2024-06-28 02:49:53,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 251 transitions, 3993 flow [2024-06-28 02:49:53,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 251 transitions, 3840 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:53,810 INFO L231 Difference]: Finished difference. Result has 238 places, 239 transitions, 3150 flow [2024-06-28 02:49:53,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3150, PETRI_PLACES=238, PETRI_TRANSITIONS=239} [2024-06-28 02:49:53,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 02:49:53,811 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 239 transitions, 3150 flow [2024-06-28 02:49:53,811 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 02:49:53,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:53,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:53,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:49:53,812 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:53,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:53,812 INFO L85 PathProgramCache]: Analyzing trace with hash 913535887, now seen corresponding path program 4 times [2024-06-28 02:49:53,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:53,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363610170] [2024-06-28 02:49:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:53,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:55,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:55,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363610170] [2024-06-28 02:49:55,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363610170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:55,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:55,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:55,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839099727] [2024-06-28 02:49:55,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:55,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:55,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:55,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:55,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:55,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 239 transitions, 3150 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 02:49:55,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:55,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:55,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:55,557 INFO L124 PetriNetUnfolderBase]: 477/893 cut-off events. [2024-06-28 02:49:55,557 INFO L125 PetriNetUnfolderBase]: For 87215/87215 co-relation queries the response was YES. [2024-06-28 02:49:55,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7849 conditions, 893 events. 477/893 cut-off events. For 87215/87215 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4634 event pairs, 39 based on Foata normal form. 2/894 useless extension candidates. Maximal degree in co-relation 7741. Up to 778 conditions per place. [2024-06-28 02:49:55,564 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 229 selfloop transitions, 21 changer transitions 0/253 dead transitions. [2024-06-28 02:49:55,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 253 transitions, 3844 flow [2024-06-28 02:49:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:49:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:49:55,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:49:55,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 02:49:55,565 INFO L175 Difference]: Start difference. First operand has 238 places, 239 transitions, 3150 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:49:55,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 253 transitions, 3844 flow [2024-06-28 02:49:55,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 253 transitions, 3483 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:55,742 INFO L231 Difference]: Finished difference. Result has 241 places, 240 transitions, 2859 flow [2024-06-28 02:49:55,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2789, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2859, PETRI_PLACES=241, PETRI_TRANSITIONS=240} [2024-06-28 02:49:55,743 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-28 02:49:55,743 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 240 transitions, 2859 flow [2024-06-28 02:49:55,743 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 02:49:55,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:55,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:55,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:49:55,744 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:55,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:55,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1230365597, now seen corresponding path program 3 times [2024-06-28 02:49:55,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:55,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002873737] [2024-06-28 02:49:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:55,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:57,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:57,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002873737] [2024-06-28 02:49:57,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002873737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:57,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:57,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:57,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338623395] [2024-06-28 02:49:57,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:57,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:57,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:57,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:57,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:57,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:57,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 240 transitions, 2859 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 02:49:57,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:57,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:57,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:57,755 INFO L124 PetriNetUnfolderBase]: 480/898 cut-off events. [2024-06-28 02:49:57,756 INFO L125 PetriNetUnfolderBase]: For 85379/85379 co-relation queries the response was YES. [2024-06-28 02:49:57,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7569 conditions, 898 events. 480/898 cut-off events. For 85379/85379 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4660 event pairs, 41 based on Foata normal form. 1/898 useless extension candidates. Maximal degree in co-relation 7461. Up to 796 conditions per place. [2024-06-28 02:49:57,763 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 228 selfloop transitions, 23 changer transitions 0/254 dead transitions. [2024-06-28 02:49:57,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 254 transitions, 3573 flow [2024-06-28 02:49:57,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:49:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:49:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 02:49:57,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 02:49:57,765 INFO L175 Difference]: Start difference. First operand has 241 places, 240 transitions, 2859 flow. Second operand 12 states and 137 transitions. [2024-06-28 02:49:57,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 254 transitions, 3573 flow [2024-06-28 02:49:57,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 254 transitions, 3514 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:57,954 INFO L231 Difference]: Finished difference. Result has 245 places, 242 transitions, 2893 flow [2024-06-28 02:49:57,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2893, PETRI_PLACES=245, PETRI_TRANSITIONS=242} [2024-06-28 02:49:57,955 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-28 02:49:57,955 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 242 transitions, 2893 flow [2024-06-28 02:49:57,955 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 02:49:57,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:57,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:57,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:49:57,955 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:57,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:57,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1256133201, now seen corresponding path program 14 times [2024-06-28 02:49:57,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:57,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147001266] [2024-06-28 02:49:57,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:57,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:58,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:58,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147001266] [2024-06-28 02:49:58,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147001266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:58,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:58,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:58,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356369190] [2024-06-28 02:49:58,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:58,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:58,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:58,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:58,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:59,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:49:59,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 242 transitions, 2893 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 02:49:59,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:59,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:49:59,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:59,427 INFO L124 PetriNetUnfolderBase]: 493/923 cut-off events. [2024-06-28 02:49:59,427 INFO L125 PetriNetUnfolderBase]: For 93303/93303 co-relation queries the response was YES. [2024-06-28 02:49:59,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7980 conditions, 923 events. 493/923 cut-off events. For 93303/93303 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4837 event pairs, 39 based on Foata normal form. 1/923 useless extension candidates. Maximal degree in co-relation 7871. Up to 676 conditions per place. [2024-06-28 02:49:59,435 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 185 selfloop transitions, 73 changer transitions 0/261 dead transitions. [2024-06-28 02:49:59,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 261 transitions, 4094 flow [2024-06-28 02:49:59,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:59,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:59,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 02:49:59,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-28 02:49:59,436 INFO L175 Difference]: Start difference. First operand has 245 places, 242 transitions, 2893 flow. Second operand 10 states and 133 transitions. [2024-06-28 02:49:59,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 261 transitions, 4094 flow [2024-06-28 02:49:59,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 261 transitions, 4007 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 02:49:59,621 INFO L231 Difference]: Finished difference. Result has 245 places, 249 transitions, 3180 flow [2024-06-28 02:49:59,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2810, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3180, PETRI_PLACES=245, PETRI_TRANSITIONS=249} [2024-06-28 02:49:59,621 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-28 02:49:59,622 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 249 transitions, 3180 flow [2024-06-28 02:49:59,622 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 02:49:59,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:59,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:59,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:49:59,622 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:59,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:59,622 INFO L85 PathProgramCache]: Analyzing trace with hash 903051687, now seen corresponding path program 4 times [2024-06-28 02:49:59,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:59,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387396305] [2024-06-28 02:49:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:59,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:01,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:01,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387396305] [2024-06-28 02:50:01,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387396305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:01,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:01,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:01,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106435571] [2024-06-28 02:50:01,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:01,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:01,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:01,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:01,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:01,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:01,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 249 transitions, 3180 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 02:50:01,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:01,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:01,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:01,912 INFO L124 PetriNetUnfolderBase]: 491/920 cut-off events. [2024-06-28 02:50:01,912 INFO L125 PetriNetUnfolderBase]: For 93277/93277 co-relation queries the response was YES. [2024-06-28 02:50:01,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7996 conditions, 920 events. 491/920 cut-off events. For 93277/93277 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4834 event pairs, 42 based on Foata normal form. 1/920 useless extension candidates. Maximal degree in co-relation 7886. Up to 815 conditions per place. [2024-06-28 02:50:01,924 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 232 selfloop transitions, 22 changer transitions 0/257 dead transitions. [2024-06-28 02:50:01,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 257 transitions, 3706 flow [2024-06-28 02:50:01,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:01,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 02:50:01,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 02:50:01,926 INFO L175 Difference]: Start difference. First operand has 245 places, 249 transitions, 3180 flow. Second operand 9 states and 107 transitions. [2024-06-28 02:50:01,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 257 transitions, 3706 flow [2024-06-28 02:50:02,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 257 transitions, 3448 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:02,108 INFO L231 Difference]: Finished difference. Result has 247 places, 249 transitions, 2976 flow [2024-06-28 02:50:02,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2976, PETRI_PLACES=247, PETRI_TRANSITIONS=249} [2024-06-28 02:50:02,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-28 02:50:02,109 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 249 transitions, 2976 flow [2024-06-28 02:50:02,109 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 02:50:02,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:02,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:02,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:50:02,109 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:02,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:02,110 INFO L85 PathProgramCache]: Analyzing trace with hash 283978847, now seen corresponding path program 15 times [2024-06-28 02:50:02,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:02,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548626038] [2024-06-28 02:50:02,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:02,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:03,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:03,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548626038] [2024-06-28 02:50:03,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548626038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:03,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:03,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:03,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738008998] [2024-06-28 02:50:03,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:03,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:03,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:03,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:03,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:03,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:03,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 249 transitions, 2976 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 02:50:03,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:03,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:03,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:03,619 INFO L124 PetriNetUnfolderBase]: 489/917 cut-off events. [2024-06-28 02:50:03,619 INFO L125 PetriNetUnfolderBase]: For 90581/90581 co-relation queries the response was YES. [2024-06-28 02:50:03,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7609 conditions, 917 events. 489/917 cut-off events. For 90581/90581 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4811 event pairs, 41 based on Foata normal form. 1/917 useless extension candidates. Maximal degree in co-relation 7500. Up to 720 conditions per place. [2024-06-28 02:50:03,626 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 58 changer transitions 0/259 dead transitions. [2024-06-28 02:50:03,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 259 transitions, 3660 flow [2024-06-28 02:50:03,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:03,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:03,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 02:50:03,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-28 02:50:03,627 INFO L175 Difference]: Start difference. First operand has 247 places, 249 transitions, 2976 flow. Second operand 10 states and 128 transitions. [2024-06-28 02:50:03,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 259 transitions, 3660 flow [2024-06-28 02:50:03,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 259 transitions, 3601 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:03,809 INFO L231 Difference]: Finished difference. Result has 248 places, 249 transitions, 3040 flow [2024-06-28 02:50:03,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2919, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3040, PETRI_PLACES=248, PETRI_TRANSITIONS=249} [2024-06-28 02:50:03,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-28 02:50:03,809 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 249 transitions, 3040 flow [2024-06-28 02:50:03,809 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 02:50:03,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:03,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:03,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:50:03,810 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:03,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:03,810 INFO L85 PathProgramCache]: Analyzing trace with hash -887405025, now seen corresponding path program 5 times [2024-06-28 02:50:03,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:03,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458010865] [2024-06-28 02:50:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:03,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:05,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:05,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458010865] [2024-06-28 02:50:05,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458010865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:05,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:05,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:05,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73652895] [2024-06-28 02:50:05,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:05,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:05,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:05,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:05,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:05,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:05,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 249 transitions, 3040 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 02:50:05,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:05,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:05,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:05,660 INFO L124 PetriNetUnfolderBase]: 487/914 cut-off events. [2024-06-28 02:50:05,661 INFO L125 PetriNetUnfolderBase]: For 88717/88717 co-relation queries the response was YES. [2024-06-28 02:50:05,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7580 conditions, 914 events. 487/914 cut-off events. For 88717/88717 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4794 event pairs, 42 based on Foata normal form. 1/914 useless extension candidates. Maximal degree in co-relation 7471. Up to 718 conditions per place. [2024-06-28 02:50:05,668 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 205 selfloop transitions, 51 changer transitions 0/259 dead transitions. [2024-06-28 02:50:05,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 259 transitions, 3578 flow [2024-06-28 02:50:05,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:50:05,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 02:50:05,669 INFO L175 Difference]: Start difference. First operand has 248 places, 249 transitions, 3040 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:50:05,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 259 transitions, 3578 flow [2024-06-28 02:50:05,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 259 transitions, 3399 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:05,881 INFO L231 Difference]: Finished difference. Result has 251 places, 249 transitions, 2968 flow [2024-06-28 02:50:05,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2968, PETRI_PLACES=251, PETRI_TRANSITIONS=249} [2024-06-28 02:50:05,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-28 02:50:05,882 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 249 transitions, 2968 flow [2024-06-28 02:50:05,882 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 02:50:05,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:05,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:05,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:50:05,882 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:05,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:05,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1230365287, now seen corresponding path program 5 times [2024-06-28 02:50:05,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:05,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659484] [2024-06-28 02:50:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:05,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:07,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:07,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659484] [2024-06-28 02:50:07,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:07,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:07,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:07,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188104196] [2024-06-28 02:50:07,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:07,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:07,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:07,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:07,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:07,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:07,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 249 transitions, 2968 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 02:50:07,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:07,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:07,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:07,540 INFO L124 PetriNetUnfolderBase]: 484/909 cut-off events. [2024-06-28 02:50:07,541 INFO L125 PetriNetUnfolderBase]: For 88585/88585 co-relation queries the response was YES. [2024-06-28 02:50:07,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7348 conditions, 909 events. 484/909 cut-off events. For 88585/88585 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4774 event pairs, 39 based on Foata normal form. 2/910 useless extension candidates. Maximal degree in co-relation 7238. Up to 807 conditions per place. [2024-06-28 02:50:07,548 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 237 selfloop transitions, 18 changer transitions 0/258 dead transitions. [2024-06-28 02:50:07,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 258 transitions, 3498 flow [2024-06-28 02:50:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 02:50:07,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 02:50:07,549 INFO L175 Difference]: Start difference. First operand has 251 places, 249 transitions, 2968 flow. Second operand 9 states and 106 transitions. [2024-06-28 02:50:07,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 258 transitions, 3498 flow [2024-06-28 02:50:07,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 258 transitions, 3371 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:07,772 INFO L231 Difference]: Finished difference. Result has 252 places, 249 transitions, 2882 flow [2024-06-28 02:50:07,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2882, PETRI_PLACES=252, PETRI_TRANSITIONS=249} [2024-06-28 02:50:07,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-28 02:50:07,773 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 249 transitions, 2882 flow [2024-06-28 02:50:07,773 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 02:50:07,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:07,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:07,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:50:07,773 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:07,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:07,774 INFO L85 PathProgramCache]: Analyzing trace with hash 277722737, now seen corresponding path program 16 times [2024-06-28 02:50:07,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:07,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581583674] [2024-06-28 02:50:07,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:07,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:08,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:08,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581583674] [2024-06-28 02:50:08,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581583674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:08,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:08,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853988241] [2024-06-28 02:50:08,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:08,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:08,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:08,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:08,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:08,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:08,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 249 transitions, 2882 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 02:50:08,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:08,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:08,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:09,135 INFO L124 PetriNetUnfolderBase]: 482/906 cut-off events. [2024-06-28 02:50:09,136 INFO L125 PetriNetUnfolderBase]: For 83914/83914 co-relation queries the response was YES. [2024-06-28 02:50:09,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7152 conditions, 906 events. 482/906 cut-off events. For 83914/83914 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4755 event pairs, 39 based on Foata normal form. 1/906 useless extension candidates. Maximal degree in co-relation 7041. Up to 737 conditions per place. [2024-06-28 02:50:09,143 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 208 selfloop transitions, 47 changer transitions 0/258 dead transitions. [2024-06-28 02:50:09,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 258 transitions, 3412 flow [2024-06-28 02:50:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 02:50:09,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 02:50:09,144 INFO L175 Difference]: Start difference. First operand has 252 places, 249 transitions, 2882 flow. Second operand 10 states and 122 transitions. [2024-06-28 02:50:09,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 258 transitions, 3412 flow [2024-06-28 02:50:09,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 258 transitions, 3290 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:09,320 INFO L231 Difference]: Finished difference. Result has 253 places, 249 transitions, 2859 flow [2024-06-28 02:50:09,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2859, PETRI_PLACES=253, PETRI_TRANSITIONS=249} [2024-06-28 02:50:09,320 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-28 02:50:09,320 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 249 transitions, 2859 flow [2024-06-28 02:50:09,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:09,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:09,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:09,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:50:09,320 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:09,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:09,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1240493545, now seen corresponding path program 17 times [2024-06-28 02:50:09,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:09,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539269790] [2024-06-28 02:50:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:09,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:10,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:10,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539269790] [2024-06-28 02:50:10,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539269790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:10,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:10,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:10,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959126211] [2024-06-28 02:50:10,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:10,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:10,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:10,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 249 transitions, 2859 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 02:50:10,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:10,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:10,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:10,772 INFO L124 PetriNetUnfolderBase]: 480/903 cut-off events. [2024-06-28 02:50:10,773 INFO L125 PetriNetUnfolderBase]: For 82882/82882 co-relation queries the response was YES. [2024-06-28 02:50:10,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7041 conditions, 903 events. 480/903 cut-off events. For 82882/82882 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4728 event pairs, 39 based on Foata normal form. 1/903 useless extension candidates. Maximal degree in co-relation 6929. Up to 812 conditions per place. [2024-06-28 02:50:10,780 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 238 selfloop transitions, 17 changer transitions 0/258 dead transitions. [2024-06-28 02:50:10,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 258 transitions, 3389 flow [2024-06-28 02:50:10,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:10,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:10,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:50:10,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 02:50:10,781 INFO L175 Difference]: Start difference. First operand has 253 places, 249 transitions, 2859 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:50:10,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 258 transitions, 3389 flow [2024-06-28 02:50:10,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 258 transitions, 3251 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:10,970 INFO L231 Difference]: Finished difference. Result has 255 places, 249 transitions, 2760 flow [2024-06-28 02:50:10,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2721, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2760, PETRI_PLACES=255, PETRI_TRANSITIONS=249} [2024-06-28 02:50:10,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-28 02:50:10,970 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 249 transitions, 2760 flow [2024-06-28 02:50:10,970 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 02:50:10,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:10,970 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 02:50:10,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:50:10,971 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:10,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:10,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1759987830, now seen corresponding path program 1 times [2024-06-28 02:50:10,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:10,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370904687] [2024-06-28 02:50:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:10,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:12,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:12,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370904687] [2024-06-28 02:50:12,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370904687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:12,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:12,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:12,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788966447] [2024-06-28 02:50:12,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:12,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:12,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:12,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:12,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:12,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:12,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 249 transitions, 2760 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 02:50:12,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:12,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:12,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:12,638 INFO L124 PetriNetUnfolderBase]: 497/938 cut-off events. [2024-06-28 02:50:12,638 INFO L125 PetriNetUnfolderBase]: For 87704/87704 co-relation queries the response was YES. [2024-06-28 02:50:12,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7112 conditions, 938 events. 497/938 cut-off events. For 87704/87704 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5015 event pairs, 35 based on Foata normal form. 2/939 useless extension candidates. Maximal degree in co-relation 6999. Up to 794 conditions per place. [2024-06-28 02:50:12,646 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 246 selfloop transitions, 23 changer transitions 0/272 dead transitions. [2024-06-28 02:50:12,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 272 transitions, 3403 flow [2024-06-28 02:50:12,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:12,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:50:12,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:50:12,647 INFO L175 Difference]: Start difference. First operand has 255 places, 249 transitions, 2760 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:50:12,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 272 transitions, 3403 flow [2024-06-28 02:50:12,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 272 transitions, 3346 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:50:12,838 INFO L231 Difference]: Finished difference. Result has 259 places, 256 transitions, 2834 flow [2024-06-28 02:50:12,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2834, PETRI_PLACES=259, PETRI_TRANSITIONS=256} [2024-06-28 02:50:12,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-28 02:50:12,838 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 256 transitions, 2834 flow [2024-06-28 02:50:12,838 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 02:50:12,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:12,839 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 02:50:12,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:50:12,839 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:12,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:12,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1763649240, now seen corresponding path program 2 times [2024-06-28 02:50:12,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:12,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324667719] [2024-06-28 02:50:12,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:12,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:13,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:13,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324667719] [2024-06-28 02:50:13,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324667719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:13,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:13,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:13,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844409703] [2024-06-28 02:50:13,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:13,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:13,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:13,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:13,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:13,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:13,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 256 transitions, 2834 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 02:50:13,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:13,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:13,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:14,275 INFO L124 PetriNetUnfolderBase]: 501/946 cut-off events. [2024-06-28 02:50:14,275 INFO L125 PetriNetUnfolderBase]: For 91540/91540 co-relation queries the response was YES. [2024-06-28 02:50:14,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7261 conditions, 946 events. 501/946 cut-off events. For 91540/91540 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5063 event pairs, 32 based on Foata normal form. 2/947 useless extension candidates. Maximal degree in co-relation 7144. Up to 809 conditions per place. [2024-06-28 02:50:14,283 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 245 selfloop transitions, 26 changer transitions 0/274 dead transitions. [2024-06-28 02:50:14,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 274 transitions, 3452 flow [2024-06-28 02:50:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:14,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 02:50:14,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 02:50:14,284 INFO L175 Difference]: Start difference. First operand has 259 places, 256 transitions, 2834 flow. Second operand 10 states and 123 transitions. [2024-06-28 02:50:14,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 274 transitions, 3452 flow [2024-06-28 02:50:14,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 274 transitions, 3394 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 02:50:14,493 INFO L231 Difference]: Finished difference. Result has 265 places, 257 transitions, 2868 flow [2024-06-28 02:50:14,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2868, PETRI_PLACES=265, PETRI_TRANSITIONS=257} [2024-06-28 02:50:14,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-28 02:50:14,493 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 257 transitions, 2868 flow [2024-06-28 02:50:14,494 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 02:50:14,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:14,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:14,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:50:14,494 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:14,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:14,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1952551924, now seen corresponding path program 3 times [2024-06-28 02:50:14,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:14,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764435303] [2024-06-28 02:50:14,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:14,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:15,473 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 02:50:15,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:15,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764435303] [2024-06-28 02:50:15,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764435303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:15,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:15,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:15,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107270636] [2024-06-28 02:50:15,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:15,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:15,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:15,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:15,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:15,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:15,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 257 transitions, 2868 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 02:50:15,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:15,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:15,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:15,996 INFO L124 PetriNetUnfolderBase]: 505/954 cut-off events. [2024-06-28 02:50:15,997 INFO L125 PetriNetUnfolderBase]: For 94011/94011 co-relation queries the response was YES. [2024-06-28 02:50:16,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7338 conditions, 954 events. 505/954 cut-off events. For 94011/94011 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5126 event pairs, 34 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 7220. Up to 822 conditions per place. [2024-06-28 02:50:16,003 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 244 selfloop transitions, 27 changer transitions 0/274 dead transitions. [2024-06-28 02:50:16,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 274 transitions, 3486 flow [2024-06-28 02:50:16,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:16,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 02:50:16,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 02:50:16,007 INFO L175 Difference]: Start difference. First operand has 265 places, 257 transitions, 2868 flow. Second operand 10 states and 123 transitions. [2024-06-28 02:50:16,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 274 transitions, 3486 flow [2024-06-28 02:50:16,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 274 transitions, 3404 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:16,215 INFO L231 Difference]: Finished difference. Result has 267 places, 258 transitions, 2882 flow [2024-06-28 02:50:16,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2882, PETRI_PLACES=267, PETRI_TRANSITIONS=258} [2024-06-28 02:50:16,216 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-28 02:50:16,216 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 258 transitions, 2882 flow [2024-06-28 02:50:16,216 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 02:50:16,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:16,216 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 02:50:16,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:50:16,217 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:16,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:16,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1621474346, now seen corresponding path program 4 times [2024-06-28 02:50:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:16,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856513906] [2024-06-28 02:50:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:16,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:17,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:17,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856513906] [2024-06-28 02:50:17,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856513906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:17,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:17,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:17,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856657803] [2024-06-28 02:50:17,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:17,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:17,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:17,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:17,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:17,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:17,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 258 transitions, 2882 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 02:50:17,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:17,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:17,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:17,846 INFO L124 PetriNetUnfolderBase]: 509/962 cut-off events. [2024-06-28 02:50:17,846 INFO L125 PetriNetUnfolderBase]: For 97316/97316 co-relation queries the response was YES. [2024-06-28 02:50:17,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7402 conditions, 962 events. 509/962 cut-off events. For 97316/97316 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5185 event pairs, 37 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 7283. Up to 808 conditions per place. [2024-06-28 02:50:17,854 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 238 selfloop transitions, 33 changer transitions 0/274 dead transitions. [2024-06-28 02:50:17,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 274 transitions, 3504 flow [2024-06-28 02:50:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 02:50:17,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 02:50:17,855 INFO L175 Difference]: Start difference. First operand has 267 places, 258 transitions, 2882 flow. Second operand 10 states and 122 transitions. [2024-06-28 02:50:17,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 274 transitions, 3504 flow [2024-06-28 02:50:18,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 274 transitions, 3418 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:18,087 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 2921 flow [2024-06-28 02:50:18,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2921, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2024-06-28 02:50:18,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-28 02:50:18,088 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 2921 flow [2024-06-28 02:50:18,088 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 02:50:18,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:18,088 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 02:50:18,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:50:18,088 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:18,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash -547974042, now seen corresponding path program 5 times [2024-06-28 02:50:18,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:18,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690166272] [2024-06-28 02:50:18,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:18,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:19,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:19,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690166272] [2024-06-28 02:50:19,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690166272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:19,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:19,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:19,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077802086] [2024-06-28 02:50:19,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:19,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:19,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:19,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:19,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:19,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:19,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 260 transitions, 2921 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 02:50:19,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:19,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:19,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:19,457 INFO L124 PetriNetUnfolderBase]: 513/970 cut-off events. [2024-06-28 02:50:19,457 INFO L125 PetriNetUnfolderBase]: For 99780/99780 co-relation queries the response was YES. [2024-06-28 02:50:19,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7484 conditions, 970 events. 513/970 cut-off events. For 99780/99780 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5273 event pairs, 38 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 7363. Up to 833 conditions per place. [2024-06-28 02:50:19,465 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 244 selfloop transitions, 29 changer transitions 0/276 dead transitions. [2024-06-28 02:50:19,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 276 transitions, 3543 flow [2024-06-28 02:50:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 02:50:19,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:50:19,467 INFO L175 Difference]: Start difference. First operand has 270 places, 260 transitions, 2921 flow. Second operand 10 states and 120 transitions. [2024-06-28 02:50:19,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 276 transitions, 3543 flow [2024-06-28 02:50:19,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 276 transitions, 3448 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:19,714 INFO L231 Difference]: Finished difference. Result has 273 places, 261 transitions, 2930 flow [2024-06-28 02:50:19,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2826, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2930, PETRI_PLACES=273, PETRI_TRANSITIONS=261} [2024-06-28 02:50:19,715 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-28 02:50:19,715 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 261 transitions, 2930 flow [2024-06-28 02:50:19,715 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 02:50:19,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:19,715 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 02:50:19,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:50:19,715 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:19,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:19,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1626836726, now seen corresponding path program 6 times [2024-06-28 02:50:19,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:19,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416400310] [2024-06-28 02:50:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:19,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:20,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:20,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416400310] [2024-06-28 02:50:20,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416400310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:20,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:20,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:20,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138795779] [2024-06-28 02:50:20,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:20,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:20,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:20,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:20,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 261 transitions, 2930 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 02:50:20,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:20,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:20,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:21,265 INFO L124 PetriNetUnfolderBase]: 517/978 cut-off events. [2024-06-28 02:50:21,265 INFO L125 PetriNetUnfolderBase]: For 102255/102255 co-relation queries the response was YES. [2024-06-28 02:50:21,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7547 conditions, 978 events. 517/978 cut-off events. For 102255/102255 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5307 event pairs, 37 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 7425. Up to 811 conditions per place. [2024-06-28 02:50:21,273 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 235 selfloop transitions, 38 changer transitions 0/276 dead transitions. [2024-06-28 02:50:21,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 276 transitions, 3552 flow [2024-06-28 02:50:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:21,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 02:50:21,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 02:50:21,274 INFO L175 Difference]: Start difference. First operand has 273 places, 261 transitions, 2930 flow. Second operand 10 states and 123 transitions. [2024-06-28 02:50:21,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 276 transitions, 3552 flow [2024-06-28 02:50:21,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 276 transitions, 3458 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:21,494 INFO L231 Difference]: Finished difference. Result has 275 places, 262 transitions, 2960 flow [2024-06-28 02:50:21,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2836, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2960, PETRI_PLACES=275, PETRI_TRANSITIONS=262} [2024-06-28 02:50:21,494 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-28 02:50:21,494 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 262 transitions, 2960 flow [2024-06-28 02:50:21,495 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 02:50:21,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:21,495 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 02:50:21,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:50:21,495 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:21,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1763803062, now seen corresponding path program 1 times [2024-06-28 02:50:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:21,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54417850] [2024-06-28 02:50:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:21,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:22,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:22,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54417850] [2024-06-28 02:50:22,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54417850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:22,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:22,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:22,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728157811] [2024-06-28 02:50:22,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:22,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:22,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:22,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:22,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:22,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:22,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 262 transitions, 2960 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 02:50:22,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:22,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:22,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:23,392 INFO L124 PetriNetUnfolderBase]: 515/975 cut-off events. [2024-06-28 02:50:23,392 INFO L125 PetriNetUnfolderBase]: For 96796/96796 co-relation queries the response was YES. [2024-06-28 02:50:23,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7406 conditions, 975 events. 515/975 cut-off events. For 96796/96796 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5293 event pairs, 37 based on Foata normal form. 1/975 useless extension candidates. Maximal degree in co-relation 7283. Up to 843 conditions per place. [2024-06-28 02:50:23,401 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 247 selfloop transitions, 30 changer transitions 0/280 dead transitions. [2024-06-28 02:50:23,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 280 transitions, 3608 flow [2024-06-28 02:50:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:23,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:50:23,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 02:50:23,402 INFO L175 Difference]: Start difference. First operand has 275 places, 262 transitions, 2960 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:50:23,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 280 transitions, 3608 flow [2024-06-28 02:50:23,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 280 transitions, 3494 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:23,596 INFO L231 Difference]: Finished difference. Result has 278 places, 264 transitions, 2969 flow [2024-06-28 02:50:23,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2846, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2969, PETRI_PLACES=278, PETRI_TRANSITIONS=264} [2024-06-28 02:50:23,597 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-28 02:50:23,597 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 264 transitions, 2969 flow [2024-06-28 02:50:23,597 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 02:50:23,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:23,597 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 02:50:23,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:50:23,597 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:23,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:23,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1608408652, now seen corresponding path program 2 times [2024-06-28 02:50:23,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:23,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466483982] [2024-06-28 02:50:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:23,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:24,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:24,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466483982] [2024-06-28 02:50:24,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466483982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:24,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:24,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:24,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118822727] [2024-06-28 02:50:24,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:24,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:24,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:24,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:24,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:25,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:25,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 264 transitions, 2969 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 02:50:25,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:25,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:25,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:25,607 INFO L124 PetriNetUnfolderBase]: 518/980 cut-off events. [2024-06-28 02:50:25,607 INFO L125 PetriNetUnfolderBase]: For 98131/98131 co-relation queries the response was YES. [2024-06-28 02:50:25,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7410 conditions, 980 events. 518/980 cut-off events. For 98131/98131 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5318 event pairs, 39 based on Foata normal form. 1/980 useless extension candidates. Maximal degree in co-relation 7286. Up to 829 conditions per place. [2024-06-28 02:50:25,616 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 240 selfloop transitions, 39 changer transitions 0/282 dead transitions. [2024-06-28 02:50:25,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 282 transitions, 3651 flow [2024-06-28 02:50:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:50:25,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:50:25,617 INFO L175 Difference]: Start difference. First operand has 278 places, 264 transitions, 2969 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:50:25,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 282 transitions, 3651 flow [2024-06-28 02:50:25,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 282 transitions, 3544 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:25,844 INFO L231 Difference]: Finished difference. Result has 281 places, 268 transitions, 3054 flow [2024-06-28 02:50:25,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3054, PETRI_PLACES=281, PETRI_TRANSITIONS=268} [2024-06-28 02:50:25,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-28 02:50:25,844 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 268 transitions, 3054 flow [2024-06-28 02:50:25,844 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 02:50:25,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:25,845 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 02:50:25,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:50:25,845 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:25,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:25,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1627044488, now seen corresponding path program 3 times [2024-06-28 02:50:25,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:25,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705324172] [2024-06-28 02:50:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:25,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:27,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705324172] [2024-06-28 02:50:27,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705324172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:27,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:27,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:27,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726067774] [2024-06-28 02:50:27,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:27,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:27,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:27,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:27,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:27,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:27,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 268 transitions, 3054 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 02:50:27,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:27,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:27,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:28,165 INFO L124 PetriNetUnfolderBase]: 516/977 cut-off events. [2024-06-28 02:50:28,165 INFO L125 PetriNetUnfolderBase]: For 96709/96709 co-relation queries the response was YES. [2024-06-28 02:50:28,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7316 conditions, 977 events. 516/977 cut-off events. For 96709/96709 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5317 event pairs, 39 based on Foata normal form. 1/977 useless extension candidates. Maximal degree in co-relation 7190. Up to 814 conditions per place. [2024-06-28 02:50:28,174 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 234 selfloop transitions, 45 changer transitions 0/282 dead transitions. [2024-06-28 02:50:28,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 282 transitions, 3646 flow [2024-06-28 02:50:28,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:50:28,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:50:28,176 INFO L175 Difference]: Start difference. First operand has 281 places, 268 transitions, 3054 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:50:28,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 282 transitions, 3646 flow [2024-06-28 02:50:28,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 282 transitions, 3490 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:28,379 INFO L231 Difference]: Finished difference. Result has 285 places, 268 transitions, 2993 flow [2024-06-28 02:50:28,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2898, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2993, PETRI_PLACES=285, PETRI_TRANSITIONS=268} [2024-06-28 02:50:28,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 02:50:28,379 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 268 transitions, 2993 flow [2024-06-28 02:50:28,380 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 02:50:28,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:28,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:28,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:50:28,380 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:28,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:28,380 INFO L85 PathProgramCache]: Analyzing trace with hash -560682337, now seen corresponding path program 1 times [2024-06-28 02:50:28,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:28,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377585655] [2024-06-28 02:50:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:28,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:29,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:29,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377585655] [2024-06-28 02:50:29,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377585655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:29,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:29,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:29,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832687657] [2024-06-28 02:50:29,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:29,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:29,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:29,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:29,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:30,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:30,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 268 transitions, 2993 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 02:50:30,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:30,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:30,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:30,582 INFO L124 PetriNetUnfolderBase]: 532/1013 cut-off events. [2024-06-28 02:50:30,582 INFO L125 PetriNetUnfolderBase]: For 131320/131320 co-relation queries the response was YES. [2024-06-28 02:50:30,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7482 conditions, 1013 events. 532/1013 cut-off events. For 131320/131320 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5559 event pairs, 43 based on Foata normal form. 10/1022 useless extension candidates. Maximal degree in co-relation 7355. Up to 830 conditions per place. [2024-06-28 02:50:30,592 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 244 selfloop transitions, 36 changer transitions 4/287 dead transitions. [2024-06-28 02:50:30,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 287 transitions, 3683 flow [2024-06-28 02:50:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:30,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 02:50:30,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-28 02:50:30,593 INFO L175 Difference]: Start difference. First operand has 285 places, 268 transitions, 2993 flow. Second operand 11 states and 137 transitions. [2024-06-28 02:50:30,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 287 transitions, 3683 flow [2024-06-28 02:50:30,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 287 transitions, 3551 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:50:30,842 INFO L231 Difference]: Finished difference. Result has 285 places, 268 transitions, 2956 flow [2024-06-28 02:50:30,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2956, PETRI_PLACES=285, PETRI_TRANSITIONS=268} [2024-06-28 02:50:30,843 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 02:50:30,843 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 268 transitions, 2956 flow [2024-06-28 02:50:30,843 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 02:50:30,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:30,844 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 02:50:30,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:50:30,844 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:30,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash 491321476, now seen corresponding path program 7 times [2024-06-28 02:50:30,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:30,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009307631] [2024-06-28 02:50:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:30,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:31,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:31,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009307631] [2024-06-28 02:50:31,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009307631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:31,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:31,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:31,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560321763] [2024-06-28 02:50:31,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:31,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:31,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:31,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:31,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:31,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:31,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 268 transitions, 2956 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 02:50:31,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:31,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:31,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:32,301 INFO L124 PetriNetUnfolderBase]: 530/1011 cut-off events. [2024-06-28 02:50:32,301 INFO L125 PetriNetUnfolderBase]: For 105864/105864 co-relation queries the response was YES. [2024-06-28 02:50:32,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7514 conditions, 1011 events. 530/1011 cut-off events. For 105864/105864 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5572 event pairs, 45 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 7386. Up to 827 conditions per place. [2024-06-28 02:50:32,310 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 231 selfloop transitions, 47 changer transitions 0/281 dead transitions. [2024-06-28 02:50:32,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 281 transitions, 3584 flow [2024-06-28 02:50:32,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:32,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 02:50:32,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 02:50:32,311 INFO L175 Difference]: Start difference. First operand has 285 places, 268 transitions, 2956 flow. Second operand 10 states and 122 transitions. [2024-06-28 02:50:32,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 281 transitions, 3584 flow [2024-06-28 02:50:32,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 281 transitions, 3491 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:32,542 INFO L231 Difference]: Finished difference. Result has 286 places, 269 transitions, 3007 flow [2024-06-28 02:50:32,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2863, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3007, PETRI_PLACES=286, PETRI_TRANSITIONS=269} [2024-06-28 02:50:32,542 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-06-28 02:50:32,542 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 269 transitions, 3007 flow [2024-06-28 02:50:32,542 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 02:50:32,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:32,542 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 02:50:32,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:50:32,543 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:32,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:32,543 INFO L85 PathProgramCache]: Analyzing trace with hash 292019686, now seen corresponding path program 8 times [2024-06-28 02:50:32,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:32,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072534517] [2024-06-28 02:50:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:32,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:33,677 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 02:50:33,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:33,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072534517] [2024-06-28 02:50:33,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072534517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:33,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:33,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:33,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815647785] [2024-06-28 02:50:33,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:33,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:33,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:33,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:33,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:33,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:33,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 269 transitions, 3007 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 02:50:33,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:33,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:33,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:34,199 INFO L124 PetriNetUnfolderBase]: 534/1019 cut-off events. [2024-06-28 02:50:34,199 INFO L125 PetriNetUnfolderBase]: For 108957/108957 co-relation queries the response was YES. [2024-06-28 02:50:34,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7640 conditions, 1019 events. 534/1019 cut-off events. For 108957/108957 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5618 event pairs, 41 based on Foata normal form. 2/1020 useless extension candidates. Maximal degree in co-relation 7511. Up to 849 conditions per place. [2024-06-28 02:50:34,208 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 240 selfloop transitions, 40 changer transitions 0/283 dead transitions. [2024-06-28 02:50:34,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 283 transitions, 3651 flow [2024-06-28 02:50:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 02:50:34,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 02:50:34,208 INFO L175 Difference]: Start difference. First operand has 286 places, 269 transitions, 3007 flow. Second operand 10 states and 121 transitions. [2024-06-28 02:50:34,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 283 transitions, 3651 flow [2024-06-28 02:50:34,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 283 transitions, 3515 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:34,447 INFO L231 Difference]: Finished difference. Result has 289 places, 271 transitions, 3019 flow [2024-06-28 02:50:34,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3019, PETRI_PLACES=289, PETRI_TRANSITIONS=271} [2024-06-28 02:50:34,448 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-28 02:50:34,448 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 271 transitions, 3019 flow [2024-06-28 02:50:34,448 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 02:50:34,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:34,448 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 02:50:34,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:50:34,449 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:34,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:34,449 INFO L85 PathProgramCache]: Analyzing trace with hash 291871816, now seen corresponding path program 9 times [2024-06-28 02:50:34,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:34,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695292612] [2024-06-28 02:50:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:34,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:35,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:35,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695292612] [2024-06-28 02:50:35,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695292612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:35,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:35,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:35,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199477806] [2024-06-28 02:50:35,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:35,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:35,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:35,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:35,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:35,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:35,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 271 transitions, 3019 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 02:50:35,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:35,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:35,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:36,299 INFO L124 PetriNetUnfolderBase]: 538/1027 cut-off events. [2024-06-28 02:50:36,299 INFO L125 PetriNetUnfolderBase]: For 111395/111395 co-relation queries the response was YES. [2024-06-28 02:50:36,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7692 conditions, 1027 events. 538/1027 cut-off events. For 111395/111395 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5681 event pairs, 45 based on Foata normal form. 2/1028 useless extension candidates. Maximal degree in co-relation 7561. Up to 874 conditions per place. [2024-06-28 02:50:36,307 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 246 selfloop transitions, 36 changer transitions 0/285 dead transitions. [2024-06-28 02:50:36,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 285 transitions, 3661 flow [2024-06-28 02:50:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:36,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 02:50:36,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:50:36,308 INFO L175 Difference]: Start difference. First operand has 289 places, 271 transitions, 3019 flow. Second operand 10 states and 120 transitions. [2024-06-28 02:50:36,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 285 transitions, 3661 flow [2024-06-28 02:50:36,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 285 transitions, 3543 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:36,557 INFO L231 Difference]: Finished difference. Result has 292 places, 272 transitions, 3027 flow [2024-06-28 02:50:36,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3027, PETRI_PLACES=292, PETRI_TRANSITIONS=272} [2024-06-28 02:50:36,557 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-28 02:50:36,558 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 272 transitions, 3027 flow [2024-06-28 02:50:36,558 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 02:50:36,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:36,558 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 02:50:36,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:50:36,558 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:36,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash 297382066, now seen corresponding path program 10 times [2024-06-28 02:50:36,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:36,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131116901] [2024-06-28 02:50:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:36,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:37,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131116901] [2024-06-28 02:50:37,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131116901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:37,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:37,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:37,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484653285] [2024-06-28 02:50:37,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:37,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:37,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:37,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:37,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:37,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:37,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 272 transitions, 3027 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 02:50:37,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:37,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:37,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:38,149 INFO L124 PetriNetUnfolderBase]: 542/1035 cut-off events. [2024-06-28 02:50:38,149 INFO L125 PetriNetUnfolderBase]: For 113962/113962 co-relation queries the response was YES. [2024-06-28 02:50:38,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7751 conditions, 1035 events. 542/1035 cut-off events. For 113962/113962 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5734 event pairs, 47 based on Foata normal form. 2/1036 useless extension candidates. Maximal degree in co-relation 7619. Up to 879 conditions per place. [2024-06-28 02:50:38,158 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 242 selfloop transitions, 40 changer transitions 0/285 dead transitions. [2024-06-28 02:50:38,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 285 transitions, 3669 flow [2024-06-28 02:50:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:38,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 02:50:38,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 02:50:38,159 INFO L175 Difference]: Start difference. First operand has 292 places, 272 transitions, 3027 flow. Second operand 10 states and 122 transitions. [2024-06-28 02:50:38,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 285 transitions, 3669 flow [2024-06-28 02:50:38,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 285 transitions, 3553 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:38,421 INFO L231 Difference]: Finished difference. Result has 294 places, 273 transitions, 3047 flow [2024-06-28 02:50:38,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2911, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3047, PETRI_PLACES=294, PETRI_TRANSITIONS=273} [2024-06-28 02:50:38,421 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-28 02:50:38,421 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 273 transitions, 3047 flow [2024-06-28 02:50:38,421 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 02:50:38,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:38,422 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 02:50:38,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:50:38,422 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:38,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:38,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1828076950, now seen corresponding path program 4 times [2024-06-28 02:50:38,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:38,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655611832] [2024-06-28 02:50:38,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:38,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:39,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:39,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655611832] [2024-06-28 02:50:39,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655611832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:39,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:39,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:39,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698273715] [2024-06-28 02:50:39,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:39,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:39,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:39,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:39,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:39,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:39,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 273 transitions, 3047 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 02:50:39,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:39,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:39,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:40,335 INFO L124 PetriNetUnfolderBase]: 545/1040 cut-off events. [2024-06-28 02:50:40,335 INFO L125 PetriNetUnfolderBase]: For 111407/111407 co-relation queries the response was YES. [2024-06-28 02:50:40,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7759 conditions, 1040 events. 545/1040 cut-off events. For 111407/111407 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5756 event pairs, 47 based on Foata normal form. 1/1040 useless extension candidates. Maximal degree in co-relation 7626. Up to 875 conditions per place. [2024-06-28 02:50:40,344 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 237 selfloop transitions, 47 changer transitions 0/287 dead transitions. [2024-06-28 02:50:40,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 287 transitions, 3695 flow [2024-06-28 02:50:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:50:40,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 02:50:40,345 INFO L175 Difference]: Start difference. First operand has 294 places, 273 transitions, 3047 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:50:40,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 287 transitions, 3695 flow [2024-06-28 02:50:40,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 287 transitions, 3569 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:40,595 INFO L231 Difference]: Finished difference. Result has 297 places, 275 transitions, 3076 flow [2024-06-28 02:50:40,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2921, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3076, PETRI_PLACES=297, PETRI_TRANSITIONS=275} [2024-06-28 02:50:40,596 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-28 02:50:40,596 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 275 transitions, 3076 flow [2024-06-28 02:50:40,596 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 02:50:40,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:40,596 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 02:50:40,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:50:40,596 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:40,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:40,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1626979981, now seen corresponding path program 2 times [2024-06-28 02:50:40,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:40,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090953434] [2024-06-28 02:50:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:40,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:41,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:41,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090953434] [2024-06-28 02:50:41,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090953434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:41,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:41,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:41,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596739801] [2024-06-28 02:50:41,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:41,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:41,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:41,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:41,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:42,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:42,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 275 transitions, 3076 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 02:50:42,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:42,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:42,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:42,443 INFO L124 PetriNetUnfolderBase]: 552/1053 cut-off events. [2024-06-28 02:50:42,443 INFO L125 PetriNetUnfolderBase]: For 117267/117267 co-relation queries the response was YES. [2024-06-28 02:50:42,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7803 conditions, 1053 events. 552/1053 cut-off events. For 117267/117267 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5867 event pairs, 47 based on Foata normal form. 2/1054 useless extension candidates. Maximal degree in co-relation 7669. Up to 854 conditions per place. [2024-06-28 02:50:42,452 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 234 selfloop transitions, 57 changer transitions 0/294 dead transitions. [2024-06-28 02:50:42,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 294 transitions, 3784 flow [2024-06-28 02:50:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:42,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:50:42,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:50:42,453 INFO L175 Difference]: Start difference. First operand has 297 places, 275 transitions, 3076 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:50:42,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 294 transitions, 3784 flow [2024-06-28 02:50:42,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 294 transitions, 3654 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:42,726 INFO L231 Difference]: Finished difference. Result has 302 places, 281 transitions, 3187 flow [2024-06-28 02:50:42,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2946, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3187, PETRI_PLACES=302, PETRI_TRANSITIONS=281} [2024-06-28 02:50:42,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-28 02:50:42,727 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 281 transitions, 3187 flow [2024-06-28 02:50:42,727 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 02:50:42,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:42,727 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 02:50:42,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:50:42,727 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:42,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:42,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1828278760, now seen corresponding path program 5 times [2024-06-28 02:50:42,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:42,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124026212] [2024-06-28 02:50:42,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:42,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:44,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:44,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124026212] [2024-06-28 02:50:44,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124026212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:44,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:44,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:44,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291913357] [2024-06-28 02:50:44,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:44,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:44,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:44,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:44,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:44,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:44,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 281 transitions, 3187 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 02:50:44,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:44,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:44,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:45,065 INFO L124 PetriNetUnfolderBase]: 550/1050 cut-off events. [2024-06-28 02:50:45,065 INFO L125 PetriNetUnfolderBase]: For 110391/110391 co-relation queries the response was YES. [2024-06-28 02:50:45,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7732 conditions, 1050 events. 550/1050 cut-off events. For 110391/110391 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5863 event pairs, 47 based on Foata normal form. 1/1050 useless extension candidates. Maximal degree in co-relation 7595. Up to 873 conditions per place. [2024-06-28 02:50:45,075 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 238 selfloop transitions, 52 changer transitions 0/293 dead transitions. [2024-06-28 02:50:45,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 293 transitions, 3795 flow [2024-06-28 02:50:45,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:50:45,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:50:45,076 INFO L175 Difference]: Start difference. First operand has 302 places, 281 transitions, 3187 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:50:45,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 293 transitions, 3795 flow [2024-06-28 02:50:45,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 293 transitions, 3578 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:45,353 INFO L231 Difference]: Finished difference. Result has 307 places, 281 transitions, 3079 flow [2024-06-28 02:50:45,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3079, PETRI_PLACES=307, PETRI_TRANSITIONS=281} [2024-06-28 02:50:45,354 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-28 02:50:45,354 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 281 transitions, 3079 flow [2024-06-28 02:50:45,354 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 02:50:45,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:45,354 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 02:50:45,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:50:45,354 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:45,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1626720511, now seen corresponding path program 3 times [2024-06-28 02:50:45,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:45,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564076017] [2024-06-28 02:50:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:45,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:46,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:46,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564076017] [2024-06-28 02:50:46,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564076017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:46,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:46,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:46,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606499672] [2024-06-28 02:50:46,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:46,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:46,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:46,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:46,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 281 transitions, 3079 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 02:50:46,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:46,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:46,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:47,305 INFO L124 PetriNetUnfolderBase]: 554/1058 cut-off events. [2024-06-28 02:50:47,305 INFO L125 PetriNetUnfolderBase]: For 116591/116591 co-relation queries the response was YES. [2024-06-28 02:50:47,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7657 conditions, 1058 events. 554/1058 cut-off events. For 116591/116591 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5924 event pairs, 47 based on Foata normal form. 2/1059 useless extension candidates. Maximal degree in co-relation 7519. Up to 832 conditions per place. [2024-06-28 02:50:47,315 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 224 selfloop transitions, 69 changer transitions 0/296 dead transitions. [2024-06-28 02:50:47,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 296 transitions, 3727 flow [2024-06-28 02:50:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:50:47,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:50:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 02:50:47,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 02:50:47,316 INFO L175 Difference]: Start difference. First operand has 307 places, 281 transitions, 3079 flow. Second operand 12 states and 146 transitions. [2024-06-28 02:50:47,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 296 transitions, 3727 flow [2024-06-28 02:50:47,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 296 transitions, 3600 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 02:50:47,628 INFO L231 Difference]: Finished difference. Result has 309 places, 282 transitions, 3128 flow [2024-06-28 02:50:47,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2952, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3128, PETRI_PLACES=309, PETRI_TRANSITIONS=282} [2024-06-28 02:50:47,629 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 02:50:47,629 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 282 transitions, 3128 flow [2024-06-28 02:50:47,629 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 02:50:47,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:47,630 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 02:50:47,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:50:47,630 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:47,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:47,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1828069231, now seen corresponding path program 4 times [2024-06-28 02:50:47,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:47,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969267543] [2024-06-28 02:50:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:47,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:48,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:48,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969267543] [2024-06-28 02:50:48,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969267543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:48,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:48,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:48,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495339776] [2024-06-28 02:50:48,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:48,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:48,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:48,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:48,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:49,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:49,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 282 transitions, 3128 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 02:50:49,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:49,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:49,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:49,536 INFO L124 PetriNetUnfolderBase]: 574/1102 cut-off events. [2024-06-28 02:50:49,536 INFO L125 PetriNetUnfolderBase]: For 164680/164680 co-relation queries the response was YES. [2024-06-28 02:50:49,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8027 conditions, 1102 events. 574/1102 cut-off events. For 164680/164680 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6236 event pairs, 47 based on Foata normal form. 12/1113 useless extension candidates. Maximal degree in co-relation 7888. Up to 873 conditions per place. [2024-06-28 02:50:49,546 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 246 selfloop transitions, 44 changer transitions 7/300 dead transitions. [2024-06-28 02:50:49,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 300 transitions, 3872 flow [2024-06-28 02:50:49,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:49,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:49,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 02:50:49,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 02:50:49,549 INFO L175 Difference]: Start difference. First operand has 309 places, 282 transitions, 3128 flow. Second operand 11 states and 139 transitions. [2024-06-28 02:50:49,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 300 transitions, 3872 flow [2024-06-28 02:50:49,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 300 transitions, 3687 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-28 02:50:49,866 INFO L231 Difference]: Finished difference. Result has 309 places, 280 transitions, 3035 flow [2024-06-28 02:50:49,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3035, PETRI_PLACES=309, PETRI_TRANSITIONS=280} [2024-06-28 02:50:49,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 02:50:49,869 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 280 transitions, 3035 flow [2024-06-28 02:50:49,870 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 02:50:49,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:49,870 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 02:50:49,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:50:49,870 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:49,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:49,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1626987700, now seen corresponding path program 6 times [2024-06-28 02:50:49,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:49,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009765594] [2024-06-28 02:50:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:49,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:51,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:51,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009765594] [2024-06-28 02:50:51,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009765594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:51,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:51,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:51,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367246674] [2024-06-28 02:50:51,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:51,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:51,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:51,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:51,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:51,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:51,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 280 transitions, 3035 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 02:50:51,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:51,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:51,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:52,260 INFO L124 PetriNetUnfolderBase]: 548/1051 cut-off events. [2024-06-28 02:50:52,260 INFO L125 PetriNetUnfolderBase]: For 109284/109284 co-relation queries the response was YES. [2024-06-28 02:50:52,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7454 conditions, 1051 events. 548/1051 cut-off events. For 109284/109284 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5889 event pairs, 49 based on Foata normal form. 1/1051 useless extension candidates. Maximal degree in co-relation 7316. Up to 831 conditions per place. [2024-06-28 02:50:52,270 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 221 selfloop transitions, 68 changer transitions 0/292 dead transitions. [2024-06-28 02:50:52,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 292 transitions, 3641 flow [2024-06-28 02:50:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:52,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:50:52,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:50:52,271 INFO L175 Difference]: Start difference. First operand has 309 places, 280 transitions, 3035 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:50:52,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 292 transitions, 3641 flow [2024-06-28 02:50:52,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 292 transitions, 3477 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-28 02:50:52,581 INFO L231 Difference]: Finished difference. Result has 310 places, 280 transitions, 3012 flow [2024-06-28 02:50:52,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2871, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3012, PETRI_PLACES=310, PETRI_TRANSITIONS=280} [2024-06-28 02:50:52,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-28 02:50:52,581 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 280 transitions, 3012 flow [2024-06-28 02:50:52,581 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 02:50:52,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:52,582 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 02:50:52,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:50:52,582 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:52,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:52,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1626711211, now seen corresponding path program 5 times [2024-06-28 02:50:52,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:52,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587421891] [2024-06-28 02:50:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:52,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:53,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:53,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587421891] [2024-06-28 02:50:53,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587421891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:53,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:53,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:53,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002634050] [2024-06-28 02:50:53,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:53,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:53,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:53,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:53,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:53,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:53,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 280 transitions, 3012 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 02:50:53,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:53,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:53,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:54,154 INFO L124 PetriNetUnfolderBase]: 581/1118 cut-off events. [2024-06-28 02:50:54,154 INFO L125 PetriNetUnfolderBase]: For 162913/162913 co-relation queries the response was YES. [2024-06-28 02:50:54,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8805 conditions, 1118 events. 581/1118 cut-off events. For 162913/162913 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6297 event pairs, 64 based on Foata normal form. 2/1119 useless extension candidates. Maximal degree in co-relation 8666. Up to 793 conditions per place. [2024-06-28 02:50:54,166 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 228 selfloop transitions, 69 changer transitions 1/301 dead transitions. [2024-06-28 02:50:54,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 301 transitions, 3990 flow [2024-06-28 02:50:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 02:50:54,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-28 02:50:54,167 INFO L175 Difference]: Start difference. First operand has 310 places, 280 transitions, 3012 flow. Second operand 11 states and 141 transitions. [2024-06-28 02:50:54,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 301 transitions, 3990 flow [2024-06-28 02:50:54,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 301 transitions, 3812 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:54,497 INFO L231 Difference]: Finished difference. Result has 312 places, 282 transitions, 3042 flow [2024-06-28 02:50:54,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2834, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3042, PETRI_PLACES=312, PETRI_TRANSITIONS=282} [2024-06-28 02:50:54,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-28 02:50:54,498 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 282 transitions, 3042 flow [2024-06-28 02:50:54,498 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 02:50:54,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:54,499 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 02:50:54,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:50:54,499 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:54,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:54,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1634339350, now seen corresponding path program 7 times [2024-06-28 02:50:54,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:54,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983839878] [2024-06-28 02:50:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:54,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:55,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:55,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:55,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983839878] [2024-06-28 02:50:55,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983839878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:55,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:55,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:55,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424971379] [2024-06-28 02:50:55,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:55,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:55,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:55,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:55,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:56,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:56,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 282 transitions, 3042 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 02:50:56,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:56,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:56,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:56,575 INFO L124 PetriNetUnfolderBase]: 584/1123 cut-off events. [2024-06-28 02:50:56,576 INFO L125 PetriNetUnfolderBase]: For 161482/161482 co-relation queries the response was YES. [2024-06-28 02:50:56,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8905 conditions, 1123 events. 584/1123 cut-off events. For 161482/161482 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6328 event pairs, 66 based on Foata normal form. 1/1123 useless extension candidates. Maximal degree in co-relation 8765. Up to 903 conditions per place. [2024-06-28 02:50:56,587 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 229 selfloop transitions, 64 changer transitions 0/296 dead transitions. [2024-06-28 02:50:56,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 296 transitions, 3710 flow [2024-06-28 02:50:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:56,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:50:56,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:50:56,588 INFO L175 Difference]: Start difference. First operand has 312 places, 282 transitions, 3042 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:50:56,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 296 transitions, 3710 flow [2024-06-28 02:50:56,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 296 transitions, 3588 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:56,946 INFO L231 Difference]: Finished difference. Result has 316 places, 284 transitions, 3111 flow [2024-06-28 02:50:56,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2920, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3111, PETRI_PLACES=316, PETRI_TRANSITIONS=284} [2024-06-28 02:50:56,946 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-28 02:50:56,946 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 284 transitions, 3111 flow [2024-06-28 02:50:56,946 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 02:50:56,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:56,946 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 02:50:56,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:50:56,947 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:56,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:56,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1634129821, now seen corresponding path program 6 times [2024-06-28 02:50:56,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:56,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525879386] [2024-06-28 02:50:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:56,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:58,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:58,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:58,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525879386] [2024-06-28 02:50:58,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525879386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:58,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:58,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:58,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462264906] [2024-06-28 02:50:58,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:58,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:58,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:58,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:58,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:58,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:50:58,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 284 transitions, 3111 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 02:50:58,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:58,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:50:58,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:58,798 INFO L124 PetriNetUnfolderBase]: 581/1118 cut-off events. [2024-06-28 02:50:58,798 INFO L125 PetriNetUnfolderBase]: For 159337/159337 co-relation queries the response was YES. [2024-06-28 02:50:58,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8715 conditions, 1118 events. 581/1118 cut-off events. For 159337/159337 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6292 event pairs, 65 based on Foata normal form. 2/1119 useless extension candidates. Maximal degree in co-relation 8573. Up to 922 conditions per place. [2024-06-28 02:50:58,809 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 242 selfloop transitions, 52 changer transitions 0/297 dead transitions. [2024-06-28 02:50:58,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 297 transitions, 3729 flow [2024-06-28 02:50:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:58,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:50:58,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:50:58,810 INFO L175 Difference]: Start difference. First operand has 316 places, 284 transitions, 3111 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:50:58,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 297 transitions, 3729 flow [2024-06-28 02:50:59,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 297 transitions, 3559 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:59,177 INFO L231 Difference]: Finished difference. Result has 319 places, 284 transitions, 3049 flow [2024-06-28 02:50:59,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3049, PETRI_PLACES=319, PETRI_TRANSITIONS=284} [2024-06-28 02:50:59,177 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-28 02:50:59,178 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 284 transitions, 3049 flow [2024-06-28 02:50:59,178 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 02:50:59,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:59,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:59,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:50:59,178 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:59,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:59,178 INFO L85 PathProgramCache]: Analyzing trace with hash 491529238, now seen corresponding path program 8 times [2024-06-28 02:50:59,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:59,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095668956] [2024-06-28 02:50:59,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:59,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:01,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:01,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095668956] [2024-06-28 02:51:01,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095668956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:01,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:01,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:01,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709443964] [2024-06-28 02:51:01,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:01,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:01,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:01,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:01,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:01,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:01,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 284 transitions, 3049 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 02:51:01,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:01,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:01,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:01,855 INFO L124 PetriNetUnfolderBase]: 579/1115 cut-off events. [2024-06-28 02:51:01,855 INFO L125 PetriNetUnfolderBase]: For 151679/151679 co-relation queries the response was YES. [2024-06-28 02:51:01,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8543 conditions, 1115 events. 579/1115 cut-off events. For 151679/151679 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6304 event pairs, 65 based on Foata normal form. 1/1115 useless extension candidates. Maximal degree in co-relation 8401. Up to 895 conditions per place. [2024-06-28 02:51:01,867 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 230 selfloop transitions, 63 changer transitions 0/296 dead transitions. [2024-06-28 02:51:01,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 296 transitions, 3663 flow [2024-06-28 02:51:01,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:01,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:51:01,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:51:01,868 INFO L175 Difference]: Start difference. First operand has 319 places, 284 transitions, 3049 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:51:01,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 296 transitions, 3663 flow [2024-06-28 02:51:02,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 296 transitions, 3447 flow, removed 35 selfloop flow, removed 12 redundant places. [2024-06-28 02:51:02,298 INFO L231 Difference]: Finished difference. Result has 318 places, 284 transitions, 2964 flow [2024-06-28 02:51:02,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2833, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2964, PETRI_PLACES=318, PETRI_TRANSITIONS=284} [2024-06-28 02:51:02,299 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-28 02:51:02,299 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 284 transitions, 2964 flow [2024-06-28 02:51:02,299 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 02:51:02,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:02,299 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 02:51:02,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:51:02,299 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:02,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:02,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2137664786, now seen corresponding path program 11 times [2024-06-28 02:51:02,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:02,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446726390] [2024-06-28 02:51:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:02,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:03,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:03,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446726390] [2024-06-28 02:51:03,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446726390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:03,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:03,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:03,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606495692] [2024-06-28 02:51:03,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:03,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:03,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:03,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:03,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:03,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:03,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 284 transitions, 2964 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 02:51:03,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:03,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:03,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:03,874 INFO L124 PetriNetUnfolderBase]: 583/1124 cut-off events. [2024-06-28 02:51:03,874 INFO L125 PetriNetUnfolderBase]: For 160062/160062 co-relation queries the response was YES. [2024-06-28 02:51:03,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8577 conditions, 1124 events. 583/1124 cut-off events. For 160062/160062 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6359 event pairs, 67 based on Foata normal form. 2/1125 useless extension candidates. Maximal degree in co-relation 8434. Up to 965 conditions per place. [2024-06-28 02:51:03,885 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 253 selfloop transitions, 40 changer transitions 0/296 dead transitions. [2024-06-28 02:51:03,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 296 transitions, 3633 flow [2024-06-28 02:51:03,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:51:03,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 02:51:03,886 INFO L175 Difference]: Start difference. First operand has 318 places, 284 transitions, 2964 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:51:03,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 296 transitions, 3633 flow [2024-06-28 02:51:04,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 296 transitions, 3464 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:51:04,324 INFO L231 Difference]: Finished difference. Result has 318 places, 286 transitions, 2947 flow [2024-06-28 02:51:04,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2947, PETRI_PLACES=318, PETRI_TRANSITIONS=286} [2024-06-28 02:51:04,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-28 02:51:04,324 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 286 transitions, 2947 flow [2024-06-28 02:51:04,324 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 02:51:04,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:04,325 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 02:51:04,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:51:04,325 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:04,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:04,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1939415546, now seen corresponding path program 12 times [2024-06-28 02:51:04,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:04,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908643736] [2024-06-28 02:51:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:04,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:05,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:05,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:05,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908643736] [2024-06-28 02:51:05,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908643736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:05,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:05,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86226979] [2024-06-28 02:51:05,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:05,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:05,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:05,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 286 transitions, 2947 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 02:51:05,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:05,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:05,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:05,889 INFO L124 PetriNetUnfolderBase]: 587/1132 cut-off events. [2024-06-28 02:51:05,889 INFO L125 PetriNetUnfolderBase]: For 164466/164466 co-relation queries the response was YES. [2024-06-28 02:51:05,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8668 conditions, 1132 events. 587/1132 cut-off events. For 164466/164466 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6413 event pairs, 65 based on Foata normal form. 2/1133 useless extension candidates. Maximal degree in co-relation 8523. Up to 968 conditions per place. [2024-06-28 02:51:05,901 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 256 selfloop transitions, 39 changer transitions 0/298 dead transitions. [2024-06-28 02:51:05,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 298 transitions, 3615 flow [2024-06-28 02:51:05,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:05,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:51:05,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 02:51:05,901 INFO L175 Difference]: Start difference. First operand has 318 places, 286 transitions, 2947 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:51:05,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 298 transitions, 3615 flow [2024-06-28 02:51:06,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 298 transitions, 3490 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 02:51:06,334 INFO L231 Difference]: Finished difference. Result has 321 places, 287 transitions, 2960 flow [2024-06-28 02:51:06,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2960, PETRI_PLACES=321, PETRI_TRANSITIONS=287} [2024-06-28 02:51:06,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-28 02:51:06,335 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 287 transitions, 2960 flow [2024-06-28 02:51:06,335 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 02:51:06,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:06,335 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 02:51:06,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:51:06,335 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:06,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash -56111648, now seen corresponding path program 13 times [2024-06-28 02:51:06,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:06,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110135599] [2024-06-28 02:51:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:06,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:07,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:07,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110135599] [2024-06-28 02:51:07,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110135599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:07,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:07,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:07,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261515034] [2024-06-28 02:51:07,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:07,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:07,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:07,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:07,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:07,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:07,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 287 transitions, 2960 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 02:51:07,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:07,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:07,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:07,880 INFO L124 PetriNetUnfolderBase]: 591/1140 cut-off events. [2024-06-28 02:51:07,880 INFO L125 PetriNetUnfolderBase]: For 167894/167894 co-relation queries the response was YES. [2024-06-28 02:51:07,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8735 conditions, 1140 events. 591/1140 cut-off events. For 167894/167894 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6479 event pairs, 67 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 8589. Up to 913 conditions per place. [2024-06-28 02:51:07,892 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 230 selfloop transitions, 65 changer transitions 0/298 dead transitions. [2024-06-28 02:51:07,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 298 transitions, 3628 flow [2024-06-28 02:51:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:07,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 02:51:07,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 02:51:07,893 INFO L175 Difference]: Start difference. First operand has 321 places, 287 transitions, 2960 flow. Second operand 10 states and 122 transitions. [2024-06-28 02:51:07,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 298 transitions, 3628 flow [2024-06-28 02:51:08,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 298 transitions, 3500 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:08,374 INFO L231 Difference]: Finished difference. Result has 323 places, 288 transitions, 3024 flow [2024-06-28 02:51:08,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3024, PETRI_PLACES=323, PETRI_TRANSITIONS=288} [2024-06-28 02:51:08,374 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-28 02:51:08,374 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 288 transitions, 3024 flow [2024-06-28 02:51:08,374 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 02:51:08,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:08,374 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 02:51:08,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:51:08,375 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:08,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:08,375 INFO L85 PathProgramCache]: Analyzing trace with hash 285419178, now seen corresponding path program 14 times [2024-06-28 02:51:08,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:08,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419419328] [2024-06-28 02:51:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:08,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:09,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:09,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419419328] [2024-06-28 02:51:09,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419419328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:09,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:09,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:09,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666411629] [2024-06-28 02:51:09,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:09,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:09,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:09,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:09,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:09,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:09,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 288 transitions, 3024 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 02:51:09,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:09,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:09,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:09,989 INFO L124 PetriNetUnfolderBase]: 595/1148 cut-off events. [2024-06-28 02:51:09,989 INFO L125 PetriNetUnfolderBase]: For 171366/171366 co-relation queries the response was YES. [2024-06-28 02:51:09,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8852 conditions, 1148 events. 595/1148 cut-off events. For 171366/171366 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6537 event pairs, 69 based on Foata normal form. 2/1149 useless extension candidates. Maximal degree in co-relation 8705. Up to 974 conditions per place. [2024-06-28 02:51:10,001 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 249 selfloop transitions, 47 changer transitions 0/299 dead transitions. [2024-06-28 02:51:10,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 299 transitions, 3696 flow [2024-06-28 02:51:10,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 02:51:10,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 02:51:10,002 INFO L175 Difference]: Start difference. First operand has 323 places, 288 transitions, 3024 flow. Second operand 10 states and 123 transitions. [2024-06-28 02:51:10,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 299 transitions, 3696 flow [2024-06-28 02:51:10,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 299 transitions, 3514 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:10,462 INFO L231 Difference]: Finished difference. Result has 325 places, 289 transitions, 3000 flow [2024-06-28 02:51:10,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3000, PETRI_PLACES=325, PETRI_TRANSITIONS=289} [2024-06-28 02:51:10,462 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 02:51:10,462 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 289 transitions, 3000 flow [2024-06-28 02:51:10,462 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 02:51:10,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:10,462 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 02:51:10,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:51:10,463 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:10,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:10,463 INFO L85 PathProgramCache]: Analyzing trace with hash 91479768, now seen corresponding path program 15 times [2024-06-28 02:51:10,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:10,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149938111] [2024-06-28 02:51:10,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:10,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:11,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:11,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149938111] [2024-06-28 02:51:11,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149938111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:11,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:11,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:11,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786183350] [2024-06-28 02:51:11,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:11,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:11,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:11,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:11,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:11,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:11,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 289 transitions, 3000 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 02:51:11,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:11,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:11,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:12,171 INFO L124 PetriNetUnfolderBase]: 599/1158 cut-off events. [2024-06-28 02:51:12,171 INFO L125 PetriNetUnfolderBase]: For 174774/174774 co-relation queries the response was YES. [2024-06-28 02:51:12,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8883 conditions, 1158 events. 599/1158 cut-off events. For 174774/174774 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6618 event pairs, 69 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 8735. Up to 991 conditions per place. [2024-06-28 02:51:12,183 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 254 selfloop transitions, 43 changer transitions 0/300 dead transitions. [2024-06-28 02:51:12,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 300 transitions, 3676 flow [2024-06-28 02:51:12,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:12,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:12,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 02:51:12,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 02:51:12,184 INFO L175 Difference]: Start difference. First operand has 325 places, 289 transitions, 3000 flow. Second operand 10 states and 121 transitions. [2024-06-28 02:51:12,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 300 transitions, 3676 flow [2024-06-28 02:51:12,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 300 transitions, 3528 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:12,633 INFO L231 Difference]: Finished difference. Result has 327 places, 290 transitions, 3004 flow [2024-06-28 02:51:12,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2852, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3004, PETRI_PLACES=327, PETRI_TRANSITIONS=290} [2024-06-28 02:51:12,633 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-28 02:51:12,633 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 290 transitions, 3004 flow [2024-06-28 02:51:12,634 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 02:51:12,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:12,634 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 02:51:12,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:51:12,634 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:12,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:12,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1976638458, now seen corresponding path program 9 times [2024-06-28 02:51:12,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:12,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346904621] [2024-06-28 02:51:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:12,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:13,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:13,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346904621] [2024-06-28 02:51:13,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346904621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:13,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:13,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:13,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022288208] [2024-06-28 02:51:13,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:13,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:13,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:13,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:13,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:13,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 290 transitions, 3004 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 02:51:13,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:13,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:13,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:14,189 INFO L124 PetriNetUnfolderBase]: 617/1191 cut-off events. [2024-06-28 02:51:14,189 INFO L125 PetriNetUnfolderBase]: For 188987/188987 co-relation queries the response was YES. [2024-06-28 02:51:14,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9435 conditions, 1191 events. 617/1191 cut-off events. For 188987/188987 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6871 event pairs, 69 based on Foata normal form. 1/1191 useless extension candidates. Maximal degree in co-relation 9286. Up to 709 conditions per place. [2024-06-28 02:51:14,201 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 172 selfloop transitions, 136 changer transitions 0/311 dead transitions. [2024-06-28 02:51:14,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 311 transitions, 4700 flow [2024-06-28 02:51:14,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:14,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 02:51:14,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-28 02:51:14,202 INFO L175 Difference]: Start difference. First operand has 327 places, 290 transitions, 3004 flow. Second operand 10 states and 138 transitions. [2024-06-28 02:51:14,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 311 transitions, 4700 flow [2024-06-28 02:51:14,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 311 transitions, 4558 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:14,682 INFO L231 Difference]: Finished difference. Result has 329 places, 298 transitions, 3338 flow [2024-06-28 02:51:14,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3338, PETRI_PLACES=329, PETRI_TRANSITIONS=298} [2024-06-28 02:51:14,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-28 02:51:14,683 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 298 transitions, 3338 flow [2024-06-28 02:51:14,683 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 02:51:14,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:14,683 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 02:51:14,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:51:14,683 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:14,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1976638737, now seen corresponding path program 7 times [2024-06-28 02:51:14,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:14,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513571548] [2024-06-28 02:51:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:14,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:15,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513571548] [2024-06-28 02:51:15,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513571548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:15,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:15,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:15,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416677854] [2024-06-28 02:51:15,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:15,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:15,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:15,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:15,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:15,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:15,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 298 transitions, 3338 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 02:51:15,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:15,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:15,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:16,229 INFO L124 PetriNetUnfolderBase]: 621/1197 cut-off events. [2024-06-28 02:51:16,229 INFO L125 PetriNetUnfolderBase]: For 197636/197636 co-relation queries the response was YES. [2024-06-28 02:51:16,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 1197 events. 621/1197 cut-off events. For 197636/197636 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6909 event pairs, 69 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 9495. Up to 866 conditions per place. [2024-06-28 02:51:16,242 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 96 changer transitions 0/309 dead transitions. [2024-06-28 02:51:16,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 309 transitions, 4006 flow [2024-06-28 02:51:16,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:16,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 02:51:16,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:51:16,243 INFO L175 Difference]: Start difference. First operand has 329 places, 298 transitions, 3338 flow. Second operand 10 states and 130 transitions. [2024-06-28 02:51:16,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 309 transitions, 4006 flow [2024-06-28 02:51:16,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 309 transitions, 3734 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:16,793 INFO L231 Difference]: Finished difference. Result has 333 places, 299 transitions, 3298 flow [2024-06-28 02:51:16,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3298, PETRI_PLACES=333, PETRI_TRANSITIONS=299} [2024-06-28 02:51:16,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-28 02:51:16,793 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 299 transitions, 3298 flow [2024-06-28 02:51:16,793 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 02:51:16,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:16,793 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 02:51:16,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:51:16,793 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:16,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:16,794 INFO L85 PathProgramCache]: Analyzing trace with hash 91485720, now seen corresponding path program 10 times [2024-06-28 02:51:16,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:16,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259985240] [2024-06-28 02:51:16,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:16,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:18,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:18,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259985240] [2024-06-28 02:51:18,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259985240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:18,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:18,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:18,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690757351] [2024-06-28 02:51:18,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:18,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:18,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:18,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:18,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:18,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:18,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 299 transitions, 3298 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 02:51:18,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:18,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:18,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:19,073 INFO L124 PetriNetUnfolderBase]: 629/1212 cut-off events. [2024-06-28 02:51:19,073 INFO L125 PetriNetUnfolderBase]: For 197914/197914 co-relation queries the response was YES. [2024-06-28 02:51:19,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9790 conditions, 1212 events. 629/1212 cut-off events. For 197914/197914 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7013 event pairs, 69 based on Foata normal form. 1/1212 useless extension candidates. Maximal degree in co-relation 9640. Up to 1018 conditions per place. [2024-06-28 02:51:19,083 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 257 selfloop transitions, 55 changer transitions 0/315 dead transitions. [2024-06-28 02:51:19,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 315 transitions, 4484 flow [2024-06-28 02:51:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 02:51:19,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-28 02:51:19,084 INFO L175 Difference]: Start difference. First operand has 333 places, 299 transitions, 3298 flow. Second operand 11 states and 137 transitions. [2024-06-28 02:51:19,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 315 transitions, 4484 flow [2024-06-28 02:51:19,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 315 transitions, 4262 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:19,589 INFO L231 Difference]: Finished difference. Result has 336 places, 303 transitions, 3295 flow [2024-06-28 02:51:19,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3295, PETRI_PLACES=336, PETRI_TRANSITIONS=303} [2024-06-28 02:51:19,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-28 02:51:19,590 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 303 transitions, 3295 flow [2024-06-28 02:51:19,590 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 02:51:19,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:19,590 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 02:51:19,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:51:19,590 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:19,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash 91694970, now seen corresponding path program 11 times [2024-06-28 02:51:19,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:19,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093088863] [2024-06-28 02:51:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:19,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:20,977 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 02:51:20,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:20,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093088863] [2024-06-28 02:51:20,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093088863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:20,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:20,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:20,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148716099] [2024-06-28 02:51:20,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:20,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:20,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:20,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:20,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:21,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:21,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 303 transitions, 3295 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 02:51:21,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:21,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:21,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:21,570 INFO L124 PetriNetUnfolderBase]: 627/1208 cut-off events. [2024-06-28 02:51:21,570 INFO L125 PetriNetUnfolderBase]: For 194871/194871 co-relation queries the response was YES. [2024-06-28 02:51:21,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9542 conditions, 1208 events. 627/1208 cut-off events. For 194871/194871 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6989 event pairs, 72 based on Foata normal form. 1/1208 useless extension candidates. Maximal degree in co-relation 9391. Up to 994 conditions per place. [2024-06-28 02:51:21,583 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 252 selfloop transitions, 59 changer transitions 0/314 dead transitions. [2024-06-28 02:51:21,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 314 transitions, 4159 flow [2024-06-28 02:51:21,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:51:21,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:51:21,584 INFO L175 Difference]: Start difference. First operand has 336 places, 303 transitions, 3295 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:51:21,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 314 transitions, 4159 flow [2024-06-28 02:51:22,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 314 transitions, 3973 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:22,155 INFO L231 Difference]: Finished difference. Result has 339 places, 303 transitions, 3232 flow [2024-06-28 02:51:22,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3109, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3232, PETRI_PLACES=339, PETRI_TRANSITIONS=303} [2024-06-28 02:51:22,156 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-28 02:51:22,156 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 303 transitions, 3232 flow [2024-06-28 02:51:22,156 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 02:51:22,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:22,156 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 02:51:22,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:51:22,156 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:22,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash 91695249, now seen corresponding path program 8 times [2024-06-28 02:51:22,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:22,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623469149] [2024-06-28 02:51:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:22,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:23,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:23,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623469149] [2024-06-28 02:51:23,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623469149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:23,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:23,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:23,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569958558] [2024-06-28 02:51:23,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:23,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:23,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:23,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:23,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:23,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:23,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 303 transitions, 3232 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 02:51:23,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:23,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:23,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:24,098 INFO L124 PetriNetUnfolderBase]: 643/1245 cut-off events. [2024-06-28 02:51:24,098 INFO L125 PetriNetUnfolderBase]: For 250221/250221 co-relation queries the response was YES. [2024-06-28 02:51:24,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9764 conditions, 1245 events. 643/1245 cut-off events. For 250221/250221 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7251 event pairs, 73 based on Foata normal form. 10/1254 useless extension candidates. Maximal degree in co-relation 9612. Up to 1033 conditions per place. [2024-06-28 02:51:24,111 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 265 selfloop transitions, 46 changer transitions 4/318 dead transitions. [2024-06-28 02:51:24,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 318 transitions, 3982 flow [2024-06-28 02:51:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:51:24,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:51:24,112 INFO L175 Difference]: Start difference. First operand has 339 places, 303 transitions, 3232 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:51:24,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 318 transitions, 3982 flow [2024-06-28 02:51:24,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 318 transitions, 3862 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:51:24,693 INFO L231 Difference]: Finished difference. Result has 341 places, 303 transitions, 3236 flow [2024-06-28 02:51:24,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3112, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3236, PETRI_PLACES=341, PETRI_TRANSITIONS=303} [2024-06-28 02:51:24,694 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-28 02:51:24,694 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 303 transitions, 3236 flow [2024-06-28 02:51:24,694 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 02:51:24,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:24,694 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 02:51:24,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:51:24,694 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:24,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:24,695 INFO L85 PathProgramCache]: Analyzing trace with hash 292776780, now seen corresponding path program 12 times [2024-06-28 02:51:24,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:24,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790117522] [2024-06-28 02:51:24,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:24,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:26,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:26,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790117522] [2024-06-28 02:51:26,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790117522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:26,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:26,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:26,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230101719] [2024-06-28 02:51:26,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:26,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:26,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:26,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:26,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:26,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:26,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 303 transitions, 3236 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 02:51:26,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:26,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:26,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:26,636 INFO L124 PetriNetUnfolderBase]: 635/1232 cut-off events. [2024-06-28 02:51:26,636 INFO L125 PetriNetUnfolderBase]: For 196296/196296 co-relation queries the response was YES. [2024-06-28 02:51:26,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9588 conditions, 1232 events. 635/1232 cut-off events. For 196296/196296 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7160 event pairs, 73 based on Foata normal form. 1/1232 useless extension candidates. Maximal degree in co-relation 9435. Up to 982 conditions per place. [2024-06-28 02:51:26,650 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 233 selfloop transitions, 78 changer transitions 0/314 dead transitions. [2024-06-28 02:51:26,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 314 transitions, 4104 flow [2024-06-28 02:51:26,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:51:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:51:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 02:51:26,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-28 02:51:26,651 INFO L175 Difference]: Start difference. First operand has 341 places, 303 transitions, 3236 flow. Second operand 12 states and 149 transitions. [2024-06-28 02:51:26,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 314 transitions, 4104 flow [2024-06-28 02:51:27,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 314 transitions, 3918 flow, removed 30 selfloop flow, removed 12 redundant places. [2024-06-28 02:51:27,224 INFO L231 Difference]: Finished difference. Result has 341 places, 303 transitions, 3211 flow [2024-06-28 02:51:27,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3050, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3211, PETRI_PLACES=341, PETRI_TRANSITIONS=303} [2024-06-28 02:51:27,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-28 02:51:27,224 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 303 transitions, 3211 flow [2024-06-28 02:51:27,225 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 02:51:27,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:27,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:27,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:51:27,225 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:27,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:27,226 INFO L85 PathProgramCache]: Analyzing trace with hash 91687530, now seen corresponding path program 13 times [2024-06-28 02:51:27,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:27,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293338214] [2024-06-28 02:51:27,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:27,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:28,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:28,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293338214] [2024-06-28 02:51:28,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293338214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:28,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:28,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:28,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003657271] [2024-06-28 02:51:28,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:28,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:28,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:28,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:28,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:28,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:28,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 303 transitions, 3211 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 02:51:28,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:28,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:28,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:29,194 INFO L124 PetriNetUnfolderBase]: 633/1229 cut-off events. [2024-06-28 02:51:29,194 INFO L125 PetriNetUnfolderBase]: For 192802/192802 co-relation queries the response was YES. [2024-06-28 02:51:29,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9442 conditions, 1229 events. 633/1229 cut-off events. For 192802/192802 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7172 event pairs, 75 based on Foata normal form. 1/1229 useless extension candidates. Maximal degree in co-relation 9288. Up to 1037 conditions per place. [2024-06-28 02:51:29,208 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 256 selfloop transitions, 54 changer transitions 0/313 dead transitions. [2024-06-28 02:51:29,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 313 transitions, 3853 flow [2024-06-28 02:51:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:51:29,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:51:29,209 INFO L175 Difference]: Start difference. First operand has 341 places, 303 transitions, 3211 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:51:29,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 313 transitions, 3853 flow [2024-06-28 02:51:29,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 313 transitions, 3652 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-28 02:51:29,853 INFO L231 Difference]: Finished difference. Result has 341 places, 303 transitions, 3123 flow [2024-06-28 02:51:29,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3010, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3123, PETRI_PLACES=341, PETRI_TRANSITIONS=303} [2024-06-28 02:51:29,853 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-28 02:51:29,853 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 303 transitions, 3123 flow [2024-06-28 02:51:29,853 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 02:51:29,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:29,853 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 02:51:29,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:51:29,854 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:29,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:29,854 INFO L85 PathProgramCache]: Analyzing trace with hash 843420660, now seen corresponding path program 14 times [2024-06-28 02:51:29,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:29,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397716762] [2024-06-28 02:51:29,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:29,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:31,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:31,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397716762] [2024-06-28 02:51:31,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397716762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:31,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:31,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:31,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442053697] [2024-06-28 02:51:31,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:31,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:31,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:31,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:31,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:31,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:31,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 303 transitions, 3123 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 02:51:31,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:31,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:31,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:31,918 INFO L124 PetriNetUnfolderBase]: 631/1226 cut-off events. [2024-06-28 02:51:31,919 INFO L125 PetriNetUnfolderBase]: For 189224/189224 co-relation queries the response was YES. [2024-06-28 02:51:31,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9243 conditions, 1226 events. 631/1226 cut-off events. For 189224/189224 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7153 event pairs, 75 based on Foata normal form. 1/1226 useless extension candidates. Maximal degree in co-relation 9088. Up to 897 conditions per place. [2024-06-28 02:51:31,932 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 209 selfloop transitions, 101 changer transitions 0/313 dead transitions. [2024-06-28 02:51:31,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 313 transitions, 3765 flow [2024-06-28 02:51:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 02:51:31,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 02:51:31,933 INFO L175 Difference]: Start difference. First operand has 341 places, 303 transitions, 3123 flow. Second operand 11 states and 138 transitions. [2024-06-28 02:51:31,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 313 transitions, 3765 flow [2024-06-28 02:51:32,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 313 transitions, 3596 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-28 02:51:32,440 INFO L231 Difference]: Finished difference. Result has 341 places, 303 transitions, 3161 flow [2024-06-28 02:51:32,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3161, PETRI_PLACES=341, PETRI_TRANSITIONS=303} [2024-06-28 02:51:32,440 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-28 02:51:32,440 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 303 transitions, 3161 flow [2024-06-28 02:51:32,440 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 02:51:32,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:32,440 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 02:51:32,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:51:32,441 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:32,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash -48477557, now seen corresponding path program 9 times [2024-06-28 02:51:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:32,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295922776] [2024-06-28 02:51:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:33,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:33,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295922776] [2024-06-28 02:51:33,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295922776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:33,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:33,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:33,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832383370] [2024-06-28 02:51:33,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:33,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:33,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:33,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:33,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:33,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:33,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 303 transitions, 3161 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 02:51:33,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:33,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:33,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:34,263 INFO L124 PetriNetUnfolderBase]: 642/1247 cut-off events. [2024-06-28 02:51:34,263 INFO L125 PetriNetUnfolderBase]: For 213192/213192 co-relation queries the response was YES. [2024-06-28 02:51:34,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9766 conditions, 1247 events. 642/1247 cut-off events. For 213192/213192 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7295 event pairs, 74 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 9610. Up to 947 conditions per place. [2024-06-28 02:51:34,273 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 83 changer transitions 0/318 dead transitions. [2024-06-28 02:51:34,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 318 transitions, 4123 flow [2024-06-28 02:51:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:34,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 02:51:34,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 02:51:34,274 INFO L175 Difference]: Start difference. First operand has 341 places, 303 transitions, 3161 flow. Second operand 11 states and 139 transitions. [2024-06-28 02:51:34,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 318 transitions, 4123 flow [2024-06-28 02:51:34,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 318 transitions, 3912 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:51:34,840 INFO L231 Difference]: Finished difference. Result has 342 places, 305 transitions, 3198 flow [2024-06-28 02:51:34,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2950, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3198, PETRI_PLACES=342, PETRI_TRANSITIONS=305} [2024-06-28 02:51:34,840 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-28 02:51:34,840 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 305 transitions, 3198 flow [2024-06-28 02:51:34,841 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 02:51:34,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:34,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:34,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:51:34,841 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:34,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:34,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1732600565, now seen corresponding path program 10 times [2024-06-28 02:51:34,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:34,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120993665] [2024-06-28 02:51:34,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:34,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:36,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:36,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120993665] [2024-06-28 02:51:36,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120993665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:36,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:36,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:36,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073502172] [2024-06-28 02:51:36,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:36,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:36,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:36,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:36,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:36,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 305 transitions, 3198 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 02:51:36,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:36,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:36,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:36,970 INFO L124 PetriNetUnfolderBase]: 646/1255 cut-off events. [2024-06-28 02:51:36,970 INFO L125 PetriNetUnfolderBase]: For 217472/217472 co-relation queries the response was YES. [2024-06-28 02:51:36,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9865 conditions, 1255 events. 646/1255 cut-off events. For 217472/217472 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7385 event pairs, 78 based on Foata normal form. 2/1256 useless extension candidates. Maximal degree in co-relation 9708. Up to 1063 conditions per place. [2024-06-28 02:51:36,983 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 260 selfloop transitions, 54 changer transitions 0/317 dead transitions. [2024-06-28 02:51:36,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 317 transitions, 3890 flow [2024-06-28 02:51:36,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:36,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:51:36,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:51:36,984 INFO L175 Difference]: Start difference. First operand has 342 places, 305 transitions, 3198 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:51:36,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 317 transitions, 3890 flow [2024-06-28 02:51:37,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 317 transitions, 3739 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 02:51:37,590 INFO L231 Difference]: Finished difference. Result has 346 places, 306 transitions, 3201 flow [2024-06-28 02:51:37,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3201, PETRI_PLACES=346, PETRI_TRANSITIONS=306} [2024-06-28 02:51:37,590 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-28 02:51:37,590 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 306 transitions, 3201 flow [2024-06-28 02:51:37,590 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 02:51:37,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:37,591 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 02:51:37,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 02:51:37,591 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:37,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:37,591 INFO L85 PathProgramCache]: Analyzing trace with hash -56105696, now seen corresponding path program 15 times [2024-06-28 02:51:37,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:37,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979318961] [2024-06-28 02:51:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:37,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:39,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:39,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:39,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979318961] [2024-06-28 02:51:39,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979318961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:39,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:39,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:39,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118109034] [2024-06-28 02:51:39,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:39,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:39,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:39,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:39,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:39,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:39,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 306 transitions, 3201 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 02:51:39,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:39,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:39,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:39,676 INFO L124 PetriNetUnfolderBase]: 649/1260 cut-off events. [2024-06-28 02:51:39,676 INFO L125 PetriNetUnfolderBase]: For 213884/213884 co-relation queries the response was YES. [2024-06-28 02:51:39,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9916 conditions, 1260 events. 649/1260 cut-off events. For 213884/213884 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7397 event pairs, 78 based on Foata normal form. 1/1260 useless extension candidates. Maximal degree in co-relation 9759. Up to 778 conditions per place. [2024-06-28 02:51:39,690 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 166 selfloop transitions, 152 changer transitions 0/321 dead transitions. [2024-06-28 02:51:39,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 321 transitions, 4613 flow [2024-06-28 02:51:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:39,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 02:51:39,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-28 02:51:39,691 INFO L175 Difference]: Start difference. First operand has 346 places, 306 transitions, 3201 flow. Second operand 11 states and 144 transitions. [2024-06-28 02:51:39,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 321 transitions, 4613 flow [2024-06-28 02:51:40,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 321 transitions, 4469 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:51:40,299 INFO L231 Difference]: Finished difference. Result has 348 places, 308 transitions, 3418 flow [2024-06-28 02:51:40,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3057, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3418, PETRI_PLACES=348, PETRI_TRANSITIONS=308} [2024-06-28 02:51:40,299 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-28 02:51:40,299 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 308 transitions, 3418 flow [2024-06-28 02:51:40,299 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 02:51:40,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:40,299 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 02:51:40,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 02:51:40,299 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:40,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:40,300 INFO L85 PathProgramCache]: Analyzing trace with hash -55903886, now seen corresponding path program 16 times [2024-06-28 02:51:40,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:40,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506883700] [2024-06-28 02:51:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:40,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:41,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:41,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506883700] [2024-06-28 02:51:41,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506883700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:41,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:41,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:41,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982434063] [2024-06-28 02:51:41,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:41,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:41,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:41,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:41,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:42,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:42,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 308 transitions, 3418 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 02:51:42,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:42,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:42,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:42,454 INFO L124 PetriNetUnfolderBase]: 647/1257 cut-off events. [2024-06-28 02:51:42,454 INFO L125 PetriNetUnfolderBase]: For 210577/210577 co-relation queries the response was YES. [2024-06-28 02:51:42,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9937 conditions, 1257 events. 647/1257 cut-off events. For 210577/210577 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7401 event pairs, 76 based on Foata normal form. 1/1257 useless extension candidates. Maximal degree in co-relation 9779. Up to 928 conditions per place. [2024-06-28 02:51:42,469 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 213 selfloop transitions, 102 changer transitions 0/318 dead transitions. [2024-06-28 02:51:42,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 318 transitions, 4070 flow [2024-06-28 02:51:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 02:51:42,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-28 02:51:42,470 INFO L175 Difference]: Start difference. First operand has 348 places, 308 transitions, 3418 flow. Second operand 11 states and 137 transitions. [2024-06-28 02:51:42,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 318 transitions, 4070 flow [2024-06-28 02:51:43,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 318 transitions, 3724 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:51:43,122 INFO L231 Difference]: Finished difference. Result has 350 places, 308 transitions, 3281 flow [2024-06-28 02:51:43,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3072, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3281, PETRI_PLACES=350, PETRI_TRANSITIONS=308} [2024-06-28 02:51:43,122 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-28 02:51:43,122 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 308 transitions, 3281 flow [2024-06-28 02:51:43,122 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 02:51:43,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:43,122 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 02:51:43,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 02:51:43,123 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:43,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:43,123 INFO L85 PathProgramCache]: Analyzing trace with hash 220828257, now seen corresponding path program 11 times [2024-06-28 02:51:43,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:43,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400363442] [2024-06-28 02:51:43,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:43,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:44,448 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 02:51:44,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:44,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400363442] [2024-06-28 02:51:44,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400363442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:44,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:44,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:44,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608912649] [2024-06-28 02:51:44,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:44,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:44,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:44,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:44,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:44,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:44,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 308 transitions, 3281 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 02:51:44,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:44,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:44,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:45,056 INFO L124 PetriNetUnfolderBase]: 651/1265 cut-off events. [2024-06-28 02:51:45,056 INFO L125 PetriNetUnfolderBase]: For 221055/221055 co-relation queries the response was YES. [2024-06-28 02:51:45,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9915 conditions, 1265 events. 651/1265 cut-off events. For 221055/221055 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7429 event pairs, 78 based on Foata normal form. 2/1266 useless extension candidates. Maximal degree in co-relation 9756. Up to 1058 conditions per place. [2024-06-28 02:51:45,071 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 256 selfloop transitions, 61 changer transitions 0/320 dead transitions. [2024-06-28 02:51:45,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 320 transitions, 3981 flow [2024-06-28 02:51:45,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:45,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:51:45,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:51:45,072 INFO L175 Difference]: Start difference. First operand has 350 places, 308 transitions, 3281 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:51:45,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 320 transitions, 3981 flow [2024-06-28 02:51:45,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 320 transitions, 3738 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:51:45,713 INFO L231 Difference]: Finished difference. Result has 352 places, 309 transitions, 3208 flow [2024-06-28 02:51:45,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3208, PETRI_PLACES=352, PETRI_TRANSITIONS=309} [2024-06-28 02:51:45,713 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-28 02:51:45,713 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 309 transitions, 3208 flow [2024-06-28 02:51:45,713 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 02:51:45,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:45,714 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 02:51:45,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 02:51:45,714 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:45,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:45,714 INFO L85 PathProgramCache]: Analyzing trace with hash 220837557, now seen corresponding path program 12 times [2024-06-28 02:51:45,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:45,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431431077] [2024-06-28 02:51:45,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:45,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:47,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:47,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431431077] [2024-06-28 02:51:47,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431431077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:47,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:47,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:47,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140552734] [2024-06-28 02:51:47,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:47,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:47,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:47,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:47,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:47,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:47,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 309 transitions, 3208 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 02:51:47,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:47,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:47,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:47,598 INFO L124 PetriNetUnfolderBase]: 662/1285 cut-off events. [2024-06-28 02:51:47,598 INFO L125 PetriNetUnfolderBase]: For 240075/240075 co-relation queries the response was YES. [2024-06-28 02:51:47,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10324 conditions, 1285 events. 662/1285 cut-off events. For 240075/240075 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7616 event pairs, 82 based on Foata normal form. 2/1286 useless extension candidates. Maximal degree in co-relation 10164. Up to 1000 conditions per place. [2024-06-28 02:51:47,612 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 68 changer transitions 2/326 dead transitions. [2024-06-28 02:51:47,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 326 transitions, 4254 flow [2024-06-28 02:51:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:47,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 02:51:47,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-28 02:51:47,613 INFO L175 Difference]: Start difference. First operand has 352 places, 309 transitions, 3208 flow. Second operand 11 states and 141 transitions. [2024-06-28 02:51:47,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 326 transitions, 4254 flow [2024-06-28 02:51:48,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 326 transitions, 4094 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 02:51:48,335 INFO L231 Difference]: Finished difference. Result has 354 places, 311 transitions, 3278 flow [2024-06-28 02:51:48,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3278, PETRI_PLACES=354, PETRI_TRANSITIONS=311} [2024-06-28 02:51:48,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-28 02:51:48,335 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 311 transitions, 3278 flow [2024-06-28 02:51:48,336 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 02:51:48,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:48,336 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 02:51:48,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 02:51:48,336 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:48,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:48,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1739750684, now seen corresponding path program 17 times [2024-06-28 02:51:48,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:48,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970772609] [2024-06-28 02:51:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:48,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:49,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:49,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970772609] [2024-06-28 02:51:49,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970772609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:49,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:49,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:49,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721232806] [2024-06-28 02:51:49,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:49,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:49,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:49,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:49,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:49,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:49,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 311 transitions, 3278 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 02:51:49,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:49,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:49,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:50,282 INFO L124 PetriNetUnfolderBase]: 660/1282 cut-off events. [2024-06-28 02:51:50,282 INFO L125 PetriNetUnfolderBase]: For 229047/229047 co-relation queries the response was YES. [2024-06-28 02:51:50,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10165 conditions, 1282 events. 660/1282 cut-off events. For 229047/229047 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7578 event pairs, 84 based on Foata normal form. 1/1282 useless extension candidates. Maximal degree in co-relation 10004. Up to 1045 conditions per place. [2024-06-28 02:51:50,297 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 66 changer transitions 0/322 dead transitions. [2024-06-28 02:51:50,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 322 transitions, 4180 flow [2024-06-28 02:51:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 02:51:50,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 02:51:50,298 INFO L175 Difference]: Start difference. First operand has 354 places, 311 transitions, 3278 flow. Second operand 11 states and 140 transitions. [2024-06-28 02:51:50,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 322 transitions, 4180 flow [2024-06-28 02:51:50,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 322 transitions, 4013 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 02:51:50,985 INFO L231 Difference]: Finished difference. Result has 358 places, 311 transitions, 3248 flow [2024-06-28 02:51:50,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3248, PETRI_PLACES=358, PETRI_TRANSITIONS=311} [2024-06-28 02:51:50,986 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 02:51:50,986 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 311 transitions, 3248 flow [2024-06-28 02:51:50,986 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 02:51:50,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:50,986 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 02:51:50,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 02:51:50,986 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:50,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:50,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1505519405, now seen corresponding path program 13 times [2024-06-28 02:51:50,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:50,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306690169] [2024-06-28 02:51:50,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:50,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:52,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:52,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:52,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306690169] [2024-06-28 02:51:52,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306690169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:52,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:52,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:52,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452104656] [2024-06-28 02:51:52,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:52,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:52,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:52,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 311 transitions, 3248 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 02:51:52,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:52,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:52,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:53,295 INFO L124 PetriNetUnfolderBase]: 657/1277 cut-off events. [2024-06-28 02:51:53,295 INFO L125 PetriNetUnfolderBase]: For 224091/224091 co-relation queries the response was YES. [2024-06-28 02:51:53,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9871 conditions, 1277 events. 657/1277 cut-off events. For 224091/224091 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7568 event pairs, 83 based on Foata normal form. 2/1278 useless extension candidates. Maximal degree in co-relation 9708. Up to 981 conditions per place. [2024-06-28 02:51:53,309 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 234 selfloop transitions, 85 changer transitions 0/322 dead transitions. [2024-06-28 02:51:53,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 322 transitions, 3910 flow [2024-06-28 02:51:53,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:51:53,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:51:53,310 INFO L175 Difference]: Start difference. First operand has 358 places, 311 transitions, 3248 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:51:53,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 322 transitions, 3910 flow [2024-06-28 02:51:53,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 322 transitions, 3693 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-28 02:51:53,962 INFO L231 Difference]: Finished difference. Result has 358 places, 311 transitions, 3205 flow [2024-06-28 02:51:53,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3205, PETRI_PLACES=358, PETRI_TRANSITIONS=311} [2024-06-28 02:51:53,963 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 02:51:53,963 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 311 transitions, 3205 flow [2024-06-28 02:51:53,963 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 02:51:53,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:53,963 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 02:51:53,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 02:51:53,964 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:53,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:53,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1938212894, now seen corresponding path program 18 times [2024-06-28 02:51:53,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:53,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116239330] [2024-06-28 02:51:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:55,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:55,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116239330] [2024-06-28 02:51:55,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116239330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:55,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:55,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:55,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134239939] [2024-06-28 02:51:55,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:55,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:55,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:55,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:55,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:55,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:55,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 311 transitions, 3205 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 02:51:55,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:55,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:55,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:56,176 INFO L124 PetriNetUnfolderBase]: 660/1283 cut-off events. [2024-06-28 02:51:56,176 INFO L125 PetriNetUnfolderBase]: For 219820/219820 co-relation queries the response was YES. [2024-06-28 02:51:56,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9908 conditions, 1283 events. 660/1283 cut-off events. For 219820/219820 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7606 event pairs, 80 based on Foata normal form. 1/1283 useless extension candidates. Maximal degree in co-relation 9744. Up to 1076 conditions per place. [2024-06-28 02:51:56,190 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 259 selfloop transitions, 61 changer transitions 0/323 dead transitions. [2024-06-28 02:51:56,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 323 transitions, 3915 flow [2024-06-28 02:51:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:51:56,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:51:56,191 INFO L175 Difference]: Start difference. First operand has 358 places, 311 transitions, 3205 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:51:56,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 323 transitions, 3915 flow [2024-06-28 02:51:56,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 323 transitions, 3728 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 02:51:56,801 INFO L231 Difference]: Finished difference. Result has 358 places, 313 transitions, 3197 flow [2024-06-28 02:51:56,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3018, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3197, PETRI_PLACES=358, PETRI_TRANSITIONS=313} [2024-06-28 02:51:56,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 02:51:56,801 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 313 transitions, 3197 flow [2024-06-28 02:51:56,801 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 02:51:56,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:56,801 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 02:51:56,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 02:51:56,802 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:56,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:56,802 INFO L85 PathProgramCache]: Analyzing trace with hash 285634659, now seen corresponding path program 14 times [2024-06-28 02:51:56,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:56,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270952472] [2024-06-28 02:51:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:56,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:58,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:58,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270952472] [2024-06-28 02:51:58,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270952472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:58,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:58,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642698480] [2024-06-28 02:51:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:58,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:58,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:58,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:58,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:58,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:51:58,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 313 transitions, 3197 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 02:51:58,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:58,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:51:58,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:58,970 INFO L124 PetriNetUnfolderBase]: 657/1278 cut-off events. [2024-06-28 02:51:58,970 INFO L125 PetriNetUnfolderBase]: For 215768/215768 co-relation queries the response was YES. [2024-06-28 02:51:58,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9588 conditions, 1278 events. 657/1278 cut-off events. For 215768/215768 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7565 event pairs, 79 based on Foata normal form. 2/1279 useless extension candidates. Maximal degree in co-relation 9423. Up to 1086 conditions per place. [2024-06-28 02:51:58,984 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 269 selfloop transitions, 52 changer transitions 0/324 dead transitions. [2024-06-28 02:51:58,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 324 transitions, 3863 flow [2024-06-28 02:51:58,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:58,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:51:58,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:51:58,986 INFO L175 Difference]: Start difference. First operand has 358 places, 313 transitions, 3197 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:51:58,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 324 transitions, 3863 flow [2024-06-28 02:51:59,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 324 transitions, 3695 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:59,532 INFO L231 Difference]: Finished difference. Result has 361 places, 313 transitions, 3137 flow [2024-06-28 02:51:59,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3137, PETRI_PLACES=361, PETRI_TRANSITIONS=313} [2024-06-28 02:51:59,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-28 02:51:59,533 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 313 transitions, 3137 flow [2024-06-28 02:51:59,533 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 02:51:59,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:59,533 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 02:51:59,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 02:51:59,534 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:59,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:59,534 INFO L85 PathProgramCache]: Analyzing trace with hash 285626940, now seen corresponding path program 19 times [2024-06-28 02:51:59,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:59,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369389190] [2024-06-28 02:51:59,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:59,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:00,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:00,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369389190] [2024-06-28 02:52:00,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369389190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:00,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:00,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:00,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985989393] [2024-06-28 02:52:00,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:00,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:00,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:00,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:00,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:01,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:01,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 313 transitions, 3137 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 02:52:01,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:01,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:01,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:01,594 INFO L124 PetriNetUnfolderBase]: 655/1275 cut-off events. [2024-06-28 02:52:01,594 INFO L125 PetriNetUnfolderBase]: For 202991/202991 co-relation queries the response was YES. [2024-06-28 02:52:01,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9381 conditions, 1275 events. 655/1275 cut-off events. For 202991/202991 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7553 event pairs, 79 based on Foata normal form. 1/1275 useless extension candidates. Maximal degree in co-relation 9215. Up to 1027 conditions per place. [2024-06-28 02:52:01,606 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 244 selfloop transitions, 76 changer transitions 0/323 dead transitions. [2024-06-28 02:52:01,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 323 transitions, 3799 flow [2024-06-28 02:52:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:52:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:52:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 02:52:01,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-06-28 02:52:01,607 INFO L175 Difference]: Start difference. First operand has 361 places, 313 transitions, 3137 flow. Second operand 12 states and 151 transitions. [2024-06-28 02:52:01,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 323 transitions, 3799 flow [2024-06-28 02:52:02,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 323 transitions, 3631 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 02:52:02,219 INFO L231 Difference]: Finished difference. Result has 363 places, 313 transitions, 3126 flow [2024-06-28 02:52:02,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2969, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3126, PETRI_PLACES=363, PETRI_TRANSITIONS=313} [2024-06-28 02:52:02,220 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-28 02:52:02,220 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 313 transitions, 3126 flow [2024-06-28 02:52:02,220 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 02:52:02,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:02,220 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 02:52:02,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 02:52:02,220 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:02,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1969488618, now seen corresponding path program 20 times [2024-06-28 02:52:02,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:02,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346454531] [2024-06-28 02:52:02,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:02,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:03,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:03,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346454531] [2024-06-28 02:52:03,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346454531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:03,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:03,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:03,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596737868] [2024-06-28 02:52:03,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:03,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:03,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:03,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:03,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:03,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:03,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 313 transitions, 3126 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 02:52:03,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:03,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:03,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:03,760 INFO L124 PetriNetUnfolderBase]: 653/1272 cut-off events. [2024-06-28 02:52:03,761 INFO L125 PetriNetUnfolderBase]: For 197943/197943 co-relation queries the response was YES. [2024-06-28 02:52:03,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9217 conditions, 1272 events. 653/1272 cut-off events. For 197943/197943 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7547 event pairs, 79 based on Foata normal form. 1/1272 useless extension candidates. Maximal degree in co-relation 9050. Up to 793 conditions per place. [2024-06-28 02:52:03,775 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 174 selfloop transitions, 146 changer transitions 0/323 dead transitions. [2024-06-28 02:52:03,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 323 transitions, 4038 flow [2024-06-28 02:52:03,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 02:52:03,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-28 02:52:03,776 INFO L175 Difference]: Start difference. First operand has 363 places, 313 transitions, 3126 flow. Second operand 10 states and 133 transitions. [2024-06-28 02:52:03,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 323 transitions, 4038 flow [2024-06-28 02:52:04,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 323 transitions, 3836 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-28 02:52:04,389 INFO L231 Difference]: Finished difference. Result has 362 places, 313 transitions, 3224 flow [2024-06-28 02:52:04,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3224, PETRI_PLACES=362, PETRI_TRANSITIONS=313} [2024-06-28 02:52:04,389 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-28 02:52:04,390 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 313 transitions, 3224 flow [2024-06-28 02:52:04,390 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 02:52:04,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:04,390 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 02:52:04,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 02:52:04,390 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:04,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:04,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1745157291, now seen corresponding path program 15 times [2024-06-28 02:52:04,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:04,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75754153] [2024-06-28 02:52:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:04,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:06,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:06,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75754153] [2024-06-28 02:52:06,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75754153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:06,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:06,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:06,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923688653] [2024-06-28 02:52:06,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:06,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:06,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:06,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:06,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:06,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:06,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 313 transitions, 3224 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 02:52:06,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:06,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:06,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:06,725 INFO L124 PetriNetUnfolderBase]: 657/1279 cut-off events. [2024-06-28 02:52:06,725 INFO L125 PetriNetUnfolderBase]: For 209978/209978 co-relation queries the response was YES. [2024-06-28 02:52:06,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9454 conditions, 1279 events. 657/1279 cut-off events. For 209978/209978 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7614 event pairs, 84 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 9286. Up to 1122 conditions per place. [2024-06-28 02:52:06,739 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 301 selfloop transitions, 25 changer transitions 0/329 dead transitions. [2024-06-28 02:52:06,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 329 transitions, 4206 flow [2024-06-28 02:52:06,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:52:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:52:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 02:52:06,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-28 02:52:06,740 INFO L175 Difference]: Start difference. First operand has 362 places, 313 transitions, 3224 flow. Second operand 12 states and 139 transitions. [2024-06-28 02:52:06,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 329 transitions, 4206 flow [2024-06-28 02:52:07,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 329 transitions, 3920 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:07,373 INFO L231 Difference]: Finished difference. Result has 365 places, 314 transitions, 3040 flow [2024-06-28 02:52:07,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2940, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3040, PETRI_PLACES=365, PETRI_TRANSITIONS=314} [2024-06-28 02:52:07,373 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-28 02:52:07,373 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 314 transitions, 3040 flow [2024-06-28 02:52:07,373 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 02:52:07,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:07,374 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 02:52:07,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 02:52:07,374 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:07,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:07,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2069907990, now seen corresponding path program 21 times [2024-06-28 02:52:07,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:07,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572973459] [2024-06-28 02:52:07,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:07,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:08,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:08,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572973459] [2024-06-28 02:52:08,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572973459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:08,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:08,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:08,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135001977] [2024-06-28 02:52:08,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:08,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:08,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:08,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:08,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:08,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:08,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 314 transitions, 3040 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 02:52:08,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:08,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:08,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:09,380 INFO L124 PetriNetUnfolderBase]: 668/1301 cut-off events. [2024-06-28 02:52:09,380 INFO L125 PetriNetUnfolderBase]: For 210519/210519 co-relation queries the response was YES. [2024-06-28 02:52:09,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9514 conditions, 1301 events. 668/1301 cut-off events. For 210519/210519 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7769 event pairs, 88 based on Foata normal form. 1/1301 useless extension candidates. Maximal degree in co-relation 9346. Up to 1179 conditions per place. [2024-06-28 02:52:09,394 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 302 selfloop transitions, 26 changer transitions 0/331 dead transitions. [2024-06-28 02:52:09,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 331 transitions, 4098 flow [2024-06-28 02:52:09,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:09,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:09,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 02:52:09,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 02:52:09,395 INFO L175 Difference]: Start difference. First operand has 365 places, 314 transitions, 3040 flow. Second operand 11 states and 129 transitions. [2024-06-28 02:52:09,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 331 transitions, 4098 flow [2024-06-28 02:52:10,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 331 transitions, 3879 flow, removed 27 selfloop flow, removed 12 redundant places. [2024-06-28 02:52:10,052 INFO L231 Difference]: Finished difference. Result has 365 places, 320 transitions, 3013 flow [2024-06-28 02:52:10,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2824, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3013, PETRI_PLACES=365, PETRI_TRANSITIONS=320} [2024-06-28 02:52:10,053 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-28 02:52:10,053 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 320 transitions, 3013 flow [2024-06-28 02:52:10,053 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 02:52:10,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:10,053 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 02:52:10,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 02:52:10,053 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:10,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash 199414772, now seen corresponding path program 22 times [2024-06-28 02:52:10,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:10,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593629465] [2024-06-28 02:52:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:10,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:11,431 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 02:52:11,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:11,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593629465] [2024-06-28 02:52:11,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593629465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:11,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:11,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:11,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763842587] [2024-06-28 02:52:11,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:11,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:11,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:11,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:11,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 320 transitions, 3013 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 02:52:11,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:11,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:11,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:12,004 INFO L124 PetriNetUnfolderBase]: 644/1252 cut-off events. [2024-06-28 02:52:12,004 INFO L125 PetriNetUnfolderBase]: For 142318/142318 co-relation queries the response was YES. [2024-06-28 02:52:12,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7789 conditions, 1252 events. 644/1252 cut-off events. For 142318/142318 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7451 event pairs, 74 based on Foata normal form. 1/1252 useless extension candidates. Maximal degree in co-relation 7622. Up to 1140 conditions per place. [2024-06-28 02:52:12,017 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 306 selfloop transitions, 22 changer transitions 0/331 dead transitions. [2024-06-28 02:52:12,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 331 transitions, 3947 flow [2024-06-28 02:52:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:12,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:12,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:52:12,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 02:52:12,018 INFO L175 Difference]: Start difference. First operand has 365 places, 320 transitions, 3013 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:52:12,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 331 transitions, 3947 flow [2024-06-28 02:52:12,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 331 transitions, 3881 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 02:52:12,540 INFO L231 Difference]: Finished difference. Result has 370 places, 320 transitions, 2996 flow [2024-06-28 02:52:12,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2996, PETRI_PLACES=370, PETRI_TRANSITIONS=320} [2024-06-28 02:52:12,540 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-28 02:52:12,540 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 320 transitions, 2996 flow [2024-06-28 02:52:12,540 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 02:52:12,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:12,540 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 02:52:12,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 02:52:12,541 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:12,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:12,541 INFO L85 PathProgramCache]: Analyzing trace with hash 513383051, now seen corresponding path program 16 times [2024-06-28 02:52:12,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:12,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755173827] [2024-06-28 02:52:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:12,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:13,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:13,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755173827] [2024-06-28 02:52:13,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755173827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:13,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:13,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:13,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971783519] [2024-06-28 02:52:13,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:13,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:13,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:13,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:13,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:13,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:13,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 320 transitions, 2996 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 02:52:13,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:13,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:13,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:14,158 INFO L124 PetriNetUnfolderBase]: 648/1260 cut-off events. [2024-06-28 02:52:14,158 INFO L125 PetriNetUnfolderBase]: For 152884/152884 co-relation queries the response was YES. [2024-06-28 02:52:14,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7879 conditions, 1260 events. 648/1260 cut-off events. For 152884/152884 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7518 event pairs, 72 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 7710. Up to 1114 conditions per place. [2024-06-28 02:52:14,172 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 306 selfloop transitions, 24 changer transitions 0/333 dead transitions. [2024-06-28 02:52:14,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 333 transitions, 3975 flow [2024-06-28 02:52:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:52:14,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 02:52:14,173 INFO L175 Difference]: Start difference. First operand has 370 places, 320 transitions, 2996 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:52:14,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 333 transitions, 3975 flow [2024-06-28 02:52:14,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 333 transitions, 3858 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-28 02:52:14,667 INFO L231 Difference]: Finished difference. Result has 369 places, 321 transitions, 2968 flow [2024-06-28 02:52:14,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2968, PETRI_PLACES=369, PETRI_TRANSITIONS=321} [2024-06-28 02:52:14,667 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-28 02:52:14,667 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 321 transitions, 2968 flow [2024-06-28 02:52:14,668 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 02:52:14,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:14,668 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 02:52:14,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 02:52:14,668 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:14,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:14,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1093038519, now seen corresponding path program 17 times [2024-06-28 02:52:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:14,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671365269] [2024-06-28 02:52:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:16,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:16,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671365269] [2024-06-28 02:52:16,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671365269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:16,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:16,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:16,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586970835] [2024-06-28 02:52:16,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:16,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:16,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:16,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:16,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:16,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:16,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 321 transitions, 2968 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 02:52:16,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:16,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:16,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:16,596 INFO L124 PetriNetUnfolderBase]: 652/1268 cut-off events. [2024-06-28 02:52:16,596 INFO L125 PetriNetUnfolderBase]: For 155529/155529 co-relation queries the response was YES. [2024-06-28 02:52:16,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7935 conditions, 1268 events. 652/1268 cut-off events. For 155529/155529 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7567 event pairs, 74 based on Foata normal form. 2/1269 useless extension candidates. Maximal degree in co-relation 7766. Up to 1152 conditions per place. [2024-06-28 02:52:16,610 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 309 selfloop transitions, 22 changer transitions 0/334 dead transitions. [2024-06-28 02:52:16,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 334 transitions, 3695 flow [2024-06-28 02:52:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:52:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:52:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 02:52:16,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 02:52:16,611 INFO L175 Difference]: Start difference. First operand has 369 places, 321 transitions, 2968 flow. Second operand 12 states and 134 transitions. [2024-06-28 02:52:16,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 334 transitions, 3695 flow [2024-06-28 02:52:17,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 334 transitions, 3611 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:17,085 INFO L231 Difference]: Finished difference. Result has 373 places, 322 transitions, 2974 flow [2024-06-28 02:52:17,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2974, PETRI_PLACES=373, PETRI_TRANSITIONS=322} [2024-06-28 02:52:17,085 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-28 02:52:17,085 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 322 transitions, 2974 flow [2024-06-28 02:52:17,085 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 02:52:17,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:17,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:17,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 02:52:17,085 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:17,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash 199407332, now seen corresponding path program 23 times [2024-06-28 02:52:17,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:17,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930002832] [2024-06-28 02:52:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:18,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930002832] [2024-06-28 02:52:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930002832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:18,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:18,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:18,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075312003] [2024-06-28 02:52:18,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:18,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:18,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:18,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:18,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:18,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 322 transitions, 2974 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 02:52:18,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:18,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:18,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:19,474 INFO L124 PetriNetUnfolderBase]: 650/1265 cut-off events. [2024-06-28 02:52:19,474 INFO L125 PetriNetUnfolderBase]: For 140306/140306 co-relation queries the response was YES. [2024-06-28 02:52:19,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7722 conditions, 1265 events. 650/1265 cut-off events. For 140306/140306 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7552 event pairs, 74 based on Foata normal form. 1/1265 useless extension candidates. Maximal degree in co-relation 7552. Up to 1160 conditions per place. [2024-06-28 02:52:19,485 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 310 selfloop transitions, 19 changer transitions 0/332 dead transitions. [2024-06-28 02:52:19,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 332 transitions, 3654 flow [2024-06-28 02:52:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:19,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:52:19,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:52:19,485 INFO L175 Difference]: Start difference. First operand has 373 places, 322 transitions, 2974 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:52:19,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 332 transitions, 3654 flow [2024-06-28 02:52:19,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 332 transitions, 3530 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-28 02:52:19,936 INFO L231 Difference]: Finished difference. Result has 373 places, 322 transitions, 2893 flow [2024-06-28 02:52:19,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2850, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2893, PETRI_PLACES=373, PETRI_TRANSITIONS=322} [2024-06-28 02:52:19,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-28 02:52:19,937 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 322 transitions, 2893 flow [2024-06-28 02:52:19,937 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 02:52:19,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:19,937 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 02:52:19,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 02:52:19,937 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:19,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:19,937 INFO L85 PathProgramCache]: Analyzing trace with hash 513373472, now seen corresponding path program 24 times [2024-06-28 02:52:19,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:19,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266736566] [2024-06-28 02:52:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:19,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:21,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:21,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266736566] [2024-06-28 02:52:21,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266736566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:21,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:21,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:21,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834633081] [2024-06-28 02:52:21,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:21,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:21,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:21,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:21,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:21,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:21,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 322 transitions, 2893 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 02:52:21,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:21,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:21,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:22,307 INFO L124 PetriNetUnfolderBase]: 648/1262 cut-off events. [2024-06-28 02:52:22,308 INFO L125 PetriNetUnfolderBase]: For 132782/132782 co-relation queries the response was YES. [2024-06-28 02:52:22,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7465 conditions, 1262 events. 648/1262 cut-off events. For 132782/132782 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7554 event pairs, 74 based on Foata normal form. 1/1262 useless extension candidates. Maximal degree in co-relation 7294. Up to 1130 conditions per place. [2024-06-28 02:52:22,319 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 299 selfloop transitions, 32 changer transitions 0/334 dead transitions. [2024-06-28 02:52:22,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 334 transitions, 3581 flow [2024-06-28 02:52:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:52:22,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:52:22,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-28 02:52:22,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36724565756823824 [2024-06-28 02:52:22,320 INFO L175 Difference]: Start difference. First operand has 373 places, 322 transitions, 2893 flow. Second operand 13 states and 148 transitions. [2024-06-28 02:52:22,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 334 transitions, 3581 flow [2024-06-28 02:52:22,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 334 transitions, 3442 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 02:52:22,841 INFO L231 Difference]: Finished difference. Result has 376 places, 322 transitions, 2823 flow [2024-06-28 02:52:22,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2754, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2823, PETRI_PLACES=376, PETRI_TRANSITIONS=322} [2024-06-28 02:52:22,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2024-06-28 02:52:22,842 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 322 transitions, 2823 flow [2024-06-28 02:52:22,842 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 02:52:22,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:22,842 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 02:52:22,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 02:52:22,842 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:22,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:22,842 INFO L85 PathProgramCache]: Analyzing trace with hash 513373751, now seen corresponding path program 18 times [2024-06-28 02:52:22,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:22,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693549743] [2024-06-28 02:52:22,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:22,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:23,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:23,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693549743] [2024-06-28 02:52:23,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693549743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:23,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:23,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:23,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725455672] [2024-06-28 02:52:23,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:23,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:23,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:23,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:23,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:24,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:24,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 322 transitions, 2823 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 02:52:24,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:24,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:24,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:24,413 INFO L124 PetriNetUnfolderBase]: 645/1257 cut-off events. [2024-06-28 02:52:24,414 INFO L125 PetriNetUnfolderBase]: For 125685/125685 co-relation queries the response was YES. [2024-06-28 02:52:24,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7026 conditions, 1257 events. 645/1257 cut-off events. For 125685/125685 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7523 event pairs, 73 based on Foata normal form. 2/1258 useless extension candidates. Maximal degree in co-relation 6855. Up to 1126 conditions per place. [2024-06-28 02:52:24,428 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 303 selfloop transitions, 26 changer transitions 0/332 dead transitions. [2024-06-28 02:52:24,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 332 transitions, 3503 flow [2024-06-28 02:52:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 02:52:24,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 02:52:24,429 INFO L175 Difference]: Start difference. First operand has 376 places, 322 transitions, 2823 flow. Second operand 10 states and 117 transitions. [2024-06-28 02:52:24,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 332 transitions, 3503 flow [2024-06-28 02:52:24,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 332 transitions, 3309 flow, removed 21 selfloop flow, removed 15 redundant places. [2024-06-28 02:52:24,883 INFO L231 Difference]: Finished difference. Result has 371 places, 322 transitions, 2688 flow [2024-06-28 02:52:24,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2688, PETRI_PLACES=371, PETRI_TRANSITIONS=322} [2024-06-28 02:52:24,884 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-06-28 02:52:24,884 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 322 transitions, 2688 flow [2024-06-28 02:52:24,884 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 02:52:24,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:24,884 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 02:52:24,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 02:52:24,884 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:24,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:24,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2029810474, now seen corresponding path program 16 times [2024-06-28 02:52:24,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:24,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461137216] [2024-06-28 02:52:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:24,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:25,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:25,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461137216] [2024-06-28 02:52:25,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461137216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:25,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:25,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:25,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079443713] [2024-06-28 02:52:25,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:25,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:25,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:25,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:25,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:25,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:25,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 322 transitions, 2688 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 02:52:25,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:25,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:25,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:26,383 INFO L124 PetriNetUnfolderBase]: 662/1296 cut-off events. [2024-06-28 02:52:26,384 INFO L125 PetriNetUnfolderBase]: For 128181/128181 co-relation queries the response was YES. [2024-06-28 02:52:26,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 1296 events. 662/1296 cut-off events. For 128181/128181 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7880 event pairs, 64 based on Foata normal form. 2/1297 useless extension candidates. Maximal degree in co-relation 6949. Up to 1135 conditions per place. [2024-06-28 02:52:26,398 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 317 selfloop transitions, 28 changer transitions 0/348 dead transitions. [2024-06-28 02:52:26,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 348 transitions, 3519 flow [2024-06-28 02:52:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:26,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:52:26,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:52:26,398 INFO L175 Difference]: Start difference. First operand has 371 places, 322 transitions, 2688 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:52:26,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 348 transitions, 3519 flow [2024-06-28 02:52:26,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 348 transitions, 3462 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:26,815 INFO L231 Difference]: Finished difference. Result has 375 places, 327 transitions, 2788 flow [2024-06-28 02:52:26,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2631, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2788, PETRI_PLACES=375, PETRI_TRANSITIONS=327} [2024-06-28 02:52:26,815 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-28 02:52:26,815 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 327 transitions, 2788 flow [2024-06-28 02:52:26,815 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 02:52:26,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:26,816 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 02:52:26,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 02:52:26,816 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:26,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:26,816 INFO L85 PathProgramCache]: Analyzing trace with hash 3009446, now seen corresponding path program 17 times [2024-06-28 02:52:26,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:26,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878293157] [2024-06-28 02:52:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:26,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:27,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:27,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878293157] [2024-06-28 02:52:27,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878293157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:27,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:27,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:27,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678879207] [2024-06-28 02:52:27,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:27,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:27,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:27,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:27,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:27,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:27,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 327 transitions, 2788 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 02:52:27,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:27,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:27,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:28,303 INFO L124 PetriNetUnfolderBase]: 675/1323 cut-off events. [2024-06-28 02:52:28,303 INFO L125 PetriNetUnfolderBase]: For 130333/130333 co-relation queries the response was YES. [2024-06-28 02:52:28,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7364 conditions, 1323 events. 675/1323 cut-off events. For 130333/130333 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8112 event pairs, 40 based on Foata normal form. 2/1324 useless extension candidates. Maximal degree in co-relation 7190. Up to 1127 conditions per place. [2024-06-28 02:52:28,319 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 317 selfloop transitions, 31 changer transitions 0/351 dead transitions. [2024-06-28 02:52:28,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 351 transitions, 3616 flow [2024-06-28 02:52:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:28,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:52:28,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 02:52:28,320 INFO L175 Difference]: Start difference. First operand has 375 places, 327 transitions, 2788 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:52:28,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 351 transitions, 3616 flow [2024-06-28 02:52:28,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 351 transitions, 3500 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 02:52:28,817 INFO L231 Difference]: Finished difference. Result has 381 places, 330 transitions, 2824 flow [2024-06-28 02:52:28,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2824, PETRI_PLACES=381, PETRI_TRANSITIONS=330} [2024-06-28 02:52:28,817 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-28 02:52:28,817 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 330 transitions, 2824 flow [2024-06-28 02:52:28,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:28,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:28,817 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 02:52:28,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 02:52:28,818 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:28,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:28,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1695377936, now seen corresponding path program 18 times [2024-06-28 02:52:28,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:28,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821471387] [2024-06-28 02:52:28,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:28,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:29,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:29,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821471387] [2024-06-28 02:52:29,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821471387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:29,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:29,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:29,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884688642] [2024-06-28 02:52:29,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:29,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:29,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:29,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:29,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:29,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 330 transitions, 2824 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 02:52:29,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:29,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:29,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:30,290 INFO L124 PetriNetUnfolderBase]: 692/1360 cut-off events. [2024-06-28 02:52:30,290 INFO L125 PetriNetUnfolderBase]: For 132717/132717 co-relation queries the response was YES. [2024-06-28 02:52:30,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7541 conditions, 1360 events. 692/1360 cut-off events. For 132717/132717 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8416 event pairs, 77 based on Foata normal form. 2/1361 useless extension candidates. Maximal degree in co-relation 7365. Up to 1194 conditions per place. [2024-06-28 02:52:30,302 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 324 selfloop transitions, 28 changer transitions 0/355 dead transitions. [2024-06-28 02:52:30,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 355 transitions, 3683 flow [2024-06-28 02:52:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:52:30,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:52:30,303 INFO L175 Difference]: Start difference. First operand has 381 places, 330 transitions, 2824 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:52:30,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 355 transitions, 3683 flow [2024-06-28 02:52:30,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 355 transitions, 3541 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:30,778 INFO L231 Difference]: Finished difference. Result has 386 places, 335 transitions, 2855 flow [2024-06-28 02:52:30,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2688, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2855, PETRI_PLACES=386, PETRI_TRANSITIONS=335} [2024-06-28 02:52:30,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-28 02:52:30,779 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 335 transitions, 2855 flow [2024-06-28 02:52:30,779 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 02:52:30,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:30,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:30,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 02:52:30,779 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:30,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:30,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1289555788, now seen corresponding path program 19 times [2024-06-28 02:52:30,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:30,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560534797] [2024-06-28 02:52:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:30,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:31,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:31,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560534797] [2024-06-28 02:52:31,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560534797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:31,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:31,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:31,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699250602] [2024-06-28 02:52:31,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:31,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:31,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:31,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:31,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:31,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:31,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 335 transitions, 2855 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 02:52:31,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:31,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:31,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:32,199 INFO L124 PetriNetUnfolderBase]: 689/1354 cut-off events. [2024-06-28 02:52:32,199 INFO L125 PetriNetUnfolderBase]: For 114704/114704 co-relation queries the response was YES. [2024-06-28 02:52:32,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7070 conditions, 1354 events. 689/1354 cut-off events. For 114704/114704 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8354 event pairs, 72 based on Foata normal form. 2/1355 useless extension candidates. Maximal degree in co-relation 6892. Up to 1189 conditions per place. [2024-06-28 02:52:32,215 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 324 selfloop transitions, 27 changer transitions 0/354 dead transitions. [2024-06-28 02:52:32,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 354 transitions, 3607 flow [2024-06-28 02:52:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:32,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:52:32,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:52:32,215 INFO L175 Difference]: Start difference. First operand has 386 places, 335 transitions, 2855 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:52:32,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 354 transitions, 3607 flow [2024-06-28 02:52:32,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 354 transitions, 3498 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 02:52:32,648 INFO L231 Difference]: Finished difference. Result has 392 places, 335 transitions, 2804 flow [2024-06-28 02:52:32,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2804, PETRI_PLACES=392, PETRI_TRANSITIONS=335} [2024-06-28 02:52:32,648 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 02:52:32,648 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 335 transitions, 2804 flow [2024-06-28 02:52:32,648 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 02:52:32,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:32,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:32,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 02:52:32,649 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:32,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:32,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1849345424, now seen corresponding path program 1 times [2024-06-28 02:52:32,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:32,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4560529] [2024-06-28 02:52:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:32,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:33,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:33,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4560529] [2024-06-28 02:52:33,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4560529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:33,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:33,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:33,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898753612] [2024-06-28 02:52:33,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:33,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:33,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:33,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:33,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:33,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:33,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 335 transitions, 2804 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 02:52:33,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:33,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:33,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:34,279 INFO L124 PetriNetUnfolderBase]: 701/1383 cut-off events. [2024-06-28 02:52:34,280 INFO L125 PetriNetUnfolderBase]: For 167221/167221 co-relation queries the response was YES. [2024-06-28 02:52:34,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7080 conditions, 1383 events. 701/1383 cut-off events. For 167221/167221 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8583 event pairs, 83 based on Foata normal form. 8/1390 useless extension candidates. Maximal degree in co-relation 6902. Up to 1188 conditions per place. [2024-06-28 02:52:34,297 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 315 selfloop transitions, 27 changer transitions 12/357 dead transitions. [2024-06-28 02:52:34,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 357 transitions, 3600 flow [2024-06-28 02:52:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:52:34,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:52:34,298 INFO L175 Difference]: Start difference. First operand has 392 places, 335 transitions, 2804 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:52:34,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 357 transitions, 3600 flow [2024-06-28 02:52:34,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 357 transitions, 3368 flow, removed 40 selfloop flow, removed 16 redundant places. [2024-06-28 02:52:34,697 INFO L231 Difference]: Finished difference. Result has 387 places, 332 transitions, 2615 flow [2024-06-28 02:52:34,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2615, PETRI_PLACES=387, PETRI_TRANSITIONS=332} [2024-06-28 02:52:34,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 02:52:34,697 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 332 transitions, 2615 flow [2024-06-28 02:52:34,697 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 02:52:34,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:34,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:34,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 02:52:34,698 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:34,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:34,698 INFO L85 PathProgramCache]: Analyzing trace with hash -399565968, now seen corresponding path program 2 times [2024-06-28 02:52:34,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:34,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323906841] [2024-06-28 02:52:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:34,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:35,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:35,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323906841] [2024-06-28 02:52:35,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323906841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:35,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:35,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:35,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303192774] [2024-06-28 02:52:35,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:35,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:35,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:35,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:35,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:35,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:35,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 332 transitions, 2615 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 02:52:35,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:35,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:35,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:36,436 INFO L124 PetriNetUnfolderBase]: 720/1424 cut-off events. [2024-06-28 02:52:36,436 INFO L125 PetriNetUnfolderBase]: For 261558/261558 co-relation queries the response was YES. [2024-06-28 02:52:36,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8466 conditions, 1424 events. 720/1424 cut-off events. For 261558/261558 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8826 event pairs, 96 based on Foata normal form. 8/1431 useless extension candidates. Maximal degree in co-relation 8295. Up to 1163 conditions per place. [2024-06-28 02:52:36,452 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 318 selfloop transitions, 30 changer transitions 7/358 dead transitions. [2024-06-28 02:52:36,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 358 transitions, 3773 flow [2024-06-28 02:52:36,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:36,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 02:52:36,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-28 02:52:36,453 INFO L175 Difference]: Start difference. First operand has 387 places, 332 transitions, 2615 flow. Second operand 11 states and 141 transitions. [2024-06-28 02:52:36,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 358 transitions, 3773 flow [2024-06-28 02:52:37,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 358 transitions, 3707 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 02:52:37,293 INFO L231 Difference]: Finished difference. Result has 383 places, 330 transitions, 2608 flow [2024-06-28 02:52:37,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2555, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2608, PETRI_PLACES=383, PETRI_TRANSITIONS=330} [2024-06-28 02:52:37,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 353 predicate places. [2024-06-28 02:52:37,293 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 330 transitions, 2608 flow [2024-06-28 02:52:37,293 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 02:52:37,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:37,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:37,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 02:52:37,294 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:37,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:37,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1844583824, now seen corresponding path program 3 times [2024-06-28 02:52:37,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:37,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456669703] [2024-06-28 02:52:37,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:37,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:38,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:38,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456669703] [2024-06-28 02:52:38,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456669703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:38,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:38,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:38,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539875544] [2024-06-28 02:52:38,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:38,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:38,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:38,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:38,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:38,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 330 transitions, 2608 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 02:52:38,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:38,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:38,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:38,977 INFO L124 PetriNetUnfolderBase]: 689/1363 cut-off events. [2024-06-28 02:52:38,977 INFO L125 PetriNetUnfolderBase]: For 180664/180664 co-relation queries the response was YES. [2024-06-28 02:52:38,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6800 conditions, 1363 events. 689/1363 cut-off events. For 180664/180664 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8456 event pairs, 87 based on Foata normal form. 10/1372 useless extension candidates. Maximal degree in co-relation 6631. Up to 1163 conditions per place. [2024-06-28 02:52:38,992 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 307 selfloop transitions, 22 changer transitions 19/351 dead transitions. [2024-06-28 02:52:38,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 351 transitions, 3432 flow [2024-06-28 02:52:38,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:38,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:52:38,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:52:38,993 INFO L175 Difference]: Start difference. First operand has 383 places, 330 transitions, 2608 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:52:38,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 351 transitions, 3432 flow [2024-06-28 02:52:39,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 351 transitions, 3371 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:52:39,407 INFO L231 Difference]: Finished difference. Result has 382 places, 320 transitions, 2536 flow [2024-06-28 02:52:39,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2536, PETRI_PLACES=382, PETRI_TRANSITIONS=320} [2024-06-28 02:52:39,408 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-28 02:52:39,408 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 320 transitions, 2536 flow [2024-06-28 02:52:39,408 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 02:52:39,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:39,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:39,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 02:52:39,408 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:39,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:39,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1145278798, now seen corresponding path program 4 times [2024-06-28 02:52:39,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:39,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001501786] [2024-06-28 02:52:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:39,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:40,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:40,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001501786] [2024-06-28 02:52:40,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001501786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:40,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:40,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:40,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631786137] [2024-06-28 02:52:40,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:40,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:40,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:40,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:40,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 320 transitions, 2536 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 02:52:40,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:40,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:40,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:40,956 INFO L124 PetriNetUnfolderBase]: 661/1311 cut-off events. [2024-06-28 02:52:40,956 INFO L125 PetriNetUnfolderBase]: For 109074/109074 co-relation queries the response was YES. [2024-06-28 02:52:40,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6541 conditions, 1311 events. 661/1311 cut-off events. For 109074/109074 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8081 event pairs, 38 based on Foata normal form. 2/1312 useless extension candidates. Maximal degree in co-relation 6373. Up to 1012 conditions per place. [2024-06-28 02:52:40,971 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 300 selfloop transitions, 38 changer transitions 0/341 dead transitions. [2024-06-28 02:52:40,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 341 transitions, 3288 flow [2024-06-28 02:52:40,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:40,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:40,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:52:40,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 02:52:40,972 INFO L175 Difference]: Start difference. First operand has 382 places, 320 transitions, 2536 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:52:40,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 341 transitions, 3288 flow [2024-06-28 02:52:41,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 341 transitions, 3232 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:41,309 INFO L231 Difference]: Finished difference. Result has 375 places, 321 transitions, 2594 flow [2024-06-28 02:52:41,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2594, PETRI_PLACES=375, PETRI_TRANSITIONS=321} [2024-06-28 02:52:41,310 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-28 02:52:41,310 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 321 transitions, 2594 flow [2024-06-28 02:52:41,310 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 02:52:41,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:41,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:41,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 02:52:41,311 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:41,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:41,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1273901294, now seen corresponding path program 5 times [2024-06-28 02:52:41,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:41,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862899179] [2024-06-28 02:52:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:41,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:42,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:42,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862899179] [2024-06-28 02:52:42,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862899179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:42,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:42,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:42,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124765008] [2024-06-28 02:52:42,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:42,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:42,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:42,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:42,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:42,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 321 transitions, 2594 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 02:52:42,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:42,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:42,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:43,052 INFO L124 PetriNetUnfolderBase]: 672/1331 cut-off events. [2024-06-28 02:52:43,052 INFO L125 PetriNetUnfolderBase]: For 123772/123772 co-relation queries the response was YES. [2024-06-28 02:52:43,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7004 conditions, 1331 events. 672/1331 cut-off events. For 123772/123772 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8226 event pairs, 85 based on Foata normal form. 2/1332 useless extension candidates. Maximal degree in co-relation 6838. Up to 1141 conditions per place. [2024-06-28 02:52:43,063 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 304 selfloop transitions, 33 changer transitions 1/341 dead transitions. [2024-06-28 02:52:43,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 341 transitions, 3642 flow [2024-06-28 02:52:43,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:52:43,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:52:43,064 INFO L175 Difference]: Start difference. First operand has 375 places, 321 transitions, 2594 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:52:43,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 341 transitions, 3642 flow [2024-06-28 02:52:43,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 341 transitions, 3546 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:43,505 INFO L231 Difference]: Finished difference. Result has 378 places, 323 transitions, 2637 flow [2024-06-28 02:52:43,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2637, PETRI_PLACES=378, PETRI_TRANSITIONS=323} [2024-06-28 02:52:43,506 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 348 predicate places. [2024-06-28 02:52:43,506 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 323 transitions, 2637 flow [2024-06-28 02:52:43,506 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 02:52:43,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:43,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:43,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 02:52:43,506 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:43,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:43,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1278365294, now seen corresponding path program 6 times [2024-06-28 02:52:43,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:43,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047374701] [2024-06-28 02:52:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:43,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:44,546 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 02:52:44,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:44,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047374701] [2024-06-28 02:52:44,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047374701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:44,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:44,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:44,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964684597] [2024-06-28 02:52:44,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:44,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:44,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:44,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:44,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:44,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:44,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 323 transitions, 2637 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 02:52:44,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:44,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:44,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:45,084 INFO L124 PetriNetUnfolderBase]: 666/1325 cut-off events. [2024-06-28 02:52:45,084 INFO L125 PetriNetUnfolderBase]: For 159484/159484 co-relation queries the response was YES. [2024-06-28 02:52:45,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6581 conditions, 1325 events. 666/1325 cut-off events. For 159484/159484 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8157 event pairs, 90 based on Foata normal form. 8/1332 useless extension candidates. Maximal degree in co-relation 6413. Up to 1124 conditions per place. [2024-06-28 02:52:45,099 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 300 selfloop transitions, 29 changer transitions 8/340 dead transitions. [2024-06-28 02:52:45,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 340 transitions, 3359 flow [2024-06-28 02:52:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:52:45,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:52:45,100 INFO L175 Difference]: Start difference. First operand has 378 places, 323 transitions, 2637 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:52:45,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 340 transitions, 3359 flow [2024-06-28 02:52:45,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 340 transitions, 3253 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 02:52:45,463 INFO L231 Difference]: Finished difference. Result has 383 places, 320 transitions, 2565 flow [2024-06-28 02:52:45,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2565, PETRI_PLACES=383, PETRI_TRANSITIONS=320} [2024-06-28 02:52:45,463 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 353 predicate places. [2024-06-28 02:52:45,464 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 320 transitions, 2565 flow [2024-06-28 02:52:45,464 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 02:52:45,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:45,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:45,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 02:52:45,464 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:45,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:45,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1278485264, now seen corresponding path program 7 times [2024-06-28 02:52:45,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:45,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977553518] [2024-06-28 02:52:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:45,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:46,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:46,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977553518] [2024-06-28 02:52:46,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977553518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:46,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:46,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:46,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971562808] [2024-06-28 02:52:46,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:46,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:46,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:46,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:46,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:46,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:46,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 320 transitions, 2565 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 02:52:46,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:46,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:46,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:47,072 INFO L124 PetriNetUnfolderBase]: 655/1300 cut-off events. [2024-06-28 02:52:47,072 INFO L125 PetriNetUnfolderBase]: For 110516/110516 co-relation queries the response was YES. [2024-06-28 02:52:47,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6463 conditions, 1300 events. 655/1300 cut-off events. For 110516/110516 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7993 event pairs, 80 based on Foata normal form. 2/1301 useless extension candidates. Maximal degree in co-relation 6293. Up to 1113 conditions per place. [2024-06-28 02:52:47,086 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 304 selfloop transitions, 31 changer transitions 0/338 dead transitions. [2024-06-28 02:52:47,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 338 transitions, 3307 flow [2024-06-28 02:52:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:47,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:47,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:52:47,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 02:52:47,087 INFO L175 Difference]: Start difference. First operand has 383 places, 320 transitions, 2565 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:52:47,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 338 transitions, 3307 flow [2024-06-28 02:52:47,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 338 transitions, 3233 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 02:52:47,464 INFO L231 Difference]: Finished difference. Result has 380 places, 321 transitions, 2591 flow [2024-06-28 02:52:47,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2591, PETRI_PLACES=380, PETRI_TRANSITIONS=321} [2024-06-28 02:52:47,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-28 02:52:47,464 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 321 transitions, 2591 flow [2024-06-28 02:52:47,465 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 02:52:47,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:47,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:47,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 02:52:47,465 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:47,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:47,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1572535354, now seen corresponding path program 8 times [2024-06-28 02:52:47,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:47,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546184877] [2024-06-28 02:52:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:47,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:48,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:48,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546184877] [2024-06-28 02:52:48,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546184877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:48,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:48,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:48,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899472968] [2024-06-28 02:52:48,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:48,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:48,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:48,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:48,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:48,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 321 transitions, 2591 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 02:52:48,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:48,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:48,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:49,256 INFO L124 PetriNetUnfolderBase]: 659/1304 cut-off events. [2024-06-28 02:52:49,256 INFO L125 PetriNetUnfolderBase]: For 111106/111106 co-relation queries the response was YES. [2024-06-28 02:52:49,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6536 conditions, 1304 events. 659/1304 cut-off events. For 111106/111106 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8022 event pairs, 82 based on Foata normal form. 2/1305 useless extension candidates. Maximal degree in co-relation 6367. Up to 1115 conditions per place. [2024-06-28 02:52:49,270 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 296 selfloop transitions, 38 changer transitions 0/337 dead transitions. [2024-06-28 02:52:49,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 337 transitions, 3329 flow [2024-06-28 02:52:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:49,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:52:49,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:52:49,271 INFO L175 Difference]: Start difference. First operand has 380 places, 321 transitions, 2591 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:52:49,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 337 transitions, 3329 flow [2024-06-28 02:52:49,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 337 transitions, 3221 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 02:52:49,627 INFO L231 Difference]: Finished difference. Result has 381 places, 322 transitions, 2599 flow [2024-06-28 02:52:49,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2483, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2599, PETRI_PLACES=381, PETRI_TRANSITIONS=322} [2024-06-28 02:52:49,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-28 02:52:49,627 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 322 transitions, 2599 flow [2024-06-28 02:52:49,628 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 02:52:49,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:49,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:49,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 02:52:49,628 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:49,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:49,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1107489884, now seen corresponding path program 9 times [2024-06-28 02:52:49,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:49,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575383579] [2024-06-28 02:52:49,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:49,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:50,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:50,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575383579] [2024-06-28 02:52:50,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575383579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:50,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:50,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:50,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715195717] [2024-06-28 02:52:50,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:50,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:50,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:50,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:50,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:50,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:50,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 322 transitions, 2599 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 02:52:50,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:50,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:50,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:51,355 INFO L124 PetriNetUnfolderBase]: 663/1312 cut-off events. [2024-06-28 02:52:51,355 INFO L125 PetriNetUnfolderBase]: For 112818/112818 co-relation queries the response was YES. [2024-06-28 02:52:51,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6562 conditions, 1312 events. 663/1312 cut-off events. For 112818/112818 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8092 event pairs, 84 based on Foata normal form. 2/1313 useless extension candidates. Maximal degree in co-relation 6393. Up to 1111 conditions per place. [2024-06-28 02:52:51,369 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 290 selfloop transitions, 45 changer transitions 0/338 dead transitions. [2024-06-28 02:52:51,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 338 transitions, 3341 flow [2024-06-28 02:52:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:51,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 02:52:51,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-28 02:52:51,370 INFO L175 Difference]: Start difference. First operand has 381 places, 322 transitions, 2599 flow. Second operand 11 states and 137 transitions. [2024-06-28 02:52:51,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 338 transitions, 3341 flow [2024-06-28 02:52:51,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 338 transitions, 3208 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 02:52:51,708 INFO L231 Difference]: Finished difference. Result has 382 places, 323 transitions, 2598 flow [2024-06-28 02:52:51,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2466, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2598, PETRI_PLACES=382, PETRI_TRANSITIONS=323} [2024-06-28 02:52:51,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-28 02:52:51,708 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 323 transitions, 2598 flow [2024-06-28 02:52:51,708 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 02:52:51,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:51,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:51,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 02:52:51,708 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:51,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:51,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1107667514, now seen corresponding path program 10 times [2024-06-28 02:52:51,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:51,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102197150] [2024-06-28 02:52:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:51,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:52,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:52,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:52,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102197150] [2024-06-28 02:52:52,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102197150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:52,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:52,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:52,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594362889] [2024-06-28 02:52:52,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:52,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:52,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:52,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:52,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:52,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:52,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 323 transitions, 2598 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 02:52:52,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:52,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:52,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:53,544 INFO L124 PetriNetUnfolderBase]: 689/1366 cut-off events. [2024-06-28 02:52:53,544 INFO L125 PetriNetUnfolderBase]: For 185668/185668 co-relation queries the response was YES. [2024-06-28 02:52:53,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7919 conditions, 1366 events. 689/1366 cut-off events. For 185668/185668 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8453 event pairs, 94 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 7749. Up to 1095 conditions per place. [2024-06-28 02:52:53,556 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 294 selfloop transitions, 47 changer transitions 0/344 dead transitions. [2024-06-28 02:52:53,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 344 transitions, 3680 flow [2024-06-28 02:52:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 02:52:53,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-28 02:52:53,556 INFO L175 Difference]: Start difference. First operand has 382 places, 323 transitions, 2598 flow. Second operand 11 states and 142 transitions. [2024-06-28 02:52:53,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 344 transitions, 3680 flow [2024-06-28 02:52:54,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 344 transitions, 3558 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:54,227 INFO L231 Difference]: Finished difference. Result has 384 places, 324 transitions, 2614 flow [2024-06-28 02:52:54,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2476, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2614, PETRI_PLACES=384, PETRI_TRANSITIONS=324} [2024-06-28 02:52:54,228 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-06-28 02:52:54,228 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 324 transitions, 2614 flow [2024-06-28 02:52:54,228 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 02:52:54,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:54,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:54,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 02:52:54,228 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:54,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:54,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1578784520, now seen corresponding path program 1 times [2024-06-28 02:52:54,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:54,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183767795] [2024-06-28 02:52:54,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:54,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:55,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:55,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183767795] [2024-06-28 02:52:55,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183767795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:55,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:55,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:52:55,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762693625] [2024-06-28 02:52:55,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:55,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:52:55,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:55,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:52:55,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:52:56,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:56,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 324 transitions, 2614 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:56,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:56,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:56,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:56,842 INFO L124 PetriNetUnfolderBase]: 701/1394 cut-off events. [2024-06-28 02:52:56,842 INFO L125 PetriNetUnfolderBase]: For 241372/241372 co-relation queries the response was YES. [2024-06-28 02:52:56,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8036 conditions, 1394 events. 701/1394 cut-off events. For 241372/241372 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8673 event pairs, 100 based on Foata normal form. 8/1401 useless extension candidates. Maximal degree in co-relation 7865. Up to 1157 conditions per place. [2024-06-28 02:52:56,858 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 39 changer transitions 13/343 dead transitions. [2024-06-28 02:52:56,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 343 transitions, 3382 flow [2024-06-28 02:52:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:52:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:52:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 02:52:56,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 02:52:56,859 INFO L175 Difference]: Start difference. First operand has 384 places, 324 transitions, 2614 flow. Second operand 12 states and 150 transitions. [2024-06-28 02:52:56,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 343 transitions, 3382 flow [2024-06-28 02:52:57,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 343 transitions, 3254 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:57,595 INFO L231 Difference]: Finished difference. Result has 387 places, 318 transitions, 2529 flow [2024-06-28 02:52:57,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2486, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2529, PETRI_PLACES=387, PETRI_TRANSITIONS=318} [2024-06-28 02:52:57,596 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 02:52:57,596 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 318 transitions, 2529 flow [2024-06-28 02:52:57,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:57,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:57,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:57,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 02:52:57,596 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:57,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:57,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1101226830, now seen corresponding path program 2 times [2024-06-28 02:52:57,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:57,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653635577] [2024-06-28 02:52:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:57,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:59,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:59,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:59,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653635577] [2024-06-28 02:52:59,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653635577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:59,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:59,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:52:59,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480986865] [2024-06-28 02:52:59,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:59,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:52:59,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:52:59,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:52:59,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:52:59,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 318 transitions, 2529 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:59,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:59,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:52:59,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:59,676 INFO L124 PetriNetUnfolderBase]: 667/1332 cut-off events. [2024-06-28 02:52:59,676 INFO L125 PetriNetUnfolderBase]: For 174042/174042 co-relation queries the response was YES. [2024-06-28 02:52:59,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6563 conditions, 1332 events. 667/1332 cut-off events. For 174042/174042 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8247 event pairs, 90 based on Foata normal form. 8/1339 useless extension candidates. Maximal degree in co-relation 6391. Up to 1103 conditions per place. [2024-06-28 02:52:59,690 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 290 selfloop transitions, 31 changer transitions 13/337 dead transitions. [2024-06-28 02:52:59,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 337 transitions, 3285 flow [2024-06-28 02:52:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:52:59,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:52:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 02:52:59,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 02:52:59,691 INFO L175 Difference]: Start difference. First operand has 387 places, 318 transitions, 2529 flow. Second operand 12 states and 146 transitions. [2024-06-28 02:52:59,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 337 transitions, 3285 flow [2024-06-28 02:53:00,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 337 transitions, 3195 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:00,084 INFO L231 Difference]: Finished difference. Result has 381 places, 312 transitions, 2459 flow [2024-06-28 02:53:00,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2459, PETRI_PLACES=381, PETRI_TRANSITIONS=312} [2024-06-28 02:53:00,084 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-28 02:53:00,084 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 312 transitions, 2459 flow [2024-06-28 02:53:00,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:00,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:00,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:00,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 02:53:00,085 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:00,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:00,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1100987820, now seen corresponding path program 3 times [2024-06-28 02:53:00,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:00,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148112405] [2024-06-28 02:53:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:00,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:01,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:01,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:01,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148112405] [2024-06-28 02:53:01,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148112405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:01,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:01,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:01,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935306870] [2024-06-28 02:53:01,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:01,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:01,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:01,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:01,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:01,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:01,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 312 transitions, 2459 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:01,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:01,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:01,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:01,927 INFO L124 PetriNetUnfolderBase]: 673/1352 cut-off events. [2024-06-28 02:53:01,927 INFO L125 PetriNetUnfolderBase]: For 215156/215156 co-relation queries the response was YES. [2024-06-28 02:53:01,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7694 conditions, 1352 events. 673/1352 cut-off events. For 215156/215156 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8369 event pairs, 98 based on Foata normal form. 6/1357 useless extension candidates. Maximal degree in co-relation 7525. Up to 1083 conditions per place. [2024-06-28 02:53:01,943 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 33 changer transitions 6/335 dead transitions. [2024-06-28 02:53:01,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 335 transitions, 3525 flow [2024-06-28 02:53:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:01,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 02:53:01,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 02:53:01,944 INFO L175 Difference]: Start difference. First operand has 381 places, 312 transitions, 2459 flow. Second operand 12 states and 148 transitions. [2024-06-28 02:53:01,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 335 transitions, 3525 flow [2024-06-28 02:53:02,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 335 transitions, 3440 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:02,608 INFO L231 Difference]: Finished difference. Result has 375 places, 310 transitions, 2437 flow [2024-06-28 02:53:02,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2437, PETRI_PLACES=375, PETRI_TRANSITIONS=310} [2024-06-28 02:53:02,609 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-28 02:53:02,609 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 310 transitions, 2437 flow [2024-06-28 02:53:02,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:02,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:02,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:02,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 02:53:02,609 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:02,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:02,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1100996190, now seen corresponding path program 4 times [2024-06-28 02:53:02,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:02,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455225476] [2024-06-28 02:53:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:02,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:04,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:04,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455225476] [2024-06-28 02:53:04,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455225476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:04,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:04,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:04,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137681564] [2024-06-28 02:53:04,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:04,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:04,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:04,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:04,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:04,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:04,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 310 transitions, 2437 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:04,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:04,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:04,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:04,777 INFO L124 PetriNetUnfolderBase]: 649/1300 cut-off events. [2024-06-28 02:53:04,777 INFO L125 PetriNetUnfolderBase]: For 158585/158585 co-relation queries the response was YES. [2024-06-28 02:53:04,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6349 conditions, 1300 events. 649/1300 cut-off events. For 158585/158585 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8011 event pairs, 90 based on Foata normal form. 8/1307 useless extension candidates. Maximal degree in co-relation 6183. Up to 1083 conditions per place. [2024-06-28 02:53:04,791 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 284 selfloop transitions, 29 changer transitions 13/329 dead transitions. [2024-06-28 02:53:04,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 329 transitions, 3177 flow [2024-06-28 02:53:04,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:04,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 02:53:04,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-28 02:53:04,792 INFO L175 Difference]: Start difference. First operand has 375 places, 310 transitions, 2437 flow. Second operand 12 states and 143 transitions. [2024-06-28 02:53:04,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 329 transitions, 3177 flow [2024-06-28 02:53:05,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 329 transitions, 3109 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:53:05,225 INFO L231 Difference]: Finished difference. Result has 374 places, 305 transitions, 2397 flow [2024-06-28 02:53:05,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2397, PETRI_PLACES=374, PETRI_TRANSITIONS=305} [2024-06-28 02:53:05,226 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2024-06-28 02:53:05,226 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 305 transitions, 2397 flow [2024-06-28 02:53:05,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:05,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:05,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:05,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 02:53:05,226 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:05,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:05,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1720823116, now seen corresponding path program 11 times [2024-06-28 02:53:05,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:05,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088638940] [2024-06-28 02:53:05,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:05,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:06,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:06,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088638940] [2024-06-28 02:53:06,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088638940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:06,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:06,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:06,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068456918] [2024-06-28 02:53:06,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:06,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:06,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:06,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:06,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:06,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:06,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 305 transitions, 2397 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 02:53:06,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:06,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:06,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:06,958 INFO L124 PetriNetUnfolderBase]: 634/1266 cut-off events. [2024-06-28 02:53:06,958 INFO L125 PetriNetUnfolderBase]: For 107196/107196 co-relation queries the response was YES. [2024-06-28 02:53:06,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6209 conditions, 1266 events. 634/1266 cut-off events. For 107196/107196 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7742 event pairs, 84 based on Foata normal form. 2/1267 useless extension candidates. Maximal degree in co-relation 6044. Up to 1037 conditions per place. [2024-06-28 02:53:06,969 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 258 selfloop transitions, 58 changer transitions 0/319 dead transitions. [2024-06-28 02:53:06,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 319 transitions, 3091 flow [2024-06-28 02:53:06,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:53:06,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:53:06,970 INFO L175 Difference]: Start difference. First operand has 374 places, 305 transitions, 2397 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:53:06,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 319 transitions, 3091 flow [2024-06-28 02:53:07,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 319 transitions, 3017 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:53:07,350 INFO L231 Difference]: Finished difference. Result has 366 places, 306 transitions, 2477 flow [2024-06-28 02:53:07,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2477, PETRI_PLACES=366, PETRI_TRANSITIONS=306} [2024-06-28 02:53:07,350 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 02:53:07,350 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 306 transitions, 2477 flow [2024-06-28 02:53:07,351 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 02:53:07,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:07,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:07,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 02:53:07,351 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:07,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:07,351 INFO L85 PathProgramCache]: Analyzing trace with hash 881338462, now seen corresponding path program 12 times [2024-06-28 02:53:07,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:07,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988594215] [2024-06-28 02:53:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:07,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:08,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:08,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988594215] [2024-06-28 02:53:08,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988594215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:08,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:08,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:08,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952561067] [2024-06-28 02:53:08,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:08,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:08,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:08,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:08,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:08,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:08,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 306 transitions, 2477 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 02:53:08,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:08,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:08,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:08,950 INFO L124 PetriNetUnfolderBase]: 650/1298 cut-off events. [2024-06-28 02:53:08,950 INFO L125 PetriNetUnfolderBase]: For 169840/169840 co-relation queries the response was YES. [2024-06-28 02:53:08,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6443 conditions, 1298 events. 650/1298 cut-off events. For 169840/169840 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7985 event pairs, 86 based on Foata normal form. 10/1307 useless extension candidates. Maximal degree in co-relation 6281. Up to 1000 conditions per place. [2024-06-28 02:53:08,964 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 246 selfloop transitions, 68 changer transitions 6/323 dead transitions. [2024-06-28 02:53:08,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 323 transitions, 3227 flow [2024-06-28 02:53:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-28 02:53:08,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:53:08,965 INFO L175 Difference]: Start difference. First operand has 366 places, 306 transitions, 2477 flow. Second operand 11 states and 143 transitions. [2024-06-28 02:53:08,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 323 transitions, 3227 flow [2024-06-28 02:53:09,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 323 transitions, 3083 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:09,329 INFO L231 Difference]: Finished difference. Result has 368 places, 304 transitions, 2488 flow [2024-06-28 02:53:09,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2488, PETRI_PLACES=368, PETRI_TRANSITIONS=304} [2024-06-28 02:53:09,329 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-06-28 02:53:09,329 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 304 transitions, 2488 flow [2024-06-28 02:53:09,329 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 02:53:09,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:09,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:09,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 02:53:09,329 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:09,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:09,330 INFO L85 PathProgramCache]: Analyzing trace with hash -835815952, now seen corresponding path program 13 times [2024-06-28 02:53:09,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:09,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654854863] [2024-06-28 02:53:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:09,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:10,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654854863] [2024-06-28 02:53:10,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654854863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:10,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:10,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:10,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460304310] [2024-06-28 02:53:10,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:10,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:10,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:10,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:10,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:10,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:10,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 304 transitions, 2488 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 02:53:10,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:10,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:10,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:10,946 INFO L124 PetriNetUnfolderBase]: 637/1269 cut-off events. [2024-06-28 02:53:10,946 INFO L125 PetriNetUnfolderBase]: For 106647/106647 co-relation queries the response was YES. [2024-06-28 02:53:10,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6340 conditions, 1269 events. 637/1269 cut-off events. For 106647/106647 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7757 event pairs, 82 based on Foata normal form. 2/1270 useless extension candidates. Maximal degree in co-relation 6177. Up to 1092 conditions per place. [2024-06-28 02:53:10,961 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 271 selfloop transitions, 44 changer transitions 0/318 dead transitions. [2024-06-28 02:53:10,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 318 transitions, 3184 flow [2024-06-28 02:53:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:10,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:10,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:53:10,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 02:53:10,962 INFO L175 Difference]: Start difference. First operand has 368 places, 304 transitions, 2488 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:53:10,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 318 transitions, 3184 flow [2024-06-28 02:53:11,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 318 transitions, 3015 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 02:53:11,303 INFO L231 Difference]: Finished difference. Result has 369 places, 305 transitions, 2449 flow [2024-06-28 02:53:11,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2449, PETRI_PLACES=369, PETRI_TRANSITIONS=305} [2024-06-28 02:53:11,303 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-28 02:53:11,303 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 305 transitions, 2449 flow [2024-06-28 02:53:11,303 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 02:53:11,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:11,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:11,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 02:53:11,303 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:11,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash 875082352, now seen corresponding path program 14 times [2024-06-28 02:53:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:11,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923154368] [2024-06-28 02:53:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:11,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:12,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:12,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:12,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923154368] [2024-06-28 02:53:12,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923154368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:12,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:12,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:12,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102629135] [2024-06-28 02:53:12,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:12,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:12,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:12,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:12,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:12,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:12,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 305 transitions, 2449 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 02:53:12,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:12,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:12,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:13,266 INFO L124 PetriNetUnfolderBase]: 641/1277 cut-off events. [2024-06-28 02:53:13,266 INFO L125 PetriNetUnfolderBase]: For 108352/108352 co-relation queries the response was YES. [2024-06-28 02:53:13,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6337 conditions, 1277 events. 641/1277 cut-off events. For 108352/108352 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7837 event pairs, 82 based on Foata normal form. 2/1278 useless extension candidates. Maximal degree in co-relation 6173. Up to 1054 conditions per place. [2024-06-28 02:53:13,281 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 259 selfloop transitions, 57 changer transitions 0/319 dead transitions. [2024-06-28 02:53:13,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 319 transitions, 3149 flow [2024-06-28 02:53:13,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:13,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:53:13,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:53:13,282 INFO L175 Difference]: Start difference. First operand has 369 places, 305 transitions, 2449 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:53:13,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 319 transitions, 3149 flow [2024-06-28 02:53:13,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 319 transitions, 3029 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:13,665 INFO L231 Difference]: Finished difference. Result has 371 places, 306 transitions, 2487 flow [2024-06-28 02:53:13,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2487, PETRI_PLACES=371, PETRI_TRANSITIONS=306} [2024-06-28 02:53:13,665 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-06-28 02:53:13,665 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 306 transitions, 2487 flow [2024-06-28 02:53:13,665 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 02:53:13,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:13,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:13,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 02:53:13,666 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:13,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:13,666 INFO L85 PathProgramCache]: Analyzing trace with hash 628915636, now seen corresponding path program 15 times [2024-06-28 02:53:13,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:13,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617215841] [2024-06-28 02:53:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:13,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:15,173 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 02:53:15,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:15,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617215841] [2024-06-28 02:53:15,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617215841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:15,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:15,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:15,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533104213] [2024-06-28 02:53:15,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:15,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:15,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:15,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:15,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:15,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:15,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 306 transitions, 2487 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 02:53:15,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:15,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:15,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:15,887 INFO L124 PetriNetUnfolderBase]: 645/1285 cut-off events. [2024-06-28 02:53:15,887 INFO L125 PetriNetUnfolderBase]: For 110072/110072 co-relation queries the response was YES. [2024-06-28 02:53:15,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6410 conditions, 1285 events. 645/1285 cut-off events. For 110072/110072 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7899 event pairs, 84 based on Foata normal form. 2/1286 useless extension candidates. Maximal degree in co-relation 6245. Up to 1108 conditions per place. [2024-06-28 02:53:15,902 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 273 selfloop transitions, 44 changer transitions 0/320 dead transitions. [2024-06-28 02:53:15,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 320 transitions, 3191 flow [2024-06-28 02:53:15,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:53:15,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:53:15,903 INFO L175 Difference]: Start difference. First operand has 371 places, 306 transitions, 2487 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:53:15,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 320 transitions, 3191 flow [2024-06-28 02:53:16,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 320 transitions, 3043 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:16,274 INFO L231 Difference]: Finished difference. Result has 373 places, 307 transitions, 2473 flow [2024-06-28 02:53:16,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2473, PETRI_PLACES=373, PETRI_TRANSITIONS=307} [2024-06-28 02:53:16,275 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-28 02:53:16,275 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 307 transitions, 2473 flow [2024-06-28 02:53:16,275 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 02:53:16,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:16,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:16,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 02:53:16,275 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:16,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:16,275 INFO L85 PathProgramCache]: Analyzing trace with hash 628910986, now seen corresponding path program 16 times [2024-06-28 02:53:16,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:16,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55303437] [2024-06-28 02:53:16,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:16,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:17,759 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 02:53:17,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:17,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55303437] [2024-06-28 02:53:17,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55303437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:17,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:17,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:17,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148153503] [2024-06-28 02:53:17,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:17,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:17,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:17,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:17,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:17,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 307 transitions, 2473 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 02:53:17,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:17,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:17,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:18,381 INFO L124 PetriNetUnfolderBase]: 649/1293 cut-off events. [2024-06-28 02:53:18,381 INFO L125 PetriNetUnfolderBase]: For 111716/111716 co-relation queries the response was YES. [2024-06-28 02:53:18,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6431 conditions, 1293 events. 649/1293 cut-off events. For 111716/111716 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7982 event pairs, 84 based on Foata normal form. 2/1294 useless extension candidates. Maximal degree in co-relation 6265. Up to 1096 conditions per place. [2024-06-28 02:53:18,395 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 273 selfloop transitions, 46 changer transitions 0/322 dead transitions. [2024-06-28 02:53:18,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 322 transitions, 3185 flow [2024-06-28 02:53:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:53:18,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:53:18,396 INFO L175 Difference]: Start difference. First operand has 373 places, 307 transitions, 2473 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:53:18,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 322 transitions, 3185 flow [2024-06-28 02:53:18,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 322 transitions, 3061 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:18,800 INFO L231 Difference]: Finished difference. Result has 375 places, 308 transitions, 2489 flow [2024-06-28 02:53:18,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2489, PETRI_PLACES=375, PETRI_TRANSITIONS=308} [2024-06-28 02:53:18,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-28 02:53:18,800 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 308 transitions, 2489 flow [2024-06-28 02:53:18,800 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 02:53:18,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:18,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:18,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 02:53:18,800 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:18,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:18,801 INFO L85 PathProgramCache]: Analyzing trace with hash 462677206, now seen corresponding path program 17 times [2024-06-28 02:53:18,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:18,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181785475] [2024-06-28 02:53:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:18,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:20,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:20,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181785475] [2024-06-28 02:53:20,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181785475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:20,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:20,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:20,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794868141] [2024-06-28 02:53:20,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:20,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:20,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:20,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:20,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:20,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:20,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 308 transitions, 2489 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 02:53:20,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:20,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:20,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:20,608 INFO L124 PetriNetUnfolderBase]: 653/1301 cut-off events. [2024-06-28 02:53:20,608 INFO L125 PetriNetUnfolderBase]: For 113541/113541 co-relation queries the response was YES. [2024-06-28 02:53:20,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6488 conditions, 1301 events. 653/1301 cut-off events. For 113541/113541 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8052 event pairs, 86 based on Foata normal form. 2/1302 useless extension candidates. Maximal degree in co-relation 6321. Up to 1133 conditions per place. [2024-06-28 02:53:20,622 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 283 selfloop transitions, 37 changer transitions 0/323 dead transitions. [2024-06-28 02:53:20,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 323 transitions, 3205 flow [2024-06-28 02:53:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 02:53:20,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 02:53:20,623 INFO L175 Difference]: Start difference. First operand has 375 places, 308 transitions, 2489 flow. Second operand 11 states and 129 transitions. [2024-06-28 02:53:20,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 323 transitions, 3205 flow [2024-06-28 02:53:21,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 323 transitions, 3075 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:21,014 INFO L231 Difference]: Finished difference. Result has 377 places, 309 transitions, 2483 flow [2024-06-28 02:53:21,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2483, PETRI_PLACES=377, PETRI_TRANSITIONS=309} [2024-06-28 02:53:21,014 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-28 02:53:21,015 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 309 transitions, 2483 flow [2024-06-28 02:53:21,015 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 02:53:21,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:21,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:21,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 02:53:21,015 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:21,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:21,015 INFO L85 PathProgramCache]: Analyzing trace with hash 874904722, now seen corresponding path program 18 times [2024-06-28 02:53:21,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:21,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064706097] [2024-06-28 02:53:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:21,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:22,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:22,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064706097] [2024-06-28 02:53:22,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064706097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:22,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:22,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:22,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106698145] [2024-06-28 02:53:22,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:22,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:22,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:22,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:22,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:22,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:22,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 309 transitions, 2483 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 02:53:22,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:22,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:22,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:22,828 INFO L124 PetriNetUnfolderBase]: 657/1309 cut-off events. [2024-06-28 02:53:22,828 INFO L125 PetriNetUnfolderBase]: For 115364/115364 co-relation queries the response was YES. [2024-06-28 02:53:22,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6517 conditions, 1309 events. 657/1309 cut-off events. For 115364/115364 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8119 event pairs, 88 based on Foata normal form. 2/1310 useless extension candidates. Maximal degree in co-relation 6349. Up to 1060 conditions per place. [2024-06-28 02:53:22,843 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 261 selfloop transitions, 60 changer transitions 0/324 dead transitions. [2024-06-28 02:53:22,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 324 transitions, 3203 flow [2024-06-28 02:53:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:53:22,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:53:22,844 INFO L175 Difference]: Start difference. First operand has 377 places, 309 transitions, 2483 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:53:22,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 324 transitions, 3203 flow [2024-06-28 02:53:23,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 324 transitions, 3089 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:23,223 INFO L231 Difference]: Finished difference. Result has 379 places, 310 transitions, 2541 flow [2024-06-28 02:53:23,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2541, PETRI_PLACES=379, PETRI_TRANSITIONS=310} [2024-06-28 02:53:23,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-28 02:53:23,224 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 310 transitions, 2541 flow [2024-06-28 02:53:23,224 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 02:53:23,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:23,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:23,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 02:53:23,225 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:23,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:23,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1013067442, now seen corresponding path program 19 times [2024-06-28 02:53:23,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:23,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151929496] [2024-06-28 02:53:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:23,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:24,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:24,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151929496] [2024-06-28 02:53:24,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151929496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:24,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:24,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:24,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936631372] [2024-06-28 02:53:24,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:24,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:24,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:24,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:24,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:24,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:24,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 310 transitions, 2541 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 02:53:24,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:24,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:24,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:24,776 INFO L124 PetriNetUnfolderBase]: 661/1317 cut-off events. [2024-06-28 02:53:24,777 INFO L125 PetriNetUnfolderBase]: For 117361/117361 co-relation queries the response was YES. [2024-06-28 02:53:24,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6616 conditions, 1317 events. 661/1317 cut-off events. For 117361/117361 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8171 event pairs, 88 based on Foata normal form. 2/1318 useless extension candidates. Maximal degree in co-relation 6447. Up to 1144 conditions per place. [2024-06-28 02:53:24,791 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 286 selfloop transitions, 37 changer transitions 0/326 dead transitions. [2024-06-28 02:53:24,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 326 transitions, 3269 flow [2024-06-28 02:53:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:53:24,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 02:53:24,792 INFO L175 Difference]: Start difference. First operand has 379 places, 310 transitions, 2541 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:53:24,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 326 transitions, 3269 flow [2024-06-28 02:53:25,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 326 transitions, 3107 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:25,167 INFO L231 Difference]: Finished difference. Result has 381 places, 311 transitions, 2507 flow [2024-06-28 02:53:25,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2507, PETRI_PLACES=381, PETRI_TRANSITIONS=311} [2024-06-28 02:53:25,167 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-28 02:53:25,168 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 311 transitions, 2507 flow [2024-06-28 02:53:25,168 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 02:53:25,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:25,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:25,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 02:53:25,168 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:25,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:25,168 INFO L85 PathProgramCache]: Analyzing trace with hash 629095560, now seen corresponding path program 5 times [2024-06-28 02:53:25,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:25,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61500398] [2024-06-28 02:53:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:25,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:26,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:26,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61500398] [2024-06-28 02:53:26,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61500398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:26,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:26,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:26,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453069682] [2024-06-28 02:53:26,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:26,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:26,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:26,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:26,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:27,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:27,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 311 transitions, 2507 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:27,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:27,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:27,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:27,684 INFO L124 PetriNetUnfolderBase]: 673/1345 cut-off events. [2024-06-28 02:53:27,684 INFO L125 PetriNetUnfolderBase]: For 172532/172532 co-relation queries the response was YES. [2024-06-28 02:53:27,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6641 conditions, 1345 events. 673/1345 cut-off events. For 172532/172532 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8382 event pairs, 96 based on Foata normal form. 8/1352 useless extension candidates. Maximal degree in co-relation 6471. Up to 1133 conditions per place. [2024-06-28 02:53:27,698 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 275 selfloop transitions, 43 changer transitions 7/328 dead transitions. [2024-06-28 02:53:27,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 328 transitions, 3235 flow [2024-06-28 02:53:27,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 02:53:27,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 02:53:27,699 INFO L175 Difference]: Start difference. First operand has 381 places, 311 transitions, 2507 flow. Second operand 12 states and 147 transitions. [2024-06-28 02:53:27,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 328 transitions, 3235 flow [2024-06-28 02:53:28,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 328 transitions, 3117 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:28,088 INFO L231 Difference]: Finished difference. Result has 384 places, 308 transitions, 2460 flow [2024-06-28 02:53:28,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2460, PETRI_PLACES=384, PETRI_TRANSITIONS=308} [2024-06-28 02:53:28,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-06-28 02:53:28,088 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 308 transitions, 2460 flow [2024-06-28 02:53:28,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:28,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:28,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:28,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 02:53:28,089 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:28,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:28,089 INFO L85 PathProgramCache]: Analyzing trace with hash -835578368, now seen corresponding path program 6 times [2024-06-28 02:53:28,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:28,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118179963] [2024-06-28 02:53:28,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:28,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:29,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:29,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118179963] [2024-06-28 02:53:29,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118179963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:29,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:29,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:29,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899659093] [2024-06-28 02:53:29,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:29,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:29,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:29,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:29,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:29,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:29,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 308 transitions, 2460 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:29,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:29,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:29,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:30,179 INFO L124 PetriNetUnfolderBase]: 668/1342 cut-off events. [2024-06-28 02:53:30,179 INFO L125 PetriNetUnfolderBase]: For 173916/173916 co-relation queries the response was YES. [2024-06-28 02:53:30,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6546 conditions, 1342 events. 668/1342 cut-off events. For 173916/173916 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8348 event pairs, 94 based on Foata normal form. 8/1349 useless extension candidates. Maximal degree in co-relation 6375. Up to 1105 conditions per place. [2024-06-28 02:53:30,194 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 268 selfloop transitions, 45 changer transitions 9/325 dead transitions. [2024-06-28 02:53:30,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 325 transitions, 3182 flow [2024-06-28 02:53:30,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:30,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 02:53:30,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 02:53:30,195 INFO L175 Difference]: Start difference. First operand has 384 places, 308 transitions, 2460 flow. Second operand 12 states and 147 transitions. [2024-06-28 02:53:30,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 325 transitions, 3182 flow [2024-06-28 02:53:30,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 325 transitions, 3090 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:30,650 INFO L231 Difference]: Finished difference. Result has 382 places, 305 transitions, 2442 flow [2024-06-28 02:53:30,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2368, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2442, PETRI_PLACES=382, PETRI_TRANSITIONS=305} [2024-06-28 02:53:30,650 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-28 02:53:30,650 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 305 transitions, 2442 flow [2024-06-28 02:53:30,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:30,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:30,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:30,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 02:53:30,651 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:30,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:30,651 INFO L85 PathProgramCache]: Analyzing trace with hash -835569998, now seen corresponding path program 7 times [2024-06-28 02:53:30,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:30,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191123612] [2024-06-28 02:53:30,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:30,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:32,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:32,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191123612] [2024-06-28 02:53:32,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191123612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:32,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:32,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:32,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100446829] [2024-06-28 02:53:32,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:32,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:32,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:32,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:32,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:32,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:32,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 305 transitions, 2442 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:32,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:32,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:32,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:32,776 INFO L124 PetriNetUnfolderBase]: 681/1375 cut-off events. [2024-06-28 02:53:32,776 INFO L125 PetriNetUnfolderBase]: For 228828/228828 co-relation queries the response was YES. [2024-06-28 02:53:32,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7796 conditions, 1375 events. 681/1375 cut-off events. For 228828/228828 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8626 event pairs, 104 based on Foata normal form. 6/1380 useless extension candidates. Maximal degree in co-relation 7626. Up to 1071 conditions per place. [2024-06-28 02:53:32,791 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 273 selfloop transitions, 42 changer transitions 7/325 dead transitions. [2024-06-28 02:53:32,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 325 transitions, 3480 flow [2024-06-28 02:53:32,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:32,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 02:53:32,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-28 02:53:32,792 INFO L175 Difference]: Start difference. First operand has 382 places, 305 transitions, 2442 flow. Second operand 11 states and 141 transitions. [2024-06-28 02:53:32,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 325 transitions, 3480 flow [2024-06-28 02:53:33,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 325 transitions, 3350 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:33,423 INFO L231 Difference]: Finished difference. Result has 379 places, 302 transitions, 2386 flow [2024-06-28 02:53:33,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2318, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2386, PETRI_PLACES=379, PETRI_TRANSITIONS=302} [2024-06-28 02:53:33,424 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2024-06-28 02:53:33,424 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 302 transitions, 2386 flow [2024-06-28 02:53:33,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:33,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:33,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:33,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 02:53:33,424 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:33,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:33,424 INFO L85 PathProgramCache]: Analyzing trace with hash -835809008, now seen corresponding path program 8 times [2024-06-28 02:53:33,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:33,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924643208] [2024-06-28 02:53:33,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:33,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924643208] [2024-06-28 02:53:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924643208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:35,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:35,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:35,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280916923] [2024-06-28 02:53:35,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:35,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:35,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:35,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:35,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:35,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:35,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 302 transitions, 2386 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:35,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:35,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:35,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:36,099 INFO L124 PetriNetUnfolderBase]: 671/1353 cut-off events. [2024-06-28 02:53:36,099 INFO L125 PetriNetUnfolderBase]: For 231032/231032 co-relation queries the response was YES. [2024-06-28 02:53:36,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7292 conditions, 1353 events. 671/1353 cut-off events. For 231032/231032 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8393 event pairs, 111 based on Foata normal form. 8/1360 useless extension candidates. Maximal degree in co-relation 7123. Up to 1135 conditions per place. [2024-06-28 02:53:36,115 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 265 selfloop transitions, 37 changer transitions 14/319 dead transitions. [2024-06-28 02:53:36,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 319 transitions, 3094 flow [2024-06-28 02:53:36,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:36,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 02:53:36,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-28 02:53:36,116 INFO L175 Difference]: Start difference. First operand has 379 places, 302 transitions, 2386 flow. Second operand 12 states and 145 transitions. [2024-06-28 02:53:36,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 319 transitions, 3094 flow [2024-06-28 02:53:36,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 319 transitions, 3010 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:53:36,566 INFO L231 Difference]: Finished difference. Result has 378 places, 295 transitions, 2330 flow [2024-06-28 02:53:36,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2302, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2330, PETRI_PLACES=378, PETRI_TRANSITIONS=295} [2024-06-28 02:53:36,567 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 348 predicate places. [2024-06-28 02:53:36,567 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 295 transitions, 2330 flow [2024-06-28 02:53:36,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:36,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:36,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:36,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 02:53:36,567 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:36,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:36,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1712533592, now seen corresponding path program 9 times [2024-06-28 02:53:36,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:36,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275721299] [2024-06-28 02:53:36,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:36,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:37,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:37,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275721299] [2024-06-28 02:53:37,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275721299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:37,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:37,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:37,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745246723] [2024-06-28 02:53:37,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:37,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:37,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:37,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:38,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:38,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 295 transitions, 2330 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:38,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:38,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:38,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:38,656 INFO L124 PetriNetUnfolderBase]: 679/1377 cut-off events. [2024-06-28 02:53:38,656 INFO L125 PetriNetUnfolderBase]: For 277923/277923 co-relation queries the response was YES. [2024-06-28 02:53:38,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8480 conditions, 1377 events. 679/1377 cut-off events. For 277923/277923 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8538 event pairs, 115 based on Foata normal form. 6/1382 useless extension candidates. Maximal degree in co-relation 8312. Up to 1032 conditions per place. [2024-06-28 02:53:38,671 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 244 selfloop transitions, 65 changer transitions 6/318 dead transitions. [2024-06-28 02:53:38,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 318 transitions, 3364 flow [2024-06-28 02:53:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 02:53:38,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 02:53:38,672 INFO L175 Difference]: Start difference. First operand has 378 places, 295 transitions, 2330 flow. Second operand 12 states and 153 transitions. [2024-06-28 02:53:38,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 318 transitions, 3364 flow [2024-06-28 02:53:39,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 318 transitions, 3265 flow, removed 11 selfloop flow, removed 14 redundant places. [2024-06-28 02:53:39,391 INFO L231 Difference]: Finished difference. Result has 369 places, 295 transitions, 2372 flow [2024-06-28 02:53:39,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2372, PETRI_PLACES=369, PETRI_TRANSITIONS=295} [2024-06-28 02:53:39,391 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-28 02:53:39,391 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 295 transitions, 2372 flow [2024-06-28 02:53:39,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:39,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:39,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 02:53:39,392 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:39,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:39,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1712541962, now seen corresponding path program 10 times [2024-06-28 02:53:39,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:39,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398423278] [2024-06-28 02:53:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:40,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:40,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398423278] [2024-06-28 02:53:40,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398423278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:40,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:40,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:40,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107168780] [2024-06-28 02:53:40,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:40,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:40,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:40,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:40,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:40,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:40,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 295 transitions, 2372 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:40,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:40,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:40,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:41,525 INFO L124 PetriNetUnfolderBase]: 655/1321 cut-off events. [2024-06-28 02:53:41,525 INFO L125 PetriNetUnfolderBase]: For 213614/213614 co-relation queries the response was YES. [2024-06-28 02:53:41,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7142 conditions, 1321 events. 655/1321 cut-off events. For 213614/213614 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8148 event pairs, 109 based on Foata normal form. 8/1328 useless extension candidates. Maximal degree in co-relation 6979. Up to 1053 conditions per place. [2024-06-28 02:53:41,539 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 237 selfloop transitions, 61 changer transitions 11/312 dead transitions. [2024-06-28 02:53:41,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 312 transitions, 3066 flow [2024-06-28 02:53:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 02:53:41,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 02:53:41,540 INFO L175 Difference]: Start difference. First operand has 369 places, 295 transitions, 2372 flow. Second operand 12 states and 147 transitions. [2024-06-28 02:53:41,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 312 transitions, 3066 flow [2024-06-28 02:53:41,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 312 transitions, 2894 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:41,986 INFO L231 Difference]: Finished difference. Result has 368 places, 291 transitions, 2292 flow [2024-06-28 02:53:41,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2292, PETRI_PLACES=368, PETRI_TRANSITIONS=291} [2024-06-28 02:53:41,987 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-06-28 02:53:41,987 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 291 transitions, 2292 flow [2024-06-28 02:53:41,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:41,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:41,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:41,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 02:53:41,988 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:41,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:41,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1720816172, now seen corresponding path program 11 times [2024-06-28 02:53:41,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:41,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185493998] [2024-06-28 02:53:41,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:41,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:43,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:43,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185493998] [2024-06-28 02:53:43,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185493998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:43,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:43,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:43,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122904378] [2024-06-28 02:53:43,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:43,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:43,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:43,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:43,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:43,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:43,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 291 transitions, 2292 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:43,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:43,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:43,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:44,292 INFO L124 PetriNetUnfolderBase]: 649/1309 cut-off events. [2024-06-28 02:53:44,292 INFO L125 PetriNetUnfolderBase]: For 214723/214723 co-relation queries the response was YES. [2024-06-28 02:53:44,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7010 conditions, 1309 events. 649/1309 cut-off events. For 214723/214723 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8065 event pairs, 109 based on Foata normal form. 8/1316 useless extension candidates. Maximal degree in co-relation 6850. Up to 1039 conditions per place. [2024-06-28 02:53:44,305 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 241 selfloop transitions, 54 changer transitions 9/307 dead transitions. [2024-06-28 02:53:44,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 307 transitions, 2974 flow [2024-06-28 02:53:44,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 02:53:44,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 02:53:44,306 INFO L175 Difference]: Start difference. First operand has 368 places, 291 transitions, 2292 flow. Second operand 11 states and 140 transitions. [2024-06-28 02:53:44,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 307 transitions, 2974 flow [2024-06-28 02:53:44,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 307 transitions, 2825 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 02:53:44,699 INFO L231 Difference]: Finished difference. Result has 363 places, 285 transitions, 2212 flow [2024-06-28 02:53:44,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2212, PETRI_PLACES=363, PETRI_TRANSITIONS=285} [2024-06-28 02:53:44,700 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-28 02:53:44,700 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 285 transitions, 2212 flow [2024-06-28 02:53:44,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:44,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:44,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:44,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 02:53:44,700 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:44,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:44,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1948717322, now seen corresponding path program 12 times [2024-06-28 02:53:44,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:44,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587355978] [2024-06-28 02:53:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:44,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:46,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:46,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587355978] [2024-06-28 02:53:46,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587355978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:46,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:46,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:46,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708156884] [2024-06-28 02:53:46,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:46,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:46,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:46,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:46,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:46,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:46,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 285 transitions, 2212 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:46,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:46,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:46,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:47,261 INFO L124 PetriNetUnfolderBase]: 639/1297 cut-off events. [2024-06-28 02:53:47,261 INFO L125 PetriNetUnfolderBase]: For 214610/214610 co-relation queries the response was YES. [2024-06-28 02:53:47,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 1297 events. 639/1297 cut-off events. For 214610/214610 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7997 event pairs, 111 based on Foata normal form. 8/1304 useless extension candidates. Maximal degree in co-relation 6733. Up to 1047 conditions per place. [2024-06-28 02:53:47,273 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 241 selfloop transitions, 51 changer transitions 7/302 dead transitions. [2024-06-28 02:53:47,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 302 transitions, 2886 flow [2024-06-28 02:53:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:47,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:47,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 02:53:47,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 02:53:47,274 INFO L175 Difference]: Start difference. First operand has 363 places, 285 transitions, 2212 flow. Second operand 12 states and 148 transitions. [2024-06-28 02:53:47,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 302 transitions, 2886 flow [2024-06-28 02:53:47,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 302 transitions, 2748 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-28 02:53:47,647 INFO L231 Difference]: Finished difference. Result has 359 places, 282 transitions, 2163 flow [2024-06-28 02:53:47,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2163, PETRI_PLACES=359, PETRI_TRANSITIONS=282} [2024-06-28 02:53:47,647 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-28 02:53:47,647 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 282 transitions, 2163 flow [2024-06-28 02:53:47,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:47,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:47,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:47,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 02:53:47,647 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:47,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:47,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1720577162, now seen corresponding path program 13 times [2024-06-28 02:53:47,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:47,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141671240] [2024-06-28 02:53:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:47,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:48,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:48,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141671240] [2024-06-28 02:53:48,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141671240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:48,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:48,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:48,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926774622] [2024-06-28 02:53:48,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:48,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:48,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:48,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:48,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:48,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:48,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 282 transitions, 2163 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:48,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:48,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:48,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:49,381 INFO L124 PetriNetUnfolderBase]: 645/1319 cut-off events. [2024-06-28 02:53:49,382 INFO L125 PetriNetUnfolderBase]: For 242686/242686 co-relation queries the response was YES. [2024-06-28 02:53:49,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7664 conditions, 1319 events. 645/1319 cut-off events. For 242686/242686 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8129 event pairs, 120 based on Foata normal form. 6/1324 useless extension candidates. Maximal degree in co-relation 7507. Up to 1021 conditions per place. [2024-06-28 02:53:49,392 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 242 selfloop transitions, 49 changer transitions 7/301 dead transitions. [2024-06-28 02:53:49,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 301 transitions, 3103 flow [2024-06-28 02:53:49,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 02:53:49,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-28 02:53:49,393 INFO L175 Difference]: Start difference. First operand has 359 places, 282 transitions, 2163 flow. Second operand 11 states and 142 transitions. [2024-06-28 02:53:49,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 301 transitions, 3103 flow [2024-06-28 02:53:50,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 301 transitions, 2991 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:50,012 INFO L231 Difference]: Finished difference. Result has 356 places, 279 transitions, 2139 flow [2024-06-28 02:53:50,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2139, PETRI_PLACES=356, PETRI_TRANSITIONS=279} [2024-06-28 02:53:50,013 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 02:53:50,013 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 279 transitions, 2139 flow [2024-06-28 02:53:50,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:50,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:50,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:50,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 02:53:50,013 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:50,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:50,013 INFO L85 PathProgramCache]: Analyzing trace with hash 881584416, now seen corresponding path program 14 times [2024-06-28 02:53:50,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:50,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132606676] [2024-06-28 02:53:50,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:50,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:51,506 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 02:53:51,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:51,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132606676] [2024-06-28 02:53:51,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132606676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:51,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:51,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:51,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954253637] [2024-06-28 02:53:51,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:51,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:51,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:51,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:51,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:51,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:51,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 279 transitions, 2139 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:51,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:51,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:51,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:52,224 INFO L124 PetriNetUnfolderBase]: 660/1352 cut-off events. [2024-06-28 02:53:52,224 INFO L125 PetriNetUnfolderBase]: For 304995/304995 co-relation queries the response was YES. [2024-06-28 02:53:52,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8845 conditions, 1352 events. 660/1352 cut-off events. For 304995/304995 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8390 event pairs, 132 based on Foata normal form. 6/1357 useless extension candidates. Maximal degree in co-relation 8689. Up to 1053 conditions per place. [2024-06-28 02:53:52,238 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 242 selfloop transitions, 48 changer transitions 7/300 dead transitions. [2024-06-28 02:53:52,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 300 transitions, 3111 flow [2024-06-28 02:53:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:52,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:52,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 02:53:52,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 02:53:52,239 INFO L175 Difference]: Start difference. First operand has 356 places, 279 transitions, 2139 flow. Second operand 12 states and 150 transitions. [2024-06-28 02:53:52,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 300 transitions, 3111 flow [2024-06-28 02:53:52,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 300 transitions, 3006 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 02:53:52,982 INFO L231 Difference]: Finished difference. Result has 355 places, 276 transitions, 2120 flow [2024-06-28 02:53:52,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2120, PETRI_PLACES=355, PETRI_TRANSITIONS=276} [2024-06-28 02:53:52,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-28 02:53:52,983 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 276 transitions, 2120 flow [2024-06-28 02:53:52,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:52,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:52,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:52,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 02:53:52,984 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:52,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1111561326, now seen corresponding path program 15 times [2024-06-28 02:53:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:52,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720440677] [2024-06-28 02:53:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:52,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:54,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:54,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720440677] [2024-06-28 02:53:54,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720440677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:54,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:54,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:54,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055742608] [2024-06-28 02:53:54,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:54,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:54,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:54,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:54,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:54,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:54,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 276 transitions, 2120 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:54,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:54,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:54,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:55,086 INFO L124 PetriNetUnfolderBase]: 668/1368 cut-off events. [2024-06-28 02:53:55,086 INFO L125 PetriNetUnfolderBase]: For 353720/353720 co-relation queries the response was YES. [2024-06-28 02:53:55,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9634 conditions, 1368 events. 668/1368 cut-off events. For 353720/353720 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8472 event pairs, 141 based on Foata normal form. 6/1373 useless extension candidates. Maximal degree in co-relation 9479. Up to 926 conditions per place. [2024-06-28 02:53:55,101 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 238 selfloop transitions, 47 changer transitions 10/298 dead transitions. [2024-06-28 02:53:55,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 298 transitions, 3088 flow [2024-06-28 02:53:55,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 02:53:55,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 02:53:55,102 INFO L175 Difference]: Start difference. First operand has 355 places, 276 transitions, 2120 flow. Second operand 12 states and 150 transitions. [2024-06-28 02:53:55,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 298 transitions, 3088 flow [2024-06-28 02:53:55,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 298 transitions, 2986 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:53:55,935 INFO L231 Difference]: Finished difference. Result has 353 places, 272 transitions, 2095 flow [2024-06-28 02:53:55,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2095, PETRI_PLACES=353, PETRI_TRANSITIONS=272} [2024-06-28 02:53:55,935 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2024-06-28 02:53:55,935 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 272 transitions, 2095 flow [2024-06-28 02:53:55,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:55,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:55,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:55,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 02:53:55,936 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:55,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:55,936 INFO L85 PathProgramCache]: Analyzing trace with hash 881345406, now seen corresponding path program 16 times [2024-06-28 02:53:55,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:55,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158525150] [2024-06-28 02:53:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:55,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:57,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:57,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158525150] [2024-06-28 02:53:57,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158525150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:57,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:57,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:57,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275928683] [2024-06-28 02:53:57,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:57,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:57,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:57,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:57,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:57,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:53:57,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 272 transitions, 2095 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:57,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:57,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:53:57,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:58,183 INFO L124 PetriNetUnfolderBase]: 647/1325 cut-off events. [2024-06-28 02:53:58,183 INFO L125 PetriNetUnfolderBase]: For 350693/350693 co-relation queries the response was YES. [2024-06-28 02:53:58,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8371 conditions, 1325 events. 647/1325 cut-off events. For 350693/350693 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8120 event pairs, 139 based on Foata normal form. 14/1338 useless extension candidates. Maximal degree in co-relation 8217. Up to 1055 conditions per place. [2024-06-28 02:53:58,197 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 230 selfloop transitions, 42 changer transitions 14/289 dead transitions. [2024-06-28 02:53:58,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 289 transitions, 2743 flow [2024-06-28 02:53:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 02:53:58,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 02:53:58,198 INFO L175 Difference]: Start difference. First operand has 353 places, 272 transitions, 2095 flow. Second operand 12 states and 146 transitions. [2024-06-28 02:53:58,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 289 transitions, 2743 flow [2024-06-28 02:53:59,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 289 transitions, 2647 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:59,100 INFO L231 Difference]: Finished difference. Result has 348 places, 265 transitions, 2040 flow [2024-06-28 02:53:59,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2040, PETRI_PLACES=348, PETRI_TRANSITIONS=265} [2024-06-28 02:53:59,101 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-28 02:53:59,101 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 265 transitions, 2040 flow [2024-06-28 02:53:59,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:59,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:59,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:59,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 02:53:59,102 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:59,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:59,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1629795386, now seen corresponding path program 20 times [2024-06-28 02:53:59,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:59,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624537309] [2024-06-28 02:53:59,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:59,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:00,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:00,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624537309] [2024-06-28 02:54:00,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624537309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:00,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:00,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:00,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527068468] [2024-06-28 02:54:00,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:00,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:00,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:00,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:00,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:00,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:00,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 265 transitions, 2040 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 02:54:00,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:00,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:00,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:00,868 INFO L124 PetriNetUnfolderBase]: 648/1326 cut-off events. [2024-06-28 02:54:00,868 INFO L125 PetriNetUnfolderBase]: For 343129/343129 co-relation queries the response was YES. [2024-06-28 02:54:00,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9406 conditions, 1326 events. 648/1326 cut-off events. For 343129/343129 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8059 event pairs, 151 based on Foata normal form. 8/1333 useless extension candidates. Maximal degree in co-relation 9255. Up to 1056 conditions per place. [2024-06-28 02:54:00,882 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 236 selfloop transitions, 38 changer transitions 10/287 dead transitions. [2024-06-28 02:54:00,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 287 transitions, 3042 flow [2024-06-28 02:54:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 02:54:00,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 02:54:00,882 INFO L175 Difference]: Start difference. First operand has 348 places, 265 transitions, 2040 flow. Second operand 11 states and 138 transitions. [2024-06-28 02:54:00,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 287 transitions, 3042 flow [2024-06-28 02:54:01,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 287 transitions, 2932 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-28 02:54:01,883 INFO L231 Difference]: Finished difference. Result has 339 places, 263 transitions, 2013 flow [2024-06-28 02:54:01,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2013, PETRI_PLACES=339, PETRI_TRANSITIONS=263} [2024-06-28 02:54:01,883 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-28 02:54:01,883 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 263 transitions, 2013 flow [2024-06-28 02:54:01,883 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 02:54:01,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:01,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:01,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 02:54:01,884 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:01,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1625149106, now seen corresponding path program 21 times [2024-06-28 02:54:01,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:01,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226417431] [2024-06-28 02:54:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:01,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:02,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:02,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226417431] [2024-06-28 02:54:02,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226417431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:02,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:02,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:02,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525237148] [2024-06-28 02:54:02,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:02,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:02,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:02,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:02,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:03,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:03,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 263 transitions, 2013 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 02:54:03,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:03,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:03,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:03,490 INFO L124 PetriNetUnfolderBase]: 617/1265 cut-off events. [2024-06-28 02:54:03,490 INFO L125 PetriNetUnfolderBase]: For 267460/267460 co-relation queries the response was YES. [2024-06-28 02:54:03,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8652 conditions, 1265 events. 617/1265 cut-off events. For 267460/267460 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7600 event pairs, 142 based on Foata normal form. 2/1266 useless extension candidates. Maximal degree in co-relation 8504. Up to 1096 conditions per place. [2024-06-28 02:54:03,504 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 232 selfloop transitions, 40 changer transitions 1/276 dead transitions. [2024-06-28 02:54:03,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 276 transitions, 2630 flow [2024-06-28 02:54:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:03,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:03,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:54:03,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 02:54:03,505 INFO L175 Difference]: Start difference. First operand has 339 places, 263 transitions, 2013 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:54:03,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 276 transitions, 2630 flow [2024-06-28 02:54:04,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 276 transitions, 2545 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:04,327 INFO L231 Difference]: Finished difference. Result has 340 places, 264 transitions, 2060 flow [2024-06-28 02:54:04,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2060, PETRI_PLACES=340, PETRI_TRANSITIONS=264} [2024-06-28 02:54:04,327 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-28 02:54:04,327 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 264 transitions, 2060 flow [2024-06-28 02:54:04,328 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 02:54:04,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:04,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:04,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 02:54:04,328 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:04,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash 376231334, now seen corresponding path program 22 times [2024-06-28 02:54:04,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:04,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427536856] [2024-06-28 02:54:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:04,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:05,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427536856] [2024-06-28 02:54:05,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427536856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:05,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:05,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:05,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247033143] [2024-06-28 02:54:05,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:05,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:05,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:05,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:05,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:05,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 264 transitions, 2060 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 02:54:05,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:05,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:05,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:05,911 INFO L124 PetriNetUnfolderBase]: 632/1294 cut-off events. [2024-06-28 02:54:05,911 INFO L125 PetriNetUnfolderBase]: For 319512/319512 co-relation queries the response was YES. [2024-06-28 02:54:05,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8844 conditions, 1294 events. 632/1294 cut-off events. For 319512/319512 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7833 event pairs, 148 based on Foata normal form. 10/1303 useless extension candidates. Maximal degree in co-relation 8696. Up to 860 conditions per place. [2024-06-28 02:54:05,922 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 158 selfloop transitions, 112 changer transitions 6/279 dead transitions. [2024-06-28 02:54:05,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 279 transitions, 2724 flow [2024-06-28 02:54:05,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 02:54:05,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-28 02:54:05,923 INFO L175 Difference]: Start difference. First operand has 340 places, 264 transitions, 2060 flow. Second operand 11 states and 147 transitions. [2024-06-28 02:54:05,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 279 transitions, 2724 flow [2024-06-28 02:54:06,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 279 transitions, 2602 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:06,871 INFO L231 Difference]: Finished difference. Result has 341 places, 262 transitions, 2193 flow [2024-06-28 02:54:06,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2193, PETRI_PLACES=341, PETRI_TRANSITIONS=262} [2024-06-28 02:54:06,871 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-28 02:54:06,871 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 262 transitions, 2193 flow [2024-06-28 02:54:06,871 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 02:54:06,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:06,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:06,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 02:54:06,872 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:06,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:06,872 INFO L85 PathProgramCache]: Analyzing trace with hash 7661750, now seen corresponding path program 23 times [2024-06-28 02:54:06,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:06,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617999912] [2024-06-28 02:54:06,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:06,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:07,981 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 02:54:07,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:07,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617999912] [2024-06-28 02:54:07,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617999912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:07,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:07,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:07,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733381911] [2024-06-28 02:54:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:07,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:07,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:07,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:07,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:08,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:08,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 262 transitions, 2193 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 02:54:08,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:08,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:08,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:08,523 INFO L124 PetriNetUnfolderBase]: 627/1285 cut-off events. [2024-06-28 02:54:08,523 INFO L125 PetriNetUnfolderBase]: For 310655/310655 co-relation queries the response was YES. [2024-06-28 02:54:08,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8944 conditions, 1285 events. 627/1285 cut-off events. For 310655/310655 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7762 event pairs, 140 based on Foata normal form. 8/1292 useless extension candidates. Maximal degree in co-relation 8796. Up to 1088 conditions per place. [2024-06-28 02:54:08,535 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 227 selfloop transitions, 36 changer transitions 12/278 dead transitions. [2024-06-28 02:54:08,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 278 transitions, 2827 flow [2024-06-28 02:54:08,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:08,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:54:08,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 02:54:08,536 INFO L175 Difference]: Start difference. First operand has 341 places, 262 transitions, 2193 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:54:08,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 278 transitions, 2827 flow [2024-06-28 02:54:09,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 278 transitions, 2560 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:09,433 INFO L231 Difference]: Finished difference. Result has 342 places, 259 transitions, 1985 flow [2024-06-28 02:54:09,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1985, PETRI_PLACES=342, PETRI_TRANSITIONS=259} [2024-06-28 02:54:09,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-28 02:54:09,433 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 259 transitions, 1985 flow [2024-06-28 02:54:09,433 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 02:54:09,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:09,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:09,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 02:54:09,434 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:09,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:09,434 INFO L85 PathProgramCache]: Analyzing trace with hash 178657130, now seen corresponding path program 24 times [2024-06-28 02:54:09,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:09,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980942197] [2024-06-28 02:54:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:09,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:10,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:10,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980942197] [2024-06-28 02:54:10,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980942197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:10,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:10,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:10,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364617279] [2024-06-28 02:54:10,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:10,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:10,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:10,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:10,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:10,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 259 transitions, 1985 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 02:54:10,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:10,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:10,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:11,164 INFO L124 PetriNetUnfolderBase]: 609/1247 cut-off events. [2024-06-28 02:54:11,165 INFO L125 PetriNetUnfolderBase]: For 274012/274012 co-relation queries the response was YES. [2024-06-28 02:54:11,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8637 conditions, 1247 events. 609/1247 cut-off events. For 274012/274012 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7511 event pairs, 140 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 8488. Up to 1069 conditions per place. [2024-06-28 02:54:11,177 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 222 selfloop transitions, 46 changer transitions 0/271 dead transitions. [2024-06-28 02:54:11,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 271 transitions, 2591 flow [2024-06-28 02:54:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:54:11,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:54:11,178 INFO L175 Difference]: Start difference. First operand has 342 places, 259 transitions, 1985 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:54:11,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 271 transitions, 2591 flow [2024-06-28 02:54:11,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 271 transitions, 2513 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:11,911 INFO L231 Difference]: Finished difference. Result has 338 places, 260 transitions, 2051 flow [2024-06-28 02:54:11,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2051, PETRI_PLACES=338, PETRI_TRANSITIONS=260} [2024-06-28 02:54:11,911 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 308 predicate places. [2024-06-28 02:54:11,911 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 260 transitions, 2051 flow [2024-06-28 02:54:11,911 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 02:54:11,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:11,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:11,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 02:54:11,911 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:11,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:11,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2123712694, now seen corresponding path program 25 times [2024-06-28 02:54:11,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:11,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729459782] [2024-06-28 02:54:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:11,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:13,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:13,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729459782] [2024-06-28 02:54:13,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729459782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:13,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:13,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:13,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52157214] [2024-06-28 02:54:13,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:13,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:13,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:13,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:13,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:13,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 260 transitions, 2051 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 02:54:13,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:13,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:13,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:13,690 INFO L124 PetriNetUnfolderBase]: 613/1255 cut-off events. [2024-06-28 02:54:13,690 INFO L125 PetriNetUnfolderBase]: For 266478/266478 co-relation queries the response was YES. [2024-06-28 02:54:13,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8707 conditions, 1255 events. 613/1255 cut-off events. For 266478/266478 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7548 event pairs, 140 based on Foata normal form. 2/1256 useless extension candidates. Maximal degree in co-relation 8560. Up to 1050 conditions per place. [2024-06-28 02:54:13,700 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 209 selfloop transitions, 60 changer transitions 0/272 dead transitions. [2024-06-28 02:54:13,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 272 transitions, 2661 flow [2024-06-28 02:54:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:54:13,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:54:13,701 INFO L175 Difference]: Start difference. First operand has 338 places, 260 transitions, 2051 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:54:13,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 272 transitions, 2661 flow [2024-06-28 02:54:14,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 272 transitions, 2527 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:14,503 INFO L231 Difference]: Finished difference. Result has 340 places, 261 transitions, 2091 flow [2024-06-28 02:54:14,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2091, PETRI_PLACES=340, PETRI_TRANSITIONS=261} [2024-06-28 02:54:14,503 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-28 02:54:14,503 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 261 transitions, 2091 flow [2024-06-28 02:54:14,504 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 02:54:14,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:14,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:14,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 02:54:14,504 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:14,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1902067654, now seen corresponding path program 26 times [2024-06-28 02:54:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:14,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30482727] [2024-06-28 02:54:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:14,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:15,635 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 02:54:15,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:15,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30482727] [2024-06-28 02:54:15,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30482727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:15,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:15,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:15,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035425953] [2024-06-28 02:54:15,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:15,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:15,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:15,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:15,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:15,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:15,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 261 transitions, 2091 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 02:54:15,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:15,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:15,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:16,207 INFO L124 PetriNetUnfolderBase]: 617/1267 cut-off events. [2024-06-28 02:54:16,207 INFO L125 PetriNetUnfolderBase]: For 271071/271071 co-relation queries the response was YES. [2024-06-28 02:54:16,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8810 conditions, 1267 events. 617/1267 cut-off events. For 271071/271071 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7649 event pairs, 142 based on Foata normal form. 2/1268 useless extension candidates. Maximal degree in co-relation 8662. Up to 1058 conditions per place. [2024-06-28 02:54:16,219 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 213 selfloop transitions, 57 changer transitions 0/273 dead transitions. [2024-06-28 02:54:16,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 273 transitions, 2705 flow [2024-06-28 02:54:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:16,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:54:16,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:54:16,220 INFO L175 Difference]: Start difference. First operand has 340 places, 261 transitions, 2091 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:54:16,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 273 transitions, 2705 flow [2024-06-28 02:54:17,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 273 transitions, 2527 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:17,025 INFO L231 Difference]: Finished difference. Result has 341 places, 262 transitions, 2083 flow [2024-06-28 02:54:17,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2083, PETRI_PLACES=341, PETRI_TRANSITIONS=262} [2024-06-28 02:54:17,025 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-28 02:54:17,026 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 262 transitions, 2083 flow [2024-06-28 02:54:17,026 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 02:54:17,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:17,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:17,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 02:54:17,026 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:17,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash 154586294, now seen corresponding path program 27 times [2024-06-28 02:54:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:17,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635401818] [2024-06-28 02:54:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:18,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:18,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635401818] [2024-06-28 02:54:18,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635401818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:18,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:18,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:18,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930707335] [2024-06-28 02:54:18,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:18,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:18,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:18,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:18,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:18,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:18,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 262 transitions, 2083 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 02:54:18,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:18,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:18,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:18,627 INFO L124 PetriNetUnfolderBase]: 633/1303 cut-off events. [2024-06-28 02:54:18,627 INFO L125 PetriNetUnfolderBase]: For 335394/335394 co-relation queries the response was YES. [2024-06-28 02:54:18,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8999 conditions, 1303 events. 633/1303 cut-off events. For 335394/335394 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7932 event pairs, 146 based on Foata normal form. 10/1312 useless extension candidates. Maximal degree in co-relation 8850. Up to 870 conditions per place. [2024-06-28 02:54:18,641 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 112 changer transitions 6/277 dead transitions. [2024-06-28 02:54:18,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 277 transitions, 2751 flow [2024-06-28 02:54:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 02:54:18,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-28 02:54:18,642 INFO L175 Difference]: Start difference. First operand has 341 places, 262 transitions, 2083 flow. Second operand 11 states and 145 transitions. [2024-06-28 02:54:18,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 277 transitions, 2751 flow [2024-06-28 02:54:19,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 277 transitions, 2591 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:19,528 INFO L231 Difference]: Finished difference. Result has 343 places, 260 transitions, 2186 flow [2024-06-28 02:54:19,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2186, PETRI_PLACES=343, PETRI_TRANSITIONS=260} [2024-06-28 02:54:19,529 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-28 02:54:19,529 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 260 transitions, 2186 flow [2024-06-28 02:54:19,529 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 02:54:19,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:19,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:19,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 02:54:19,529 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:19,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:19,529 INFO L85 PathProgramCache]: Analyzing trace with hash 148330184, now seen corresponding path program 28 times [2024-06-28 02:54:19,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:19,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991691832] [2024-06-28 02:54:19,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:19,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:20,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:20,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991691832] [2024-06-28 02:54:20,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991691832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:20,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:20,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:20,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073656535] [2024-06-28 02:54:20,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:20,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:20,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:20,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:20,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:20,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:20,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 260 transitions, 2186 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 02:54:20,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:20,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:20,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:21,130 INFO L124 PetriNetUnfolderBase]: 620/1270 cut-off events. [2024-06-28 02:54:21,130 INFO L125 PetriNetUnfolderBase]: For 280521/280521 co-relation queries the response was YES. [2024-06-28 02:54:21,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9014 conditions, 1270 events. 620/1270 cut-off events. For 280521/280521 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7671 event pairs, 142 based on Foata normal form. 2/1271 useless extension candidates. Maximal degree in co-relation 8864. Up to 878 conditions per place. [2024-06-28 02:54:21,143 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 149 selfloop transitions, 120 changer transitions 0/272 dead transitions. [2024-06-28 02:54:21,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 272 transitions, 2802 flow [2024-06-28 02:54:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:21,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 02:54:21,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-28 02:54:21,144 INFO L175 Difference]: Start difference. First operand has 343 places, 260 transitions, 2186 flow. Second operand 11 states and 141 transitions. [2024-06-28 02:54:21,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 272 transitions, 2802 flow [2024-06-28 02:54:22,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 272 transitions, 2527 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:22,135 INFO L231 Difference]: Finished difference. Result has 344 places, 261 transitions, 2211 flow [2024-06-28 02:54:22,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1911, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2211, PETRI_PLACES=344, PETRI_TRANSITIONS=261} [2024-06-28 02:54:22,135 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-28 02:54:22,135 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 261 transitions, 2211 flow [2024-06-28 02:54:22,135 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 02:54:22,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:22,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:22,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 02:54:22,136 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:22,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash 178479500, now seen corresponding path program 29 times [2024-06-28 02:54:22,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:22,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647604287] [2024-06-28 02:54:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:22,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:23,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:23,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647604287] [2024-06-28 02:54:23,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647604287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:23,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:23,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:23,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056375627] [2024-06-28 02:54:23,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:23,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:23,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:23,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:23,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:23,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:23,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 261 transitions, 2211 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 02:54:23,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:23,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:23,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:23,850 INFO L124 PetriNetUnfolderBase]: 631/1291 cut-off events. [2024-06-28 02:54:23,851 INFO L125 PetriNetUnfolderBase]: For 302380/302380 co-relation queries the response was YES. [2024-06-28 02:54:23,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9537 conditions, 1291 events. 631/1291 cut-off events. For 302380/302380 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7836 event pairs, 141 based on Foata normal form. 2/1292 useless extension candidates. Maximal degree in co-relation 9386. Up to 1092 conditions per place. [2024-06-28 02:54:23,862 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 225 selfloop transitions, 48 changer transitions 0/276 dead transitions. [2024-06-28 02:54:23,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 276 transitions, 3147 flow [2024-06-28 02:54:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:54:23,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:54:23,863 INFO L175 Difference]: Start difference. First operand has 344 places, 261 transitions, 2211 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:54:23,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 276 transitions, 3147 flow [2024-06-28 02:54:24,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 276 transitions, 2857 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:24,852 INFO L231 Difference]: Finished difference. Result has 346 places, 263 transitions, 2135 flow [2024-06-28 02:54:24,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2135, PETRI_PLACES=346, PETRI_TRANSITIONS=263} [2024-06-28 02:54:24,852 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-28 02:54:24,852 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 263 transitions, 2135 flow [2024-06-28 02:54:24,852 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 02:54:24,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:24,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:24,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 02:54:24,853 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:24,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:24,853 INFO L85 PathProgramCache]: Analyzing trace with hash 184913240, now seen corresponding path program 30 times [2024-06-28 02:54:24,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:24,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866573929] [2024-06-28 02:54:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:24,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:25,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:25,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866573929] [2024-06-28 02:54:25,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866573929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:25,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:25,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:25,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021255684] [2024-06-28 02:54:25,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:25,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:25,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:25,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:25,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:26,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:26,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 263 transitions, 2135 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 02:54:26,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:26,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:26,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:26,522 INFO L124 PetriNetUnfolderBase]: 628/1290 cut-off events. [2024-06-28 02:54:26,522 INFO L125 PetriNetUnfolderBase]: For 289719/289719 co-relation queries the response was YES. [2024-06-28 02:54:26,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9032 conditions, 1290 events. 628/1290 cut-off events. For 289719/289719 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7835 event pairs, 146 based on Foata normal form. 2/1291 useless extension candidates. Maximal degree in co-relation 8880. Up to 1110 conditions per place. [2024-06-28 02:54:26,536 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 224 selfloop transitions, 47 changer transitions 0/274 dead transitions. [2024-06-28 02:54:26,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 274 transitions, 2701 flow [2024-06-28 02:54:26,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:26,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:54:26,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 02:54:26,538 INFO L175 Difference]: Start difference. First operand has 346 places, 263 transitions, 2135 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:54:26,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 274 transitions, 2701 flow [2024-06-28 02:54:27,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 274 transitions, 2538 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 02:54:27,449 INFO L231 Difference]: Finished difference. Result has 350 places, 263 transitions, 2070 flow [2024-06-28 02:54:27,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1972, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2070, PETRI_PLACES=350, PETRI_TRANSITIONS=263} [2024-06-28 02:54:27,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-28 02:54:27,449 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 263 transitions, 2070 flow [2024-06-28 02:54:27,449 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 02:54:27,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:27,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:27,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 02:54:27,450 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:27,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:27,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1739459556, now seen corresponding path program 31 times [2024-06-28 02:54:27,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:27,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70354851] [2024-06-28 02:54:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:27,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:28,784 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 02:54:28,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:28,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70354851] [2024-06-28 02:54:28,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70354851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:28,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:28,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:28,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988257154] [2024-06-28 02:54:28,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:28,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:28,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:28,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:28,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:28,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:28,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 263 transitions, 2070 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 02:54:28,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:28,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:28,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:29,382 INFO L124 PetriNetUnfolderBase]: 639/1311 cut-off events. [2024-06-28 02:54:29,382 INFO L125 PetriNetUnfolderBase]: For 310621/310621 co-relation queries the response was YES. [2024-06-28 02:54:29,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9507 conditions, 1311 events. 639/1311 cut-off events. For 310621/310621 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7994 event pairs, 145 based on Foata normal form. 2/1312 useless extension candidates. Maximal degree in co-relation 9353. Up to 971 conditions per place. [2024-06-28 02:54:29,397 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 187 selfloop transitions, 88 changer transitions 0/278 dead transitions. [2024-06-28 02:54:29,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 278 transitions, 3018 flow [2024-06-28 02:54:29,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 02:54:29,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 02:54:29,398 INFO L175 Difference]: Start difference. First operand has 350 places, 263 transitions, 2070 flow. Second operand 11 states and 138 transitions. [2024-06-28 02:54:29,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 278 transitions, 3018 flow [2024-06-28 02:54:30,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 278 transitions, 2918 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:30,387 INFO L231 Difference]: Finished difference. Result has 351 places, 265 transitions, 2268 flow [2024-06-28 02:54:30,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2268, PETRI_PLACES=351, PETRI_TRANSITIONS=265} [2024-06-28 02:54:30,387 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 321 predicate places. [2024-06-28 02:54:30,387 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 265 transitions, 2268 flow [2024-06-28 02:54:30,387 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 02:54:30,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:30,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:30,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 02:54:30,387 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:30,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1886654646, now seen corresponding path program 32 times [2024-06-28 02:54:30,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:30,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502567025] [2024-06-28 02:54:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:30,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:31,872 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 02:54:31,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:31,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502567025] [2024-06-28 02:54:31,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502567025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:31,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:31,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:31,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738054406] [2024-06-28 02:54:31,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:31,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:31,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:31,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:31,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:32,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:32,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 265 transitions, 2268 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 02:54:32,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:32,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:32,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:32,488 INFO L124 PetriNetUnfolderBase]: 636/1306 cut-off events. [2024-06-28 02:54:32,488 INFO L125 PetriNetUnfolderBase]: For 299434/299434 co-relation queries the response was YES. [2024-06-28 02:54:32,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9316 conditions, 1306 events. 636/1306 cut-off events. For 299434/299434 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7943 event pairs, 167 based on Foata normal form. 2/1307 useless extension candidates. Maximal degree in co-relation 9161. Up to 1204 conditions per place. [2024-06-28 02:54:32,502 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 255 selfloop transitions, 18 changer transitions 0/276 dead transitions. [2024-06-28 02:54:32,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 276 transitions, 2838 flow [2024-06-28 02:54:32,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:54:32,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:54:32,503 INFO L175 Difference]: Start difference. First operand has 351 places, 265 transitions, 2268 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:54:32,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 276 transitions, 2838 flow [2024-06-28 02:54:33,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 276 transitions, 2618 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 02:54:33,596 INFO L231 Difference]: Finished difference. Result has 355 places, 265 transitions, 2088 flow [2024-06-28 02:54:33,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2088, PETRI_PLACES=355, PETRI_TRANSITIONS=265} [2024-06-28 02:54:33,597 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-28 02:54:33,597 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 265 transitions, 2088 flow [2024-06-28 02:54:33,597 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 02:54:33,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:33,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:33,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 02:54:33,597 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:33,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:33,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1895811544, now seen corresponding path program 33 times [2024-06-28 02:54:33,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:33,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222111899] [2024-06-28 02:54:33,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:33,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:34,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:34,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222111899] [2024-06-28 02:54:34,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222111899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:34,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:34,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:34,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669963693] [2024-06-28 02:54:34,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:34,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:34,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:34,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:34,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 265 transitions, 2088 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 02:54:34,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:34,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:34,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:35,474 INFO L124 PetriNetUnfolderBase]: 640/1314 cut-off events. [2024-06-28 02:54:35,474 INFO L125 PetriNetUnfolderBase]: For 302183/302183 co-relation queries the response was YES. [2024-06-28 02:54:35,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9249 conditions, 1314 events. 640/1314 cut-off events. For 302183/302183 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8017 event pairs, 148 based on Foata normal form. 2/1315 useless extension candidates. Maximal degree in co-relation 9092. Up to 1107 conditions per place. [2024-06-28 02:54:35,484 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 216 selfloop transitions, 58 changer transitions 0/277 dead transitions. [2024-06-28 02:54:35,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 277 transitions, 2720 flow [2024-06-28 02:54:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:54:35,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:54:35,485 INFO L175 Difference]: Start difference. First operand has 355 places, 265 transitions, 2088 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:54:35,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 277 transitions, 2720 flow [2024-06-28 02:54:36,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 277 transitions, 2670 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:36,627 INFO L231 Difference]: Finished difference. Result has 356 places, 266 transitions, 2220 flow [2024-06-28 02:54:36,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2220, PETRI_PLACES=356, PETRI_TRANSITIONS=266} [2024-06-28 02:54:36,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 02:54:36,627 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 266 transitions, 2220 flow [2024-06-28 02:54:36,627 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 02:54:36,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:36,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:36,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 02:54:36,628 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:36,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:36,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1895633914, now seen corresponding path program 34 times [2024-06-28 02:54:36,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:36,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591997752] [2024-06-28 02:54:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:36,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:37,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:37,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591997752] [2024-06-28 02:54:37,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591997752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:37,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:37,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:37,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985856858] [2024-06-28 02:54:37,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:37,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:37,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:37,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:37,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:37,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:37,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 266 transitions, 2220 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 02:54:37,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:37,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:37,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:38,432 INFO L124 PetriNetUnfolderBase]: 637/1309 cut-off events. [2024-06-28 02:54:38,432 INFO L125 PetriNetUnfolderBase]: For 290207/290207 co-relation queries the response was YES. [2024-06-28 02:54:38,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9026 conditions, 1309 events. 637/1309 cut-off events. For 290207/290207 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7968 event pairs, 145 based on Foata normal form. 2/1310 useless extension candidates. Maximal degree in co-relation 8868. Up to 1076 conditions per place. [2024-06-28 02:54:38,446 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 214 selfloop transitions, 61 changer transitions 0/278 dead transitions. [2024-06-28 02:54:38,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 278 transitions, 2796 flow [2024-06-28 02:54:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:38,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:54:38,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:54:38,447 INFO L175 Difference]: Start difference. First operand has 356 places, 266 transitions, 2220 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:54:38,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 278 transitions, 2796 flow [2024-06-28 02:54:39,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 278 transitions, 2622 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:39,599 INFO L231 Difference]: Finished difference. Result has 358 places, 266 transitions, 2172 flow [2024-06-28 02:54:39,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2172, PETRI_PLACES=358, PETRI_TRANSITIONS=266} [2024-06-28 02:54:39,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 02:54:39,599 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 266 transitions, 2172 flow [2024-06-28 02:54:39,600 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 02:54:39,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:39,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:39,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 02:54:39,600 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:39,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:39,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1252763298, now seen corresponding path program 17 times [2024-06-28 02:54:39,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:39,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535395389] [2024-06-28 02:54:39,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:39,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:40,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:40,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535395389] [2024-06-28 02:54:40,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535395389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:40,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:40,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:40,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118228069] [2024-06-28 02:54:40,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:40,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:40,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:41,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:41,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 266 transitions, 2172 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:41,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:41,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:41,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:41,711 INFO L124 PetriNetUnfolderBase]: 667/1379 cut-off events. [2024-06-28 02:54:41,711 INFO L125 PetriNetUnfolderBase]: For 390456/390456 co-relation queries the response was YES. [2024-06-28 02:54:41,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10321 conditions, 1379 events. 667/1379 cut-off events. For 390456/390456 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8549 event pairs, 157 based on Foata normal form. 6/1384 useless extension candidates. Maximal degree in co-relation 10162. Up to 940 conditions per place. [2024-06-28 02:54:41,726 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 188 selfloop transitions, 86 changer transitions 9/286 dead transitions. [2024-06-28 02:54:41,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 286 transitions, 3112 flow [2024-06-28 02:54:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:41,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-28 02:54:41,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 02:54:41,727 INFO L175 Difference]: Start difference. First operand has 358 places, 266 transitions, 2172 flow. Second operand 12 states and 155 transitions. [2024-06-28 02:54:41,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 286 transitions, 3112 flow [2024-06-28 02:54:43,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 286 transitions, 2756 flow, removed 34 selfloop flow, removed 14 redundant places. [2024-06-28 02:54:43,146 INFO L231 Difference]: Finished difference. Result has 356 places, 263 transitions, 1979 flow [2024-06-28 02:54:43,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1979, PETRI_PLACES=356, PETRI_TRANSITIONS=263} [2024-06-28 02:54:43,146 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 02:54:43,146 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 263 transitions, 1979 flow [2024-06-28 02:54:43,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:43,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:43,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:43,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 02:54:43,147 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:43,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:43,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2123719638, now seen corresponding path program 18 times [2024-06-28 02:54:43,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:43,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28977485] [2024-06-28 02:54:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:43,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:44,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:44,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28977485] [2024-06-28 02:54:44,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28977485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:44,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:44,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:44,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287588206] [2024-06-28 02:54:44,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:44,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:44,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:44,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:44,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:44,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:44,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 263 transitions, 1979 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:44,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:44,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:44,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:45,294 INFO L124 PetriNetUnfolderBase]: 661/1369 cut-off events. [2024-06-28 02:54:45,294 INFO L125 PetriNetUnfolderBase]: For 406306/406306 co-relation queries the response was YES. [2024-06-28 02:54:45,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9902 conditions, 1369 events. 661/1369 cut-off events. For 406306/406306 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8498 event pairs, 163 based on Foata normal form. 8/1376 useless extension candidates. Maximal degree in co-relation 9746. Up to 1077 conditions per place. [2024-06-28 02:54:45,309 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 192 selfloop transitions, 66 changer transitions 17/278 dead transitions. [2024-06-28 02:54:45,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 278 transitions, 2597 flow [2024-06-28 02:54:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:45,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 02:54:45,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 02:54:45,310 INFO L175 Difference]: Start difference. First operand has 356 places, 263 transitions, 1979 flow. Second operand 12 states and 150 transitions. [2024-06-28 02:54:45,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 278 transitions, 2597 flow [2024-06-28 02:54:46,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 278 transitions, 2413 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 02:54:46,488 INFO L231 Difference]: Finished difference. Result has 351 places, 253 transitions, 1871 flow [2024-06-28 02:54:46,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1871, PETRI_PLACES=351, PETRI_TRANSITIONS=253} [2024-06-28 02:54:46,489 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 321 predicate places. [2024-06-28 02:54:46,489 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 253 transitions, 1871 flow [2024-06-28 02:54:46,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:46,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:46,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:46,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 02:54:46,489 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:46,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2132290518, now seen corresponding path program 19 times [2024-06-28 02:54:46,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:46,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631155132] [2024-06-28 02:54:46,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:46,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:47,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:47,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631155132] [2024-06-28 02:54:47,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631155132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:47,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:47,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:47,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912859518] [2024-06-28 02:54:47,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:47,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:47,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:47,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:47,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:47,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:47,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 253 transitions, 1871 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:47,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:47,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:47,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:48,509 INFO L124 PetriNetUnfolderBase]: 660/1378 cut-off events. [2024-06-28 02:54:48,509 INFO L125 PetriNetUnfolderBase]: For 427301/427301 co-relation queries the response was YES. [2024-06-28 02:54:48,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10764 conditions, 1378 events. 660/1378 cut-off events. For 427301/427301 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8590 event pairs, 169 based on Foata normal form. 6/1383 useless extension candidates. Maximal degree in co-relation 10612. Up to 995 conditions per place. [2024-06-28 02:54:48,523 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 190 selfloop transitions, 71 changer transitions 9/273 dead transitions. [2024-06-28 02:54:48,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 273 transitions, 2769 flow [2024-06-28 02:54:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:48,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 02:54:48,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 02:54:48,524 INFO L175 Difference]: Start difference. First operand has 351 places, 253 transitions, 1871 flow. Second operand 12 states and 152 transitions. [2024-06-28 02:54:48,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 273 transitions, 2769 flow [2024-06-28 02:54:49,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 273 transitions, 2573 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-28 02:54:49,898 INFO L231 Difference]: Finished difference. Result has 343 places, 250 transitions, 1811 flow [2024-06-28 02:54:49,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1811, PETRI_PLACES=343, PETRI_TRANSITIONS=250} [2024-06-28 02:54:49,899 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-28 02:54:49,899 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 250 transitions, 1811 flow [2024-06-28 02:54:49,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:49,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:49,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:49,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 02:54:49,899 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:49,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:49,899 INFO L85 PathProgramCache]: Analyzing trace with hash 178664074, now seen corresponding path program 20 times [2024-06-28 02:54:49,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:49,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126778453] [2024-06-28 02:54:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:49,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:51,736 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 02:54:51,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:51,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126778453] [2024-06-28 02:54:51,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126778453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:51,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:51,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:51,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440895409] [2024-06-28 02:54:51,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:51,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:51,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:51,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:51,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:51,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:51,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 250 transitions, 1811 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:51,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:51,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:51,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:52,540 INFO L124 PetriNetUnfolderBase]: 654/1368 cut-off events. [2024-06-28 02:54:52,540 INFO L125 PetriNetUnfolderBase]: For 422614/422614 co-relation queries the response was YES. [2024-06-28 02:54:52,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10503 conditions, 1368 events. 654/1368 cut-off events. For 422614/422614 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8541 event pairs, 174 based on Foata normal form. 8/1375 useless extension candidates. Maximal degree in co-relation 10355. Up to 1134 conditions per place. [2024-06-28 02:54:52,554 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 208 selfloop transitions, 45 changer transitions 9/265 dead transitions. [2024-06-28 02:54:52,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 265 transitions, 2401 flow [2024-06-28 02:54:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 02:54:52,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-28 02:54:52,555 INFO L175 Difference]: Start difference. First operand has 343 places, 250 transitions, 1811 flow. Second operand 12 states and 145 transitions. [2024-06-28 02:54:52,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 265 transitions, 2401 flow [2024-06-28 02:54:54,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 265 transitions, 2269 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:54:54,038 INFO L231 Difference]: Finished difference. Result has 340 places, 247 transitions, 1754 flow [2024-06-28 02:54:54,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1754, PETRI_PLACES=340, PETRI_TRANSITIONS=247} [2024-06-28 02:54:54,038 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-28 02:54:54,038 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 247 transitions, 1754 flow [2024-06-28 02:54:54,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:54,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:54,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:54,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 02:54:54,038 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:54,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:54,039 INFO L85 PathProgramCache]: Analyzing trace with hash 795185056, now seen corresponding path program 21 times [2024-06-28 02:54:54,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:54,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847585598] [2024-06-28 02:54:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:54,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:55,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:55,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847585598] [2024-06-28 02:54:55,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847585598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:55,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:55,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:55,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620437848] [2024-06-28 02:54:55,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:55,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:55,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:55,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:55,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:55,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:55,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 247 transitions, 1754 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:55,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:55,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:55,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:56,326 INFO L124 PetriNetUnfolderBase]: 687/1447 cut-off events. [2024-06-28 02:54:56,326 INFO L125 PetriNetUnfolderBase]: For 498186/498186 co-relation queries the response was YES. [2024-06-28 02:54:56,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12352 conditions, 1447 events. 687/1447 cut-off events. For 498186/498186 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9189 event pairs, 196 based on Foata normal form. 6/1452 useless extension candidates. Maximal degree in co-relation 12206. Up to 1014 conditions per place. [2024-06-28 02:54:56,338 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 77 changer transitions 7/268 dead transitions. [2024-06-28 02:54:56,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 268 transitions, 2643 flow [2024-06-28 02:54:56,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-28 02:54:56,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 02:54:56,339 INFO L175 Difference]: Start difference. First operand has 340 places, 247 transitions, 1754 flow. Second operand 12 states and 155 transitions. [2024-06-28 02:54:56,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 268 transitions, 2643 flow [2024-06-28 02:54:57,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 268 transitions, 2545 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:54:57,847 INFO L231 Difference]: Finished difference. Result has 340 places, 246 transitions, 1823 flow [2024-06-28 02:54:57,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1823, PETRI_PLACES=340, PETRI_TRANSITIONS=246} [2024-06-28 02:54:57,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-28 02:54:57,847 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 246 transitions, 1823 flow [2024-06-28 02:54:57,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:57,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:57,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:57,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 02:54:57,847 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:57,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:57,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1511373832, now seen corresponding path program 22 times [2024-06-28 02:54:57,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:57,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102104544] [2024-06-28 02:54:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:57,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:59,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:59,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102104544] [2024-06-28 02:54:59,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102104544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:59,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:59,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:59,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003478041] [2024-06-28 02:54:59,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:59,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:59,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:59,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:59,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:59,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:54:59,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 246 transitions, 1823 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:59,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:59,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:54:59,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:59,809 INFO L124 PetriNetUnfolderBase]: 655/1375 cut-off events. [2024-06-28 02:54:59,809 INFO L125 PetriNetUnfolderBase]: For 446203/446203 co-relation queries the response was YES. [2024-06-28 02:54:59,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10424 conditions, 1375 events. 655/1375 cut-off events. For 446203/446203 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8628 event pairs, 179 based on Foata normal form. 14/1388 useless extension candidates. Maximal degree in co-relation 10277. Up to 939 conditions per place. [2024-06-28 02:54:59,822 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 151 selfloop transitions, 93 changer transitions 14/261 dead transitions. [2024-06-28 02:54:59,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 261 transitions, 2405 flow [2024-06-28 02:54:59,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-28 02:54:59,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-28 02:54:59,823 INFO L175 Difference]: Start difference. First operand has 340 places, 246 transitions, 1823 flow. Second operand 12 states and 154 transitions. [2024-06-28 02:54:59,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 261 transitions, 2405 flow [2024-06-28 02:55:00,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 261 transitions, 2242 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 02:55:00,982 INFO L231 Difference]: Finished difference. Result has 339 places, 239 transitions, 1805 flow [2024-06-28 02:55:00,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1805, PETRI_PLACES=339, PETRI_TRANSITIONS=239} [2024-06-28 02:55:00,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-28 02:55:00,983 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 239 transitions, 1805 flow [2024-06-28 02:55:00,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:00,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:00,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:00,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 02:55:00,983 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:00,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:00,983 INFO L85 PathProgramCache]: Analyzing trace with hash 185150824, now seen corresponding path program 23 times [2024-06-28 02:55:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:00,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479178657] [2024-06-28 02:55:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:00,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:02,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:02,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479178657] [2024-06-28 02:55:02,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479178657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:02,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:02,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:02,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579383338] [2024-06-28 02:55:02,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:02,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:02,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:02,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:02,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:02,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 239 transitions, 1805 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:02,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:02,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:02,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:03,046 INFO L124 PetriNetUnfolderBase]: 634/1334 cut-off events. [2024-06-28 02:55:03,046 INFO L125 PetriNetUnfolderBase]: For 402424/402424 co-relation queries the response was YES. [2024-06-28 02:55:03,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10312 conditions, 1334 events. 634/1334 cut-off events. For 402424/402424 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8311 event pairs, 174 based on Foata normal form. 8/1341 useless extension candidates. Maximal degree in co-relation 10167. Up to 1096 conditions per place. [2024-06-28 02:55:03,060 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 194 selfloop transitions, 48 changer transitions 9/254 dead transitions. [2024-06-28 02:55:03,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 254 transitions, 2373 flow [2024-06-28 02:55:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:03,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 02:55:03,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-28 02:55:03,061 INFO L175 Difference]: Start difference. First operand has 339 places, 239 transitions, 1805 flow. Second operand 12 states and 145 transitions. [2024-06-28 02:55:03,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 254 transitions, 2373 flow [2024-06-28 02:55:04,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 254 transitions, 2175 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 02:55:04,212 INFO L231 Difference]: Finished difference. Result has 330 places, 236 transitions, 1687 flow [2024-06-28 02:55:04,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1687, PETRI_PLACES=330, PETRI_TRANSITIONS=236} [2024-06-28 02:55:04,213 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-28 02:55:04,213 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 236 transitions, 1687 flow [2024-06-28 02:55:04,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:04,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:04,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:04,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 02:55:04,213 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:04,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:04,213 INFO L85 PathProgramCache]: Analyzing trace with hash 603866962, now seen corresponding path program 24 times [2024-06-28 02:55:04,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:04,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533612531] [2024-06-28 02:55:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:04,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:06,166 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 02:55:06,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:06,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533612531] [2024-06-28 02:55:06,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533612531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:06,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:06,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:06,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685933171] [2024-06-28 02:55:06,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:06,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:06,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:06,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:06,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 236 transitions, 1687 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:06,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:06,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:06,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:06,981 INFO L124 PetriNetUnfolderBase]: 647/1367 cut-off events. [2024-06-28 02:55:06,981 INFO L125 PetriNetUnfolderBase]: For 421907/421907 co-relation queries the response was YES. [2024-06-28 02:55:06,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11154 conditions, 1367 events. 647/1367 cut-off events. For 421907/421907 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8559 event pairs, 183 based on Foata normal form. 6/1372 useless extension candidates. Maximal degree in co-relation 11012. Up to 1103 conditions per place. [2024-06-28 02:55:06,994 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 200 selfloop transitions, 45 changer transitions 7/255 dead transitions. [2024-06-28 02:55:06,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 255 transitions, 2529 flow [2024-06-28 02:55:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:06,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 02:55:06,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 02:55:06,995 INFO L175 Difference]: Start difference. First operand has 330 places, 236 transitions, 1687 flow. Second operand 12 states and 146 transitions. [2024-06-28 02:55:06,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 255 transitions, 2529 flow [2024-06-28 02:55:08,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 255 transitions, 2425 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:08,209 INFO L231 Difference]: Finished difference. Result has 328 places, 233 transitions, 1662 flow [2024-06-28 02:55:08,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1662, PETRI_PLACES=328, PETRI_TRANSITIONS=233} [2024-06-28 02:55:08,209 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-28 02:55:08,210 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 233 transitions, 1662 flow [2024-06-28 02:55:08,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:08,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:08,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:08,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 02:55:08,210 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:08,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:08,210 INFO L85 PathProgramCache]: Analyzing trace with hash 273084184, now seen corresponding path program 25 times [2024-06-28 02:55:08,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:08,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249723366] [2024-06-28 02:55:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:08,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:09,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:09,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249723366] [2024-06-28 02:55:09,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249723366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:09,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:09,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:09,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028947497] [2024-06-28 02:55:09,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:09,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:09,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:09,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:09,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:09,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:09,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 233 transitions, 1662 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:09,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:09,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:09,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:10,476 INFO L124 PetriNetUnfolderBase]: 640/1354 cut-off events. [2024-06-28 02:55:10,476 INFO L125 PetriNetUnfolderBase]: For 417105/417105 co-relation queries the response was YES. [2024-06-28 02:55:10,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11048 conditions, 1354 events. 640/1354 cut-off events. For 417105/417105 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8490 event pairs, 183 based on Foata normal form. 6/1359 useless extension candidates. Maximal degree in co-relation 10907. Up to 1119 conditions per place. [2024-06-28 02:55:10,490 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 52 changer transitions 12/248 dead transitions. [2024-06-28 02:55:10,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 248 transitions, 2212 flow [2024-06-28 02:55:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 02:55:10,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-28 02:55:10,491 INFO L175 Difference]: Start difference. First operand has 328 places, 233 transitions, 1662 flow. Second operand 12 states and 143 transitions. [2024-06-28 02:55:10,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 248 transitions, 2212 flow [2024-06-28 02:55:11,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 248 transitions, 2118 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:55:11,984 INFO L231 Difference]: Finished difference. Result has 325 places, 229 transitions, 1652 flow [2024-06-28 02:55:11,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1652, PETRI_PLACES=325, PETRI_TRANSITIONS=229} [2024-06-28 02:55:11,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 02:55:11,984 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 229 transitions, 1652 flow [2024-06-28 02:55:11,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:11,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:11,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:11,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 02:55:11,985 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:11,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:11,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1154303588, now seen corresponding path program 26 times [2024-06-28 02:55:11,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:11,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400780203] [2024-06-28 02:55:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:13,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:13,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400780203] [2024-06-28 02:55:13,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400780203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:13,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:13,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:13,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202473428] [2024-06-28 02:55:13,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:13,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:13,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:13,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:13,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:13,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:13,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 229 transitions, 1652 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:13,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:13,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:13,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:13,986 INFO L124 PetriNetUnfolderBase]: 632/1334 cut-off events. [2024-06-28 02:55:13,986 INFO L125 PetriNetUnfolderBase]: For 410074/410074 co-relation queries the response was YES. [2024-06-28 02:55:13,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10950 conditions, 1334 events. 632/1334 cut-off events. For 410074/410074 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8319 event pairs, 180 based on Foata normal form. 6/1339 useless extension candidates. Maximal degree in co-relation 10811. Up to 981 conditions per place. [2024-06-28 02:55:14,000 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 74 changer transitions 12/244 dead transitions. [2024-06-28 02:55:14,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 244 transitions, 2194 flow [2024-06-28 02:55:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:14,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 02:55:14,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-28 02:55:14,001 INFO L175 Difference]: Start difference. First operand has 325 places, 229 transitions, 1652 flow. Second operand 12 states and 149 transitions. [2024-06-28 02:55:14,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 244 transitions, 2194 flow [2024-06-28 02:55:15,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 244 transitions, 2082 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:15,375 INFO L231 Difference]: Finished difference. Result has 319 places, 224 transitions, 1666 flow [2024-06-28 02:55:15,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1666, PETRI_PLACES=319, PETRI_TRANSITIONS=224} [2024-06-28 02:55:15,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-28 02:55:15,376 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 224 transitions, 1666 flow [2024-06-28 02:55:15,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:15,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:15,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:15,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 02:55:15,376 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:15,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:15,377 INFO L85 PathProgramCache]: Analyzing trace with hash 184920184, now seen corresponding path program 27 times [2024-06-28 02:55:15,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:15,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092687600] [2024-06-28 02:55:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:15,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:17,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:17,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092687600] [2024-06-28 02:55:17,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092687600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:17,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:17,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:17,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970638972] [2024-06-28 02:55:17,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:17,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:17,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:17,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:17,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 224 transitions, 1666 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:17,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:17,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:17,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:18,035 INFO L124 PetriNetUnfolderBase]: 613/1297 cut-off events. [2024-06-28 02:55:18,035 INFO L125 PetriNetUnfolderBase]: For 391010/391010 co-relation queries the response was YES. [2024-06-28 02:55:18,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9748 conditions, 1297 events. 613/1297 cut-off events. For 391010/391010 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8050 event pairs, 181 based on Foata normal form. 14/1310 useless extension candidates. Maximal degree in co-relation 9612. Up to 1058 conditions per place. [2024-06-28 02:55:18,047 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 182 selfloop transitions, 40 changer transitions 14/239 dead transitions. [2024-06-28 02:55:18,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 239 transitions, 2204 flow [2024-06-28 02:55:18,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:18,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:18,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 02:55:18,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-28 02:55:18,048 INFO L175 Difference]: Start difference. First operand has 319 places, 224 transitions, 1666 flow. Second operand 12 states and 143 transitions. [2024-06-28 02:55:18,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 239 transitions, 2204 flow [2024-06-28 02:55:18,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 239 transitions, 2048 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:55:18,899 INFO L231 Difference]: Finished difference. Result has 312 places, 217 transitions, 1551 flow [2024-06-28 02:55:18,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1551, PETRI_PLACES=312, PETRI_TRANSITIONS=217} [2024-06-28 02:55:18,899 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-28 02:55:18,899 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 217 transitions, 1551 flow [2024-06-28 02:55:18,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:18,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:18,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:18,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 02:55:18,899 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:18,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:18,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2132002218, now seen corresponding path program 28 times [2024-06-28 02:55:18,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:18,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304440816] [2024-06-28 02:55:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:18,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:20,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:20,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304440816] [2024-06-28 02:55:20,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304440816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:20,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:20,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:20,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323656362] [2024-06-28 02:55:20,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:20,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:20,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:20,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:20,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:20,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 217 transitions, 1551 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:20,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:20,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:20,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:20,718 INFO L124 PetriNetUnfolderBase]: 588/1240 cut-off events. [2024-06-28 02:55:20,718 INFO L125 PetriNetUnfolderBase]: For 322305/322305 co-relation queries the response was YES. [2024-06-28 02:55:20,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9362 conditions, 1240 events. 588/1240 cut-off events. For 322305/322305 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7586 event pairs, 167 based on Foata normal form. 6/1245 useless extension candidates. Maximal degree in co-relation 9229. Up to 1009 conditions per place. [2024-06-28 02:55:20,730 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 163 selfloop transitions, 54 changer transitions 12/232 dead transitions. [2024-06-28 02:55:20,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 232 transitions, 2069 flow [2024-06-28 02:55:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 02:55:20,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-28 02:55:20,731 INFO L175 Difference]: Start difference. First operand has 312 places, 217 transitions, 1551 flow. Second operand 12 states and 145 transitions. [2024-06-28 02:55:20,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 232 transitions, 2069 flow [2024-06-28 02:55:21,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 232 transitions, 1977 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-28 02:55:21,633 INFO L231 Difference]: Finished difference. Result has 303 places, 212 transitions, 1545 flow [2024-06-28 02:55:21,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1545, PETRI_PLACES=303, PETRI_TRANSITIONS=212} [2024-06-28 02:55:21,633 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-28 02:55:21,633 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 212 transitions, 1545 flow [2024-06-28 02:55:21,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:21,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:21,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:21,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 02:55:21,634 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:21,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:21,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1895818488, now seen corresponding path program 29 times [2024-06-28 02:55:21,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:21,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001992415] [2024-06-28 02:55:21,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:21,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:24,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:24,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001992415] [2024-06-28 02:55:24,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001992415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:24,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:24,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:24,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689033730] [2024-06-28 02:55:24,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:24,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:24,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:24,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:24,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 212 transitions, 1545 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:24,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:24,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:24,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:25,202 INFO L124 PetriNetUnfolderBase]: 583/1225 cut-off events. [2024-06-28 02:55:25,202 INFO L125 PetriNetUnfolderBase]: For 314288/314288 co-relation queries the response was YES. [2024-06-28 02:55:25,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9204 conditions, 1225 events. 583/1225 cut-off events. For 314288/314288 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7450 event pairs, 170 based on Foata normal form. 8/1232 useless extension candidates. Maximal degree in co-relation 9075. Up to 978 conditions per place. [2024-06-28 02:55:25,214 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 164 selfloop transitions, 53 changer transitions 7/227 dead transitions. [2024-06-28 02:55:25,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 227 transitions, 2059 flow [2024-06-28 02:55:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 02:55:25,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-06-28 02:55:25,215 INFO L175 Difference]: Start difference. First operand has 303 places, 212 transitions, 1545 flow. Second operand 12 states and 151 transitions. [2024-06-28 02:55:25,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 227 transitions, 2059 flow [2024-06-28 02:55:26,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 227 transitions, 1943 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:55:26,066 INFO L231 Difference]: Finished difference. Result has 296 places, 209 transitions, 1522 flow [2024-06-28 02:55:26,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1522, PETRI_PLACES=296, PETRI_TRANSITIONS=209} [2024-06-28 02:55:26,066 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-28 02:55:26,066 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 209 transitions, 1522 flow [2024-06-28 02:55:26,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:26,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:26,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:26,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 02:55:26,066 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:26,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:26,067 INFO L85 PathProgramCache]: Analyzing trace with hash 573301006, now seen corresponding path program 30 times [2024-06-28 02:55:26,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:26,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578238915] [2024-06-28 02:55:26,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:26,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:28,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:28,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578238915] [2024-06-28 02:55:28,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578238915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:28,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:28,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:28,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640471119] [2024-06-28 02:55:28,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:28,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:28,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:28,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:28,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:28,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:28,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 209 transitions, 1522 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:28,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:28,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:28,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:28,797 INFO L124 PetriNetUnfolderBase]: 578/1222 cut-off events. [2024-06-28 02:55:28,797 INFO L125 PetriNetUnfolderBase]: For 296816/296816 co-relation queries the response was YES. [2024-06-28 02:55:28,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9036 conditions, 1222 events. 578/1222 cut-off events. For 296816/296816 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7460 event pairs, 173 based on Foata normal form. 8/1229 useless extension candidates. Maximal degree in co-relation 8910. Up to 918 conditions per place. [2024-06-28 02:55:28,808 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 146 selfloop transitions, 66 changer transitions 9/224 dead transitions. [2024-06-28 02:55:28,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 224 transitions, 2030 flow [2024-06-28 02:55:28,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:28,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 02:55:28,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 02:55:28,809 INFO L175 Difference]: Start difference. First operand has 296 places, 209 transitions, 1522 flow. Second operand 12 states and 148 transitions. [2024-06-28 02:55:28,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 224 transitions, 2030 flow [2024-06-28 02:55:29,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 224 transitions, 1918 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:55:29,681 INFO L231 Difference]: Finished difference. Result has 294 places, 206 transitions, 1527 flow [2024-06-28 02:55:29,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1527, PETRI_PLACES=294, PETRI_TRANSITIONS=206} [2024-06-28 02:55:29,681 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-28 02:55:29,681 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 206 transitions, 1527 flow [2024-06-28 02:55:29,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:29,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:29,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:29,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 02:55:29,682 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:29,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:29,682 INFO L85 PathProgramCache]: Analyzing trace with hash 51200134, now seen corresponding path program 31 times [2024-06-28 02:55:29,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:29,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526835019] [2024-06-28 02:55:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:29,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:31,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:31,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526835019] [2024-06-28 02:55:31,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526835019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:31,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:31,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:31,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841593465] [2024-06-28 02:55:31,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:31,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:31,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:31,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:31,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:32,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:32,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 206 transitions, 1527 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:32,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:32,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:32,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:32,587 INFO L124 PetriNetUnfolderBase]: 573/1211 cut-off events. [2024-06-28 02:55:32,587 INFO L125 PetriNetUnfolderBase]: For 293296/293296 co-relation queries the response was YES. [2024-06-28 02:55:32,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8972 conditions, 1211 events. 573/1211 cut-off events. For 293296/293296 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7407 event pairs, 170 based on Foata normal form. 8/1218 useless extension candidates. Maximal degree in co-relation 8847. Up to 973 conditions per place. [2024-06-28 02:55:32,598 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 164 selfloop transitions, 47 changer transitions 7/221 dead transitions. [2024-06-28 02:55:32,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 221 transitions, 2029 flow [2024-06-28 02:55:32,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 02:55:32,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 02:55:32,599 INFO L175 Difference]: Start difference. First operand has 294 places, 206 transitions, 1527 flow. Second operand 12 states and 148 transitions. [2024-06-28 02:55:32,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 221 transitions, 2029 flow [2024-06-28 02:55:33,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 221 transitions, 1893 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:33,351 INFO L231 Difference]: Finished difference. Result has 292 places, 203 transitions, 1472 flow [2024-06-28 02:55:33,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1472, PETRI_PLACES=292, PETRI_TRANSITIONS=203} [2024-06-28 02:55:33,351 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-28 02:55:33,351 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 203 transitions, 1472 flow [2024-06-28 02:55:33,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:33,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:33,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:33,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 02:55:33,352 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:33,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:33,352 INFO L85 PathProgramCache]: Analyzing trace with hash 264732782, now seen corresponding path program 32 times [2024-06-28 02:55:33,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:33,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637989193] [2024-06-28 02:55:33,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:33,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:34,914 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 02:55:34,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:34,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637989193] [2024-06-28 02:55:34,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637989193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:34,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:34,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:34,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686701454] [2024-06-28 02:55:34,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:34,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:34,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:34,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:34,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:35,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:35,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 203 transitions, 1472 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:35,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:35,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:35,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:35,532 INFO L124 PetriNetUnfolderBase]: 561/1199 cut-off events. [2024-06-28 02:55:35,533 INFO L125 PetriNetUnfolderBase]: For 274947/274947 co-relation queries the response was YES. [2024-06-28 02:55:35,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8622 conditions, 1199 events. 561/1199 cut-off events. For 274947/274947 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7340 event pairs, 173 based on Foata normal form. 8/1206 useless extension candidates. Maximal degree in co-relation 8498. Up to 956 conditions per place. [2024-06-28 02:55:35,541 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 46 changer transitions 9/218 dead transitions. [2024-06-28 02:55:35,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 218 transitions, 1968 flow [2024-06-28 02:55:35,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:35,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:35,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 02:55:35,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 02:55:35,542 INFO L175 Difference]: Start difference. First operand has 292 places, 203 transitions, 1472 flow. Second operand 12 states and 147 transitions. [2024-06-28 02:55:35,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 218 transitions, 1968 flow [2024-06-28 02:55:36,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 218 transitions, 1868 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:55:36,264 INFO L231 Difference]: Finished difference. Result has 290 places, 200 transitions, 1448 flow [2024-06-28 02:55:36,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1448, PETRI_PLACES=290, PETRI_TRANSITIONS=200} [2024-06-28 02:55:36,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-28 02:55:36,265 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 200 transitions, 1448 flow [2024-06-28 02:55:36,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:36,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:36,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:36,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 02:55:36,265 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:36,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:36,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1902313608, now seen corresponding path program 33 times [2024-06-28 02:55:36,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:36,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243007943] [2024-06-28 02:55:36,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:36,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:37,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:37,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243007943] [2024-06-28 02:55:37,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243007943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:37,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:37,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:37,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701537333] [2024-06-28 02:55:37,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:37,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:37,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:37,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:37,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:37,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 200 transitions, 1448 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:37,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:37,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:37,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:38,206 INFO L124 PetriNetUnfolderBase]: 552/1182 cut-off events. [2024-06-28 02:55:38,206 INFO L125 PetriNetUnfolderBase]: For 260915/260915 co-relation queries the response was YES. [2024-06-28 02:55:38,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8441 conditions, 1182 events. 552/1182 cut-off events. For 260915/260915 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7184 event pairs, 170 based on Foata normal form. 6/1187 useless extension candidates. Maximal degree in co-relation 8318. Up to 914 conditions per place. [2024-06-28 02:55:38,217 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 164 selfloop transitions, 43 changer transitions 7/217 dead transitions. [2024-06-28 02:55:38,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 217 transitions, 2148 flow [2024-06-28 02:55:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 02:55:38,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 02:55:38,217 INFO L175 Difference]: Start difference. First operand has 290 places, 200 transitions, 1448 flow. Second operand 11 states and 140 transitions. [2024-06-28 02:55:38,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 217 transitions, 2148 flow [2024-06-28 02:55:38,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 217 transitions, 2048 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:38,939 INFO L231 Difference]: Finished difference. Result has 287 places, 197 transitions, 1423 flow [2024-06-28 02:55:38,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1423, PETRI_PLACES=287, PETRI_TRANSITIONS=197} [2024-06-28 02:55:38,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-28 02:55:38,940 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 197 transitions, 1423 flow [2024-06-28 02:55:38,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:38,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:38,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:38,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 02:55:38,940 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:38,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:38,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1732779862, now seen corresponding path program 34 times [2024-06-28 02:55:38,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:38,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999214762] [2024-06-28 02:55:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:38,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:40,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:40,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999214762] [2024-06-28 02:55:40,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999214762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:40,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:40,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:40,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862239975] [2024-06-28 02:55:40,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:40,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:40,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:40,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:40,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:41,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:41,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 197 transitions, 1423 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:41,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:41,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:41,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:41,623 INFO L124 PetriNetUnfolderBase]: 545/1165 cut-off events. [2024-06-28 02:55:41,623 INFO L125 PetriNetUnfolderBase]: For 255788/255788 co-relation queries the response was YES. [2024-06-28 02:55:41,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8341 conditions, 1165 events. 545/1165 cut-off events. For 255788/255788 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7040 event pairs, 168 based on Foata normal form. 6/1170 useless extension candidates. Maximal degree in co-relation 8219. Up to 812 conditions per place. [2024-06-28 02:55:41,633 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 142 selfloop transitions, 64 changer transitions 7/216 dead transitions. [2024-06-28 02:55:41,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 216 transitions, 2151 flow [2024-06-28 02:55:41,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:41,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-28 02:55:41,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-06-28 02:55:41,634 INFO L175 Difference]: Start difference. First operand has 287 places, 197 transitions, 1423 flow. Second operand 12 states and 151 transitions. [2024-06-28 02:55:41,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 216 transitions, 2151 flow [2024-06-28 02:55:42,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 216 transitions, 2055 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:42,253 INFO L231 Difference]: Finished difference. Result has 284 places, 194 transitions, 1448 flow [2024-06-28 02:55:42,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1448, PETRI_PLACES=284, PETRI_TRANSITIONS=194} [2024-06-28 02:55:42,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-28 02:55:42,254 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 194 transitions, 1448 flow [2024-06-28 02:55:42,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:42,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:42,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:42,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 02:55:42,254 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:42,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:42,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1739274982, now seen corresponding path program 35 times [2024-06-28 02:55:42,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:42,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625211535] [2024-06-28 02:55:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:42,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:43,917 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 02:55:43,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:43,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625211535] [2024-06-28 02:55:43,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625211535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:43,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:43,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:43,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923301892] [2024-06-28 02:55:43,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:43,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:43,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:43,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:43,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:44,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:44,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 194 transitions, 1448 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:44,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:44,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:44,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:44,602 INFO L124 PetriNetUnfolderBase]: 520/1110 cut-off events. [2024-06-28 02:55:44,602 INFO L125 PetriNetUnfolderBase]: For 218743/218743 co-relation queries the response was YES. [2024-06-28 02:55:44,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7299 conditions, 1110 events. 520/1110 cut-off events. For 218743/218743 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6631 event pairs, 160 based on Foata normal form. 8/1117 useless extension candidates. Maximal degree in co-relation 7179. Up to 812 conditions per place. [2024-06-28 02:55:44,612 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 134 selfloop transitions, 63 changer transitions 9/209 dead transitions. [2024-06-28 02:55:44,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 209 transitions, 1926 flow [2024-06-28 02:55:44,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 02:55:44,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 02:55:44,613 INFO L175 Difference]: Start difference. First operand has 284 places, 194 transitions, 1448 flow. Second operand 12 states and 147 transitions. [2024-06-28 02:55:44,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 209 transitions, 1926 flow [2024-06-28 02:55:45,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 209 transitions, 1796 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:45,095 INFO L231 Difference]: Finished difference. Result has 282 places, 191 transitions, 1427 flow [2024-06-28 02:55:45,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1427, PETRI_PLACES=282, PETRI_TRANSITIONS=191} [2024-06-28 02:55:45,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-28 02:55:45,096 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 191 transitions, 1427 flow [2024-06-28 02:55:45,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:45,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:45,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:45,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 02:55:45,096 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:45,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash -922694698, now seen corresponding path program 36 times [2024-06-28 02:55:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:45,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309401533] [2024-06-28 02:55:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:45,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:46,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:46,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309401533] [2024-06-28 02:55:46,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309401533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:46,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:46,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707820868] [2024-06-28 02:55:46,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:46,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:46,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:46,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:46,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 191 transitions, 1427 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:46,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:46,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:46,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:46,996 INFO L124 PetriNetUnfolderBase]: 526/1128 cut-off events. [2024-06-28 02:55:46,996 INFO L125 PetriNetUnfolderBase]: For 230957/230957 co-relation queries the response was YES. [2024-06-28 02:55:47,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7866 conditions, 1128 events. 526/1128 cut-off events. For 230957/230957 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6768 event pairs, 182 based on Foata normal form. 6/1133 useless extension candidates. Maximal degree in co-relation 7747. Up to 864 conditions per place. [2024-06-28 02:55:47,006 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 169 selfloop transitions, 28 changer transitions 12/212 dead transitions. [2024-06-28 02:55:47,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 212 transitions, 2117 flow [2024-06-28 02:55:47,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:55:47,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:55:47,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-28 02:55:47,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 02:55:47,007 INFO L175 Difference]: Start difference. First operand has 282 places, 191 transitions, 1427 flow. Second operand 13 states and 155 transitions. [2024-06-28 02:55:47,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 212 transitions, 2117 flow [2024-06-28 02:55:47,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 212 transitions, 1983 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:47,461 INFO L231 Difference]: Finished difference. Result has 279 places, 187 transitions, 1334 flow [2024-06-28 02:55:47,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1334, PETRI_PLACES=279, PETRI_TRANSITIONS=187} [2024-06-28 02:55:47,462 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-28 02:55:47,462 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 187 transitions, 1334 flow [2024-06-28 02:55:47,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:47,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:47,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:47,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 02:55:47,462 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:47,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1265289958, now seen corresponding path program 37 times [2024-06-28 02:55:47,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:47,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520153493] [2024-06-28 02:55:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:47,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:48,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520153493] [2024-06-28 02:55:48,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520153493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:48,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:48,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:48,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367845692] [2024-06-28 02:55:48,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:48,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:48,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:48,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:48,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:49,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:49,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 187 transitions, 1334 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:49,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:49,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:49,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:49,493 INFO L124 PetriNetUnfolderBase]: 516/1106 cut-off events. [2024-06-28 02:55:49,493 INFO L125 PetriNetUnfolderBase]: For 235302/235302 co-relation queries the response was YES. [2024-06-28 02:55:49,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7699 conditions, 1106 events. 516/1106 cut-off events. For 235302/235302 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6593 event pairs, 186 based on Foata normal form. 8/1113 useless extension candidates. Maximal degree in co-relation 7581. Up to 964 conditions per place. [2024-06-28 02:55:49,502 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 163 selfloop transitions, 28 changer transitions 9/203 dead transitions. [2024-06-28 02:55:49,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 203 transitions, 1802 flow [2024-06-28 02:55:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:55:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:55:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-28 02:55:49,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37220843672456577 [2024-06-28 02:55:49,503 INFO L175 Difference]: Start difference. First operand has 279 places, 187 transitions, 1334 flow. Second operand 13 states and 150 transitions. [2024-06-28 02:55:49,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 203 transitions, 1802 flow [2024-06-28 02:55:50,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 203 transitions, 1751 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:55:50,034 INFO L231 Difference]: Finished difference. Result has 274 places, 184 transitions, 1323 flow [2024-06-28 02:55:50,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1323, PETRI_PLACES=274, PETRI_TRANSITIONS=184} [2024-06-28 02:55:50,034 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 02:55:50,034 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 184 transitions, 1323 flow [2024-06-28 02:55:50,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:50,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:50,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:50,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 02:55:50,035 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:50,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:50,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1886892230, now seen corresponding path program 38 times [2024-06-28 02:55:50,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:50,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084799800] [2024-06-28 02:55:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:50,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:51,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:51,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084799800] [2024-06-28 02:55:51,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084799800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:51,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:51,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:51,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774065757] [2024-06-28 02:55:51,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:51,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:51,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:51,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:51,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:51,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:51,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 184 transitions, 1323 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:51,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:51,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:51,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:52,239 INFO L124 PetriNetUnfolderBase]: 511/1101 cut-off events. [2024-06-28 02:55:52,240 INFO L125 PetriNetUnfolderBase]: For 220677/220677 co-relation queries the response was YES. [2024-06-28 02:55:52,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 1101 events. 511/1101 cut-off events. For 220677/220677 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6584 event pairs, 188 based on Foata normal form. 8/1108 useless extension candidates. Maximal degree in co-relation 7447. Up to 950 conditions per place. [2024-06-28 02:55:52,248 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 161 selfloop transitions, 25 changer transitions 9/198 dead transitions. [2024-06-28 02:55:52,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 198 transitions, 1777 flow [2024-06-28 02:55:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:52,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:55:52,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 02:55:52,249 INFO L175 Difference]: Start difference. First operand has 274 places, 184 transitions, 1323 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:55:52,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 198 transitions, 1777 flow [2024-06-28 02:55:52,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 198 transitions, 1717 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:55:52,709 INFO L231 Difference]: Finished difference. Result has 270 places, 178 transitions, 1279 flow [2024-06-28 02:55:52,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1279, PETRI_PLACES=270, PETRI_TRANSITIONS=178} [2024-06-28 02:55:52,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-28 02:55:52,709 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 178 transitions, 1279 flow [2024-06-28 02:55:52,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:52,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:52,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:52,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 02:55:52,710 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:52,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:52,710 INFO L85 PathProgramCache]: Analyzing trace with hash 249328144, now seen corresponding path program 39 times [2024-06-28 02:55:52,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:52,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181253416] [2024-06-28 02:55:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:52,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:54,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:54,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181253416] [2024-06-28 02:55:54,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181253416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:54,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:54,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:54,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955977023] [2024-06-28 02:55:54,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:54,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:54,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:54,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:54,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:54,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:54,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 178 transitions, 1279 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:54,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:54,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:54,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:54,871 INFO L124 PetriNetUnfolderBase]: 516/1120 cut-off events. [2024-06-28 02:55:54,871 INFO L125 PetriNetUnfolderBase]: For 231129/231129 co-relation queries the response was YES. [2024-06-28 02:55:54,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8155 conditions, 1120 events. 516/1120 cut-off events. For 231129/231129 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6750 event pairs, 195 based on Foata normal form. 6/1125 useless extension candidates. Maximal degree in co-relation 8041. Up to 952 conditions per place. [2024-06-28 02:55:54,878 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 171 selfloop transitions, 17 changer transitions 7/198 dead transitions. [2024-06-28 02:55:54,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 198 transitions, 1961 flow [2024-06-28 02:55:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 02:55:54,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 02:55:54,879 INFO L175 Difference]: Start difference. First operand has 270 places, 178 transitions, 1279 flow. Second operand 12 states and 140 transitions. [2024-06-28 02:55:54,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 198 transitions, 1961 flow [2024-06-28 02:55:55,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 198 transitions, 1897 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 02:55:55,363 INFO L231 Difference]: Finished difference. Result has 268 places, 176 transitions, 1246 flow [2024-06-28 02:55:55,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1246, PETRI_PLACES=268, PETRI_TRANSITIONS=176} [2024-06-28 02:55:55,363 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-28 02:55:55,364 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 176 transitions, 1246 flow [2024-06-28 02:55:55,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:55,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:55,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:55,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 02:55:55,364 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:55,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash 257371714, now seen corresponding path program 40 times [2024-06-28 02:55:55,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:55,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041449286] [2024-06-28 02:55:55,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:55,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:57,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:57,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041449286] [2024-06-28 02:55:57,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041449286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:57,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:57,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:57,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095598458] [2024-06-28 02:55:57,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:57,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:57,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:57,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:57,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:57,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:55:57,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 176 transitions, 1246 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:57,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:57,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:55:57,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:57,965 INFO L124 PetriNetUnfolderBase]: 509/1107 cut-off events. [2024-06-28 02:55:57,965 INFO L125 PetriNetUnfolderBase]: For 221098/221098 co-relation queries the response was YES. [2024-06-28 02:55:57,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7988 conditions, 1107 events. 509/1107 cut-off events. For 221098/221098 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6643 event pairs, 195 based on Foata normal form. 6/1112 useless extension candidates. Maximal degree in co-relation 7875. Up to 977 conditions per place. [2024-06-28 02:55:57,974 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 19 changer transitions 10/191 dead transitions. [2024-06-28 02:55:57,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 191 transitions, 1682 flow [2024-06-28 02:55:57,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:57,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 02:55:57,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 02:55:57,975 INFO L175 Difference]: Start difference. First operand has 268 places, 176 transitions, 1246 flow. Second operand 12 states and 137 transitions. [2024-06-28 02:55:57,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 191 transitions, 1682 flow [2024-06-28 02:55:58,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 191 transitions, 1639 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-28 02:55:58,483 INFO L231 Difference]: Finished difference. Result has 266 places, 173 transitions, 1222 flow [2024-06-28 02:55:58,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1222, PETRI_PLACES=266, PETRI_TRANSITIONS=173} [2024-06-28 02:55:58,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-28 02:55:58,484 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 173 transitions, 1222 flow [2024-06-28 02:55:58,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:58,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:58,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:58,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 02:55:58,484 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:58,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2086098774, now seen corresponding path program 41 times [2024-06-28 02:55:58,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:58,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993073858] [2024-06-28 02:55:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:58,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:00,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:00,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993073858] [2024-06-28 02:56:00,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993073858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:00,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:00,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:00,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051513051] [2024-06-28 02:56:00,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:00,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:00,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:00,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:00,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:00,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:00,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 173 transitions, 1222 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:00,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:00,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:00,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:00,740 INFO L124 PetriNetUnfolderBase]: 502/1094 cut-off events. [2024-06-28 02:56:00,740 INFO L125 PetriNetUnfolderBase]: For 221084/221084 co-relation queries the response was YES. [2024-06-28 02:56:00,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7939 conditions, 1094 events. 502/1094 cut-off events. For 221084/221084 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6564 event pairs, 195 based on Foata normal form. 6/1099 useless extension candidates. Maximal degree in co-relation 7827. Up to 967 conditions per place. [2024-06-28 02:56:00,749 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 157 selfloop transitions, 19 changer transitions 10/189 dead transitions. [2024-06-28 02:56:00,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 189 transitions, 1656 flow [2024-06-28 02:56:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:56:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:56:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-28 02:56:00,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36228287841191065 [2024-06-28 02:56:00,750 INFO L175 Difference]: Start difference. First operand has 266 places, 173 transitions, 1222 flow. Second operand 13 states and 146 transitions. [2024-06-28 02:56:00,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 189 transitions, 1656 flow [2024-06-28 02:56:01,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 189 transitions, 1614 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:56:01,236 INFO L231 Difference]: Finished difference. Result has 264 places, 170 transitions, 1203 flow [2024-06-28 02:56:01,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1203, PETRI_PLACES=264, PETRI_TRANSITIONS=170} [2024-06-28 02:56:01,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-28 02:56:01,237 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 170 transitions, 1203 flow [2024-06-28 02:56:01,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:01,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:01,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:01,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 02:56:01,237 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:01,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1886661590, now seen corresponding path program 42 times [2024-06-28 02:56:01,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:01,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367844751] [2024-06-28 02:56:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:01,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:03,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:03,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367844751] [2024-06-28 02:56:03,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367844751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:03,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:03,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:03,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383311317] [2024-06-28 02:56:03,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:03,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:03,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:03,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:03,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:03,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:03,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 170 transitions, 1203 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:03,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:03,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:03,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:04,405 INFO L124 PetriNetUnfolderBase]: 477/1039 cut-off events. [2024-06-28 02:56:04,405 INFO L125 PetriNetUnfolderBase]: For 200441/200441 co-relation queries the response was YES. [2024-06-28 02:56:04,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7002 conditions, 1039 events. 477/1039 cut-off events. For 200441/200441 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6142 event pairs, 187 based on Foata normal form. 8/1046 useless extension candidates. Maximal degree in co-relation 6891. Up to 926 conditions per place. [2024-06-28 02:56:04,415 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 158 selfloop transitions, 15 changer transitions 9/185 dead transitions. [2024-06-28 02:56:04,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 185 transitions, 1633 flow [2024-06-28 02:56:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:56:04,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 02:56:04,416 INFO L175 Difference]: Start difference. First operand has 264 places, 170 transitions, 1203 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:56:04,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 185 transitions, 1633 flow [2024-06-28 02:56:04,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 185 transitions, 1591 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:04,872 INFO L231 Difference]: Finished difference. Result has 260 places, 167 transitions, 1174 flow [2024-06-28 02:56:04,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1174, PETRI_PLACES=260, PETRI_TRANSITIONS=167} [2024-06-28 02:56:04,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-28 02:56:04,873 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 167 transitions, 1174 flow [2024-06-28 02:56:04,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:04,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:04,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:04,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 02:56:04,873 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:04,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:04,874 INFO L85 PathProgramCache]: Analyzing trace with hash -56546896, now seen corresponding path program 43 times [2024-06-28 02:56:04,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:04,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559581377] [2024-06-28 02:56:04,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:04,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:06,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:06,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559581377] [2024-06-28 02:56:06,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559581377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:06,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:06,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:56:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643429852] [2024-06-28 02:56:06,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:06,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:56:06,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:56:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:56:06,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:06,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 167 transitions, 1174 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:06,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:06,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:06,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:06,587 INFO L124 PetriNetUnfolderBase]: 468/1024 cut-off events. [2024-06-28 02:56:06,588 INFO L125 PetriNetUnfolderBase]: For 187422/187422 co-relation queries the response was YES. [2024-06-28 02:56:06,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6823 conditions, 1024 events. 468/1024 cut-off events. For 187422/187422 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6017 event pairs, 181 based on Foata normal form. 6/1029 useless extension candidates. Maximal degree in co-relation 6713. Up to 854 conditions per place. [2024-06-28 02:56:06,596 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 11 changer transitions 13/184 dead transitions. [2024-06-28 02:56:06,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 184 transitions, 1756 flow [2024-06-28 02:56:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:56:06,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 02:56:06,596 INFO L175 Difference]: Start difference. First operand has 260 places, 167 transitions, 1174 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:56:06,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 184 transitions, 1756 flow [2024-06-28 02:56:07,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 184 transitions, 1718 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:07,027 INFO L231 Difference]: Finished difference. Result has 256 places, 159 transitions, 1094 flow [2024-06-28 02:56:07,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1094, PETRI_PLACES=256, PETRI_TRANSITIONS=159} [2024-06-28 02:56:07,028 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-28 02:56:07,028 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 159 transitions, 1094 flow [2024-06-28 02:56:07,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:07,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:07,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:07,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 02:56:07,028 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:07,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:07,028 INFO L85 PathProgramCache]: Analyzing trace with hash -868760939, now seen corresponding path program 1 times [2024-06-28 02:56:07,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:07,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817294904] [2024-06-28 02:56:07,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:07,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:08,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:08,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:08,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817294904] [2024-06-28 02:56:08,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817294904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:08,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:08,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:08,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423173740] [2024-06-28 02:56:08,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:08,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:08,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:08,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:08,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:08,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 159 transitions, 1094 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:08,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:08,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:08,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:09,058 INFO L124 PetriNetUnfolderBase]: 453/991 cut-off events. [2024-06-28 02:56:09,058 INFO L125 PetriNetUnfolderBase]: For 184561/184561 co-relation queries the response was YES. [2024-06-28 02:56:09,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6628 conditions, 991 events. 453/991 cut-off events. For 184561/184561 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5739 event pairs, 119 based on Foata normal form. 6/996 useless extension candidates. Maximal degree in co-relation 6519. Up to 704 conditions per place. [2024-06-28 02:56:09,066 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 13 changer transitions 44/183 dead transitions. [2024-06-28 02:56:09,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 183 transitions, 1516 flow [2024-06-28 02:56:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 02:56:09,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 02:56:09,067 INFO L175 Difference]: Start difference. First operand has 256 places, 159 transitions, 1094 flow. Second operand 12 states and 142 transitions. [2024-06-28 02:56:09,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 183 transitions, 1516 flow [2024-06-28 02:56:09,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 183 transitions, 1447 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-06-28 02:56:09,367 INFO L231 Difference]: Finished difference. Result has 246 places, 132 transitions, 897 flow [2024-06-28 02:56:09,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=897, PETRI_PLACES=246, PETRI_TRANSITIONS=132} [2024-06-28 02:56:09,367 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-28 02:56:09,367 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 132 transitions, 897 flow [2024-06-28 02:56:09,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:09,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:09,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:09,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 02:56:09,367 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:09,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:09,368 INFO L85 PathProgramCache]: Analyzing trace with hash 22046997, now seen corresponding path program 2 times [2024-06-28 02:56:09,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:09,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559362876] [2024-06-28 02:56:09,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:09,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:10,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:10,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559362876] [2024-06-28 02:56:10,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559362876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:10,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:10,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:10,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989470487] [2024-06-28 02:56:10,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:10,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:10,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:10,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:10,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:10,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:10,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 132 transitions, 897 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:10,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:10,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:10,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:11,281 INFO L124 PetriNetUnfolderBase]: 361/793 cut-off events. [2024-06-28 02:56:11,281 INFO L125 PetriNetUnfolderBase]: For 165161/165165 co-relation queries the response was YES. [2024-06-28 02:56:11,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 793 events. 361/793 cut-off events. For 165161/165165 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4322 event pairs, 113 based on Foata normal form. 10/802 useless extension candidates. Maximal degree in co-relation 5619. Up to 651 conditions per place. [2024-06-28 02:56:11,288 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 20 changer transitions 16/150 dead transitions. [2024-06-28 02:56:11,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 150 transitions, 1233 flow [2024-06-28 02:56:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 02:56:11,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 02:56:11,289 INFO L175 Difference]: Start difference. First operand has 246 places, 132 transitions, 897 flow. Second operand 12 states and 136 transitions. [2024-06-28 02:56:11,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 150 transitions, 1233 flow [2024-06-28 02:56:11,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 150 transitions, 1169 flow, removed 9 selfloop flow, removed 18 redundant places. [2024-06-28 02:56:11,495 INFO L231 Difference]: Finished difference. Result has 212 places, 125 transitions, 837 flow [2024-06-28 02:56:11,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=837, PETRI_PLACES=212, PETRI_TRANSITIONS=125} [2024-06-28 02:56:11,496 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 02:56:11,496 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 125 transitions, 837 flow [2024-06-28 02:56:11,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:11,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:11,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:11,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 02:56:11,496 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:11,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:11,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1820075171, now seen corresponding path program 3 times [2024-06-28 02:56:11,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:11,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901916880] [2024-06-28 02:56:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:11,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:13,338 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 02:56:13,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:13,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901916880] [2024-06-28 02:56:13,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901916880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:13,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:13,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:13,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178976536] [2024-06-28 02:56:13,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:13,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:13,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:13,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:13,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:13,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:13,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 125 transitions, 837 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:13,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:13,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:13,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:13,878 INFO L124 PetriNetUnfolderBase]: 345/763 cut-off events. [2024-06-28 02:56:13,879 INFO L125 PetriNetUnfolderBase]: For 134887/134891 co-relation queries the response was YES. [2024-06-28 02:56:13,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 763 events. 345/763 cut-off events. For 134887/134891 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4136 event pairs, 111 based on Foata normal form. 10/772 useless extension candidates. Maximal degree in co-relation 5200. Up to 633 conditions per place. [2024-06-28 02:56:13,884 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 17 changer transitions 15/143 dead transitions. [2024-06-28 02:56:13,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 143 transitions, 1159 flow [2024-06-28 02:56:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 02:56:13,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 02:56:13,885 INFO L175 Difference]: Start difference. First operand has 212 places, 125 transitions, 837 flow. Second operand 12 states and 134 transitions. [2024-06-28 02:56:13,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 143 transitions, 1159 flow [2024-06-28 02:56:14,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 143 transitions, 1107 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:56:14,086 INFO L231 Difference]: Finished difference. Result has 205 places, 119 transitions, 789 flow [2024-06-28 02:56:14,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=789, PETRI_PLACES=205, PETRI_TRANSITIONS=119} [2024-06-28 02:56:14,086 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-28 02:56:14,086 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 119 transitions, 789 flow [2024-06-28 02:56:14,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:14,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:14,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:14,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 02:56:14,087 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:14,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:14,087 INFO L85 PathProgramCache]: Analyzing trace with hash -978335957, now seen corresponding path program 4 times [2024-06-28 02:56:14,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:14,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451019879] [2024-06-28 02:56:14,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:14,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:15,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:15,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451019879] [2024-06-28 02:56:15,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451019879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:15,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:15,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:15,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576209520] [2024-06-28 02:56:15,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:15,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:15,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:15,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:15,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 119 transitions, 789 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:15,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:15,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:15,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:15,877 INFO L124 PetriNetUnfolderBase]: 330/738 cut-off events. [2024-06-28 02:56:15,877 INFO L125 PetriNetUnfolderBase]: For 124273/124273 co-relation queries the response was YES. [2024-06-28 02:56:15,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5084 conditions, 738 events. 330/738 cut-off events. For 124273/124273 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4007 event pairs, 107 based on Foata normal form. 6/743 useless extension candidates. Maximal degree in co-relation 4994. Up to 603 conditions per place. [2024-06-28 02:56:15,881 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 99 selfloop transitions, 7 changer transitions 29/138 dead transitions. [2024-06-28 02:56:15,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 138 transitions, 1103 flow [2024-06-28 02:56:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 02:56:15,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 02:56:15,881 INFO L175 Difference]: Start difference. First operand has 205 places, 119 transitions, 789 flow. Second operand 12 states and 134 transitions. [2024-06-28 02:56:15,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 138 transitions, 1103 flow [2024-06-28 02:56:16,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 138 transitions, 1061 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:16,056 INFO L231 Difference]: Finished difference. Result has 199 places, 105 transitions, 663 flow [2024-06-28 02:56:16,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=663, PETRI_PLACES=199, PETRI_TRANSITIONS=105} [2024-06-28 02:56:16,056 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-28 02:56:16,056 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 105 transitions, 663 flow [2024-06-28 02:56:16,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:16,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:16,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:16,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 02:56:16,057 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:16,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:16,057 INFO L85 PathProgramCache]: Analyzing trace with hash -334428583, now seen corresponding path program 5 times [2024-06-28 02:56:16,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:16,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688590025] [2024-06-28 02:56:16,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:16,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:17,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:17,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688590025] [2024-06-28 02:56:17,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688590025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:17,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:17,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:17,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799445432] [2024-06-28 02:56:17,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:17,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:17,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:17,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:17,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:18,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:18,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 105 transitions, 663 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:18,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:18,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:18,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:18,409 INFO L124 PetriNetUnfolderBase]: 286/634 cut-off events. [2024-06-28 02:56:18,409 INFO L125 PetriNetUnfolderBase]: For 99780/99784 co-relation queries the response was YES. [2024-06-28 02:56:18,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4222 conditions, 634 events. 286/634 cut-off events. For 99780/99784 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3275 event pairs, 94 based on Foata normal form. 10/643 useless extension candidates. Maximal degree in co-relation 4147. Up to 526 conditions per place. [2024-06-28 02:56:18,414 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 87 selfloop transitions, 20 changer transitions 10/120 dead transitions. [2024-06-28 02:56:18,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 120 transitions, 931 flow [2024-06-28 02:56:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 02:56:18,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 02:56:18,414 INFO L175 Difference]: Start difference. First operand has 199 places, 105 transitions, 663 flow. Second operand 12 states and 133 transitions. [2024-06-28 02:56:18,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 120 transitions, 931 flow [2024-06-28 02:56:18,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 120 transitions, 887 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-28 02:56:18,551 INFO L231 Difference]: Finished difference. Result has 180 places, 102 transitions, 646 flow [2024-06-28 02:56:18,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=646, PETRI_PLACES=180, PETRI_TRANSITIONS=102} [2024-06-28 02:56:18,553 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-28 02:56:18,553 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 102 transitions, 646 flow [2024-06-28 02:56:18,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:18,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:18,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:18,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 02:56:18,553 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:18,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:18,554 INFO L85 PathProgramCache]: Analyzing trace with hash -339935113, now seen corresponding path program 6 times [2024-06-28 02:56:18,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:18,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810811491] [2024-06-28 02:56:18,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:18,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:20,448 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 02:56:20,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:20,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810811491] [2024-06-28 02:56:20,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810811491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:20,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:20,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:20,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618030577] [2024-06-28 02:56:20,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:20,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:20,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:20,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:20,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:20,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 102 transitions, 646 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:20,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:20,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:20,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:21,047 INFO L124 PetriNetUnfolderBase]: 279/621 cut-off events. [2024-06-28 02:56:21,047 INFO L125 PetriNetUnfolderBase]: For 85847/85851 co-relation queries the response was YES. [2024-06-28 02:56:21,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4011 conditions, 621 events. 279/621 cut-off events. For 85847/85851 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3195 event pairs, 92 based on Foata normal form. 10/630 useless extension candidates. Maximal degree in co-relation 3941. Up to 508 conditions per place. [2024-06-28 02:56:21,051 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 16 changer transitions 15/118 dead transitions. [2024-06-28 02:56:21,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 118 transitions, 912 flow [2024-06-28 02:56:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:21,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 02:56:21,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 02:56:21,051 INFO L175 Difference]: Start difference. First operand has 180 places, 102 transitions, 646 flow. Second operand 12 states and 133 transitions. [2024-06-28 02:56:21,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 118 transitions, 912 flow [2024-06-28 02:56:21,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 118 transitions, 866 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:21,180 INFO L231 Difference]: Finished difference. Result has 175 places, 96 transitions, 605 flow [2024-06-28 02:56:21,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=605, PETRI_PLACES=175, PETRI_TRANSITIONS=96} [2024-06-28 02:56:21,180 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 02:56:21,180 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 96 transitions, 605 flow [2024-06-28 02:56:21,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:21,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:21,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:21,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 02:56:21,180 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:21,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1805907481, now seen corresponding path program 7 times [2024-06-28 02:56:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:21,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199404222] [2024-06-28 02:56:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:21,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:23,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:23,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199404222] [2024-06-28 02:56:23,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199404222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:23,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:23,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:23,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664197131] [2024-06-28 02:56:23,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:23,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:23,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:23,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:23,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:23,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:23,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 96 transitions, 605 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:23,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:23,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:23,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:23,864 INFO L124 PetriNetUnfolderBase]: 250/560 cut-off events. [2024-06-28 02:56:23,864 INFO L125 PetriNetUnfolderBase]: For 69065/69065 co-relation queries the response was YES. [2024-06-28 02:56:23,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3411 conditions, 560 events. 250/560 cut-off events. For 69065/69065 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2795 event pairs, 79 based on Foata normal form. 6/565 useless extension candidates. Maximal degree in co-relation 3343. Up to 442 conditions per place. [2024-06-28 02:56:23,867 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 78 selfloop transitions, 17 changer transitions 13/111 dead transitions. [2024-06-28 02:56:23,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 111 transitions, 855 flow [2024-06-28 02:56:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:56:23,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 02:56:23,868 INFO L175 Difference]: Start difference. First operand has 175 places, 96 transitions, 605 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:56:23,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 111 transitions, 855 flow [2024-06-28 02:56:23,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 111 transitions, 812 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:56:23,948 INFO L231 Difference]: Finished difference. Result has 168 places, 91 transitions, 572 flow [2024-06-28 02:56:23,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=572, PETRI_PLACES=168, PETRI_TRANSITIONS=91} [2024-06-28 02:56:23,949 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-28 02:56:23,949 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 91 transitions, 572 flow [2024-06-28 02:56:23,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:23,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:23,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:23,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 02:56:23,949 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:23,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:23,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1458093061, now seen corresponding path program 8 times [2024-06-28 02:56:23,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:23,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343489518] [2024-06-28 02:56:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:23,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:25,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:25,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343489518] [2024-06-28 02:56:25,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343489518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:25,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:25,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:25,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027956482] [2024-06-28 02:56:25,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:25,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:25,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:25,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:25,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:25,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:25,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 91 transitions, 572 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:25,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:25,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:25,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:26,063 INFO L124 PetriNetUnfolderBase]: 241/539 cut-off events. [2024-06-28 02:56:26,064 INFO L125 PetriNetUnfolderBase]: For 62551/62551 co-relation queries the response was YES. [2024-06-28 02:56:26,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3254 conditions, 539 events. 241/539 cut-off events. For 62551/62551 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2646 event pairs, 77 based on Foata normal form. 6/544 useless extension candidates. Maximal degree in co-relation 3189. Up to 438 conditions per place. [2024-06-28 02:56:26,066 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 76 selfloop transitions, 14 changer transitions 12/105 dead transitions. [2024-06-28 02:56:26,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 105 transitions, 808 flow [2024-06-28 02:56:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:56:26,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 02:56:26,067 INFO L175 Difference]: Start difference. First operand has 168 places, 91 transitions, 572 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:56:26,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 105 transitions, 808 flow [2024-06-28 02:56:26,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 105 transitions, 764 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 02:56:26,157 INFO L231 Difference]: Finished difference. Result has 158 places, 86 transitions, 535 flow [2024-06-28 02:56:26,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=535, PETRI_PLACES=158, PETRI_TRANSITIONS=86} [2024-06-28 02:56:26,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-28 02:56:26,157 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 86 transitions, 535 flow [2024-06-28 02:56:26,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:26,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:26,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:26,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 02:56:26,158 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:26,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:26,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1357750699, now seen corresponding path program 9 times [2024-06-28 02:56:26,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:26,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872316952] [2024-06-28 02:56:26,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:26,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:28,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:28,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872316952] [2024-06-28 02:56:28,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872316952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:28,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:28,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:28,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24739931] [2024-06-28 02:56:28,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:28,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:28,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:28,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:28,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:28,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:28,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 86 transitions, 535 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:28,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:28,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:28,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:28,602 INFO L124 PetriNetUnfolderBase]: 213/483 cut-off events. [2024-06-28 02:56:28,602 INFO L125 PetriNetUnfolderBase]: For 45323/45323 co-relation queries the response was YES. [2024-06-28 02:56:28,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2662 conditions, 483 events. 213/483 cut-off events. For 45323/45323 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2302 event pairs, 64 based on Foata normal form. 6/488 useless extension candidates. Maximal degree in co-relation 2601. Up to 381 conditions per place. [2024-06-28 02:56:28,605 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 14 changer transitions 10/101 dead transitions. [2024-06-28 02:56:28,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 101 transitions, 765 flow [2024-06-28 02:56:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:56:28,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:56:28,606 INFO L175 Difference]: Start difference. First operand has 158 places, 86 transitions, 535 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:56:28,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 101 transitions, 765 flow [2024-06-28 02:56:28,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 101 transitions, 729 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:28,657 INFO L231 Difference]: Finished difference. Result has 153 places, 83 transitions, 515 flow [2024-06-28 02:56:28,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=515, PETRI_PLACES=153, PETRI_TRANSITIONS=83} [2024-06-28 02:56:28,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-28 02:56:28,658 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 83 transitions, 515 flow [2024-06-28 02:56:28,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:28,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:28,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:28,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 02:56:28,658 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:28,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:28,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1340318067, now seen corresponding path program 10 times [2024-06-28 02:56:28,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:28,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087146786] [2024-06-28 02:56:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:28,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:29,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087146786] [2024-06-28 02:56:29,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087146786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:29,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:29,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:56:29,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891371452] [2024-06-28 02:56:29,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:29,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:56:29,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:29,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:56:29,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:56:29,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:29,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 83 transitions, 515 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:29,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:29,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:29,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:30,210 INFO L124 PetriNetUnfolderBase]: 206/470 cut-off events. [2024-06-28 02:56:30,210 INFO L125 PetriNetUnfolderBase]: For 40527/40527 co-relation queries the response was YES. [2024-06-28 02:56:30,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2547 conditions, 470 events. 206/470 cut-off events. For 40527/40527 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2212 event pairs, 60 based on Foata normal form. 6/475 useless extension candidates. Maximal degree in co-relation 2489. Up to 364 conditions per place. [2024-06-28 02:56:30,212 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 9 changer transitions 18/98 dead transitions. [2024-06-28 02:56:30,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 98 transitions, 739 flow [2024-06-28 02:56:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:30,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:56:30,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 02:56:30,213 INFO L175 Difference]: Start difference. First operand has 153 places, 83 transitions, 515 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:56:30,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 98 transitions, 739 flow [2024-06-28 02:56:30,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 98 transitions, 705 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:30,252 INFO L231 Difference]: Finished difference. Result has 147 places, 75 transitions, 460 flow [2024-06-28 02:56:30,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=460, PETRI_PLACES=147, PETRI_TRANSITIONS=75} [2024-06-28 02:56:30,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-28 02:56:30,253 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 75 transitions, 460 flow [2024-06-28 02:56:30,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:30,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:30,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:30,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 02:56:30,253 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:30,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:30,254 INFO L85 PathProgramCache]: Analyzing trace with hash -286415069, now seen corresponding path program 11 times [2024-06-28 02:56:30,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:30,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782789854] [2024-06-28 02:56:30,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:30,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:31,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:31,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782789854] [2024-06-28 02:56:31,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782789854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:31,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:31,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:31,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016054946] [2024-06-28 02:56:31,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:31,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:31,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:31,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:31,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:32,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:32,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 75 transitions, 460 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:32,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:32,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:32,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:32,384 INFO L124 PetriNetUnfolderBase]: 186/426 cut-off events. [2024-06-28 02:56:32,384 INFO L125 PetriNetUnfolderBase]: For 37429/37429 co-relation queries the response was YES. [2024-06-28 02:56:32,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 426 events. 186/426 cut-off events. For 37429/37429 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1948 event pairs, 58 based on Foata normal form. 6/431 useless extension candidates. Maximal degree in co-relation 2311. Up to 335 conditions per place. [2024-06-28 02:56:32,386 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 58 selfloop transitions, 3 changer transitions 27/91 dead transitions. [2024-06-28 02:56:32,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 91 transitions, 672 flow [2024-06-28 02:56:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:32,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 02:56:32,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 02:56:32,387 INFO L175 Difference]: Start difference. First operand has 147 places, 75 transitions, 460 flow. Second operand 12 states and 129 transitions. [2024-06-28 02:56:32,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 91 transitions, 672 flow [2024-06-28 02:56:32,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 91 transitions, 642 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:32,429 INFO L231 Difference]: Finished difference. Result has 136 places, 63 transitions, 368 flow [2024-06-28 02:56:32,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=368, PETRI_PLACES=136, PETRI_TRANSITIONS=63} [2024-06-28 02:56:32,429 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-28 02:56:32,429 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 63 transitions, 368 flow [2024-06-28 02:56:32,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:32,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:32,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:32,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 02:56:32,429 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:32,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1338444217, now seen corresponding path program 12 times [2024-06-28 02:56:32,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:32,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648595059] [2024-06-28 02:56:32,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:32,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:34,338 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 02:56:34,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:34,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648595059] [2024-06-28 02:56:34,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648595059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:34,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:34,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:34,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133991903] [2024-06-28 02:56:34,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:34,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:34,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:34,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:34,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:34,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:34,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 63 transitions, 368 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:34,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:34,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:34,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:34,843 INFO L124 PetriNetUnfolderBase]: 166/377 cut-off events. [2024-06-28 02:56:34,843 INFO L125 PetriNetUnfolderBase]: For 30233/30233 co-relation queries the response was YES. [2024-06-28 02:56:34,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 377 events. 166/377 cut-off events. For 30233/30233 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1693 event pairs, 58 based on Foata normal form. 6/383 useless extension candidates. Maximal degree in co-relation 2031. Up to 298 conditions per place. [2024-06-28 02:56:34,844 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 51 selfloop transitions, 12 changer transitions 10/76 dead transitions. [2024-06-28 02:56:34,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 76 transitions, 542 flow [2024-06-28 02:56:34,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:34,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 02:56:34,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 02:56:34,845 INFO L175 Difference]: Start difference. First operand has 136 places, 63 transitions, 368 flow. Second operand 12 states and 129 transitions. [2024-06-28 02:56:34,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 76 transitions, 542 flow [2024-06-28 02:56:34,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 76 transitions, 512 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-28 02:56:34,868 INFO L231 Difference]: Finished difference. Result has 115 places, 60 transitions, 351 flow [2024-06-28 02:56:34,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=351, PETRI_PLACES=115, PETRI_TRANSITIONS=60} [2024-06-28 02:56:34,868 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-28 02:56:34,868 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 60 transitions, 351 flow [2024-06-28 02:56:34,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:34,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:34,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:34,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 02:56:34,868 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:34,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:34,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1334024469, now seen corresponding path program 13 times [2024-06-28 02:56:34,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:34,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130983146] [2024-06-28 02:56:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:34,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:36,501 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 02:56:36,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:36,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130983146] [2024-06-28 02:56:36,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130983146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:36,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:36,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:36,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907055909] [2024-06-28 02:56:36,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:36,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:36,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:36,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:36,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:36,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:36,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 60 transitions, 351 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:36,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:36,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:36,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:36,904 INFO L124 PetriNetUnfolderBase]: 159/364 cut-off events. [2024-06-28 02:56:36,904 INFO L125 PetriNetUnfolderBase]: For 21548/21548 co-relation queries the response was YES. [2024-06-28 02:56:36,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1882 conditions, 364 events. 159/364 cut-off events. For 21548/21548 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1619 event pairs, 56 based on Foata normal form. 6/370 useless extension candidates. Maximal degree in co-relation 1840. Up to 280 conditions per place. [2024-06-28 02:56:36,905 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 48 selfloop transitions, 9 changer transitions 14/74 dead transitions. [2024-06-28 02:56:36,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 74 transitions, 523 flow [2024-06-28 02:56:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 02:56:36,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 02:56:36,906 INFO L175 Difference]: Start difference. First operand has 115 places, 60 transitions, 351 flow. Second operand 12 states and 129 transitions. [2024-06-28 02:56:36,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 74 transitions, 523 flow [2024-06-28 02:56:36,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 74 transitions, 493 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:36,922 INFO L231 Difference]: Finished difference. Result has 111 places, 55 transitions, 318 flow [2024-06-28 02:56:36,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=318, PETRI_PLACES=111, PETRI_TRANSITIONS=55} [2024-06-28 02:56:36,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-28 02:56:36,922 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 55 transitions, 318 flow [2024-06-28 02:56:36,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:36,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:36,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:36,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 02:56:36,923 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:36,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:36,923 INFO L85 PathProgramCache]: Analyzing trace with hash 385125413, now seen corresponding path program 14 times [2024-06-28 02:56:36,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:36,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263018666] [2024-06-28 02:56:36,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:36,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:39,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:39,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263018666] [2024-06-28 02:56:39,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263018666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:39,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:39,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:39,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464085162] [2024-06-28 02:56:39,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:39,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:39,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:39,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:39,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:39,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:39,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 55 transitions, 318 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:39,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:39,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:39,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:39,525 INFO L124 PetriNetUnfolderBase]: 132/305 cut-off events. [2024-06-28 02:56:39,525 INFO L125 PetriNetUnfolderBase]: For 15508/15508 co-relation queries the response was YES. [2024-06-28 02:56:39,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 305 events. 132/305 cut-off events. For 15508/15508 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1267 event pairs, 49 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 1430. Up to 237 conditions per place. [2024-06-28 02:56:39,526 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 43 selfloop transitions, 6 changer transitions 14/66 dead transitions. [2024-06-28 02:56:39,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 66 transitions, 468 flow [2024-06-28 02:56:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:39,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:56:39,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 02:56:39,527 INFO L175 Difference]: Start difference. First operand has 111 places, 55 transitions, 318 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:56:39,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 66 transitions, 468 flow [2024-06-28 02:56:39,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 66 transitions, 430 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 02:56:39,539 INFO L231 Difference]: Finished difference. Result has 102 places, 49 transitions, 269 flow [2024-06-28 02:56:39,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=269, PETRI_PLACES=102, PETRI_TRANSITIONS=49} [2024-06-28 02:56:39,539 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-28 02:56:39,539 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 49 transitions, 269 flow [2024-06-28 02:56:39,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:39,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:39,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:39,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 02:56:39,540 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:39,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:39,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2110776115, now seen corresponding path program 15 times [2024-06-28 02:56:39,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:39,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669224266] [2024-06-28 02:56:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:39,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:41,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:41,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669224266] [2024-06-28 02:56:41,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669224266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:41,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:41,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:41,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578629136] [2024-06-28 02:56:41,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:41,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:41,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:41,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:41,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:41,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:41,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 49 transitions, 269 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:41,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:41,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:41,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:41,367 INFO L124 PetriNetUnfolderBase]: 122/281 cut-off events. [2024-06-28 02:56:41,368 INFO L125 PetriNetUnfolderBase]: For 12992/12996 co-relation queries the response was YES. [2024-06-28 02:56:41,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 281 events. 122/281 cut-off events. For 12992/12996 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1121 event pairs, 43 based on Foata normal form. 6/287 useless extension candidates. Maximal degree in co-relation 1296. Up to 176 conditions per place. [2024-06-28 02:56:41,369 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 32 selfloop transitions, 16 changer transitions 11/62 dead transitions. [2024-06-28 02:56:41,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 62 transitions, 415 flow [2024-06-28 02:56:41,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 02:56:41,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 02:56:41,370 INFO L175 Difference]: Start difference. First operand has 102 places, 49 transitions, 269 flow. Second operand 12 states and 127 transitions. [2024-06-28 02:56:41,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 62 transitions, 415 flow [2024-06-28 02:56:41,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 62 transitions, 395 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 02:56:41,379 INFO L231 Difference]: Finished difference. Result has 94 places, 45 transitions, 265 flow [2024-06-28 02:56:41,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=265, PETRI_PLACES=94, PETRI_TRANSITIONS=45} [2024-06-28 02:56:41,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-28 02:56:41,380 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 45 transitions, 265 flow [2024-06-28 02:56:41,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:41,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:41,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:41,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 02:56:41,380 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:41,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:41,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1359382717, now seen corresponding path program 16 times [2024-06-28 02:56:41,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:41,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468080660] [2024-06-28 02:56:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:43,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:43,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468080660] [2024-06-28 02:56:43,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468080660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:43,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:43,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:43,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291038932] [2024-06-28 02:56:43,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:43,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:43,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:43,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:43,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:43,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 45 transitions, 265 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:43,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:43,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:43,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:43,759 INFO L124 PetriNetUnfolderBase]: 114/263 cut-off events. [2024-06-28 02:56:43,759 INFO L125 PetriNetUnfolderBase]: For 10768/10772 co-relation queries the response was YES. [2024-06-28 02:56:43,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 263 events. 114/263 cut-off events. For 10768/10772 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1019 event pairs, 43 based on Foata normal form. 10/273 useless extension candidates. Maximal degree in co-relation 1214. Up to 193 conditions per place. [2024-06-28 02:56:43,760 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 34 selfloop transitions, 11 changer transitions 10/58 dead transitions. [2024-06-28 02:56:43,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 58 transitions, 403 flow [2024-06-28 02:56:43,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:43,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 02:56:43,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 02:56:43,761 INFO L175 Difference]: Start difference. First operand has 94 places, 45 transitions, 265 flow. Second operand 12 states and 126 transitions. [2024-06-28 02:56:43,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 58 transitions, 403 flow [2024-06-28 02:56:43,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 58 transitions, 363 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:56:43,769 INFO L231 Difference]: Finished difference. Result has 88 places, 42 transitions, 235 flow [2024-06-28 02:56:43,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=235, PETRI_PLACES=88, PETRI_TRANSITIONS=42} [2024-06-28 02:56:43,769 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-28 02:56:43,769 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 42 transitions, 235 flow [2024-06-28 02:56:43,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:43,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:43,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:43,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 02:56:43,769 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:43,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1364889247, now seen corresponding path program 17 times [2024-06-28 02:56:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:43,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568199218] [2024-06-28 02:56:43,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:43,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:45,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:45,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568199218] [2024-06-28 02:56:45,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568199218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:45,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:45,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657239652] [2024-06-28 02:56:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:45,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:45,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:45,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 42 transitions, 235 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:45,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:45,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:45,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:45,963 INFO L124 PetriNetUnfolderBase]: 107/250 cut-off events. [2024-06-28 02:56:45,963 INFO L125 PetriNetUnfolderBase]: For 8696/8696 co-relation queries the response was YES. [2024-06-28 02:56:45,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 250 events. 107/250 cut-off events. For 8696/8696 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 946 event pairs, 41 based on Foata normal form. 6/256 useless extension candidates. Maximal degree in co-relation 1112. Up to 132 conditions per place. [2024-06-28 02:56:45,964 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 37 selfloop transitions, 9 changer transitions 8/57 dead transitions. [2024-06-28 02:56:45,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 57 transitions, 431 flow [2024-06-28 02:56:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:56:45,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:56:45,964 INFO L175 Difference]: Start difference. First operand has 88 places, 42 transitions, 235 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:56:45,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 57 transitions, 431 flow [2024-06-28 02:56:45,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 57 transitions, 397 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:45,970 INFO L231 Difference]: Finished difference. Result has 83 places, 38 transitions, 209 flow [2024-06-28 02:56:45,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=209, PETRI_PLACES=83, PETRI_TRANSITIONS=38} [2024-06-28 02:56:45,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-28 02:56:45,971 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 38 transitions, 209 flow [2024-06-28 02:56:45,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:45,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:45,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:45,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 02:56:45,971 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:45,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:45,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1165443307, now seen corresponding path program 18 times [2024-06-28 02:56:45,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:45,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830078661] [2024-06-28 02:56:45,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:45,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:47,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:47,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830078661] [2024-06-28 02:56:47,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830078661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:47,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:47,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:47,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571587792] [2024-06-28 02:56:47,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:47,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:47,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:47,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:47,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:48,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:48,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 38 transitions, 209 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:48,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:48,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:48,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:48,330 INFO L124 PetriNetUnfolderBase]: 81/194 cut-off events. [2024-06-28 02:56:48,330 INFO L125 PetriNetUnfolderBase]: For 5592/5592 co-relation queries the response was YES. [2024-06-28 02:56:48,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 819 conditions, 194 events. 81/194 cut-off events. For 5592/5592 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 654 event pairs, 28 based on Foata normal form. 6/200 useless extension candidates. Maximal degree in co-relation 790. Up to 132 conditions per place. [2024-06-28 02:56:48,331 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 26 selfloop transitions, 4 changer transitions 18/51 dead transitions. [2024-06-28 02:56:48,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 51 transitions, 333 flow [2024-06-28 02:56:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:48,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 02:56:48,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 02:56:48,331 INFO L175 Difference]: Start difference. First operand has 83 places, 38 transitions, 209 flow. Second operand 12 states and 124 transitions. [2024-06-28 02:56:48,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 51 transitions, 333 flow [2024-06-28 02:56:48,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 51 transitions, 308 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:56:48,335 INFO L231 Difference]: Finished difference. Result has 79 places, 31 transitions, 161 flow [2024-06-28 02:56:48,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=161, PETRI_PLACES=79, PETRI_TRANSITIONS=31} [2024-06-28 02:56:48,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-28 02:56:48,335 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 31 transitions, 161 flow [2024-06-28 02:56:48,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:48,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:48,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:48,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 02:56:48,335 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:48,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:48,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1916836705, now seen corresponding path program 19 times [2024-06-28 02:56:48,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:48,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360981113] [2024-06-28 02:56:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:48,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:49,963 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 02:56:49,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:49,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360981113] [2024-06-28 02:56:49,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360981113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:49,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:49,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:49,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293090945] [2024-06-28 02:56:49,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:49,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:49,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:49,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:49,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:50,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:50,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 31 transitions, 161 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:50,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:50,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:50,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:50,424 INFO L124 PetriNetUnfolderBase]: 70/167 cut-off events. [2024-06-28 02:56:50,425 INFO L125 PetriNetUnfolderBase]: For 4316/4316 co-relation queries the response was YES. [2024-06-28 02:56:50,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 167 events. 70/167 cut-off events. For 4316/4316 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 524 event pairs, 28 based on Foata normal form. 6/173 useless extension candidates. Maximal degree in co-relation 670. Up to 95 conditions per place. [2024-06-28 02:56:50,425 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 19 selfloop transitions, 12 changer transitions 10/44 dead transitions. [2024-06-28 02:56:50,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 44 transitions, 271 flow [2024-06-28 02:56:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:50,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:50,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-28 02:56:50,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-28 02:56:50,426 INFO L175 Difference]: Start difference. First operand has 79 places, 31 transitions, 161 flow. Second operand 12 states and 121 transitions. [2024-06-28 02:56:50,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 44 transitions, 271 flow [2024-06-28 02:56:50,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 44 transitions, 249 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:50,428 INFO L231 Difference]: Finished difference. Result has 65 places, 28 transitions, 152 flow [2024-06-28 02:56:50,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=152, PETRI_PLACES=65, PETRI_TRANSITIONS=28} [2024-06-28 02:56:50,428 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-28 02:56:50,428 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 28 transitions, 152 flow [2024-06-28 02:56:50,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:50,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:50,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:50,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-28 02:56:50,429 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:50,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:50,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1911330175, now seen corresponding path program 20 times [2024-06-28 02:56:50,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:50,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354230025] [2024-06-28 02:56:50,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:50,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:52,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354230025] [2024-06-28 02:56:52,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354230025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:52,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:52,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:52,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908841873] [2024-06-28 02:56:52,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:52,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:52,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:52,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:52,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:52,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:52,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 28 transitions, 152 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:52,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:52,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:52,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:52,730 INFO L124 PetriNetUnfolderBase]: 48/121 cut-off events. [2024-06-28 02:56:52,732 INFO L125 PetriNetUnfolderBase]: For 1544/1544 co-relation queries the response was YES. [2024-06-28 02:56:52,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 121 events. 48/121 cut-off events. For 1544/1544 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 305 event pairs, 4 based on Foata normal form. 6/127 useless extension candidates. Maximal degree in co-relation 410. Up to 38 conditions per place. [2024-06-28 02:56:52,733 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 18 selfloop transitions, 9 changer transitions 12/42 dead transitions. [2024-06-28 02:56:52,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 42 transitions, 260 flow [2024-06-28 02:56:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-28 02:56:52,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 02:56:52,734 INFO L175 Difference]: Start difference. First operand has 65 places, 28 transitions, 152 flow. Second operand 12 states and 120 transitions. [2024-06-28 02:56:52,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 42 transitions, 260 flow [2024-06-28 02:56:52,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 42 transitions, 230 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:52,735 INFO L231 Difference]: Finished difference. Result has 61 places, 22 transitions, 115 flow [2024-06-28 02:56:52,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=115, PETRI_PLACES=61, PETRI_TRANSITIONS=22} [2024-06-28 02:56:52,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-28 02:56:52,736 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 22 transitions, 115 flow [2024-06-28 02:56:52,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:52,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:52,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:52,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-28 02:56:52,736 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:52,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2018864757, now seen corresponding path program 21 times [2024-06-28 02:56:52,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:52,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769415063] [2024-06-28 02:56:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:52,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:54,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:54,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769415063] [2024-06-28 02:56:54,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769415063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:54,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:54,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:54,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612396572] [2024-06-28 02:56:54,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:54,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:54,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:54,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:54,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:54,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 02:56:54,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 22 transitions, 115 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:54,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:54,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 02:56:54,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:54,935 INFO L124 PetriNetUnfolderBase]: 20/59 cut-off events. [2024-06-28 02:56:54,935 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2024-06-28 02:56:54,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 59 events. 20/59 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 6/65 useless extension candidates. Maximal degree in co-relation 162. Up to 24 conditions per place. [2024-06-28 02:56:54,936 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-28 02:56:54,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 30 transitions, 157 flow [2024-06-28 02:56:54,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-28 02:56:54,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-28 02:56:54,936 INFO L175 Difference]: Start difference. First operand has 61 places, 22 transitions, 115 flow. Second operand 12 states and 112 transitions. [2024-06-28 02:56:54,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 30 transitions, 157 flow [2024-06-28 02:56:54,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 30 transitions, 121 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-28 02:56:54,937 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-28 02:56:54,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-28 02:56:54,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-28 02:56:54,937 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-28 02:56:54,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:54,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 02:56:54,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 02:56:54,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 02:56:54,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 02:56:54,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-28 02:56:54,951 INFO L445 BasicCegarLoop]: Path program histogram: [43, 34, 24, 21, 19, 18, 17, 10, 6, 6, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:54,954 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:56:54,954 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:56:54,957 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 02:56:54,957 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 02:56:54,958 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:56:54 BasicIcfg [2024-06-28 02:56:54,958 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:56:54,958 INFO L158 Benchmark]: Toolchain (without parser) took 514110.26ms. Allocated memory was 161.5MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 133.1MB in the beginning and 1.0GB in the end (delta: -874.7MB). Peak memory consumption was 348.4MB. Max. memory is 16.1GB. [2024-06-28 02:56:54,958 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 161.5MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:56:54,958 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 161.5MB. Free memory is still 91.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:56:54,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.54ms. Allocated memory is still 161.5MB. Free memory was 133.1MB in the beginning and 97.8MB in the end (delta: 35.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-28 02:56:54,959 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.46ms. Allocated memory is still 161.5MB. Free memory was 97.8MB in the beginning and 94.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:56:54,959 INFO L158 Benchmark]: Boogie Preprocessor took 73.12ms. Allocated memory is still 161.5MB. Free memory was 94.8MB in the beginning and 90.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 02:56:54,959 INFO L158 Benchmark]: RCFGBuilder took 567.41ms. Allocated memory is still 161.5MB. Free memory was 90.9MB in the beginning and 117.0MB in the end (delta: -26.0MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. [2024-06-28 02:56:54,959 INFO L158 Benchmark]: TraceAbstraction took 512837.88ms. Allocated memory was 161.5MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 116.1MB in the beginning and 1.0GB in the end (delta: -891.7MB). Peak memory consumption was 330.7MB. Max. memory is 16.1GB. [2024-06-28 02:56:54,960 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 161.5MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 161.5MB. Free memory is still 91.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 551.54ms. Allocated memory is still 161.5MB. Free memory was 133.1MB in the beginning and 97.8MB in the end (delta: 35.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.46ms. Allocated memory is still 161.5MB. Free memory was 97.8MB in the beginning and 94.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.12ms. Allocated memory is still 161.5MB. Free memory was 94.8MB in the beginning and 90.9MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 567.41ms. Allocated memory is still 161.5MB. Free memory was 90.9MB in the beginning and 117.0MB in the end (delta: -26.0MB). Peak memory consumption was 51.2MB. Max. memory is 16.1GB. * TraceAbstraction took 512837.88ms. Allocated memory was 161.5MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 116.1MB in the beginning and 1.0GB in the end (delta: -891.7MB). Peak memory consumption was 330.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 512.8s, OverallIterations: 240, TraceHistogramMax: 1, PathProgramHistogramMax: 43, EmptinessCheckTime: 0.0s, AutomataDifference: 213.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16305 SdHoareTripleChecker+Valid, 68.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13808 mSDsluCounter, 10181 SdHoareTripleChecker+Invalid, 60.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9277 mSDsCounter, 2931 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113969 IncrementalHoareTripleChecker+Invalid, 116900 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2931 mSolverCounterUnsat, 904 mSDtfsCounter, 113969 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2882 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2874 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6405 ImplicationChecksByTransitivity, 94.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3418occurred in iteration=121, InterpolantAutomatonStates: 2498, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 296.2s InterpolantComputationTime, 3995 NumberOfCodeBlocks, 3995 NumberOfCodeBlocksAsserted, 240 NumberOfCheckSat, 3755 ConstructedInterpolants, 0 QuantifiedInterpolants, 208835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 240 InterpolantComputations, 240 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 02:56:55,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE