./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi008.oepc.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/rfi008.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi008.oepc.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:32:30,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:32:30,253 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:32:30,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:32:30,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:32:30,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:32:30,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:32:30,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:32:30,283 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:32:30,286 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:32:30,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:32:30,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:32:30,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:32:30,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:32:30,288 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:32:30,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:32:30,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:32:30,289 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:32:30,289 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:32:30,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:32:30,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:32:30,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:32:30,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:32:30,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:32:30,290 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:32:30,291 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:32:30,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:32:30,291 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:32:30,291 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:32:30,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:32:30,292 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:32:30,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:32:30,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:32:30,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:32:30,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:32:30,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:32:30,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:32:30,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:32:30,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:32:30,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:32:30,294 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:32:30,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:32:30,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:32:30,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:32:30,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:32:30,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:32:30,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:32:30,511 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:32:30,511 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:32:30,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-27 22:32:31,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:32:31,822 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:32:31,823 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-27 22:32:31,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/943ce3460/8e627c9562384b30b7b183aa31180d23/FLAG7bcdeaf7a [2024-06-27 22:32:31,845 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/943ce3460/8e627c9562384b30b7b183aa31180d23 [2024-06-27 22:32:31,846 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:32:31,847 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:32:31,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi008.oepc.yml/witness.yml [2024-06-27 22:32:31,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:32:31,919 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:32:31,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:32:31,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:32:31,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:32:31,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:32:31" (1/2) ... [2024-06-27 22:32:31,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c528fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:31, skipping insertion in model container [2024-06-27 22:32:31,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:32:31" (1/2) ... [2024-06-27 22:32:31,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b5f6888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:31, skipping insertion in model container [2024-06-27 22:32:31,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:32:31" (2/2) ... [2024-06-27 22:32:31,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c528fd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:31, skipping insertion in model container [2024-06-27 22:32:31,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:32:31" (2/2) ... [2024-06-27 22:32:31,933 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:32:31,967 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:32:31,980 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ! multithreaded || (((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:32:31,980 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ! multithreaded || (((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:32:31,980 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:32:31,981 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-27 22:32:32,012 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:32:32,157 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i[988,1001] [2024-06-27 22:32:32,302 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:32:32,310 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:32:32,338 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i[988,1001] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:32:32,434 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:32:32,470 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:32:32,475 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:32 WrapperNode [2024-06-27 22:32:32,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:32:32,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:32:32,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:32:32,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:32:32,495 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 27.06 10:32:32" (1/1) ... [2024-06-27 22:32:32,533 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 27.06 10:32:32" (1/1) ... [2024-06-27 22:32:32,584 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-06-27 22:32:32,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:32:32,593 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:32:32,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:32:32,594 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:32:32,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:32" (1/1) ... [2024-06-27 22:32:32,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:32" (1/1) ... [2024-06-27 22:32:32,620 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:32" (1/1) ... [2024-06-27 22:32:32,640 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]. [2024-06-27 22:32:32,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:32" (1/1) ... [2024-06-27 22:32:32,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:32" (1/1) ... [2024-06-27 22:32:32,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:32" (1/1) ... [2024-06-27 22:32:32,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:32" (1/1) ... [2024-06-27 22:32:32,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:32" (1/1) ... [2024-06-27 22:32:32,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:32" (1/1) ... [2024-06-27 22:32:32,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:32:32,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:32:32,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:32:32,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:32:32,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:32" (1/1) ... [2024-06-27 22:32:32,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:32:32,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:32:32,776 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) [2024-06-27 22:32:32,823 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 [2024-06-27 22:32:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:32:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:32:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:32:32,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:32:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:32:32,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:32:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:32:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:32:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:32:32,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:32:32,839 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:32:32,937 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:32:32,939 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:32:33,213 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:32:33,214 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:32:33,368 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:32:33,369 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:32:33,369 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:32:33 BoogieIcfgContainer [2024-06-27 22:32:33,369 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:32:33,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:32:33,372 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:32:33,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:32:33,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:32:31" (1/4) ... [2024-06-27 22:32:33,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf59da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:32:33, skipping insertion in model container [2024-06-27 22:32:33,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:32:31" (2/4) ... [2024-06-27 22:32:33,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf59da7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:32:33, skipping insertion in model container [2024-06-27 22:32:33,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:32" (3/4) ... [2024-06-27 22:32:33,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf59da7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:32:33, skipping insertion in model container [2024-06-27 22:32:33,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:32:33" (4/4) ... [2024-06-27 22:32:33,378 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.oepc.i [2024-06-27 22:32:33,392 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:32:33,392 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:32:33,392 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:32:33,431 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:32:33,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 22:32:33,518 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 22:32:33,518 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:32:33,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 22:32:33,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 22:32:33,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 22:32:33,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:32:33,545 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;@233393c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:32:33,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:32:33,549 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:32:33,549 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:32:33,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:32:33,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:33,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:32:33,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:33,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash 351384175, now seen corresponding path program 1 times [2024-06-27 22:32:33,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:33,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330443195] [2024-06-27 22:32:33,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:33,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:34,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:34,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330443195] [2024-06-27 22:32:34,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330443195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:34,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:34,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:32:34,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549104347] [2024-06-27 22:32:34,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:34,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:32:34,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:34,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:32:34,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:32:34,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 22:32:34,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:34,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:34,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 22:32:34,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:34,896 INFO L124 PetriNetUnfolderBase]: 460/928 cut-off events. [2024-06-27 22:32:34,896 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 22:32:34,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1716 conditions, 928 events. 460/928 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5256 event pairs, 362 based on Foata normal form. 35/877 useless extension candidates. Maximal degree in co-relation 1705. Up to 761 conditions per place. [2024-06-27 22:32:34,906 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 30 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-06-27 22:32:34,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 163 flow [2024-06-27 22:32:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:32:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:32:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-27 22:32:34,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2024-06-27 22:32:34,919 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 77 transitions. [2024-06-27 22:32:34,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 163 flow [2024-06-27 22:32:34,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:34,923 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 95 flow [2024-06-27 22:32:34,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-06-27 22:32:34,927 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 22:32:34,927 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 95 flow [2024-06-27 22:32:34,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:34,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:34,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:34,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:32:34,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:34,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:34,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1622136343, now seen corresponding path program 1 times [2024-06-27 22:32:34,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:34,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812745236] [2024-06-27 22:32:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:34,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:35,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:35,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812745236] [2024-06-27 22:32:35,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812745236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:35,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:35,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:32:35,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808257869] [2024-06-27 22:32:35,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:35,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:32:35,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:35,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:32:35,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:32:35,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 22:32:35,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:35,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:35,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 22:32:35,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:35,767 INFO L124 PetriNetUnfolderBase]: 462/930 cut-off events. [2024-06-27 22:32:35,768 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-06-27 22:32:35,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 930 events. 462/930 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5153 event pairs, 264 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 1890. Up to 753 conditions per place. [2024-06-27 22:32:35,773 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 36 selfloop transitions, 6 changer transitions 1/54 dead transitions. [2024-06-27 22:32:35,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 229 flow [2024-06-27 22:32:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:32:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:32:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-27 22:32:35,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6418918918918919 [2024-06-27 22:32:35,776 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 95 flow. Second operand 4 states and 95 transitions. [2024-06-27 22:32:35,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 229 flow [2024-06-27 22:32:35,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:35,779 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 141 flow [2024-06-27 22:32:35,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-27 22:32:35,780 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-27 22:32:35,781 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 141 flow [2024-06-27 22:32:35,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:35,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:35,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:35,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:32:35,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:35,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:35,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1253381954, now seen corresponding path program 1 times [2024-06-27 22:32:35,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:35,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906485681] [2024-06-27 22:32:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:35,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:36,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:36,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906485681] [2024-06-27 22:32:36,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906485681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:36,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:36,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:36,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847912117] [2024-06-27 22:32:36,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:36,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:36,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:36,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 22:32:36,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2024-06-27 22:32:36,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:36,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 22:32:36,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:37,157 INFO L124 PetriNetUnfolderBase]: 466/945 cut-off events. [2024-06-27 22:32:37,158 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2024-06-27 22:32:37,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 945 events. 466/945 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5279 event pairs, 186 based on Foata normal form. 4/873 useless extension candidates. Maximal degree in co-relation 2104. Up to 725 conditions per place. [2024-06-27 22:32:37,162 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 44 selfloop transitions, 8 changer transitions 2/65 dead transitions. [2024-06-27 22:32:37,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 311 flow [2024-06-27 22:32:37,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 22:32:37,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6432432432432432 [2024-06-27 22:32:37,164 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 141 flow. Second operand 5 states and 119 transitions. [2024-06-27 22:32:37,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 311 flow [2024-06-27 22:32:37,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 304 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:37,166 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 169 flow [2024-06-27 22:32:37,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-27 22:32:37,166 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-27 22:32:37,167 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 169 flow [2024-06-27 22:32:37,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2024-06-27 22:32:37,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:37,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:37,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:32:37,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:37,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:37,168 INFO L85 PathProgramCache]: Analyzing trace with hash -339370952, now seen corresponding path program 1 times [2024-06-27 22:32:37,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:37,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967493497] [2024-06-27 22:32:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:37,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:37,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:37,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967493497] [2024-06-27 22:32:37,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967493497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:37,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:37,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:32:37,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837269327] [2024-06-27 22:32:37,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:37,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:32:37,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:37,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:32:37,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:32:37,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 37 [2024-06-27 22:32:37,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:37,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:37,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 37 [2024-06-27 22:32:37,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:37,354 INFO L124 PetriNetUnfolderBase]: 265/635 cut-off events. [2024-06-27 22:32:37,354 INFO L125 PetriNetUnfolderBase]: For 226/227 co-relation queries the response was YES. [2024-06-27 22:32:37,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 635 events. 265/635 cut-off events. For 226/227 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3724 event pairs, 137 based on Foata normal form. 1/589 useless extension candidates. Maximal degree in co-relation 1327. Up to 394 conditions per place. [2024-06-27 22:32:37,358 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 28 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-06-27 22:32:37,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 255 flow [2024-06-27 22:32:37,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:32:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:32:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-06-27 22:32:37,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2024-06-27 22:32:37,360 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 169 flow. Second operand 3 states and 83 transitions. [2024-06-27 22:32:37,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 255 flow [2024-06-27 22:32:37,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 238 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:37,362 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 156 flow [2024-06-27 22:32:37,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-06-27 22:32:37,363 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-27 22:32:37,363 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 156 flow [2024-06-27 22:32:37,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:37,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:37,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:37,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:32:37,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:37,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:37,365 INFO L85 PathProgramCache]: Analyzing trace with hash -339371834, now seen corresponding path program 1 times [2024-06-27 22:32:37,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:37,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459019511] [2024-06-27 22:32:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:37,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:37,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:37,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459019511] [2024-06-27 22:32:37,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459019511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:37,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:37,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:37,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702034148] [2024-06-27 22:32:37,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:37,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:37,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:37,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:37,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:38,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:38,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:38,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:38,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:38,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:38,337 INFO L124 PetriNetUnfolderBase]: 651/1257 cut-off events. [2024-06-27 22:32:38,337 INFO L125 PetriNetUnfolderBase]: For 792/792 co-relation queries the response was YES. [2024-06-27 22:32:38,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1257 events. 651/1257 cut-off events. For 792/792 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6802 event pairs, 450 based on Foata normal form. 1/1209 useless extension candidates. Maximal degree in co-relation 2912. Up to 1050 conditions per place. [2024-06-27 22:32:38,343 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 10 changer transitions 3/59 dead transitions. [2024-06-27 22:32:38,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 310 flow [2024-06-27 22:32:38,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-27 22:32:38,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 22:32:38,345 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 156 flow. Second operand 5 states and 92 transitions. [2024-06-27 22:32:38,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 310 flow [2024-06-27 22:32:38,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:38,348 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 199 flow [2024-06-27 22:32:38,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-27 22:32:38,348 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-06-27 22:32:38,348 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 199 flow [2024-06-27 22:32:38,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:38,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:38,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:38,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:32:38,349 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:38,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:38,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1641533739, now seen corresponding path program 1 times [2024-06-27 22:32:38,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:38,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639882153] [2024-06-27 22:32:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:38,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:40,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:40,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639882153] [2024-06-27 22:32:40,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639882153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:40,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:40,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:40,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594440718] [2024-06-27 22:32:40,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:40,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:40,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:40,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:40,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:40,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:32:40,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 199 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:40,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:40,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:32:40,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:41,094 INFO L124 PetriNetUnfolderBase]: 449/911 cut-off events. [2024-06-27 22:32:41,095 INFO L125 PetriNetUnfolderBase]: For 830/834 co-relation queries the response was YES. [2024-06-27 22:32:41,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2235 conditions, 911 events. 449/911 cut-off events. For 830/834 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4969 event pairs, 132 based on Foata normal form. 8/885 useless extension candidates. Maximal degree in co-relation 2214. Up to 652 conditions per place. [2024-06-27 22:32:41,099 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 61 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2024-06-27 22:32:41,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 463 flow [2024-06-27 22:32:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-27 22:32:41,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709459459459459 [2024-06-27 22:32:41,101 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 199 flow. Second operand 8 states and 169 transitions. [2024-06-27 22:32:41,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 463 flow [2024-06-27 22:32:41,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 451 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:41,103 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 243 flow [2024-06-27 22:32:41,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=243, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-27 22:32:41,104 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2024-06-27 22:32:41,104 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 243 flow [2024-06-27 22:32:41,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:41,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:41,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:41,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:32:41,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:41,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:41,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1931657930, now seen corresponding path program 1 times [2024-06-27 22:32:41,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:41,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249400557] [2024-06-27 22:32:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:41,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:41,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249400557] [2024-06-27 22:32:41,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249400557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:41,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:41,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847401476] [2024-06-27 22:32:41,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:41,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:41,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:41,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:41,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:41,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:41,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:41,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:41,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:41,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:42,132 INFO L124 PetriNetUnfolderBase]: 553/1075 cut-off events. [2024-06-27 22:32:42,132 INFO L125 PetriNetUnfolderBase]: For 1370/1370 co-relation queries the response was YES. [2024-06-27 22:32:42,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2881 conditions, 1075 events. 553/1075 cut-off events. For 1370/1370 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5744 event pairs, 292 based on Foata normal form. 3/1042 useless extension candidates. Maximal degree in co-relation 2856. Up to 866 conditions per place. [2024-06-27 22:32:42,138 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 50 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-06-27 22:32:42,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 417 flow [2024-06-27 22:32:42,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:42,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:42,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-27 22:32:42,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:32:42,139 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 243 flow. Second operand 6 states and 106 transitions. [2024-06-27 22:32:42,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 417 flow [2024-06-27 22:32:42,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 389 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:42,143 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 258 flow [2024-06-27 22:32:42,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-27 22:32:42,145 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-27 22:32:42,145 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 258 flow [2024-06-27 22:32:42,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:42,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:42,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:42,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:32:42,146 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:42,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:42,146 INFO L85 PathProgramCache]: Analyzing trace with hash 218676620, now seen corresponding path program 1 times [2024-06-27 22:32:42,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:42,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215764398] [2024-06-27 22:32:42,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:42,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:42,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:42,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215764398] [2024-06-27 22:32:42,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215764398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:42,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:42,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:42,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489382609] [2024-06-27 22:32:42,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:42,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:42,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:42,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:42,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:42,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:42,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:42,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:42,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:42,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:43,173 INFO L124 PetriNetUnfolderBase]: 574/1118 cut-off events. [2024-06-27 22:32:43,174 INFO L125 PetriNetUnfolderBase]: For 1504/1504 co-relation queries the response was YES. [2024-06-27 22:32:43,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3067 conditions, 1118 events. 574/1118 cut-off events. For 1504/1504 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6014 event pairs, 275 based on Foata normal form. 1/1082 useless extension candidates. Maximal degree in co-relation 3039. Up to 900 conditions per place. [2024-06-27 22:32:43,179 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 57 selfloop transitions, 22 changer transitions 0/86 dead transitions. [2024-06-27 22:32:43,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 551 flow [2024-06-27 22:32:43,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 22:32:43,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-06-27 22:32:43,182 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 258 flow. Second operand 7 states and 123 transitions. [2024-06-27 22:32:43,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 551 flow [2024-06-27 22:32:43,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 523 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:43,185 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 400 flow [2024-06-27 22:32:43,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-06-27 22:32:43,188 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-27 22:32:43,188 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 400 flow [2024-06-27 22:32:43,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:43,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:43,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:43,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:32:43,189 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:43,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:43,190 INFO L85 PathProgramCache]: Analyzing trace with hash -756853982, now seen corresponding path program 2 times [2024-06-27 22:32:43,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:43,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23766717] [2024-06-27 22:32:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:43,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:43,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:43,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:43,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23766717] [2024-06-27 22:32:43,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23766717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:43,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:43,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:43,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564462356] [2024-06-27 22:32:43,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:43,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:43,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:43,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:44,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:44,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 400 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:44,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:44,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:44,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:44,290 INFO L124 PetriNetUnfolderBase]: 603/1171 cut-off events. [2024-06-27 22:32:44,290 INFO L125 PetriNetUnfolderBase]: For 2113/2113 co-relation queries the response was YES. [2024-06-27 22:32:44,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3570 conditions, 1171 events. 603/1171 cut-off events. For 2113/2113 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6357 event pairs, 293 based on Foata normal form. 1/1133 useless extension candidates. Maximal degree in co-relation 3538. Up to 940 conditions per place. [2024-06-27 22:32:44,295 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 66 selfloop transitions, 28 changer transitions 0/101 dead transitions. [2024-06-27 22:32:44,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 101 transitions, 777 flow [2024-06-27 22:32:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-27 22:32:44,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481981981981982 [2024-06-27 22:32:44,297 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 400 flow. Second operand 6 states and 107 transitions. [2024-06-27 22:32:44,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 101 transitions, 777 flow [2024-06-27 22:32:44,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 101 transitions, 747 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:44,301 INFO L231 Difference]: Finished difference. Result has 72 places, 83 transitions, 586 flow [2024-06-27 22:32:44,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=586, PETRI_PLACES=72, PETRI_TRANSITIONS=83} [2024-06-27 22:32:44,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-27 22:32:44,303 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 83 transitions, 586 flow [2024-06-27 22:32:44,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:44,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:44,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:44,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:32:44,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:44,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash -244404216, now seen corresponding path program 3 times [2024-06-27 22:32:44,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:44,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671098041] [2024-06-27 22:32:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:44,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:44,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:44,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671098041] [2024-06-27 22:32:44,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671098041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:44,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:44,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:44,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358072239] [2024-06-27 22:32:44,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:44,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:44,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:44,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:44,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:44,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:44,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 83 transitions, 586 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:44,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:44,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:44,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:45,268 INFO L124 PetriNetUnfolderBase]: 601/1171 cut-off events. [2024-06-27 22:32:45,268 INFO L125 PetriNetUnfolderBase]: For 2792/2792 co-relation queries the response was YES. [2024-06-27 22:32:45,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3792 conditions, 1171 events. 601/1171 cut-off events. For 2792/2792 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6344 event pairs, 293 based on Foata normal form. 1/1132 useless extension candidates. Maximal degree in co-relation 3756. Up to 968 conditions per place. [2024-06-27 22:32:45,276 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 74 selfloop transitions, 16 changer transitions 0/97 dead transitions. [2024-06-27 22:32:45,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 810 flow [2024-06-27 22:32:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-27 22:32:45,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:32:45,278 INFO L175 Difference]: Start difference. First operand has 72 places, 83 transitions, 586 flow. Second operand 6 states and 102 transitions. [2024-06-27 22:32:45,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 810 flow [2024-06-27 22:32:45,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 97 transitions, 793 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:45,285 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 610 flow [2024-06-27 22:32:45,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=610, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-06-27 22:32:45,285 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2024-06-27 22:32:45,285 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 610 flow [2024-06-27 22:32:45,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:45,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:45,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:45,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:32:45,286 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:45,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:45,287 INFO L85 PathProgramCache]: Analyzing trace with hash 612711319, now seen corresponding path program 1 times [2024-06-27 22:32:45,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:45,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302775394] [2024-06-27 22:32:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:45,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:45,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:45,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:45,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302775394] [2024-06-27 22:32:45,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302775394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:45,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:45,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:45,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899448101] [2024-06-27 22:32:45,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:45,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:45,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:45,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:46,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:46,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 610 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:46,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:46,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:46,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:46,438 INFO L124 PetriNetUnfolderBase]: 637/1291 cut-off events. [2024-06-27 22:32:46,438 INFO L125 PetriNetUnfolderBase]: For 3325/3325 co-relation queries the response was YES. [2024-06-27 22:32:46,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4135 conditions, 1291 events. 637/1291 cut-off events. For 3325/3325 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7296 event pairs, 257 based on Foata normal form. 1/1237 useless extension candidates. Maximal degree in co-relation 4096. Up to 920 conditions per place. [2024-06-27 22:32:46,447 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 79 selfloop transitions, 38 changer transitions 0/124 dead transitions. [2024-06-27 22:32:46,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 124 transitions, 1024 flow [2024-06-27 22:32:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 22:32:46,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-06-27 22:32:46,449 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 610 flow. Second operand 8 states and 145 transitions. [2024-06-27 22:32:46,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 124 transitions, 1024 flow [2024-06-27 22:32:46,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 124 transitions, 990 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:46,457 INFO L231 Difference]: Finished difference. Result has 83 places, 94 transitions, 753 flow [2024-06-27 22:32:46,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=753, PETRI_PLACES=83, PETRI_TRANSITIONS=94} [2024-06-27 22:32:46,458 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-27 22:32:46,458 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 94 transitions, 753 flow [2024-06-27 22:32:46,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:46,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:46,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:46,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:32:46,458 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:46,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:46,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1844349267, now seen corresponding path program 2 times [2024-06-27 22:32:46,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:46,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866741987] [2024-06-27 22:32:46,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:46,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:47,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:47,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866741987] [2024-06-27 22:32:47,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866741987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:47,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:47,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:47,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008453287] [2024-06-27 22:32:47,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:47,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:47,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:47,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:47,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:47,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:47,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 94 transitions, 753 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:47,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:47,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:47,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:48,320 INFO L124 PetriNetUnfolderBase]: 701/1368 cut-off events. [2024-06-27 22:32:48,320 INFO L125 PetriNetUnfolderBase]: For 4544/4544 co-relation queries the response was YES. [2024-06-27 22:32:48,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4954 conditions, 1368 events. 701/1368 cut-off events. For 4544/4544 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7806 event pairs, 275 based on Foata normal form. 1/1320 useless extension candidates. Maximal degree in co-relation 4913. Up to 1036 conditions per place. [2024-06-27 22:32:48,330 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 85 selfloop transitions, 42 changer transitions 0/134 dead transitions. [2024-06-27 22:32:48,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 134 transitions, 1247 flow [2024-06-27 22:32:48,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-27 22:32:48,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:32:48,331 INFO L175 Difference]: Start difference. First operand has 83 places, 94 transitions, 753 flow. Second operand 7 states and 133 transitions. [2024-06-27 22:32:48,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 134 transitions, 1247 flow [2024-06-27 22:32:48,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 134 transitions, 1176 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:48,345 INFO L231 Difference]: Finished difference. Result has 88 places, 108 transitions, 938 flow [2024-06-27 22:32:48,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=938, PETRI_PLACES=88, PETRI_TRANSITIONS=108} [2024-06-27 22:32:48,346 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2024-06-27 22:32:48,346 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 108 transitions, 938 flow [2024-06-27 22:32:48,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:48,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:48,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:48,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:32:48,347 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:48,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:48,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1810958547, now seen corresponding path program 3 times [2024-06-27 22:32:48,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:48,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960327888] [2024-06-27 22:32:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:48,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:49,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:49,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960327888] [2024-06-27 22:32:49,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960327888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:49,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:49,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:49,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521819528] [2024-06-27 22:32:49,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:49,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:49,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:49,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:49,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:49,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:49,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 108 transitions, 938 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:49,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:49,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:49,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:49,802 INFO L124 PetriNetUnfolderBase]: 706/1387 cut-off events. [2024-06-27 22:32:49,803 INFO L125 PetriNetUnfolderBase]: For 5133/5133 co-relation queries the response was YES. [2024-06-27 22:32:49,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5239 conditions, 1387 events. 706/1387 cut-off events. For 5133/5133 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7987 event pairs, 281 based on Foata normal form. 1/1336 useless extension candidates. Maximal degree in co-relation 5196. Up to 1086 conditions per place. [2024-06-27 22:32:49,814 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 91 selfloop transitions, 34 changer transitions 0/132 dead transitions. [2024-06-27 22:32:49,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 132 transitions, 1288 flow [2024-06-27 22:32:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:49,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 22:32:49,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-06-27 22:32:49,815 INFO L175 Difference]: Start difference. First operand has 88 places, 108 transitions, 938 flow. Second operand 7 states and 129 transitions. [2024-06-27 22:32:49,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 132 transitions, 1288 flow [2024-06-27 22:32:49,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 132 transitions, 1245 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:49,855 INFO L231 Difference]: Finished difference. Result has 92 places, 110 transitions, 997 flow [2024-06-27 22:32:49,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=997, PETRI_PLACES=92, PETRI_TRANSITIONS=110} [2024-06-27 22:32:49,856 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2024-06-27 22:32:49,856 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 110 transitions, 997 flow [2024-06-27 22:32:49,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:49,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:49,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:49,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:32:49,856 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:49,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1844199320, now seen corresponding path program 1 times [2024-06-27 22:32:49,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:49,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657023406] [2024-06-27 22:32:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:49,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:50,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:50,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657023406] [2024-06-27 22:32:50,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657023406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:50,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:50,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:50,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201193264] [2024-06-27 22:32:50,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:50,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:50,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:50,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:50,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:50,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:50,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 110 transitions, 997 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:50,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:50,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:50,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:50,971 INFO L124 PetriNetUnfolderBase]: 718/1405 cut-off events. [2024-06-27 22:32:50,971 INFO L125 PetriNetUnfolderBase]: For 5576/5576 co-relation queries the response was YES. [2024-06-27 22:32:50,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5431 conditions, 1405 events. 718/1405 cut-off events. For 5576/5576 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8113 event pairs, 275 based on Foata normal form. 1/1354 useless extension candidates. Maximal degree in co-relation 5386. Up to 1081 conditions per place. [2024-06-27 22:32:50,985 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 98 selfloop transitions, 39 changer transitions 0/144 dead transitions. [2024-06-27 22:32:50,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 144 transitions, 1437 flow [2024-06-27 22:32:50,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:50,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 22:32:50,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 22:32:50,988 INFO L175 Difference]: Start difference. First operand has 92 places, 110 transitions, 997 flow. Second operand 8 states and 141 transitions. [2024-06-27 22:32:50,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 144 transitions, 1437 flow [2024-06-27 22:32:50,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 144 transitions, 1371 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:51,003 INFO L231 Difference]: Finished difference. Result has 97 places, 123 transitions, 1120 flow [2024-06-27 22:32:51,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1120, PETRI_PLACES=97, PETRI_TRANSITIONS=123} [2024-06-27 22:32:51,004 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-27 22:32:51,005 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 123 transitions, 1120 flow [2024-06-27 22:32:51,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:51,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:51,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:51,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:32:51,005 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:51,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:51,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1987785867, now seen corresponding path program 4 times [2024-06-27 22:32:51,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:51,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106071551] [2024-06-27 22:32:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:51,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:52,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:52,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106071551] [2024-06-27 22:32:52,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106071551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:52,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:52,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:52,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542188714] [2024-06-27 22:32:52,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:52,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:52,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:52,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:52,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 1120 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:52,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:52,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:52,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:52,469 INFO L124 PetriNetUnfolderBase]: 771/1506 cut-off events. [2024-06-27 22:32:52,470 INFO L125 PetriNetUnfolderBase]: For 6827/6827 co-relation queries the response was YES. [2024-06-27 22:32:52,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6207 conditions, 1506 events. 771/1506 cut-off events. For 6827/6827 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8835 event pairs, 295 based on Foata normal form. 1/1451 useless extension candidates. Maximal degree in co-relation 6158. Up to 1140 conditions per place. [2024-06-27 22:32:52,480 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 109 selfloop transitions, 46 changer transitions 0/162 dead transitions. [2024-06-27 22:32:52,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 162 transitions, 1715 flow [2024-06-27 22:32:52,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:52,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 22:32:52,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-27 22:32:52,482 INFO L175 Difference]: Start difference. First operand has 97 places, 123 transitions, 1120 flow. Second operand 8 states and 133 transitions. [2024-06-27 22:32:52,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 162 transitions, 1715 flow [2024-06-27 22:32:52,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 162 transitions, 1689 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:52,495 INFO L231 Difference]: Finished difference. Result has 105 places, 141 transitions, 1442 flow [2024-06-27 22:32:52,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1442, PETRI_PLACES=105, PETRI_TRANSITIONS=141} [2024-06-27 22:32:52,496 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 64 predicate places. [2024-06-27 22:32:52,496 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 141 transitions, 1442 flow [2024-06-27 22:32:52,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:52,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:52,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:52,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:32:52,497 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:52,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1987636137, now seen corresponding path program 5 times [2024-06-27 22:32:52,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:52,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212116421] [2024-06-27 22:32:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:53,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:53,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212116421] [2024-06-27 22:32:53,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212116421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:53,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:53,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:53,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347524481] [2024-06-27 22:32:53,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:53,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:53,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:53,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:53,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:53,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:53,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 141 transitions, 1442 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:53,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:53,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:53,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:53,909 INFO L124 PetriNetUnfolderBase]: 796/1571 cut-off events. [2024-06-27 22:32:53,909 INFO L125 PetriNetUnfolderBase]: For 8383/8383 co-relation queries the response was YES. [2024-06-27 22:32:53,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6907 conditions, 1571 events. 796/1571 cut-off events. For 8383/8383 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9448 event pairs, 301 based on Foata normal form. 1/1510 useless extension candidates. Maximal degree in co-relation 6853. Up to 1233 conditions per place. [2024-06-27 22:32:53,919 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 123 selfloop transitions, 36 changer transitions 0/166 dead transitions. [2024-06-27 22:32:53,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 166 transitions, 1934 flow [2024-06-27 22:32:53,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:53,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 22:32:53,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46332046332046334 [2024-06-27 22:32:53,920 INFO L175 Difference]: Start difference. First operand has 105 places, 141 transitions, 1442 flow. Second operand 7 states and 120 transitions. [2024-06-27 22:32:53,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 166 transitions, 1934 flow [2024-06-27 22:32:53,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 166 transitions, 1876 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:53,938 INFO L231 Difference]: Finished difference. Result has 109 places, 150 transitions, 1610 flow [2024-06-27 22:32:53,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1610, PETRI_PLACES=109, PETRI_TRANSITIONS=150} [2024-06-27 22:32:53,939 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-27 22:32:53,939 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 150 transitions, 1610 flow [2024-06-27 22:32:53,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:53,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:53,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:53,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:32:53,940 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:53,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:53,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1987635920, now seen corresponding path program 2 times [2024-06-27 22:32:53,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:53,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966778266] [2024-06-27 22:32:53,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:53,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:54,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:54,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966778266] [2024-06-27 22:32:54,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966778266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:54,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:54,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:54,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411159103] [2024-06-27 22:32:54,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:54,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:54,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:54,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:54,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:54,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 150 transitions, 1610 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:54,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:54,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:54,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:55,056 INFO L124 PetriNetUnfolderBase]: 866/1704 cut-off events. [2024-06-27 22:32:55,056 INFO L125 PetriNetUnfolderBase]: For 10093/10093 co-relation queries the response was YES. [2024-06-27 22:32:55,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7470 conditions, 1704 events. 866/1704 cut-off events. For 10093/10093 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10380 event pairs, 310 based on Foata normal form. 3/1638 useless extension candidates. Maximal degree in co-relation 7415. Up to 1251 conditions per place. [2024-06-27 22:32:55,067 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 145 selfloop transitions, 37 changer transitions 0/189 dead transitions. [2024-06-27 22:32:55,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 189 transitions, 2192 flow [2024-06-27 22:32:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 22:32:55,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-06-27 22:32:55,069 INFO L175 Difference]: Start difference. First operand has 109 places, 150 transitions, 1610 flow. Second operand 7 states and 129 transitions. [2024-06-27 22:32:55,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 189 transitions, 2192 flow [2024-06-27 22:32:55,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 189 transitions, 2127 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:55,088 INFO L231 Difference]: Finished difference. Result has 112 places, 157 transitions, 1690 flow [2024-06-27 22:32:55,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1690, PETRI_PLACES=112, PETRI_TRANSITIONS=157} [2024-06-27 22:32:55,089 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-27 22:32:55,089 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 157 transitions, 1690 flow [2024-06-27 22:32:55,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:55,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:55,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:55,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:32:55,089 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:55,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:55,090 INFO L85 PathProgramCache]: Analyzing trace with hash 127732938, now seen corresponding path program 3 times [2024-06-27 22:32:55,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:55,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56124913] [2024-06-27 22:32:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:55,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:55,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:55,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56124913] [2024-06-27 22:32:55,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56124913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:55,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:55,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612816141] [2024-06-27 22:32:55,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:55,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:55,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:55,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:55,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:55,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:55,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 157 transitions, 1690 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:55,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:55,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:55,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:56,204 INFO L124 PetriNetUnfolderBase]: 903/1771 cut-off events. [2024-06-27 22:32:56,204 INFO L125 PetriNetUnfolderBase]: For 11140/11140 co-relation queries the response was YES. [2024-06-27 22:32:56,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7908 conditions, 1771 events. 903/1771 cut-off events. For 11140/11140 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10853 event pairs, 315 based on Foata normal form. 3/1703 useless extension candidates. Maximal degree in co-relation 7852. Up to 1407 conditions per place. [2024-06-27 22:32:56,215 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 160 selfloop transitions, 17 changer transitions 0/184 dead transitions. [2024-06-27 22:32:56,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 184 transitions, 2186 flow [2024-06-27 22:32:56,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:56,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:56,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 22:32:56,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:32:56,216 INFO L175 Difference]: Start difference. First operand has 112 places, 157 transitions, 1690 flow. Second operand 7 states and 119 transitions. [2024-06-27 22:32:56,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 184 transitions, 2186 flow [2024-06-27 22:32:56,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 184 transitions, 2158 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:56,238 INFO L231 Difference]: Finished difference. Result has 117 places, 161 transitions, 1754 flow [2024-06-27 22:32:56,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1754, PETRI_PLACES=117, PETRI_TRANSITIONS=161} [2024-06-27 22:32:56,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-27 22:32:56,239 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 161 transitions, 1754 flow [2024-06-27 22:32:56,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:56,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:56,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:56,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:32:56,239 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:56,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:56,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1752383337, now seen corresponding path program 6 times [2024-06-27 22:32:56,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:56,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962469449] [2024-06-27 22:32:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:56,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:57,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:57,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:57,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962469449] [2024-06-27 22:32:57,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962469449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:57,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:57,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:57,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392112540] [2024-06-27 22:32:57,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:57,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:57,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:57,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:57,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:57,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:57,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 161 transitions, 1754 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:57,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:57,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:57,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:57,699 INFO L124 PetriNetUnfolderBase]: 901/1769 cut-off events. [2024-06-27 22:32:57,699 INFO L125 PetriNetUnfolderBase]: For 11550/11550 co-relation queries the response was YES. [2024-06-27 22:32:57,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7974 conditions, 1769 events. 901/1769 cut-off events. For 11550/11550 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10863 event pairs, 313 based on Foata normal form. 1/1699 useless extension candidates. Maximal degree in co-relation 7915. Up to 1421 conditions per place. [2024-06-27 22:32:57,711 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 150 selfloop transitions, 22 changer transitions 0/179 dead transitions. [2024-06-27 22:32:57,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 179 transitions, 2186 flow [2024-06-27 22:32:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-27 22:32:57,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2024-06-27 22:32:57,712 INFO L175 Difference]: Start difference. First operand has 117 places, 161 transitions, 1754 flow. Second operand 7 states and 117 transitions. [2024-06-27 22:32:57,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 179 transitions, 2186 flow [2024-06-27 22:32:57,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 179 transitions, 2131 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:57,732 INFO L231 Difference]: Finished difference. Result has 120 places, 163 transitions, 1789 flow [2024-06-27 22:32:57,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1789, PETRI_PLACES=120, PETRI_TRANSITIONS=163} [2024-06-27 22:32:57,733 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-06-27 22:32:57,733 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 163 transitions, 1789 flow [2024-06-27 22:32:57,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:57,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:57,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:57,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:32:57,733 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:57,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:57,733 INFO L85 PathProgramCache]: Analyzing trace with hash -897671112, now seen corresponding path program 4 times [2024-06-27 22:32:57,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:57,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332368204] [2024-06-27 22:32:57,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:57,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:58,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:58,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:58,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332368204] [2024-06-27 22:32:58,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332368204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:58,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:58,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:58,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108754204] [2024-06-27 22:32:58,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:58,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:58,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:58,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:58,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:58,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:58,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 163 transitions, 1789 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:58,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:58,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:58,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:58,918 INFO L124 PetriNetUnfolderBase]: 895/1760 cut-off events. [2024-06-27 22:32:58,918 INFO L125 PetriNetUnfolderBase]: For 11948/11948 co-relation queries the response was YES. [2024-06-27 22:32:58,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7922 conditions, 1760 events. 895/1760 cut-off events. For 11948/11948 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10806 event pairs, 311 based on Foata normal form. 3/1692 useless extension candidates. Maximal degree in co-relation 7862. Up to 1345 conditions per place. [2024-06-27 22:32:58,928 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 163 selfloop transitions, 26 changer transitions 0/196 dead transitions. [2024-06-27 22:32:58,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 196 transitions, 2320 flow [2024-06-27 22:32:58,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:58,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:58,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 22:32:58,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47876447876447875 [2024-06-27 22:32:58,941 INFO L175 Difference]: Start difference. First operand has 120 places, 163 transitions, 1789 flow. Second operand 7 states and 124 transitions. [2024-06-27 22:32:58,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 196 transitions, 2320 flow [2024-06-27 22:32:58,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 196 transitions, 2263 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:58,962 INFO L231 Difference]: Finished difference. Result has 122 places, 163 transitions, 1793 flow [2024-06-27 22:32:58,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1793, PETRI_PLACES=122, PETRI_TRANSITIONS=163} [2024-06-27 22:32:58,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2024-06-27 22:32:58,962 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 163 transitions, 1793 flow [2024-06-27 22:32:58,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:58,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:58,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:58,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:32:58,963 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:58,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:58,963 INFO L85 PathProgramCache]: Analyzing trace with hash 851394989, now seen corresponding path program 1 times [2024-06-27 22:32:58,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:58,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340423989] [2024-06-27 22:32:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:59,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:59,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340423989] [2024-06-27 22:32:59,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340423989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:59,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:59,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:59,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125703661] [2024-06-27 22:32:59,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:59,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:59,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:59,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:59,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:59,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:59,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 163 transitions, 1793 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:32:59,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:59,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:59,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:00,258 INFO L124 PetriNetUnfolderBase]: 987/1966 cut-off events. [2024-06-27 22:33:00,258 INFO L125 PetriNetUnfolderBase]: For 13023/13023 co-relation queries the response was YES. [2024-06-27 22:33:00,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8632 conditions, 1966 events. 987/1966 cut-off events. For 13023/13023 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12320 event pairs, 240 based on Foata normal form. 2/1882 useless extension candidates. Maximal degree in co-relation 8571. Up to 1379 conditions per place. [2024-06-27 22:33:00,272 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 176 selfloop transitions, 44 changer transitions 0/227 dead transitions. [2024-06-27 22:33:00,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 227 transitions, 2564 flow [2024-06-27 22:33:00,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:33:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:33:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 22:33:00,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-27 22:33:00,274 INFO L175 Difference]: Start difference. First operand has 122 places, 163 transitions, 1793 flow. Second operand 11 states and 195 transitions. [2024-06-27 22:33:00,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 227 transitions, 2564 flow [2024-06-27 22:33:00,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 227 transitions, 2479 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:00,297 INFO L231 Difference]: Finished difference. Result has 129 places, 178 transitions, 1931 flow [2024-06-27 22:33:00,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1931, PETRI_PLACES=129, PETRI_TRANSITIONS=178} [2024-06-27 22:33:00,298 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-27 22:33:00,298 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 178 transitions, 1931 flow [2024-06-27 22:33:00,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:00,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:00,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:00,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:33:00,300 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:00,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1420054107, now seen corresponding path program 2 times [2024-06-27 22:33:00,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:00,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146410501] [2024-06-27 22:33:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:00,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:01,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:01,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146410501] [2024-06-27 22:33:01,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146410501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:01,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:01,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:01,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904077738] [2024-06-27 22:33:01,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:01,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:01,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:01,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:01,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:01,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:01,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 178 transitions, 1931 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:01,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:01,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:01,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:01,723 INFO L124 PetriNetUnfolderBase]: 1075/2140 cut-off events. [2024-06-27 22:33:01,723 INFO L125 PetriNetUnfolderBase]: For 14988/14988 co-relation queries the response was YES. [2024-06-27 22:33:01,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9673 conditions, 2140 events. 1075/2140 cut-off events. For 14988/14988 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13691 event pairs, 257 based on Foata normal form. 2/2048 useless extension candidates. Maximal degree in co-relation 9609. Up to 1501 conditions per place. [2024-06-27 22:33:01,749 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 175 selfloop transitions, 47 changer transitions 0/229 dead transitions. [2024-06-27 22:33:01,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 229 transitions, 2664 flow [2024-06-27 22:33:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:33:01,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:33:01,765 INFO L175 Difference]: Start difference. First operand has 129 places, 178 transitions, 1931 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:33:01,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 229 transitions, 2664 flow [2024-06-27 22:33:01,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 229 transitions, 2576 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:01,794 INFO L231 Difference]: Finished difference. Result has 136 places, 192 transitions, 2109 flow [2024-06-27 22:33:01,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2109, PETRI_PLACES=136, PETRI_TRANSITIONS=192} [2024-06-27 22:33:01,795 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2024-06-27 22:33:01,795 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 192 transitions, 2109 flow [2024-06-27 22:33:01,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:01,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:01,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:01,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:33:01,796 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:01,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:01,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1386692961, now seen corresponding path program 1 times [2024-06-27 22:33:01,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:01,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510916214] [2024-06-27 22:33:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:01,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:02,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510916214] [2024-06-27 22:33:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510916214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:02,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:02,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:02,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121600457] [2024-06-27 22:33:02,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:02,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:02,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:02,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:02,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:02,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:02,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 192 transitions, 2109 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:02,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:02,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:02,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:03,164 INFO L124 PetriNetUnfolderBase]: 1096/2174 cut-off events. [2024-06-27 22:33:03,165 INFO L125 PetriNetUnfolderBase]: For 15888/15888 co-relation queries the response was YES. [2024-06-27 22:33:03,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9950 conditions, 2174 events. 1096/2174 cut-off events. For 15888/15888 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13999 event pairs, 280 based on Foata normal form. 1/2078 useless extension candidates. Maximal degree in co-relation 9884. Up to 1391 conditions per place. [2024-06-27 22:33:03,201 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 142 selfloop transitions, 83 changer transitions 0/232 dead transitions. [2024-06-27 22:33:03,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 232 transitions, 2791 flow [2024-06-27 22:33:03,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:03,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:33:03,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 22:33:03,217 INFO L175 Difference]: Start difference. First operand has 136 places, 192 transitions, 2109 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:33:03,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 232 transitions, 2791 flow [2024-06-27 22:33:03,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 232 transitions, 2745 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:03,254 INFO L231 Difference]: Finished difference. Result has 143 places, 199 transitions, 2321 flow [2024-06-27 22:33:03,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2321, PETRI_PLACES=143, PETRI_TRANSITIONS=199} [2024-06-27 22:33:03,255 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 102 predicate places. [2024-06-27 22:33:03,255 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 199 transitions, 2321 flow [2024-06-27 22:33:03,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:03,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:03,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:03,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:33:03,255 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:03,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:03,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1419934137, now seen corresponding path program 3 times [2024-06-27 22:33:03,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:03,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575054835] [2024-06-27 22:33:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:03,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:03,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:03,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575054835] [2024-06-27 22:33:03,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575054835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:03,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:03,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:03,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637931996] [2024-06-27 22:33:03,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:03,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:03,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:03,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:03,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:04,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:04,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 199 transitions, 2321 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:04,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:04,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:04,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:04,631 INFO L124 PetriNetUnfolderBase]: 1138/2246 cut-off events. [2024-06-27 22:33:04,631 INFO L125 PetriNetUnfolderBase]: For 18861/18861 co-relation queries the response was YES. [2024-06-27 22:33:04,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10669 conditions, 2246 events. 1138/2246 cut-off events. For 18861/18861 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14434 event pairs, 213 based on Foata normal form. 2/2152 useless extension candidates. Maximal degree in co-relation 10601. Up to 1262 conditions per place. [2024-06-27 22:33:04,647 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 148 selfloop transitions, 91 changer transitions 0/246 dead transitions. [2024-06-27 22:33:04,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 246 transitions, 3100 flow [2024-06-27 22:33:04,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:33:04,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 22:33:04,649 INFO L175 Difference]: Start difference. First operand has 143 places, 199 transitions, 2321 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:33:04,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 246 transitions, 3100 flow [2024-06-27 22:33:04,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 246 transitions, 3031 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:04,681 INFO L231 Difference]: Finished difference. Result has 149 places, 207 transitions, 2553 flow [2024-06-27 22:33:04,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2553, PETRI_PLACES=149, PETRI_TRANSITIONS=207} [2024-06-27 22:33:04,681 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-06-27 22:33:04,681 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 207 transitions, 2553 flow [2024-06-27 22:33:04,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:04,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:04,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:04,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:33:04,682 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:04,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:04,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1340371543, now seen corresponding path program 4 times [2024-06-27 22:33:04,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:04,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323132677] [2024-06-27 22:33:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:04,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:06,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:06,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323132677] [2024-06-27 22:33:06,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323132677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:06,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:06,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:06,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116256906] [2024-06-27 22:33:06,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:06,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:06,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:06,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:06,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:06,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:06,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 207 transitions, 2553 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:06,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:06,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:06,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:07,009 INFO L124 PetriNetUnfolderBase]: 1254/2437 cut-off events. [2024-06-27 22:33:07,009 INFO L125 PetriNetUnfolderBase]: For 22666/22666 co-relation queries the response was YES. [2024-06-27 22:33:07,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12292 conditions, 2437 events. 1254/2437 cut-off events. For 22666/22666 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16240 event pairs, 348 based on Foata normal form. 2/2342 useless extension candidates. Maximal degree in co-relation 12221. Up to 1842 conditions per place. [2024-06-27 22:33:07,027 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 210 selfloop transitions, 40 changer transitions 0/257 dead transitions. [2024-06-27 22:33:07,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 257 transitions, 3405 flow [2024-06-27 22:33:07,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:07,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:07,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:33:07,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 22:33:07,029 INFO L175 Difference]: Start difference. First operand has 149 places, 207 transitions, 2553 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:33:07,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 257 transitions, 3405 flow [2024-06-27 22:33:07,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 257 transitions, 3307 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:07,070 INFO L231 Difference]: Finished difference. Result has 155 places, 225 transitions, 2806 flow [2024-06-27 22:33:07,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2806, PETRI_PLACES=155, PETRI_TRANSITIONS=225} [2024-06-27 22:33:07,070 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 114 predicate places. [2024-06-27 22:33:07,070 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 225 transitions, 2806 flow [2024-06-27 22:33:07,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:07,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:07,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:07,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:33:07,071 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:07,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:07,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1340251573, now seen corresponding path program 5 times [2024-06-27 22:33:07,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:07,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662658414] [2024-06-27 22:33:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:07,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:08,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:08,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662658414] [2024-06-27 22:33:08,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662658414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:08,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:08,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:08,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673121246] [2024-06-27 22:33:08,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:08,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:08,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:08,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:08,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:08,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:08,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 225 transitions, 2806 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:08,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:08,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:08,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:09,403 INFO L124 PetriNetUnfolderBase]: 1344/2601 cut-off events. [2024-06-27 22:33:09,403 INFO L125 PetriNetUnfolderBase]: For 25006/25006 co-relation queries the response was YES. [2024-06-27 22:33:09,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13308 conditions, 2601 events. 1344/2601 cut-off events. For 25006/25006 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17541 event pairs, 361 based on Foata normal form. 2/2503 useless extension candidates. Maximal degree in co-relation 13234. Up to 1789 conditions per place. [2024-06-27 22:33:09,420 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 188 selfloop transitions, 78 changer transitions 0/273 dead transitions. [2024-06-27 22:33:09,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 273 transitions, 3691 flow [2024-06-27 22:33:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 22:33:09,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-06-27 22:33:09,421 INFO L175 Difference]: Start difference. First operand has 155 places, 225 transitions, 2806 flow. Second operand 8 states and 154 transitions. [2024-06-27 22:33:09,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 273 transitions, 3691 flow [2024-06-27 22:33:09,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 273 transitions, 3631 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:09,464 INFO L231 Difference]: Finished difference. Result has 159 places, 235 transitions, 3018 flow [2024-06-27 22:33:09,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3018, PETRI_PLACES=159, PETRI_TRANSITIONS=235} [2024-06-27 22:33:09,464 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-06-27 22:33:09,464 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 235 transitions, 3018 flow [2024-06-27 22:33:09,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:09,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:09,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:09,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:33:09,465 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:09,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:09,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1340251387, now seen corresponding path program 2 times [2024-06-27 22:33:09,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:09,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453310226] [2024-06-27 22:33:09,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:09,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:10,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:10,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453310226] [2024-06-27 22:33:10,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453310226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:10,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:10,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:10,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129978148] [2024-06-27 22:33:10,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:10,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:10,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:10,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:10,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:10,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:10,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 235 transitions, 3018 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:10,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:10,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:10,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:11,373 INFO L124 PetriNetUnfolderBase]: 1417/2765 cut-off events. [2024-06-27 22:33:11,373 INFO L125 PetriNetUnfolderBase]: For 27693/27693 co-relation queries the response was YES. [2024-06-27 22:33:11,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14206 conditions, 2765 events. 1417/2765 cut-off events. For 27693/27693 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 19068 event pairs, 385 based on Foata normal form. 1/2653 useless extension candidates. Maximal degree in co-relation 14131. Up to 1990 conditions per place. [2024-06-27 22:33:11,394 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 197 selfloop transitions, 87 changer transitions 0/291 dead transitions. [2024-06-27 22:33:11,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 291 transitions, 4021 flow [2024-06-27 22:33:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:33:11,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 22:33:11,396 INFO L175 Difference]: Start difference. First operand has 159 places, 235 transitions, 3018 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:33:11,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 291 transitions, 4021 flow [2024-06-27 22:33:11,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 291 transitions, 3937 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:11,449 INFO L231 Difference]: Finished difference. Result has 168 places, 258 transitions, 3414 flow [2024-06-27 22:33:11,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2934, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3414, PETRI_PLACES=168, PETRI_TRANSITIONS=258} [2024-06-27 22:33:11,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-27 22:33:11,449 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 258 transitions, 3414 flow [2024-06-27 22:33:11,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:11,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:11,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:11,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:33:11,450 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:11,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:11,450 INFO L85 PathProgramCache]: Analyzing trace with hash -305139253, now seen corresponding path program 6 times [2024-06-27 22:33:11,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:11,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167144756] [2024-06-27 22:33:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:11,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:12,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167144756] [2024-06-27 22:33:12,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167144756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:12,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:12,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:12,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959916729] [2024-06-27 22:33:12,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:12,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:12,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:12,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:12,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:12,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 258 transitions, 3414 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:12,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:12,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:12,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:13,265 INFO L124 PetriNetUnfolderBase]: 1427/2780 cut-off events. [2024-06-27 22:33:13,266 INFO L125 PetriNetUnfolderBase]: For 31689/31689 co-relation queries the response was YES. [2024-06-27 22:33:13,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15383 conditions, 2780 events. 1427/2780 cut-off events. For 31689/31689 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19244 event pairs, 398 based on Foata normal form. 2/2670 useless extension candidates. Maximal degree in co-relation 15301. Up to 2168 conditions per place. [2024-06-27 22:33:13,290 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 233 selfloop transitions, 47 changer transitions 0/287 dead transitions. [2024-06-27 22:33:13,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 287 transitions, 4157 flow [2024-06-27 22:33:13,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:13,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:13,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:33:13,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 22:33:13,292 INFO L175 Difference]: Start difference. First operand has 168 places, 258 transitions, 3414 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:33:13,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 287 transitions, 4157 flow [2024-06-27 22:33:13,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 287 transitions, 4106 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 22:33:13,366 INFO L231 Difference]: Finished difference. Result has 174 places, 260 transitions, 3502 flow [2024-06-27 22:33:13,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3371, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3502, PETRI_PLACES=174, PETRI_TRANSITIONS=260} [2024-06-27 22:33:13,367 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 133 predicate places. [2024-06-27 22:33:13,367 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 260 transitions, 3502 flow [2024-06-27 22:33:13,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:13,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:13,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:13,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:33:13,368 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:13,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:13,368 INFO L85 PathProgramCache]: Analyzing trace with hash -338200319, now seen corresponding path program 1 times [2024-06-27 22:33:13,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:13,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343304844] [2024-06-27 22:33:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:13,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:14,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:14,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343304844] [2024-06-27 22:33:14,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343304844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:14,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:14,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:14,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422383826] [2024-06-27 22:33:14,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:14,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:14,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:14,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:14,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:14,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:14,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 260 transitions, 3502 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:14,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:14,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:14,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:15,349 INFO L124 PetriNetUnfolderBase]: 1479/2881 cut-off events. [2024-06-27 22:33:15,350 INFO L125 PetriNetUnfolderBase]: For 33857/33857 co-relation queries the response was YES. [2024-06-27 22:33:15,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15917 conditions, 2881 events. 1479/2881 cut-off events. For 33857/33857 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 19993 event pairs, 410 based on Foata normal form. 2/2766 useless extension candidates. Maximal degree in co-relation 15833. Up to 2150 conditions per place. [2024-06-27 22:33:15,377 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 223 selfloop transitions, 80 changer transitions 0/310 dead transitions. [2024-06-27 22:33:15,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 310 transitions, 4518 flow [2024-06-27 22:33:15,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:15,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:33:15,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:33:15,379 INFO L175 Difference]: Start difference. First operand has 174 places, 260 transitions, 3502 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:33:15,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 310 transitions, 4518 flow [2024-06-27 22:33:15,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 310 transitions, 4430 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:15,525 INFO L231 Difference]: Finished difference. Result has 179 places, 284 transitions, 3857 flow [2024-06-27 22:33:15,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3857, PETRI_PLACES=179, PETRI_TRANSITIONS=284} [2024-06-27 22:33:15,526 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-27 22:33:15,526 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 284 transitions, 3857 flow [2024-06-27 22:33:15,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:15,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:15,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:15,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:33:15,527 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:15,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:15,527 INFO L85 PathProgramCache]: Analyzing trace with hash -338200567, now seen corresponding path program 3 times [2024-06-27 22:33:15,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:15,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224464168] [2024-06-27 22:33:15,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:15,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:16,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:16,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224464168] [2024-06-27 22:33:16,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224464168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:16,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:16,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:16,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268623553] [2024-06-27 22:33:16,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:16,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:16,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:16,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:16,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:16,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:16,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 284 transitions, 3857 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:16,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:16,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:16,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:17,519 INFO L124 PetriNetUnfolderBase]: 1497/2918 cut-off events. [2024-06-27 22:33:17,519 INFO L125 PetriNetUnfolderBase]: For 35737/35737 co-relation queries the response was YES. [2024-06-27 22:33:17,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16605 conditions, 2918 events. 1497/2918 cut-off events. For 35737/35737 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 20351 event pairs, 407 based on Foata normal form. 1/2800 useless extension candidates. Maximal degree in co-relation 16518. Up to 2256 conditions per place. [2024-06-27 22:33:17,544 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 243 selfloop transitions, 63 changer transitions 0/313 dead transitions. [2024-06-27 22:33:17,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 313 transitions, 4706 flow [2024-06-27 22:33:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:17,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:33:17,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 22:33:17,546 INFO L175 Difference]: Start difference. First operand has 179 places, 284 transitions, 3857 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:33:17,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 313 transitions, 4706 flow [2024-06-27 22:33:17,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 313 transitions, 4623 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:17,631 INFO L231 Difference]: Finished difference. Result has 183 places, 288 transitions, 3960 flow [2024-06-27 22:33:17,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3776, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3960, PETRI_PLACES=183, PETRI_TRANSITIONS=288} [2024-06-27 22:33:17,631 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2024-06-27 22:33:17,632 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 288 transitions, 3960 flow [2024-06-27 22:33:17,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:17,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:17,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:17,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:33:17,632 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:17,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash -338207077, now seen corresponding path program 4 times [2024-06-27 22:33:17,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:17,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183696054] [2024-06-27 22:33:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:17,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:18,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:18,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183696054] [2024-06-27 22:33:18,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183696054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:18,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:18,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:18,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633891350] [2024-06-27 22:33:18,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:18,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:18,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:18,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:18,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:18,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:18,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 288 transitions, 3960 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:18,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:18,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:18,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:19,587 INFO L124 PetriNetUnfolderBase]: 1502/2926 cut-off events. [2024-06-27 22:33:19,587 INFO L125 PetriNetUnfolderBase]: For 35765/35765 co-relation queries the response was YES. [2024-06-27 22:33:19,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16619 conditions, 2926 events. 1502/2926 cut-off events. For 35765/35765 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 20414 event pairs, 403 based on Foata normal form. 1/2808 useless extension candidates. Maximal degree in co-relation 16531. Up to 2225 conditions per place. [2024-06-27 22:33:19,613 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 239 selfloop transitions, 72 changer transitions 0/318 dead transitions. [2024-06-27 22:33:19,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 318 transitions, 4822 flow [2024-06-27 22:33:19,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:19,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:33:19,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:33:19,614 INFO L175 Difference]: Start difference. First operand has 183 places, 288 transitions, 3960 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:33:19,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 318 transitions, 4822 flow [2024-06-27 22:33:19,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 318 transitions, 4686 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:19,697 INFO L231 Difference]: Finished difference. Result has 186 places, 290 transitions, 4007 flow [2024-06-27 22:33:19,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3824, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4007, PETRI_PLACES=186, PETRI_TRANSITIONS=290} [2024-06-27 22:33:19,698 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-27 22:33:19,698 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 290 transitions, 4007 flow [2024-06-27 22:33:19,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:19,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:19,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:19,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:33:19,699 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:19,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:19,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1491938847, now seen corresponding path program 7 times [2024-06-27 22:33:19,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:19,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650544441] [2024-06-27 22:33:19,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:19,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:21,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:21,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650544441] [2024-06-27 22:33:21,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650544441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:21,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:21,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:21,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198924708] [2024-06-27 22:33:21,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:21,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:21,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:21,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:21,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:21,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:21,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 290 transitions, 4007 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:21,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:21,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:21,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:21,977 INFO L124 PetriNetUnfolderBase]: 1597/3071 cut-off events. [2024-06-27 22:33:21,977 INFO L125 PetriNetUnfolderBase]: For 37669/37669 co-relation queries the response was YES. [2024-06-27 22:33:21,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17531 conditions, 3071 events. 1597/3071 cut-off events. For 37669/37669 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 21511 event pairs, 447 based on Foata normal form. 2/2955 useless extension candidates. Maximal degree in co-relation 17441. Up to 2336 conditions per place. [2024-06-27 22:33:22,007 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 286 selfloop transitions, 48 changer transitions 0/341 dead transitions. [2024-06-27 22:33:22,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 341 transitions, 5102 flow [2024-06-27 22:33:22,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 22:33:22,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 22:33:22,008 INFO L175 Difference]: Start difference. First operand has 186 places, 290 transitions, 4007 flow. Second operand 9 states and 149 transitions. [2024-06-27 22:33:22,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 341 transitions, 5102 flow [2024-06-27 22:33:22,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 341 transitions, 4945 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:22,112 INFO L231 Difference]: Finished difference. Result has 190 places, 313 transitions, 4324 flow [2024-06-27 22:33:22,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3850, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4324, PETRI_PLACES=190, PETRI_TRANSITIONS=313} [2024-06-27 22:33:22,113 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 149 predicate places. [2024-06-27 22:33:22,113 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 313 transitions, 4324 flow [2024-06-27 22:33:22,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:22,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:22,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:22,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:33:22,113 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:22,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1491818877, now seen corresponding path program 8 times [2024-06-27 22:33:22,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:22,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83818333] [2024-06-27 22:33:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:22,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:23,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:23,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83818333] [2024-06-27 22:33:23,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83818333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:23,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:23,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:23,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242043070] [2024-06-27 22:33:23,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:23,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:23,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:23,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:23,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:23,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:23,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 313 transitions, 4324 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:23,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:23,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:23,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:24,448 INFO L124 PetriNetUnfolderBase]: 1636/3167 cut-off events. [2024-06-27 22:33:24,448 INFO L125 PetriNetUnfolderBase]: For 39842/39842 co-relation queries the response was YES. [2024-06-27 22:33:24,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18183 conditions, 3167 events. 1636/3167 cut-off events. For 39842/39842 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 22393 event pairs, 455 based on Foata normal form. 1/3042 useless extension candidates. Maximal degree in co-relation 18090. Up to 2336 conditions per place. [2024-06-27 22:33:24,478 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 285 selfloop transitions, 67 changer transitions 0/359 dead transitions. [2024-06-27 22:33:24,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 359 transitions, 5474 flow [2024-06-27 22:33:24,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:24,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 22:33:24,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-27 22:33:24,481 INFO L175 Difference]: Start difference. First operand has 190 places, 313 transitions, 4324 flow. Second operand 8 states and 142 transitions. [2024-06-27 22:33:24,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 359 transitions, 5474 flow [2024-06-27 22:33:24,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 359 transitions, 5414 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:24,585 INFO L231 Difference]: Finished difference. Result has 196 places, 330 transitions, 4677 flow [2024-06-27 22:33:24,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4269, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4677, PETRI_PLACES=196, PETRI_TRANSITIONS=330} [2024-06-27 22:33:24,586 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-27 22:33:24,586 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 330 transitions, 4677 flow [2024-06-27 22:33:24,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:24,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:24,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:24,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:33:24,586 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:24,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:24,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1491818691, now seen corresponding path program 5 times [2024-06-27 22:33:24,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:24,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930707453] [2024-06-27 22:33:24,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:24,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:26,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:26,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930707453] [2024-06-27 22:33:26,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930707453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:26,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:26,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:26,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536214246] [2024-06-27 22:33:26,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:26,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:26,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:26,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:26,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:26,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:26,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 330 transitions, 4677 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:26,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:26,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:26,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:27,020 INFO L124 PetriNetUnfolderBase]: 1726/3368 cut-off events. [2024-06-27 22:33:27,021 INFO L125 PetriNetUnfolderBase]: For 44746/44746 co-relation queries the response was YES. [2024-06-27 22:33:27,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19735 conditions, 3368 events. 1726/3368 cut-off events. For 44746/44746 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24351 event pairs, 479 based on Foata normal form. 1/3227 useless extension candidates. Maximal degree in co-relation 19639. Up to 2200 conditions per place. [2024-06-27 22:33:27,058 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 273 selfloop transitions, 108 changer transitions 0/388 dead transitions. [2024-06-27 22:33:27,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 388 transitions, 6014 flow [2024-06-27 22:33:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:27,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:33:27,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:33:27,060 INFO L175 Difference]: Start difference. First operand has 196 places, 330 transitions, 4677 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:33:27,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 388 transitions, 6014 flow [2024-06-27 22:33:27,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 388 transitions, 5968 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:27,198 INFO L231 Difference]: Finished difference. Result has 205 places, 351 transitions, 5227 flow [2024-06-27 22:33:27,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4631, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5227, PETRI_PLACES=205, PETRI_TRANSITIONS=351} [2024-06-27 22:33:27,199 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-27 22:33:27,199 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 351 transitions, 5227 flow [2024-06-27 22:33:27,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:27,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:27,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:27,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:33:27,200 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:27,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:27,200 INFO L85 PathProgramCache]: Analyzing trace with hash -701527377, now seen corresponding path program 6 times [2024-06-27 22:33:27,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:27,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734137955] [2024-06-27 22:33:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:27,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:28,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:28,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734137955] [2024-06-27 22:33:28,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734137955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:28,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:28,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:28,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771092131] [2024-06-27 22:33:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:28,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:28,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:28,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:28,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:28,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:28,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 351 transitions, 5227 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:28,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:28,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:28,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:29,267 INFO L124 PetriNetUnfolderBase]: 1776/3455 cut-off events. [2024-06-27 22:33:29,268 INFO L125 PetriNetUnfolderBase]: For 51130/51130 co-relation queries the response was YES. [2024-06-27 22:33:29,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21309 conditions, 3455 events. 1776/3455 cut-off events. For 51130/51130 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25076 event pairs, 523 based on Foata normal form. 3/3314 useless extension candidates. Maximal degree in co-relation 21208. Up to 2527 conditions per place. [2024-06-27 22:33:29,299 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 316 selfloop transitions, 76 changer transitions 0/399 dead transitions. [2024-06-27 22:33:29,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 399 transitions, 6461 flow [2024-06-27 22:33:29,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:29,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:33:29,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:33:29,302 INFO L175 Difference]: Start difference. First operand has 205 places, 351 transitions, 5227 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:33:29,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 399 transitions, 6461 flow [2024-06-27 22:33:29,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 399 transitions, 6413 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:29,459 INFO L231 Difference]: Finished difference. Result has 210 places, 360 transitions, 5490 flow [2024-06-27 22:33:29,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5181, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5490, PETRI_PLACES=210, PETRI_TRANSITIONS=360} [2024-06-27 22:33:29,460 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2024-06-27 22:33:29,460 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 360 transitions, 5490 flow [2024-06-27 22:33:29,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:29,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:29,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:29,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:33:29,461 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:29,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:29,461 INFO L85 PathProgramCache]: Analyzing trace with hash -701534073, now seen corresponding path program 9 times [2024-06-27 22:33:29,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:29,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116273158] [2024-06-27 22:33:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:29,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:30,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116273158] [2024-06-27 22:33:30,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116273158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:30,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:30,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388858776] [2024-06-27 22:33:30,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:30,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:30,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:30,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:30,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 360 transitions, 5490 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:30,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:30,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:30,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:31,773 INFO L124 PetriNetUnfolderBase]: 1807/3524 cut-off events. [2024-06-27 22:33:31,774 INFO L125 PetriNetUnfolderBase]: For 52976/52976 co-relation queries the response was YES. [2024-06-27 22:33:31,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22024 conditions, 3524 events. 1807/3524 cut-off events. For 52976/52976 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 25731 event pairs, 516 based on Foata normal form. 1/3377 useless extension candidates. Maximal degree in co-relation 21922. Up to 2763 conditions per place. [2024-06-27 22:33:31,809 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 338 selfloop transitions, 46 changer transitions 0/391 dead transitions. [2024-06-27 22:33:31,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 391 transitions, 6503 flow [2024-06-27 22:33:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 22:33:31,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 22:33:31,811 INFO L175 Difference]: Start difference. First operand has 210 places, 360 transitions, 5490 flow. Second operand 8 states and 138 transitions. [2024-06-27 22:33:31,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 391 transitions, 6503 flow [2024-06-27 22:33:31,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 391 transitions, 6335 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:31,968 INFO L231 Difference]: Finished difference. Result has 213 places, 368 transitions, 5571 flow [2024-06-27 22:33:31,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5322, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5571, PETRI_PLACES=213, PETRI_TRANSITIONS=368} [2024-06-27 22:33:31,969 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-27 22:33:31,969 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 368 transitions, 5571 flow [2024-06-27 22:33:31,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:31,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:31,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:31,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:33:31,970 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:31,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:31,970 INFO L85 PathProgramCache]: Analyzing trace with hash -701533887, now seen corresponding path program 7 times [2024-06-27 22:33:31,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:31,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72692724] [2024-06-27 22:33:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:31,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:33,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:33,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:33,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72692724] [2024-06-27 22:33:33,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72692724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:33,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:33,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:33,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799665706] [2024-06-27 22:33:33,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:33,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:33,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:33,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:33,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:33,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:33,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 368 transitions, 5571 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:33,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:33,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:33,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:34,081 INFO L124 PetriNetUnfolderBase]: 1835/3588 cut-off events. [2024-06-27 22:33:34,082 INFO L125 PetriNetUnfolderBase]: For 54737/54737 co-relation queries the response was YES. [2024-06-27 22:33:34,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22555 conditions, 3588 events. 1835/3588 cut-off events. For 54737/54737 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 26367 event pairs, 510 based on Foata normal form. 1/3435 useless extension candidates. Maximal degree in co-relation 22451. Up to 2560 conditions per place. [2024-06-27 22:33:34,127 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 319 selfloop transitions, 92 changer transitions 0/418 dead transitions. [2024-06-27 22:33:34,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 418 transitions, 6887 flow [2024-06-27 22:33:34,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:33:34,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 22:33:34,132 INFO L175 Difference]: Start difference. First operand has 213 places, 368 transitions, 5571 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:33:34,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 418 transitions, 6887 flow [2024-06-27 22:33:34,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 418 transitions, 6807 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:34,314 INFO L231 Difference]: Finished difference. Result has 217 places, 376 transitions, 5834 flow [2024-06-27 22:33:34,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5491, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5834, PETRI_PLACES=217, PETRI_TRANSITIONS=376} [2024-06-27 22:33:34,315 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-27 22:33:34,316 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 376 transitions, 5834 flow [2024-06-27 22:33:34,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:34,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:34,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:34,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:33:34,316 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:34,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:34,317 INFO L85 PathProgramCache]: Analyzing trace with hash -334919645, now seen corresponding path program 2 times [2024-06-27 22:33:34,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:34,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110889511] [2024-06-27 22:33:34,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:34,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:35,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:35,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:35,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110889511] [2024-06-27 22:33:35,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110889511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:35,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:35,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:35,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415698320] [2024-06-27 22:33:35,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:35,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:35,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:35,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:35,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:35,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:35,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 376 transitions, 5834 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:35,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:35,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:35,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:36,097 INFO L124 PetriNetUnfolderBase]: 1832/3567 cut-off events. [2024-06-27 22:33:36,102 INFO L125 PetriNetUnfolderBase]: For 56307/56307 co-relation queries the response was YES. [2024-06-27 22:33:36,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22767 conditions, 3567 events. 1832/3567 cut-off events. For 56307/56307 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 26086 event pairs, 552 based on Foata normal form. 3/3422 useless extension candidates. Maximal degree in co-relation 22661. Up to 2848 conditions per place. [2024-06-27 22:33:36,140 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 369 selfloop transitions, 28 changer transitions 0/404 dead transitions. [2024-06-27 22:33:36,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 404 transitions, 6854 flow [2024-06-27 22:33:36,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 22:33:36,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-27 22:33:36,141 INFO L175 Difference]: Start difference. First operand has 217 places, 376 transitions, 5834 flow. Second operand 9 states and 143 transitions. [2024-06-27 22:33:36,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 404 transitions, 6854 flow [2024-06-27 22:33:36,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 404 transitions, 6643 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:36,303 INFO L231 Difference]: Finished difference. Result has 221 places, 381 transitions, 5767 flow [2024-06-27 22:33:36,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5623, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5767, PETRI_PLACES=221, PETRI_TRANSITIONS=381} [2024-06-27 22:33:36,304 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-27 22:33:36,304 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 381 transitions, 5767 flow [2024-06-27 22:33:36,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:36,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:36,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:36,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:33:36,305 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:36,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:36,305 INFO L85 PathProgramCache]: Analyzing trace with hash 325674521, now seen corresponding path program 8 times [2024-06-27 22:33:36,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:36,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379559754] [2024-06-27 22:33:36,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:36,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:37,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:37,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379559754] [2024-06-27 22:33:37,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379559754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:37,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:37,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:37,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543696521] [2024-06-27 22:33:37,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:37,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:37,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:37,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:37,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:37,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:37,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 381 transitions, 5767 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:37,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:37,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:37,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:38,188 INFO L124 PetriNetUnfolderBase]: 1882/3665 cut-off events. [2024-06-27 22:33:38,188 INFO L125 PetriNetUnfolderBase]: For 58966/58966 co-relation queries the response was YES. [2024-06-27 22:33:38,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23436 conditions, 3665 events. 1882/3665 cut-off events. For 58966/58966 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 26908 event pairs, 550 based on Foata normal form. 3/3515 useless extension candidates. Maximal degree in co-relation 23328. Up to 2793 conditions per place. [2024-06-27 22:33:38,223 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 372 selfloop transitions, 53 changer transitions 0/432 dead transitions. [2024-06-27 22:33:38,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 432 transitions, 7110 flow [2024-06-27 22:33:38,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 22:33:38,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-27 22:33:38,224 INFO L175 Difference]: Start difference. First operand has 221 places, 381 transitions, 5767 flow. Second operand 8 states and 143 transitions. [2024-06-27 22:33:38,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 432 transitions, 7110 flow [2024-06-27 22:33:38,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 432 transitions, 6974 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 22:33:38,401 INFO L231 Difference]: Finished difference. Result has 221 places, 390 transitions, 5926 flow [2024-06-27 22:33:38,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5631, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5926, PETRI_PLACES=221, PETRI_TRANSITIONS=390} [2024-06-27 22:33:38,401 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-27 22:33:38,402 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 390 transitions, 5926 flow [2024-06-27 22:33:38,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:38,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:38,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:38,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:33:38,402 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:38,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1311530707, now seen corresponding path program 9 times [2024-06-27 22:33:38,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:38,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914368280] [2024-06-27 22:33:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:38,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:39,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:39,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:39,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914368280] [2024-06-27 22:33:39,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914368280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:39,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:39,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:39,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779165080] [2024-06-27 22:33:39,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:39,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:39,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:39,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:39,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 390 transitions, 5926 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:39,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:39,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:39,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:40,395 INFO L124 PetriNetUnfolderBase]: 1933/3764 cut-off events. [2024-06-27 22:33:40,395 INFO L125 PetriNetUnfolderBase]: For 62073/62073 co-relation queries the response was YES. [2024-06-27 22:33:40,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24329 conditions, 3764 events. 1933/3764 cut-off events. For 62073/62073 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 27755 event pairs, 555 based on Foata normal form. 1/3607 useless extension candidates. Maximal degree in co-relation 24223. Up to 2901 conditions per place. [2024-06-27 22:33:40,437 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 361 selfloop transitions, 60 changer transitions 0/428 dead transitions. [2024-06-27 22:33:40,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 428 transitions, 7228 flow [2024-06-27 22:33:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:40,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:40,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 22:33:40,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 22:33:40,438 INFO L175 Difference]: Start difference. First operand has 221 places, 390 transitions, 5926 flow. Second operand 9 states and 150 transitions. [2024-06-27 22:33:40,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 428 transitions, 7228 flow [2024-06-27 22:33:40,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 428 transitions, 7072 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:40,641 INFO L231 Difference]: Finished difference. Result has 227 places, 402 transitions, 6165 flow [2024-06-27 22:33:40,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5770, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6165, PETRI_PLACES=227, PETRI_TRANSITIONS=402} [2024-06-27 22:33:40,642 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-06-27 22:33:40,643 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 402 transitions, 6165 flow [2024-06-27 22:33:40,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:40,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:40,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:40,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:33:40,643 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:40,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:40,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2058006567, now seen corresponding path program 10 times [2024-06-27 22:33:40,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:40,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447728812] [2024-06-27 22:33:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:40,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:41,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:41,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447728812] [2024-06-27 22:33:41,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447728812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:41,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:41,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:41,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730135677] [2024-06-27 22:33:41,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:41,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:41,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:41,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:41,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:41,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:41,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 402 transitions, 6165 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:41,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:41,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:41,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:42,699 INFO L124 PetriNetUnfolderBase]: 1962/3809 cut-off events. [2024-06-27 22:33:42,699 INFO L125 PetriNetUnfolderBase]: For 64006/64006 co-relation queries the response was YES. [2024-06-27 22:33:42,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24769 conditions, 3809 events. 1962/3809 cut-off events. For 64006/64006 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 28097 event pairs, 562 based on Foata normal form. 2/3654 useless extension candidates. Maximal degree in co-relation 24659. Up to 3020 conditions per place. [2024-06-27 22:33:42,759 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 393 selfloop transitions, 35 changer transitions 0/435 dead transitions. [2024-06-27 22:33:42,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 435 transitions, 7330 flow [2024-06-27 22:33:42,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:42,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 22:33:42,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-06-27 22:33:42,761 INFO L175 Difference]: Start difference. First operand has 227 places, 402 transitions, 6165 flow. Second operand 8 states and 135 transitions. [2024-06-27 22:33:42,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 435 transitions, 7330 flow [2024-06-27 22:33:42,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 435 transitions, 7188 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:42,955 INFO L231 Difference]: Finished difference. Result has 230 places, 412 transitions, 6294 flow [2024-06-27 22:33:42,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6023, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6294, PETRI_PLACES=230, PETRI_TRANSITIONS=412} [2024-06-27 22:33:42,956 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-27 22:33:42,956 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 412 transitions, 6294 flow [2024-06-27 22:33:42,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:42,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:42,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:42,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:33:42,957 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:42,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:42,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2057769231, now seen corresponding path program 10 times [2024-06-27 22:33:42,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:42,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114529477] [2024-06-27 22:33:42,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:42,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:43,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:43,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114529477] [2024-06-27 22:33:43,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114529477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:43,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:43,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:43,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922539009] [2024-06-27 22:33:43,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:43,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:43,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:43,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:43,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:43,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:43,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 412 transitions, 6294 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:43,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:43,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:43,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:44,930 INFO L124 PetriNetUnfolderBase]: 1955/3807 cut-off events. [2024-06-27 22:33:44,930 INFO L125 PetriNetUnfolderBase]: For 63685/63685 co-relation queries the response was YES. [2024-06-27 22:33:44,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24492 conditions, 3807 events. 1955/3807 cut-off events. For 63685/63685 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 28125 event pairs, 570 based on Foata normal form. 5/3653 useless extension candidates. Maximal degree in co-relation 24381. Up to 2922 conditions per place. [2024-06-27 22:33:44,966 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 394 selfloop transitions, 44 changer transitions 0/445 dead transitions. [2024-06-27 22:33:44,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 445 transitions, 7450 flow [2024-06-27 22:33:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 22:33:44,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 22:33:44,968 INFO L175 Difference]: Start difference. First operand has 230 places, 412 transitions, 6294 flow. Second operand 8 states and 138 transitions. [2024-06-27 22:33:44,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 445 transitions, 7450 flow [2024-06-27 22:33:45,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 445 transitions, 7298 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:45,195 INFO L231 Difference]: Finished difference. Result has 233 places, 414 transitions, 6299 flow [2024-06-27 22:33:45,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6142, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6299, PETRI_PLACES=233, PETRI_TRANSITIONS=414} [2024-06-27 22:33:45,198 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-27 22:33:45,198 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 414 transitions, 6299 flow [2024-06-27 22:33:45,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 22:33:45,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:45,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:45,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:33:45,202 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:45,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:45,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2048494310, now seen corresponding path program 1 times [2024-06-27 22:33:45,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:45,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776437687] [2024-06-27 22:33:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:45,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:46,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:46,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776437687] [2024-06-27 22:33:46,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776437687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:46,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:46,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:46,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240389369] [2024-06-27 22:33:46,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:46,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:46,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:46,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:46,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:46,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:46,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 414 transitions, 6299 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:46,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:46,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:46,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:47,719 INFO L124 PetriNetUnfolderBase]: 1952/3794 cut-off events. [2024-06-27 22:33:47,720 INFO L125 PetriNetUnfolderBase]: For 60307/60307 co-relation queries the response was YES. [2024-06-27 22:33:47,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24393 conditions, 3794 events. 1952/3794 cut-off events. For 60307/60307 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 27941 event pairs, 573 based on Foata normal form. 2/3639 useless extension candidates. Maximal degree in co-relation 24280. Up to 3031 conditions per place. [2024-06-27 22:33:47,764 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 412 selfloop transitions, 22 changer transitions 0/441 dead transitions. [2024-06-27 22:33:47,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 441 transitions, 7337 flow [2024-06-27 22:33:47,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:47,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:47,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 22:33:47,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43543543543543545 [2024-06-27 22:33:47,765 INFO L175 Difference]: Start difference. First operand has 233 places, 414 transitions, 6299 flow. Second operand 9 states and 145 transitions. [2024-06-27 22:33:47,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 441 transitions, 7337 flow [2024-06-27 22:33:48,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 441 transitions, 7223 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:48,021 INFO L231 Difference]: Finished difference. Result has 238 places, 416 transitions, 6264 flow [2024-06-27 22:33:48,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6185, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6264, PETRI_PLACES=238, PETRI_TRANSITIONS=416} [2024-06-27 22:33:48,022 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 197 predicate places. [2024-06-27 22:33:48,022 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 416 transitions, 6264 flow [2024-06-27 22:33:48,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:48,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:48,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:48,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:33:48,023 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:48,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:48,023 INFO L85 PathProgramCache]: Analyzing trace with hash 623441925, now seen corresponding path program 1 times [2024-06-27 22:33:48,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:48,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894075799] [2024-06-27 22:33:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:48,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:48,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:48,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894075799] [2024-06-27 22:33:48,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894075799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:48,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:48,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:48,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697000456] [2024-06-27 22:33:48,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:48,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:48,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:48,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:48,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:48,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:48,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 416 transitions, 6264 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:48,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:48,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:48,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:49,859 INFO L124 PetriNetUnfolderBase]: 2014/3903 cut-off events. [2024-06-27 22:33:49,859 INFO L125 PetriNetUnfolderBase]: For 61383/61383 co-relation queries the response was YES. [2024-06-27 22:33:49,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24898 conditions, 3903 events. 2014/3903 cut-off events. For 61383/61383 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 28294 event pairs, 364 based on Foata normal form. 2/3745 useless extension candidates. Maximal degree in co-relation 24782. Up to 2542 conditions per place. [2024-06-27 22:33:49,904 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 382 selfloop transitions, 90 changer transitions 0/479 dead transitions. [2024-06-27 22:33:49,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 479 transitions, 7744 flow [2024-06-27 22:33:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:33:49,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:33:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-27 22:33:49,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481981981981982 [2024-06-27 22:33:49,905 INFO L175 Difference]: Start difference. First operand has 238 places, 416 transitions, 6264 flow. Second operand 12 states and 214 transitions. [2024-06-27 22:33:49,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 479 transitions, 7744 flow [2024-06-27 22:33:50,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 479 transitions, 7685 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:50,154 INFO L231 Difference]: Finished difference. Result has 245 places, 423 transitions, 6513 flow [2024-06-27 22:33:50,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6205, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6513, PETRI_PLACES=245, PETRI_TRANSITIONS=423} [2024-06-27 22:33:50,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-27 22:33:50,155 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 423 transitions, 6513 flow [2024-06-27 22:33:50,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:50,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:50,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:50,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:33:50,155 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:50,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:50,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1072003315, now seen corresponding path program 2 times [2024-06-27 22:33:50,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:50,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057731390] [2024-06-27 22:33:50,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:50,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:51,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:51,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057731390] [2024-06-27 22:33:51,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057731390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:51,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:51,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:51,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573570049] [2024-06-27 22:33:51,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:51,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:51,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:51,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:51,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:51,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 423 transitions, 6513 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:51,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:51,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:51,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:52,161 INFO L124 PetriNetUnfolderBase]: 2064/4095 cut-off events. [2024-06-27 22:33:52,161 INFO L125 PetriNetUnfolderBase]: For 68301/68301 co-relation queries the response was YES. [2024-06-27 22:33:52,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26107 conditions, 4095 events. 2064/4095 cut-off events. For 68301/68301 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 30675 event pairs, 411 based on Foata normal form. 2/3907 useless extension candidates. Maximal degree in co-relation 25990. Up to 2863 conditions per place. [2024-06-27 22:33:52,212 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 389 selfloop transitions, 77 changer transitions 0/473 dead transitions. [2024-06-27 22:33:52,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 473 transitions, 7816 flow [2024-06-27 22:33:52,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:52,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:52,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:33:52,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:33:52,213 INFO L175 Difference]: Start difference. First operand has 245 places, 423 transitions, 6513 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:33:52,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 473 transitions, 7816 flow [2024-06-27 22:33:52,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 473 transitions, 7644 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:52,518 INFO L231 Difference]: Finished difference. Result has 249 places, 429 transitions, 6619 flow [2024-06-27 22:33:52,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6387, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6619, PETRI_PLACES=249, PETRI_TRANSITIONS=429} [2024-06-27 22:33:52,519 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-27 22:33:52,519 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 429 transitions, 6619 flow [2024-06-27 22:33:52,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:52,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:52,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:52,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:33:52,519 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:52,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:52,520 INFO L85 PathProgramCache]: Analyzing trace with hash -37813555, now seen corresponding path program 3 times [2024-06-27 22:33:52,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:52,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372552832] [2024-06-27 22:33:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:52,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:53,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:53,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372552832] [2024-06-27 22:33:53,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372552832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:53,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:53,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:53,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158505901] [2024-06-27 22:33:53,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:53,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:53,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:53,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:53,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 429 transitions, 6619 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:53,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:53,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:53,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:54,428 INFO L124 PetriNetUnfolderBase]: 2132/4043 cut-off events. [2024-06-27 22:33:54,428 INFO L125 PetriNetUnfolderBase]: For 71823/71823 co-relation queries the response was YES. [2024-06-27 22:33:54,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26809 conditions, 4043 events. 2132/4043 cut-off events. For 71823/71823 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29360 event pairs, 290 based on Foata normal form. 2/3894 useless extension candidates. Maximal degree in co-relation 26690. Up to 1681 conditions per place. [2024-06-27 22:33:54,473 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 317 selfloop transitions, 168 changer transitions 0/492 dead transitions. [2024-06-27 22:33:54,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 492 transitions, 8271 flow [2024-06-27 22:33:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:54,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 22:33:54,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-06-27 22:33:54,475 INFO L175 Difference]: Start difference. First operand has 249 places, 429 transitions, 6619 flow. Second operand 10 states and 192 transitions. [2024-06-27 22:33:54,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 492 transitions, 8271 flow [2024-06-27 22:33:54,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 492 transitions, 8147 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:54,768 INFO L231 Difference]: Finished difference. Result has 254 places, 439 transitions, 7051 flow [2024-06-27 22:33:54,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6495, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7051, PETRI_PLACES=254, PETRI_TRANSITIONS=439} [2024-06-27 22:33:54,769 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-27 22:33:54,769 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 439 transitions, 7051 flow [2024-06-27 22:33:54,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:54,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:54,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:54,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:33:54,769 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:54,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash -70875768, now seen corresponding path program 1 times [2024-06-27 22:33:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:54,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874034900] [2024-06-27 22:33:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:54,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:56,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:56,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:56,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874034900] [2024-06-27 22:33:56,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874034900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:56,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:56,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:33:56,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071873639] [2024-06-27 22:33:56,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:56,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:33:56,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:56,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:33:56,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:33:56,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:56,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 439 transitions, 7051 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:56,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:56,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:56,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:58,239 INFO L124 PetriNetUnfolderBase]: 2264/4442 cut-off events. [2024-06-27 22:33:58,239 INFO L125 PetriNetUnfolderBase]: For 81018/81018 co-relation queries the response was YES. [2024-06-27 22:33:58,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29107 conditions, 4442 events. 2264/4442 cut-off events. For 81018/81018 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 33841 event pairs, 447 based on Foata normal form. 2/4245 useless extension candidates. Maximal degree in co-relation 28986. Up to 2663 conditions per place. [2024-06-27 22:33:58,286 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 333 selfloop transitions, 165 changer transitions 0/505 dead transitions. [2024-06-27 22:33:58,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 505 transitions, 8723 flow [2024-06-27 22:33:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 22:33:58,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162162162162162 [2024-06-27 22:33:58,288 INFO L175 Difference]: Start difference. First operand has 254 places, 439 transitions, 7051 flow. Second operand 10 states and 191 transitions. [2024-06-27 22:33:58,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 505 transitions, 8723 flow [2024-06-27 22:33:58,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 505 transitions, 8563 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:58,595 INFO L231 Difference]: Finished difference. Result has 261 places, 463 transitions, 7646 flow [2024-06-27 22:33:58,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6905, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7646, PETRI_PLACES=261, PETRI_TRANSITIONS=463} [2024-06-27 22:33:58,595 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-27 22:33:58,595 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 463 transitions, 7646 flow [2024-06-27 22:33:58,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:58,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:58,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:58,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:33:58,596 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:58,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:58,596 INFO L85 PathProgramCache]: Analyzing trace with hash -70875985, now seen corresponding path program 4 times [2024-06-27 22:33:58,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:58,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555452672] [2024-06-27 22:33:58,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:58,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:59,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:59,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555452672] [2024-06-27 22:33:59,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555452672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:59,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:59,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:59,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543908974] [2024-06-27 22:33:59,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:59,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:59,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:59,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:59,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:59,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:59,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 463 transitions, 7646 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:59,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:59,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:59,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:00,762 INFO L124 PetriNetUnfolderBase]: 2260/4309 cut-off events. [2024-06-27 22:34:00,762 INFO L125 PetriNetUnfolderBase]: For 83704/83704 co-relation queries the response was YES. [2024-06-27 22:34:00,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29844 conditions, 4309 events. 2260/4309 cut-off events. For 83704/83704 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 31821 event pairs, 325 based on Foata normal form. 2/4146 useless extension candidates. Maximal degree in co-relation 29720. Up to 1887 conditions per place. [2024-06-27 22:34:00,816 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 330 selfloop transitions, 178 changer transitions 0/515 dead transitions. [2024-06-27 22:34:00,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 515 transitions, 9137 flow [2024-06-27 22:34:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 22:34:00,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:34:00,818 INFO L175 Difference]: Start difference. First operand has 261 places, 463 transitions, 7646 flow. Second operand 10 states and 190 transitions. [2024-06-27 22:34:00,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 515 transitions, 9137 flow [2024-06-27 22:34:01,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 515 transitions, 8977 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-27 22:34:01,214 INFO L231 Difference]: Finished difference. Result has 267 places, 463 transitions, 7849 flow [2024-06-27 22:34:01,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7486, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7849, PETRI_PLACES=267, PETRI_TRANSITIONS=463} [2024-06-27 22:34:01,215 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-27 22:34:01,215 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 463 transitions, 7849 flow [2024-06-27 22:34:01,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:01,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:01,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:01,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:34:01,216 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:01,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:01,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1398156169, now seen corresponding path program 5 times [2024-06-27 22:34:01,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:01,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820416172] [2024-06-27 22:34:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:01,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:02,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:02,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820416172] [2024-06-27 22:34:02,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820416172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:02,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:02,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:02,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542246785] [2024-06-27 22:34:02,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:02,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:02,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:02,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:02,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:02,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:02,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 463 transitions, 7849 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:02,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:02,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:02,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:03,740 INFO L124 PetriNetUnfolderBase]: 2324/4474 cut-off events. [2024-06-27 22:34:03,740 INFO L125 PetriNetUnfolderBase]: For 88574/88574 co-relation queries the response was YES. [2024-06-27 22:34:03,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31221 conditions, 4474 events. 2324/4474 cut-off events. For 88574/88574 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 33590 event pairs, 600 based on Foata normal form. 2/4300 useless extension candidates. Maximal degree in co-relation 31095. Up to 3399 conditions per place. [2024-06-27 22:34:03,793 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 450 selfloop transitions, 54 changer transitions 0/511 dead transitions. [2024-06-27 22:34:03,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 511 transitions, 9248 flow [2024-06-27 22:34:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:03,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:34:03,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 22:34:03,797 INFO L175 Difference]: Start difference. First operand has 267 places, 463 transitions, 7849 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:34:03,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 511 transitions, 9248 flow [2024-06-27 22:34:04,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 511 transitions, 8858 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:34:04,222 INFO L231 Difference]: Finished difference. Result has 267 places, 471 transitions, 7713 flow [2024-06-27 22:34:04,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7483, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7713, PETRI_PLACES=267, PETRI_TRANSITIONS=471} [2024-06-27 22:34:04,222 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-27 22:34:04,223 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 471 transitions, 7713 flow [2024-06-27 22:34:04,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:04,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:04,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:04,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:34:04,226 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:04,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:04,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1844774379, now seen corresponding path program 6 times [2024-06-27 22:34:04,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:04,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32819505] [2024-06-27 22:34:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:04,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:05,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:05,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:05,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32819505] [2024-06-27 22:34:05,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32819505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:05,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:05,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:05,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232885885] [2024-06-27 22:34:05,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:05,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:05,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:05,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:05,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:05,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:05,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 471 transitions, 7713 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:05,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:05,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:05,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:06,773 INFO L124 PetriNetUnfolderBase]: 2496/4784 cut-off events. [2024-06-27 22:34:06,774 INFO L125 PetriNetUnfolderBase]: For 95879/95879 co-relation queries the response was YES. [2024-06-27 22:34:06,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32685 conditions, 4784 events. 2496/4784 cut-off events. For 95879/95879 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 36199 event pairs, 606 based on Foata normal form. 2/4601 useless extension candidates. Maximal degree in co-relation 32559. Up to 2990 conditions per place. [2024-06-27 22:34:06,832 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 398 selfloop transitions, 140 changer transitions 0/545 dead transitions. [2024-06-27 22:34:06,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 545 transitions, 9695 flow [2024-06-27 22:34:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-27 22:34:06,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5495495495495496 [2024-06-27 22:34:06,843 INFO L175 Difference]: Start difference. First operand has 267 places, 471 transitions, 7713 flow. Second operand 9 states and 183 transitions. [2024-06-27 22:34:06,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 545 transitions, 9695 flow [2024-06-27 22:34:07,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 545 transitions, 9591 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:07,264 INFO L231 Difference]: Finished difference. Result has 272 places, 489 transitions, 8231 flow [2024-06-27 22:34:07,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7609, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8231, PETRI_PLACES=272, PETRI_TRANSITIONS=489} [2024-06-27 22:34:07,265 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 231 predicate places. [2024-06-27 22:34:07,265 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 489 transitions, 8231 flow [2024-06-27 22:34:07,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:07,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:07,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:07,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:34:07,266 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:07,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1844780176, now seen corresponding path program 2 times [2024-06-27 22:34:07,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:07,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339474842] [2024-06-27 22:34:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:07,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:09,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:09,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:09,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339474842] [2024-06-27 22:34:09,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339474842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:09,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:09,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:09,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654378691] [2024-06-27 22:34:09,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:09,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:09,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:09,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:09,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:09,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:09,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 489 transitions, 8231 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:09,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:09,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:09,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:10,631 INFO L124 PetriNetUnfolderBase]: 2646/5197 cut-off events. [2024-06-27 22:34:10,632 INFO L125 PetriNetUnfolderBase]: For 106365/106365 co-relation queries the response was YES. [2024-06-27 22:34:10,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35242 conditions, 5197 events. 2646/5197 cut-off events. For 106365/106365 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 40896 event pairs, 610 based on Foata normal form. 2/4970 useless extension candidates. Maximal degree in co-relation 35113. Up to 3597 conditions per place. [2024-06-27 22:34:10,699 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 408 selfloop transitions, 140 changer transitions 0/555 dead transitions. [2024-06-27 22:34:10,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 555 transitions, 10016 flow [2024-06-27 22:34:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:10,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-27 22:34:10,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375375375375375 [2024-06-27 22:34:10,701 INFO L175 Difference]: Start difference. First operand has 272 places, 489 transitions, 8231 flow. Second operand 9 states and 179 transitions. [2024-06-27 22:34:10,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 555 transitions, 10016 flow [2024-06-27 22:34:11,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 555 transitions, 9876 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-27 22:34:11,183 INFO L231 Difference]: Finished difference. Result has 280 places, 513 transitions, 8790 flow [2024-06-27 22:34:11,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8091, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8790, PETRI_PLACES=280, PETRI_TRANSITIONS=513} [2024-06-27 22:34:11,184 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 239 predicate places. [2024-06-27 22:34:11,184 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 513 transitions, 8790 flow [2024-06-27 22:34:11,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:11,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:11,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:11,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:34:11,185 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:11,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:11,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1401880819, now seen corresponding path program 7 times [2024-06-27 22:34:11,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:11,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026623093] [2024-06-27 22:34:11,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:11,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:12,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:12,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026623093] [2024-06-27 22:34:12,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026623093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:12,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:12,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:12,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515316394] [2024-06-27 22:34:12,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:12,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:12,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:12,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:12,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:12,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:12,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 513 transitions, 8790 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:12,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:12,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:12,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:13,757 INFO L124 PetriNetUnfolderBase]: 2642/5100 cut-off events. [2024-06-27 22:34:13,758 INFO L125 PetriNetUnfolderBase]: For 108752/108752 co-relation queries the response was YES. [2024-06-27 22:34:13,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35939 conditions, 5100 events. 2642/5100 cut-off events. For 108752/108752 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 39399 event pairs, 636 based on Foata normal form. 2/4895 useless extension candidates. Maximal degree in co-relation 35806. Up to 3223 conditions per place. [2024-06-27 22:34:13,824 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 415 selfloop transitions, 146 changer transitions 0/568 dead transitions. [2024-06-27 22:34:13,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 568 transitions, 10492 flow [2024-06-27 22:34:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:13,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-27 22:34:13,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435435435435435 [2024-06-27 22:34:13,834 INFO L175 Difference]: Start difference. First operand has 280 places, 513 transitions, 8790 flow. Second operand 9 states and 181 transitions. [2024-06-27 22:34:13,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 568 transitions, 10492 flow [2024-06-27 22:34:14,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 568 transitions, 10310 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 22:34:14,279 INFO L231 Difference]: Finished difference. Result has 285 places, 513 transitions, 8912 flow [2024-06-27 22:34:14,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8608, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8912, PETRI_PLACES=285, PETRI_TRANSITIONS=513} [2024-06-27 22:34:14,280 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-27 22:34:14,280 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 513 transitions, 8912 flow [2024-06-27 22:34:14,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:14,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:14,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:14,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:34:14,280 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:14,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:14,281 INFO L85 PathProgramCache]: Analyzing trace with hash -426274679, now seen corresponding path program 8 times [2024-06-27 22:34:14,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:14,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294106770] [2024-06-27 22:34:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:14,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:15,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:15,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294106770] [2024-06-27 22:34:15,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294106770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:15,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:15,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:15,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930754223] [2024-06-27 22:34:15,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:15,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:15,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:15,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:15,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:15,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 513 transitions, 8912 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:15,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:15,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:15,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:16,818 INFO L124 PetriNetUnfolderBase]: 2678/5215 cut-off events. [2024-06-27 22:34:16,818 INFO L125 PetriNetUnfolderBase]: For 113461/113461 co-relation queries the response was YES. [2024-06-27 22:34:16,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36914 conditions, 5215 events. 2678/5215 cut-off events. For 113461/113461 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 40854 event pairs, 776 based on Foata normal form. 2/4997 useless extension candidates. Maximal degree in co-relation 36779. Up to 4068 conditions per place. [2024-06-27 22:34:16,882 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 466 selfloop transitions, 74 changer transitions 0/547 dead transitions. [2024-06-27 22:34:16,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 547 transitions, 10290 flow [2024-06-27 22:34:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:34:16,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:34:16,883 INFO L175 Difference]: Start difference. First operand has 285 places, 513 transitions, 8912 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:34:16,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 547 transitions, 10290 flow [2024-06-27 22:34:17,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 547 transitions, 9975 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:17,329 INFO L231 Difference]: Finished difference. Result has 287 places, 517 transitions, 8844 flow [2024-06-27 22:34:17,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8605, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8844, PETRI_PLACES=287, PETRI_TRANSITIONS=517} [2024-06-27 22:34:17,345 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-27 22:34:17,346 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 517 transitions, 8844 flow [2024-06-27 22:34:17,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:17,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:17,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:17,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:34:17,347 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:17,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:17,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1545980816, now seen corresponding path program 3 times [2024-06-27 22:34:17,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:17,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17991927] [2024-06-27 22:34:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:17,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:19,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:19,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17991927] [2024-06-27 22:34:19,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17991927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:19,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:19,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:19,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079927587] [2024-06-27 22:34:19,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:19,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:19,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:19,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:19,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:19,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:19,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 517 transitions, 8844 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:19,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:19,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:19,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:20,554 INFO L124 PetriNetUnfolderBase]: 2728/5331 cut-off events. [2024-06-27 22:34:20,556 INFO L125 PetriNetUnfolderBase]: For 112503/112503 co-relation queries the response was YES. [2024-06-27 22:34:20,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37167 conditions, 5331 events. 2728/5331 cut-off events. For 112503/112503 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 42194 event pairs, 660 based on Foata normal form. 2/5104 useless extension candidates. Maximal degree in co-relation 37030. Up to 4065 conditions per place. [2024-06-27 22:34:20,619 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 460 selfloop transitions, 87 changer transitions 0/554 dead transitions. [2024-06-27 22:34:20,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 554 transitions, 10243 flow [2024-06-27 22:34:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:20,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:20,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:34:20,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 22:34:20,621 INFO L175 Difference]: Start difference. First operand has 287 places, 517 transitions, 8844 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:34:20,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 554 transitions, 10243 flow [2024-06-27 22:34:21,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 554 transitions, 10062 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:21,103 INFO L231 Difference]: Finished difference. Result has 288 places, 523 transitions, 8959 flow [2024-06-27 22:34:21,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8663, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8959, PETRI_PLACES=288, PETRI_TRANSITIONS=523} [2024-06-27 22:34:21,103 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-27 22:34:21,104 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 523 transitions, 8959 flow [2024-06-27 22:34:21,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:21,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:21,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:21,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:34:21,104 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:21,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1894483939, now seen corresponding path program 9 times [2024-06-27 22:34:21,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:21,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433393136] [2024-06-27 22:34:21,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:21,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:22,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:22,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433393136] [2024-06-27 22:34:22,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433393136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:22,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:22,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:22,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470219010] [2024-06-27 22:34:22,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:22,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:22,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:22,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:22,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:22,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 523 transitions, 8959 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:22,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:22,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:22,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:24,424 INFO L124 PetriNetUnfolderBase]: 2778/5419 cut-off events. [2024-06-27 22:34:24,424 INFO L125 PetriNetUnfolderBase]: For 117581/117581 co-relation queries the response was YES. [2024-06-27 22:34:24,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37935 conditions, 5419 events. 2778/5419 cut-off events. For 117581/117581 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 42888 event pairs, 783 based on Foata normal form. 2/5189 useless extension candidates. Maximal degree in co-relation 37798. Up to 4042 conditions per place. [2024-06-27 22:34:24,485 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 472 selfloop transitions, 90 changer transitions 0/569 dead transitions. [2024-06-27 22:34:24,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 569 transitions, 10642 flow [2024-06-27 22:34:24,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:24,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:24,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 22:34:24,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2024-06-27 22:34:24,486 INFO L175 Difference]: Start difference. First operand has 288 places, 523 transitions, 8959 flow. Second operand 9 states and 175 transitions. [2024-06-27 22:34:24,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 569 transitions, 10642 flow [2024-06-27 22:34:25,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 569 transitions, 10446 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:25,023 INFO L231 Difference]: Finished difference. Result has 290 places, 529 transitions, 9080 flow [2024-06-27 22:34:25,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8763, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9080, PETRI_PLACES=290, PETRI_TRANSITIONS=529} [2024-06-27 22:34:25,024 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2024-06-27 22:34:25,024 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 529 transitions, 9080 flow [2024-06-27 22:34:25,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:25,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:25,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:25,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:34:25,025 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:25,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1894483722, now seen corresponding path program 4 times [2024-06-27 22:34:25,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:25,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918997886] [2024-06-27 22:34:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:25,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:27,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:27,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918997886] [2024-06-27 22:34:27,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918997886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:27,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:27,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:27,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776282060] [2024-06-27 22:34:27,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:27,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:27,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:27,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:27,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:27,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:27,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 529 transitions, 9080 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:27,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:27,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:27,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:28,853 INFO L124 PetriNetUnfolderBase]: 2840/5549 cut-off events. [2024-06-27 22:34:28,853 INFO L125 PetriNetUnfolderBase]: For 121949/121949 co-relation queries the response was YES. [2024-06-27 22:34:28,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38776 conditions, 5549 events. 2840/5549 cut-off events. For 121949/121949 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 44221 event pairs, 716 based on Foata normal form. 2/5312 useless extension candidates. Maximal degree in co-relation 38638. Up to 4091 conditions per place. [2024-06-27 22:34:28,919 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 460 selfloop transitions, 112 changer transitions 0/579 dead transitions. [2024-06-27 22:34:28,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 579 transitions, 10794 flow [2024-06-27 22:34:28,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:28,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-27 22:34:28,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375375375375375 [2024-06-27 22:34:28,921 INFO L175 Difference]: Start difference. First operand has 290 places, 529 transitions, 9080 flow. Second operand 9 states and 179 transitions. [2024-06-27 22:34:28,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 579 transitions, 10794 flow [2024-06-27 22:34:29,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 579 transitions, 10638 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:29,468 INFO L231 Difference]: Finished difference. Result has 294 places, 540 transitions, 9372 flow [2024-06-27 22:34:29,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8924, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9372, PETRI_PLACES=294, PETRI_TRANSITIONS=540} [2024-06-27 22:34:29,469 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-27 22:34:29,469 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 540 transitions, 9372 flow [2024-06-27 22:34:29,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:29,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:29,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:29,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:34:29,470 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:29,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1894281912, now seen corresponding path program 5 times [2024-06-27 22:34:29,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:29,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857628904] [2024-06-27 22:34:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:29,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:31,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:31,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857628904] [2024-06-27 22:34:31,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857628904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:31,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:31,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:31,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339200450] [2024-06-27 22:34:31,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:31,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:31,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:31,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:31,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:31,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:31,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 540 transitions, 9372 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:31,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:31,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:31,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:33,026 INFO L124 PetriNetUnfolderBase]: 2848/5549 cut-off events. [2024-06-27 22:34:33,026 INFO L125 PetriNetUnfolderBase]: For 121659/121659 co-relation queries the response was YES. [2024-06-27 22:34:33,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39263 conditions, 5549 events. 2848/5549 cut-off events. For 121659/121659 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 44199 event pairs, 685 based on Foata normal form. 2/5316 useless extension candidates. Maximal degree in co-relation 39123. Up to 4190 conditions per place. [2024-06-27 22:34:33,105 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 470 selfloop transitions, 102 changer transitions 0/579 dead transitions. [2024-06-27 22:34:33,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 579 transitions, 10837 flow [2024-06-27 22:34:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:34:33,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:34:33,107 INFO L175 Difference]: Start difference. First operand has 294 places, 540 transitions, 9372 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:34:33,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 579 transitions, 10837 flow [2024-06-27 22:34:33,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 579 transitions, 10646 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-27 22:34:33,763 INFO L231 Difference]: Finished difference. Result has 300 places, 545 transitions, 9501 flow [2024-06-27 22:34:33,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9189, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9501, PETRI_PLACES=300, PETRI_TRANSITIONS=545} [2024-06-27 22:34:33,764 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-27 22:34:33,764 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 545 transitions, 9501 flow [2024-06-27 22:34:33,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:33,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:33,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:33,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:34:33,765 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:33,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:33,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1451590379, now seen corresponding path program 10 times [2024-06-27 22:34:33,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:33,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602448653] [2024-06-27 22:34:33,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:33,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:35,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:35,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602448653] [2024-06-27 22:34:35,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602448653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:35,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:35,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:35,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339414183] [2024-06-27 22:34:35,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:35,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:35,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:35,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:35,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:35,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:35,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 545 transitions, 9501 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:35,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:35,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:35,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:36,864 INFO L124 PetriNetUnfolderBase]: 2844/5543 cut-off events. [2024-06-27 22:34:36,864 INFO L125 PetriNetUnfolderBase]: For 123482/123482 co-relation queries the response was YES. [2024-06-27 22:34:36,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39454 conditions, 5543 events. 2844/5543 cut-off events. For 123482/123482 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 44066 event pairs, 793 based on Foata normal form. 2/5308 useless extension candidates. Maximal degree in co-relation 39311. Up to 4151 conditions per place. [2024-06-27 22:34:36,928 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 481 selfloop transitions, 93 changer transitions 0/581 dead transitions. [2024-06-27 22:34:36,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 581 transitions, 10948 flow [2024-06-27 22:34:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 22:34:36,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165165165165165 [2024-06-27 22:34:36,930 INFO L175 Difference]: Start difference. First operand has 300 places, 545 transitions, 9501 flow. Second operand 9 states and 172 transitions. [2024-06-27 22:34:36,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 581 transitions, 10948 flow [2024-06-27 22:34:37,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 581 transitions, 10652 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:37,537 INFO L231 Difference]: Finished difference. Result has 301 places, 545 transitions, 9400 flow [2024-06-27 22:34:37,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9205, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9400, PETRI_PLACES=301, PETRI_TRANSITIONS=545} [2024-06-27 22:34:37,539 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 260 predicate places. [2024-06-27 22:34:37,539 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 545 transitions, 9400 flow [2024-06-27 22:34:37,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:37,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:37,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:37,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:34:37,539 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:37,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:37,542 INFO L85 PathProgramCache]: Analyzing trace with hash 994537041, now seen corresponding path program 11 times [2024-06-27 22:34:37,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:37,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740987159] [2024-06-27 22:34:37,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:37,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:38,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740987159] [2024-06-27 22:34:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740987159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:38,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:38,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:38,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492220723] [2024-06-27 22:34:38,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:38,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:38,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:39,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:39,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 545 transitions, 9400 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:39,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:39,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:39,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:40,615 INFO L124 PetriNetUnfolderBase]: 2863/5541 cut-off events. [2024-06-27 22:34:40,615 INFO L125 PetriNetUnfolderBase]: For 118879/118879 co-relation queries the response was YES. [2024-06-27 22:34:40,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39330 conditions, 5541 events. 2863/5541 cut-off events. For 118879/118879 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 43755 event pairs, 841 based on Foata normal form. 1/5314 useless extension candidates. Maximal degree in co-relation 39187. Up to 4395 conditions per place. [2024-06-27 22:34:40,695 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 538 selfloop transitions, 36 changer transitions 0/581 dead transitions. [2024-06-27 22:34:40,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 581 transitions, 10854 flow [2024-06-27 22:34:40,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:40,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:40,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 22:34:40,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:34:40,696 INFO L175 Difference]: Start difference. First operand has 301 places, 545 transitions, 9400 flow. Second operand 9 states and 153 transitions. [2024-06-27 22:34:40,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 581 transitions, 10854 flow [2024-06-27 22:34:41,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 581 transitions, 10651 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:41,391 INFO L231 Difference]: Finished difference. Result has 302 places, 551 transitions, 9367 flow [2024-06-27 22:34:41,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9197, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9367, PETRI_PLACES=302, PETRI_TRANSITIONS=551} [2024-06-27 22:34:41,392 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-27 22:34:41,392 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 551 transitions, 9367 flow [2024-06-27 22:34:41,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:41,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:41,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:41,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:34:41,393 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:41,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:41,393 INFO L85 PathProgramCache]: Analyzing trace with hash 998261908, now seen corresponding path program 6 times [2024-06-27 22:34:41,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:41,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515583334] [2024-06-27 22:34:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:41,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:43,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:43,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515583334] [2024-06-27 22:34:43,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515583334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:43,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:43,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:43,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011601685] [2024-06-27 22:34:43,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:43,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:43,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:43,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:43,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:43,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 551 transitions, 9367 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:43,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:43,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:43,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:44,767 INFO L124 PetriNetUnfolderBase]: 2991/5880 cut-off events. [2024-06-27 22:34:44,767 INFO L125 PetriNetUnfolderBase]: For 124780/124780 co-relation queries the response was YES. [2024-06-27 22:34:44,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40828 conditions, 5880 events. 2991/5880 cut-off events. For 124780/124780 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 47619 event pairs, 773 based on Foata normal form. 2/5619 useless extension candidates. Maximal degree in co-relation 40683. Up to 3769 conditions per place. [2024-06-27 22:34:44,843 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 437 selfloop transitions, 176 changer transitions 0/620 dead transitions. [2024-06-27 22:34:44,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 620 transitions, 11400 flow [2024-06-27 22:34:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:34:44,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:34:44,857 INFO L175 Difference]: Start difference. First operand has 302 places, 551 transitions, 9367 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:34:44,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 620 transitions, 11400 flow [2024-06-27 22:34:45,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 620 transitions, 11302 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:45,533 INFO L231 Difference]: Finished difference. Result has 307 places, 575 transitions, 10106 flow [2024-06-27 22:34:45,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9269, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10106, PETRI_PLACES=307, PETRI_TRANSITIONS=575} [2024-06-27 22:34:45,534 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-27 22:34:45,535 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 575 transitions, 10106 flow [2024-06-27 22:34:45,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:45,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:45,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:45,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:34:45,535 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:45,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:45,535 INFO L85 PathProgramCache]: Analyzing trace with hash 998261691, now seen corresponding path program 12 times [2024-06-27 22:34:45,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:45,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980742918] [2024-06-27 22:34:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:45,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:46,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:46,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980742918] [2024-06-27 22:34:46,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980742918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:46,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:46,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:46,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081531210] [2024-06-27 22:34:46,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:46,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:46,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:46,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:46,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:47,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:47,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 575 transitions, 10106 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:47,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:47,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:47,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:48,618 INFO L124 PetriNetUnfolderBase]: 3104/6030 cut-off events. [2024-06-27 22:34:48,619 INFO L125 PetriNetUnfolderBase]: For 136244/136244 co-relation queries the response was YES. [2024-06-27 22:34:48,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43391 conditions, 6030 events. 3104/6030 cut-off events. For 136244/136244 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 48520 event pairs, 826 based on Foata normal form. 1/5774 useless extension candidates. Maximal degree in co-relation 43244. Up to 4100 conditions per place. [2024-06-27 22:34:48,693 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 504 selfloop transitions, 128 changer transitions 0/639 dead transitions. [2024-06-27 22:34:48,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 639 transitions, 12321 flow [2024-06-27 22:34:48,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:34:48,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 22:34:48,695 INFO L175 Difference]: Start difference. First operand has 307 places, 575 transitions, 10106 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:34:48,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 639 transitions, 12321 flow [2024-06-27 22:34:49,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 639 transitions, 12160 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:49,418 INFO L231 Difference]: Finished difference. Result has 313 places, 596 transitions, 10658 flow [2024-06-27 22:34:49,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9945, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10658, PETRI_PLACES=313, PETRI_TRANSITIONS=596} [2024-06-27 22:34:49,420 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-27 22:34:49,420 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 596 transitions, 10658 flow [2024-06-27 22:34:49,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:49,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:49,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:49,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:34:49,423 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:49,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:49,424 INFO L85 PathProgramCache]: Analyzing trace with hash 998255956, now seen corresponding path program 1 times [2024-06-27 22:34:49,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:49,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332704241] [2024-06-27 22:34:49,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:49,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:51,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:51,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332704241] [2024-06-27 22:34:51,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332704241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:51,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:51,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:51,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000168656] [2024-06-27 22:34:51,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:51,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:51,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:51,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:51,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:51,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:51,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 596 transitions, 10658 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:51,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:51,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:51,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:52,867 INFO L124 PetriNetUnfolderBase]: 3143/6112 cut-off events. [2024-06-27 22:34:52,867 INFO L125 PetriNetUnfolderBase]: For 143106/143106 co-relation queries the response was YES. [2024-06-27 22:34:52,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45213 conditions, 6112 events. 3143/6112 cut-off events. For 143106/143106 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 49415 event pairs, 863 based on Foata normal form. 1/5854 useless extension candidates. Maximal degree in co-relation 45061. Up to 4512 conditions per place. [2024-06-27 22:34:52,954 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 526 selfloop transitions, 107 changer transitions 0/640 dead transitions. [2024-06-27 22:34:52,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 640 transitions, 12494 flow [2024-06-27 22:34:52,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:52,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:52,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:34:52,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 22:34:52,956 INFO L175 Difference]: Start difference. First operand has 313 places, 596 transitions, 10658 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:34:52,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 640 transitions, 12494 flow [2024-06-27 22:34:53,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 640 transitions, 12423 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 22:34:53,766 INFO L231 Difference]: Finished difference. Result has 320 places, 606 transitions, 11019 flow [2024-06-27 22:34:53,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10587, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11019, PETRI_PLACES=320, PETRI_TRANSITIONS=606} [2024-06-27 22:34:53,767 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-27 22:34:53,767 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 606 transitions, 11019 flow [2024-06-27 22:34:53,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:53,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:53,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:53,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:34:53,768 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:53,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:53,768 INFO L85 PathProgramCache]: Analyzing trace with hash 369838023, now seen corresponding path program 13 times [2024-06-27 22:34:53,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:53,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660582382] [2024-06-27 22:34:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:53,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:55,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:55,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660582382] [2024-06-27 22:34:55,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660582382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:55,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:55,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:55,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240663208] [2024-06-27 22:34:55,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:55,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:55,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:55,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:55,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:55,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:55,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 606 transitions, 11019 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:55,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:55,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:55,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:56,920 INFO L124 PetriNetUnfolderBase]: 3182/6213 cut-off events. [2024-06-27 22:34:56,920 INFO L125 PetriNetUnfolderBase]: For 149753/149753 co-relation queries the response was YES. [2024-06-27 22:34:56,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46289 conditions, 6213 events. 3182/6213 cut-off events. For 149753/149753 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 50470 event pairs, 753 based on Foata normal form. 1/5941 useless extension candidates. Maximal degree in co-relation 46134. Up to 3698 conditions per place. [2024-06-27 22:34:57,014 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 492 selfloop transitions, 166 changer transitions 0/665 dead transitions. [2024-06-27 22:34:57,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 665 transitions, 13086 flow [2024-06-27 22:34:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:57,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:34:57,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 22:34:57,015 INFO L175 Difference]: Start difference. First operand has 320 places, 606 transitions, 11019 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:34:57,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 665 transitions, 13086 flow [2024-06-27 22:34:57,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 665 transitions, 12929 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:57,889 INFO L231 Difference]: Finished difference. Result has 327 places, 618 transitions, 11508 flow [2024-06-27 22:34:57,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10862, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11508, PETRI_PLACES=327, PETRI_TRANSITIONS=618} [2024-06-27 22:34:57,890 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-27 22:34:57,891 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 618 transitions, 11508 flow [2024-06-27 22:34:57,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:57,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:57,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:57,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:34:57,891 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:57,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:57,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1142354031, now seen corresponding path program 14 times [2024-06-27 22:34:57,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:57,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800215561] [2024-06-27 22:34:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:57,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:59,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:59,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800215561] [2024-06-27 22:34:59,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800215561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:59,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:59,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:59,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95243105] [2024-06-27 22:34:59,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:59,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:59,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:59,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:59,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:59,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:59,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 618 transitions, 11508 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:59,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:59,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:59,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:01,043 INFO L124 PetriNetUnfolderBase]: 3239/6264 cut-off events. [2024-06-27 22:35:01,044 INFO L125 PetriNetUnfolderBase]: For 163262/163262 co-relation queries the response was YES. [2024-06-27 22:35:01,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48323 conditions, 6264 events. 3239/6264 cut-off events. For 163262/163262 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 50728 event pairs, 962 based on Foata normal form. 2/6006 useless extension candidates. Maximal degree in co-relation 48165. Up to 4945 conditions per place. [2024-06-27 22:35:01,131 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 572 selfloop transitions, 75 changer transitions 0/654 dead transitions. [2024-06-27 22:35:01,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 654 transitions, 13208 flow [2024-06-27 22:35:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:35:01,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 22:35:01,133 INFO L175 Difference]: Start difference. First operand has 327 places, 618 transitions, 11508 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:35:01,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 654 transitions, 13208 flow [2024-06-27 22:35:01,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 654 transitions, 13115 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-27 22:35:01,916 INFO L231 Difference]: Finished difference. Result has 333 places, 629 transitions, 11820 flow [2024-06-27 22:35:01,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11415, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11820, PETRI_PLACES=333, PETRI_TRANSITIONS=629} [2024-06-27 22:35:01,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-27 22:35:01,918 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 629 transitions, 11820 flow [2024-06-27 22:35:01,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:01,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:01,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:01,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:35:01,919 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:01,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:01,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1142146641, now seen corresponding path program 15 times [2024-06-27 22:35:01,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:01,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635776178] [2024-06-27 22:35:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:01,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:03,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:03,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635776178] [2024-06-27 22:35:03,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635776178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:03,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:03,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344172436] [2024-06-27 22:35:03,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:03,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:03,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:03,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:03,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 629 transitions, 11820 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:03,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:03,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:03,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:04,965 INFO L124 PetriNetUnfolderBase]: 3358/6530 cut-off events. [2024-06-27 22:35:04,965 INFO L125 PetriNetUnfolderBase]: For 175815/175815 co-relation queries the response was YES. [2024-06-27 22:35:05,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50671 conditions, 6530 events. 3358/6530 cut-off events. For 175815/175815 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 53492 event pairs, 956 based on Foata normal form. 2/6248 useless extension candidates. Maximal degree in co-relation 50511. Up to 4862 conditions per place. [2024-06-27 22:35:05,069 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 556 selfloop transitions, 120 changer transitions 0/683 dead transitions. [2024-06-27 22:35:05,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 683 transitions, 14054 flow [2024-06-27 22:35:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:35:05,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:35:05,071 INFO L175 Difference]: Start difference. First operand has 333 places, 629 transitions, 11820 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:35:05,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 683 transitions, 14054 flow [2024-06-27 22:35:05,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 683 transitions, 13787 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:05,960 INFO L231 Difference]: Finished difference. Result has 336 places, 651 transitions, 12355 flow [2024-06-27 22:35:05,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11553, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12355, PETRI_PLACES=336, PETRI_TRANSITIONS=651} [2024-06-27 22:35:05,961 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 295 predicate places. [2024-06-27 22:35:05,961 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 651 transitions, 12355 flow [2024-06-27 22:35:05,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:05,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:05,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:05,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:35:05,962 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:05,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:05,962 INFO L85 PathProgramCache]: Analyzing trace with hash -272718896, now seen corresponding path program 2 times [2024-06-27 22:35:05,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:05,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784342582] [2024-06-27 22:35:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:05,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:07,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:07,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:07,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784342582] [2024-06-27 22:35:07,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784342582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:07,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:07,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:07,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339242525] [2024-06-27 22:35:07,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:07,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:07,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:07,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:07,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 651 transitions, 12355 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:07,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:07,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:07,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:09,491 INFO L124 PetriNetUnfolderBase]: 3355/6477 cut-off events. [2024-06-27 22:35:09,491 INFO L125 PetriNetUnfolderBase]: For 175220/175220 co-relation queries the response was YES. [2024-06-27 22:35:09,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50826 conditions, 6477 events. 3355/6477 cut-off events. For 175220/175220 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 52654 event pairs, 975 based on Foata normal form. 1/6212 useless extension candidates. Maximal degree in co-relation 50665. Up to 5179 conditions per place. [2024-06-27 22:35:09,576 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 619 selfloop transitions, 51 changer transitions 0/677 dead transitions. [2024-06-27 22:35:09,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 677 transitions, 13901 flow [2024-06-27 22:35:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:09,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 22:35:09,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45645645645645644 [2024-06-27 22:35:09,577 INFO L175 Difference]: Start difference. First operand has 336 places, 651 transitions, 12355 flow. Second operand 9 states and 152 transitions. [2024-06-27 22:35:09,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 677 transitions, 13901 flow [2024-06-27 22:35:10,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 677 transitions, 13655 flow, removed 93 selfloop flow, removed 4 redundant places. [2024-06-27 22:35:10,372 INFO L231 Difference]: Finished difference. Result has 341 places, 651 transitions, 12222 flow [2024-06-27 22:35:10,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12109, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12222, PETRI_PLACES=341, PETRI_TRANSITIONS=651} [2024-06-27 22:35:10,373 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-27 22:35:10,373 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 651 transitions, 12222 flow [2024-06-27 22:35:10,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:10,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:10,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:10,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:35:10,374 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:10,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1142152438, now seen corresponding path program 7 times [2024-06-27 22:35:10,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:10,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784319780] [2024-06-27 22:35:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:10,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:12,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:12,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784319780] [2024-06-27 22:35:12,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784319780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:12,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:12,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:12,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554121335] [2024-06-27 22:35:12,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:12,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:12,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:12,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:12,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:12,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:12,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 651 transitions, 12222 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:12,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:12,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:12,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:13,999 INFO L124 PetriNetUnfolderBase]: 3459/6693 cut-off events. [2024-06-27 22:35:13,999 INFO L125 PetriNetUnfolderBase]: For 184609/184609 co-relation queries the response was YES. [2024-06-27 22:35:14,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52175 conditions, 6693 events. 3459/6693 cut-off events. For 184609/184609 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 54818 event pairs, 995 based on Foata normal form. 2/6415 useless extension candidates. Maximal degree in co-relation 52012. Up to 5159 conditions per place. [2024-06-27 22:35:14,100 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 598 selfloop transitions, 92 changer transitions 0/697 dead transitions. [2024-06-27 22:35:14,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 697 transitions, 14237 flow [2024-06-27 22:35:14,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:35:14,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:35:14,102 INFO L175 Difference]: Start difference. First operand has 341 places, 651 transitions, 12222 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:35:14,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 697 transitions, 14237 flow [2024-06-27 22:35:15,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 697 transitions, 14127 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 22:35:15,062 INFO L231 Difference]: Finished difference. Result has 344 places, 663 transitions, 12564 flow [2024-06-27 22:35:15,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12112, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12564, PETRI_PLACES=344, PETRI_TRANSITIONS=663} [2024-06-27 22:35:15,062 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-27 22:35:15,063 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 663 transitions, 12564 flow [2024-06-27 22:35:15,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:15,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:15,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:15,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:35:15,063 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:15,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:15,064 INFO L85 PathProgramCache]: Analyzing trace with hash -272511134, now seen corresponding path program 8 times [2024-06-27 22:35:15,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:15,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668859090] [2024-06-27 22:35:15,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:15,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:16,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:16,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668859090] [2024-06-27 22:35:16,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668859090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:16,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:16,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:16,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742409902] [2024-06-27 22:35:16,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:16,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:16,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:16,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 663 transitions, 12564 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:16,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:16,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:16,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:18,540 INFO L124 PetriNetUnfolderBase]: 3455/6650 cut-off events. [2024-06-27 22:35:18,540 INFO L125 PetriNetUnfolderBase]: For 184106/184106 co-relation queries the response was YES. [2024-06-27 22:35:18,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52242 conditions, 6650 events. 3455/6650 cut-off events. For 184106/184106 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 54109 event pairs, 1017 based on Foata normal form. 2/6382 useless extension candidates. Maximal degree in co-relation 52078. Up to 5278 conditions per place. [2024-06-27 22:35:18,635 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 609 selfloop transitions, 73 changer transitions 0/689 dead transitions. [2024-06-27 22:35:18,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 689 transitions, 14108 flow [2024-06-27 22:35:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:18,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:35:18,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 22:35:18,636 INFO L175 Difference]: Start difference. First operand has 344 places, 663 transitions, 12564 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:35:18,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 689 transitions, 14108 flow [2024-06-27 22:35:19,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 689 transitions, 13944 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 22:35:19,559 INFO L231 Difference]: Finished difference. Result has 348 places, 663 transitions, 12562 flow [2024-06-27 22:35:19,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12400, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12562, PETRI_PLACES=348, PETRI_TRANSITIONS=663} [2024-06-27 22:35:19,560 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 307 predicate places. [2024-06-27 22:35:19,560 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 663 transitions, 12562 flow [2024-06-27 22:35:19,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:19,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:19,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:19,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:35:19,561 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:19,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:19,561 INFO L85 PathProgramCache]: Analyzing trace with hash -528780567, now seen corresponding path program 16 times [2024-06-27 22:35:19,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:19,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467902884] [2024-06-27 22:35:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:19,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:20,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:20,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:20,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467902884] [2024-06-27 22:35:20,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467902884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:20,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:20,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:20,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284160150] [2024-06-27 22:35:20,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:20,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:20,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:20,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:20,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:21,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:21,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 663 transitions, 12562 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:21,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:21,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:21,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:22,874 INFO L124 PetriNetUnfolderBase]: 3524/6857 cut-off events. [2024-06-27 22:35:22,874 INFO L125 PetriNetUnfolderBase]: For 192602/192602 co-relation queries the response was YES. [2024-06-27 22:35:22,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53324 conditions, 6857 events. 3524/6857 cut-off events. For 192602/192602 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 56633 event pairs, 942 based on Foata normal form. 2/6561 useless extension candidates. Maximal degree in co-relation 53158. Up to 4788 conditions per place. [2024-06-27 22:35:22,984 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 571 selfloop transitions, 147 changer transitions 0/725 dead transitions. [2024-06-27 22:35:22,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 725 transitions, 14836 flow [2024-06-27 22:35:22,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:22,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:35:22,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:35:22,985 INFO L175 Difference]: Start difference. First operand has 348 places, 663 transitions, 12562 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:35:22,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 725 transitions, 14836 flow [2024-06-27 22:35:23,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 725 transitions, 14617 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:23,944 INFO L231 Difference]: Finished difference. Result has 351 places, 675 transitions, 12940 flow [2024-06-27 22:35:23,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12343, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12940, PETRI_PLACES=351, PETRI_TRANSITIONS=675} [2024-06-27 22:35:23,945 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 310 predicate places. [2024-06-27 22:35:23,945 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 675 transitions, 12940 flow [2024-06-27 22:35:23,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:23,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:23,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:23,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:35:23,946 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:23,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:23,946 INFO L85 PathProgramCache]: Analyzing trace with hash 486772485, now seen corresponding path program 17 times [2024-06-27 22:35:23,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:23,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630493029] [2024-06-27 22:35:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:23,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:24,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:24,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630493029] [2024-06-27 22:35:24,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630493029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:24,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:24,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:24,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571100791] [2024-06-27 22:35:24,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:24,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:24,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:24,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:25,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:25,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 675 transitions, 12940 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:25,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:25,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:25,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:26,948 INFO L124 PetriNetUnfolderBase]: 3624/6944 cut-off events. [2024-06-27 22:35:26,948 INFO L125 PetriNetUnfolderBase]: For 210471/210471 co-relation queries the response was YES. [2024-06-27 22:35:27,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55321 conditions, 6944 events. 3624/6944 cut-off events. For 210471/210471 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 56787 event pairs, 1078 based on Foata normal form. 6/6673 useless extension candidates. Maximal degree in co-relation 55153. Up to 5370 conditions per place. [2024-06-27 22:35:27,058 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 656 selfloop transitions, 73 changer transitions 0/736 dead transitions. [2024-06-27 22:35:27,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 736 transitions, 15200 flow [2024-06-27 22:35:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:27,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:35:27,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:35:27,059 INFO L175 Difference]: Start difference. First operand has 351 places, 675 transitions, 12940 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:35:27,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 736 transitions, 15200 flow [2024-06-27 22:35:28,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 736 transitions, 15044 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-27 22:35:28,133 INFO L231 Difference]: Finished difference. Result has 356 places, 689 transitions, 13310 flow [2024-06-27 22:35:28,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12784, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13310, PETRI_PLACES=356, PETRI_TRANSITIONS=689} [2024-06-27 22:35:28,133 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 315 predicate places. [2024-06-27 22:35:28,133 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 689 transitions, 13310 flow [2024-06-27 22:35:28,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:28,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:28,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:28,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:35:28,134 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:28,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:28,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2002543370, now seen corresponding path program 9 times [2024-06-27 22:35:28,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:28,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960964751] [2024-06-27 22:35:28,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:28,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:29,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:29,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960964751] [2024-06-27 22:35:29,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960964751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:29,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:29,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:29,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063073765] [2024-06-27 22:35:29,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:29,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:29,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:29,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:29,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:29,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:29,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 689 transitions, 13310 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:29,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:29,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:29,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:31,775 INFO L124 PetriNetUnfolderBase]: 3674/7020 cut-off events. [2024-06-27 22:35:31,775 INFO L125 PetriNetUnfolderBase]: For 206189/206189 co-relation queries the response was YES. [2024-06-27 22:35:31,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56413 conditions, 7020 events. 3674/7020 cut-off events. For 206189/206189 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 57335 event pairs, 1147 based on Foata normal form. 2/6747 useless extension candidates. Maximal degree in co-relation 56243. Up to 5678 conditions per place. [2024-06-27 22:35:31,884 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 668 selfloop transitions, 50 changer transitions 0/725 dead transitions. [2024-06-27 22:35:31,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 725 transitions, 15167 flow [2024-06-27 22:35:31,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:31,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 22:35:31,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:35:31,886 INFO L175 Difference]: Start difference. First operand has 356 places, 689 transitions, 13310 flow. Second operand 9 states and 153 transitions. [2024-06-27 22:35:31,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 725 transitions, 15167 flow [2024-06-27 22:35:32,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 725 transitions, 14860 flow, removed 93 selfloop flow, removed 6 redundant places. [2024-06-27 22:35:32,989 INFO L231 Difference]: Finished difference. Result has 359 places, 699 transitions, 13341 flow [2024-06-27 22:35:32,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13003, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13341, PETRI_PLACES=359, PETRI_TRANSITIONS=699} [2024-06-27 22:35:32,990 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-27 22:35:32,990 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 699 transitions, 13341 flow [2024-06-27 22:35:32,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:32,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:32,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:32,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:35:32,991 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:32,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:32,991 INFO L85 PathProgramCache]: Analyzing trace with hash 626306905, now seen corresponding path program 18 times [2024-06-27 22:35:32,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:32,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939110965] [2024-06-27 22:35:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:32,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:34,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:34,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939110965] [2024-06-27 22:35:34,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939110965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:34,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:34,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:34,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186283998] [2024-06-27 22:35:34,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:34,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:34,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:34,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:34,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:34,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:34,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 699 transitions, 13341 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:34,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:34,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:34,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:36,705 INFO L124 PetriNetUnfolderBase]: 3770/7252 cut-off events. [2024-06-27 22:35:36,705 INFO L125 PetriNetUnfolderBase]: For 218751/218751 co-relation queries the response was YES. [2024-06-27 22:35:36,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57872 conditions, 7252 events. 3770/7252 cut-off events. For 218751/218751 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 59736 event pairs, 1121 based on Foata normal form. 2/6954 useless extension candidates. Maximal degree in co-relation 57701. Up to 5437 conditions per place. [2024-06-27 22:35:36,805 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 638 selfloop transitions, 105 changer transitions 0/750 dead transitions. [2024-06-27 22:35:36,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 750 transitions, 15707 flow [2024-06-27 22:35:36,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:35:36,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:35:36,807 INFO L175 Difference]: Start difference. First operand has 359 places, 699 transitions, 13341 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:35:36,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 750 transitions, 15707 flow [2024-06-27 22:35:37,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 750 transitions, 15554 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 22:35:37,844 INFO L231 Difference]: Finished difference. Result has 364 places, 714 transitions, 13864 flow [2024-06-27 22:35:37,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13188, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13864, PETRI_PLACES=364, PETRI_TRANSITIONS=714} [2024-06-27 22:35:37,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 323 predicate places. [2024-06-27 22:35:37,845 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 714 transitions, 13864 flow [2024-06-27 22:35:37,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:37,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:37,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:37,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:35:37,846 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:37,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:37,846 INFO L85 PathProgramCache]: Analyzing trace with hash -413173667, now seen corresponding path program 19 times [2024-06-27 22:35:37,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:37,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098293295] [2024-06-27 22:35:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:39,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:39,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098293295] [2024-06-27 22:35:39,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098293295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:39,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:39,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:39,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020484802] [2024-06-27 22:35:39,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:39,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:39,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:39,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:39,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:39,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:39,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 714 transitions, 13864 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:39,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:39,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:39,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:41,515 INFO L124 PetriNetUnfolderBase]: 3820/7354 cut-off events. [2024-06-27 22:35:41,515 INFO L125 PetriNetUnfolderBase]: For 228045/228045 co-relation queries the response was YES. [2024-06-27 22:35:41,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59292 conditions, 7354 events. 3820/7354 cut-off events. For 228045/228045 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 60797 event pairs, 1165 based on Foata normal form. 2/7054 useless extension candidates. Maximal degree in co-relation 59119. Up to 5479 conditions per place. [2024-06-27 22:35:41,634 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 649 selfloop transitions, 105 changer transitions 0/761 dead transitions. [2024-06-27 22:35:41,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 761 transitions, 16179 flow [2024-06-27 22:35:41,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:41,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:35:41,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:35:41,635 INFO L175 Difference]: Start difference. First operand has 364 places, 714 transitions, 13864 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:35:41,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 761 transitions, 16179 flow [2024-06-27 22:35:42,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 761 transitions, 15776 flow, removed 163 selfloop flow, removed 5 redundant places. [2024-06-27 22:35:42,820 INFO L231 Difference]: Finished difference. Result has 368 places, 723 transitions, 13955 flow [2024-06-27 22:35:42,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13533, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13955, PETRI_PLACES=368, PETRI_TRANSITIONS=723} [2024-06-27 22:35:42,820 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 22:35:42,821 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 723 transitions, 13955 flow [2024-06-27 22:35:42,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:42,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:42,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:42,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:35:42,821 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:42,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:42,821 INFO L85 PathProgramCache]: Analyzing trace with hash -128765500, now seen corresponding path program 10 times [2024-06-27 22:35:42,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:42,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544237579] [2024-06-27 22:35:42,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:42,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:44,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:44,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544237579] [2024-06-27 22:35:44,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544237579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:44,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:44,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:44,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190835304] [2024-06-27 22:35:44,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:44,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:44,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:44,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:44,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:44,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:44,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 723 transitions, 13955 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:44,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:44,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:44,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:46,256 INFO L124 PetriNetUnfolderBase]: 3876/7409 cut-off events. [2024-06-27 22:35:46,256 INFO L125 PetriNetUnfolderBase]: For 228312/228312 co-relation queries the response was YES. [2024-06-27 22:35:46,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59751 conditions, 7409 events. 3876/7409 cut-off events. For 228312/228312 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 60999 event pairs, 1169 based on Foata normal form. 2/7119 useless extension candidates. Maximal degree in co-relation 59576. Up to 5843 conditions per place. [2024-06-27 22:35:46,381 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 697 selfloop transitions, 60 changer transitions 0/764 dead transitions. [2024-06-27 22:35:46,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 764 transitions, 15913 flow [2024-06-27 22:35:46,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:35:46,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:35:46,382 INFO L175 Difference]: Start difference. First operand has 368 places, 723 transitions, 13955 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:35:46,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 764 transitions, 15913 flow [2024-06-27 22:35:47,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 764 transitions, 15692 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:47,578 INFO L231 Difference]: Finished difference. Result has 371 places, 731 transitions, 14064 flow [2024-06-27 22:35:47,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13734, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14064, PETRI_PLACES=371, PETRI_TRANSITIONS=731} [2024-06-27 22:35:47,578 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-27 22:35:47,578 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 731 transitions, 14064 flow [2024-06-27 22:35:47,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:47,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:47,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:47,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:35:47,579 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:47,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:47,579 INFO L85 PathProgramCache]: Analyzing trace with hash 626312702, now seen corresponding path program 11 times [2024-06-27 22:35:47,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:47,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708801518] [2024-06-27 22:35:47,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:47,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:49,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:49,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708801518] [2024-06-27 22:35:49,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708801518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:49,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:49,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:49,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339016322] [2024-06-27 22:35:49,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:49,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:49,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:49,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:49,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:49,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:49,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 731 transitions, 14064 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:49,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:49,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:49,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:51,611 INFO L124 PetriNetUnfolderBase]: 3872/7425 cut-off events. [2024-06-27 22:35:51,612 INFO L125 PetriNetUnfolderBase]: For 226274/226274 co-relation queries the response was YES. [2024-06-27 22:35:51,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59424 conditions, 7425 events. 3872/7425 cut-off events. For 226274/226274 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 61283 event pairs, 1173 based on Foata normal form. 2/7129 useless extension candidates. Maximal degree in co-relation 59248. Up to 5786 conditions per place. [2024-06-27 22:35:51,730 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 677 selfloop transitions, 78 changer transitions 0/762 dead transitions. [2024-06-27 22:35:51,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 762 transitions, 15841 flow [2024-06-27 22:35:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:35:51,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:35:51,731 INFO L175 Difference]: Start difference. First operand has 371 places, 731 transitions, 14064 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:35:51,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 762 transitions, 15841 flow [2024-06-27 22:35:52,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 762 transitions, 15617 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-27 22:35:52,887 INFO L231 Difference]: Finished difference. Result has 372 places, 731 transitions, 14007 flow [2024-06-27 22:35:52,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13840, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14007, PETRI_PLACES=372, PETRI_TRANSITIONS=731} [2024-06-27 22:35:52,888 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 331 predicate places. [2024-06-27 22:35:52,888 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 731 transitions, 14007 flow [2024-06-27 22:35:52,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:52,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:52,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:52,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:35:52,889 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:52,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:52,889 INFO L85 PathProgramCache]: Analyzing trace with hash 910720435, now seen corresponding path program 20 times [2024-06-27 22:35:52,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:52,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026142970] [2024-06-27 22:35:52,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:52,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:54,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:54,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026142970] [2024-06-27 22:35:54,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026142970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:54,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:54,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:54,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804922285] [2024-06-27 22:35:54,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:54,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:54,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:54,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:54,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:54,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:54,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 731 transitions, 14007 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:54,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:54,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:54,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:56,254 INFO L124 PetriNetUnfolderBase]: 3860/7369 cut-off events. [2024-06-27 22:35:56,254 INFO L125 PetriNetUnfolderBase]: For 221645/221645 co-relation queries the response was YES. [2024-06-27 22:35:56,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58640 conditions, 7369 events. 3860/7369 cut-off events. For 221645/221645 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 60584 event pairs, 1173 based on Foata normal form. 6/7087 useless extension candidates. Maximal degree in co-relation 58464. Up to 5845 conditions per place. [2024-06-27 22:35:56,382 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 699 selfloop transitions, 54 changer transitions 0/760 dead transitions. [2024-06-27 22:35:56,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 760 transitions, 15767 flow [2024-06-27 22:35:56,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 22:35:56,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 22:35:56,384 INFO L175 Difference]: Start difference. First operand has 372 places, 731 transitions, 14007 flow. Second operand 9 states and 155 transitions. [2024-06-27 22:35:56,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 760 transitions, 15767 flow [2024-06-27 22:35:57,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 760 transitions, 15438 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:57,645 INFO L231 Difference]: Finished difference. Result has 373 places, 731 transitions, 13811 flow [2024-06-27 22:35:57,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13680, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13811, PETRI_PLACES=373, PETRI_TRANSITIONS=731} [2024-06-27 22:35:57,645 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-27 22:35:57,645 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 731 transitions, 13811 flow [2024-06-27 22:35:57,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:57,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:57,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:57,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:35:57,646 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:57,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:57,646 INFO L85 PathProgramCache]: Analyzing trace with hash 520854174, now seen corresponding path program 1 times [2024-06-27 22:35:57,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:57,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156339424] [2024-06-27 22:35:57,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:57,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:57,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:57,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156339424] [2024-06-27 22:35:57,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156339424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:57,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:57,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:35:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231947059] [2024-06-27 22:35:57,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:57,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:35:57,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:35:57,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:35:57,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-06-27 22:35:57,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 731 transitions, 13811 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:57,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:57,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-06-27 22:35:57,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:58,451 INFO L124 PetriNetUnfolderBase]: 1590/2848 cut-off events. [2024-06-27 22:35:58,451 INFO L125 PetriNetUnfolderBase]: For 114665/114776 co-relation queries the response was YES. [2024-06-27 22:35:58,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26370 conditions, 2848 events. 1590/2848 cut-off events. For 114665/114776 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 18281 event pairs, 372 based on Foata normal form. 309/2916 useless extension candidates. Maximal degree in co-relation 26195. Up to 1348 conditions per place. [2024-06-27 22:35:58,493 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 213 selfloop transitions, 164 changer transitions 0/603 dead transitions. [2024-06-27 22:35:58,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 603 transitions, 12512 flow [2024-06-27 22:35:58,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:35:58,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:35:58,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-27 22:35:58,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6891891891891891 [2024-06-27 22:35:58,495 INFO L175 Difference]: Start difference. First operand has 373 places, 731 transitions, 13811 flow. Second operand 4 states and 102 transitions. [2024-06-27 22:35:58,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 603 transitions, 12512 flow [2024-06-27 22:35:59,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 603 transitions, 10708 flow, removed 309 selfloop flow, removed 55 redundant places. [2024-06-27 22:35:59,031 INFO L231 Difference]: Finished difference. Result has 323 places, 589 transitions, 10490 flow [2024-06-27 22:35:59,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9780, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=10490, PETRI_PLACES=323, PETRI_TRANSITIONS=589} [2024-06-27 22:35:59,032 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-27 22:35:59,032 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 589 transitions, 10490 flow [2024-06-27 22:35:59,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:59,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:59,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:59,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:35:59,033 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:59,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:59,033 INFO L85 PathProgramCache]: Analyzing trace with hash -663175558, now seen corresponding path program 1 times [2024-06-27 22:35:59,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:59,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264979007] [2024-06-27 22:35:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:59,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:59,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:59,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264979007] [2024-06-27 22:35:59,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264979007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:59,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:59,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:59,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863768481] [2024-06-27 22:35:59,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:59,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:59,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:59,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:59,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:59,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 589 transitions, 10490 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:59,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:59,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:59,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:00,773 INFO L124 PetriNetUnfolderBase]: 1530/2759 cut-off events. [2024-06-27 22:36:00,773 INFO L125 PetriNetUnfolderBase]: For 136766/136766 co-relation queries the response was YES. [2024-06-27 22:36:00,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24759 conditions, 2759 events. 1530/2759 cut-off events. For 136766/136766 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 16913 event pairs, 265 based on Foata normal form. 2/2604 useless extension candidates. Maximal degree in co-relation 24603. Up to 2241 conditions per place. [2024-06-27 22:36:00,809 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 530 selfloop transitions, 94 changer transitions 0/632 dead transitions. [2024-06-27 22:36:00,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 632 transitions, 12225 flow [2024-06-27 22:36:00,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:00,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:36:00,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 22:36:00,810 INFO L175 Difference]: Start difference. First operand has 323 places, 589 transitions, 10490 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:36:00,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 632 transitions, 12225 flow [2024-06-27 22:36:01,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 632 transitions, 12183 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 22:36:01,489 INFO L231 Difference]: Finished difference. Result has 332 places, 592 transitions, 10707 flow [2024-06-27 22:36:01,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10462, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10707, PETRI_PLACES=332, PETRI_TRANSITIONS=592} [2024-06-27 22:36:01,493 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-27 22:36:01,493 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 592 transitions, 10707 flow [2024-06-27 22:36:01,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:01,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:01,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:01,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:36:01,494 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:01,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:01,494 INFO L85 PathProgramCache]: Analyzing trace with hash 254857452, now seen corresponding path program 2 times [2024-06-27 22:36:01,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:01,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799517480] [2024-06-27 22:36:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:01,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:02,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:02,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799517480] [2024-06-27 22:36:02,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799517480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:02,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:02,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:02,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861713563] [2024-06-27 22:36:02,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:02,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:02,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:02,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:02,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:02,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:02,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 592 transitions, 10707 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:02,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:02,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:02,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:03,347 INFO L124 PetriNetUnfolderBase]: 1538/2791 cut-off events. [2024-06-27 22:36:03,347 INFO L125 PetriNetUnfolderBase]: For 133426/133426 co-relation queries the response was YES. [2024-06-27 22:36:03,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24914 conditions, 2791 events. 1538/2791 cut-off events. For 133426/133426 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 17189 event pairs, 297 based on Foata normal form. 2/2632 useless extension candidates. Maximal degree in co-relation 24755. Up to 2328 conditions per place. [2024-06-27 22:36:03,385 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 527 selfloop transitions, 92 changer transitions 0/627 dead transitions. [2024-06-27 22:36:03,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 627 transitions, 12226 flow [2024-06-27 22:36:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:03,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:36:03,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:36:03,386 INFO L175 Difference]: Start difference. First operand has 332 places, 592 transitions, 10707 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:36:03,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 627 transitions, 12226 flow [2024-06-27 22:36:04,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 627 transitions, 12076 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:04,091 INFO L231 Difference]: Finished difference. Result has 337 places, 593 transitions, 10769 flow [2024-06-27 22:36:04,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10569, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10769, PETRI_PLACES=337, PETRI_TRANSITIONS=593} [2024-06-27 22:36:04,092 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-27 22:36:04,092 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 593 transitions, 10769 flow [2024-06-27 22:36:04,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:04,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:04,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:04,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:36:04,092 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:04,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:04,093 INFO L85 PathProgramCache]: Analyzing trace with hash 819023754, now seen corresponding path program 3 times [2024-06-27 22:36:04,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:04,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166524989] [2024-06-27 22:36:04,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:04,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:04,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:04,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:04,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166524989] [2024-06-27 22:36:04,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166524989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:04,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:04,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:04,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287782319] [2024-06-27 22:36:04,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:04,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:04,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:36:04,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 593 transitions, 10769 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:04,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:04,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:36:04,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:05,593 INFO L124 PetriNetUnfolderBase]: 1551/2868 cut-off events. [2024-06-27 22:36:05,593 INFO L125 PetriNetUnfolderBase]: For 142755/142765 co-relation queries the response was YES. [2024-06-27 22:36:05,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24796 conditions, 2868 events. 1551/2868 cut-off events. For 142755/142765 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 18134 event pairs, 206 based on Foata normal form. 6/2710 useless extension candidates. Maximal degree in co-relation 24635. Up to 1710 conditions per place. [2024-06-27 22:36:05,634 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 394 selfloop transitions, 80 changer transitions 0/646 dead transitions. [2024-06-27 22:36:05,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 646 transitions, 12279 flow [2024-06-27 22:36:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 22:36:05,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012285012285013 [2024-06-27 22:36:05,635 INFO L175 Difference]: Start difference. First operand has 337 places, 593 transitions, 10769 flow. Second operand 11 states and 204 transitions. [2024-06-27 22:36:05,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 646 transitions, 12279 flow [2024-06-27 22:36:06,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 646 transitions, 12100 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:06,437 INFO L231 Difference]: Finished difference. Result has 341 places, 599 transitions, 10927 flow [2024-06-27 22:36:06,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10590, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10927, PETRI_PLACES=341, PETRI_TRANSITIONS=599} [2024-06-27 22:36:06,438 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-27 22:36:06,438 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 599 transitions, 10927 flow [2024-06-27 22:36:06,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:06,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:06,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:36:06,438 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:06,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2147040192, now seen corresponding path program 1 times [2024-06-27 22:36:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393542447] [2024-06-27 22:36:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:07,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:07,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393542447] [2024-06-27 22:36:07,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393542447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:07,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:07,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:07,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551622189] [2024-06-27 22:36:07,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:07,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:07,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:07,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:07,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 599 transitions, 10927 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:07,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:07,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:07,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:09,280 INFO L124 PetriNetUnfolderBase]: 1682/3064 cut-off events. [2024-06-27 22:36:09,281 INFO L125 PetriNetUnfolderBase]: For 176873/176873 co-relation queries the response was YES. [2024-06-27 22:36:09,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27785 conditions, 3064 events. 1682/3064 cut-off events. For 176873/176873 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 19338 event pairs, 334 based on Foata normal form. 4/2886 useless extension candidates. Maximal degree in co-relation 27620. Up to 2407 conditions per place. [2024-06-27 22:36:09,321 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 537 selfloop transitions, 105 changer transitions 0/650 dead transitions. [2024-06-27 22:36:09,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 650 transitions, 13111 flow [2024-06-27 22:36:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:36:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:36:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 211 transitions. [2024-06-27 22:36:09,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4386694386694387 [2024-06-27 22:36:09,322 INFO L175 Difference]: Start difference. First operand has 341 places, 599 transitions, 10927 flow. Second operand 13 states and 211 transitions. [2024-06-27 22:36:09,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 650 transitions, 13111 flow [2024-06-27 22:36:10,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 650 transitions, 12974 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:10,131 INFO L231 Difference]: Finished difference. Result has 347 places, 609 transitions, 11300 flow [2024-06-27 22:36:10,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10798, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11300, PETRI_PLACES=347, PETRI_TRANSITIONS=609} [2024-06-27 22:36:10,131 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 306 predicate places. [2024-06-27 22:36:10,131 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 609 transitions, 11300 flow [2024-06-27 22:36:10,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:10,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:10,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:10,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:36:10,132 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:10,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:10,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1284865692, now seen corresponding path program 4 times [2024-06-27 22:36:10,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:10,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588386936] [2024-06-27 22:36:10,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:10,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:11,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:11,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588386936] [2024-06-27 22:36:11,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588386936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:11,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:11,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240040759] [2024-06-27 22:36:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:11,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:11,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:11,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:11,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:11,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 609 transitions, 11300 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:11,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:11,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:11,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:13,435 INFO L124 PetriNetUnfolderBase]: 1821/3396 cut-off events. [2024-06-27 22:36:13,436 INFO L125 PetriNetUnfolderBase]: For 176370/176370 co-relation queries the response was YES. [2024-06-27 22:36:13,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29574 conditions, 3396 events. 1821/3396 cut-off events. For 176370/176370 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 22447 event pairs, 386 based on Foata normal form. 2/3194 useless extension candidates. Maximal degree in co-relation 29409. Up to 2700 conditions per place. [2024-06-27 22:36:13,481 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 573 selfloop transitions, 86 changer transitions 0/667 dead transitions. [2024-06-27 22:36:13,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 667 transitions, 13264 flow [2024-06-27 22:36:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:36:13,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:36:13,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 207 transitions. [2024-06-27 22:36:13,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303534303534304 [2024-06-27 22:36:13,482 INFO L175 Difference]: Start difference. First operand has 347 places, 609 transitions, 11300 flow. Second operand 13 states and 207 transitions. [2024-06-27 22:36:13,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 667 transitions, 13264 flow [2024-06-27 22:36:14,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 667 transitions, 12996 flow, removed 83 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:14,380 INFO L231 Difference]: Finished difference. Result has 355 places, 628 transitions, 11524 flow [2024-06-27 22:36:14,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11050, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11524, PETRI_PLACES=355, PETRI_TRANSITIONS=628} [2024-06-27 22:36:14,381 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 314 predicate places. [2024-06-27 22:36:14,381 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 628 transitions, 11524 flow [2024-06-27 22:36:14,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:14,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:14,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:14,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:36:14,382 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:14,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:14,382 INFO L85 PathProgramCache]: Analyzing trace with hash -421583206, now seen corresponding path program 2 times [2024-06-27 22:36:14,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:14,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970510575] [2024-06-27 22:36:14,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:14,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:16,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:16,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970510575] [2024-06-27 22:36:16,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970510575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:16,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:16,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:16,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467439073] [2024-06-27 22:36:16,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:16,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:16,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:16,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:16,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:16,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:16,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 628 transitions, 11524 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:16,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:16,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:16,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:17,462 INFO L124 PetriNetUnfolderBase]: 1888/3524 cut-off events. [2024-06-27 22:36:17,462 INFO L125 PetriNetUnfolderBase]: For 186305/186305 co-relation queries the response was YES. [2024-06-27 22:36:17,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30405 conditions, 3524 events. 1888/3524 cut-off events. For 186305/186305 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 23454 event pairs, 427 based on Foata normal form. 4/3302 useless extension candidates. Maximal degree in co-relation 30236. Up to 2917 conditions per place. [2024-06-27 22:36:17,511 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 568 selfloop transitions, 94 changer transitions 0/670 dead transitions. [2024-06-27 22:36:17,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 670 transitions, 13392 flow [2024-06-27 22:36:17,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:36:17,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:36:17,513 INFO L175 Difference]: Start difference. First operand has 355 places, 628 transitions, 11524 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:36:17,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 670 transitions, 13392 flow [2024-06-27 22:36:18,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 670 transitions, 13250 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:18,539 INFO L231 Difference]: Finished difference. Result has 359 places, 642 transitions, 11821 flow [2024-06-27 22:36:18,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11382, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11821, PETRI_PLACES=359, PETRI_TRANSITIONS=642} [2024-06-27 22:36:18,540 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-27 22:36:18,540 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 642 transitions, 11821 flow [2024-06-27 22:36:18,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:18,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:18,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:18,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:36:18,540 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:18,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:18,541 INFO L85 PathProgramCache]: Analyzing trace with hash -508392506, now seen corresponding path program 5 times [2024-06-27 22:36:18,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:18,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216502444] [2024-06-27 22:36:18,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:18,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:20,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:20,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216502444] [2024-06-27 22:36:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216502444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:20,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:20,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:20,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552377221] [2024-06-27 22:36:20,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:20,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:20,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:20,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:20,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:20,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:20,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 642 transitions, 11821 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:20,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:20,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:20,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:21,882 INFO L124 PetriNetUnfolderBase]: 1951/3674 cut-off events. [2024-06-27 22:36:21,883 INFO L125 PetriNetUnfolderBase]: For 185254/185254 co-relation queries the response was YES. [2024-06-27 22:36:21,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31587 conditions, 3674 events. 1951/3674 cut-off events. For 185254/185254 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 24867 event pairs, 453 based on Foata normal form. 2/3439 useless extension candidates. Maximal degree in co-relation 31415. Up to 3044 conditions per place. [2024-06-27 22:36:21,933 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 592 selfloop transitions, 88 changer transitions 0/688 dead transitions. [2024-06-27 22:36:21,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 688 transitions, 13673 flow [2024-06-27 22:36:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:36:21,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:36:21,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-27 22:36:21,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:36:21,942 INFO L175 Difference]: Start difference. First operand has 359 places, 642 transitions, 11821 flow. Second operand 12 states and 192 transitions. [2024-06-27 22:36:21,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 688 transitions, 13673 flow [2024-06-27 22:36:22,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 688 transitions, 13526 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:22,946 INFO L231 Difference]: Finished difference. Result has 364 places, 656 transitions, 12144 flow [2024-06-27 22:36:22,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11684, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12144, PETRI_PLACES=364, PETRI_TRANSITIONS=656} [2024-06-27 22:36:22,947 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 323 predicate places. [2024-06-27 22:36:22,947 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 656 transitions, 12144 flow [2024-06-27 22:36:22,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:22,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:22,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:22,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:36:22,948 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:22,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:22,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1281169872, now seen corresponding path program 6 times [2024-06-27 22:36:22,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:22,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801891667] [2024-06-27 22:36:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:22,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:25,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:25,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801891667] [2024-06-27 22:36:25,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801891667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:25,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:25,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:25,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311144287] [2024-06-27 22:36:25,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:25,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:25,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:25,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:25,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:25,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:25,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 656 transitions, 12144 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:25,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:25,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:25,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:26,682 INFO L124 PetriNetUnfolderBase]: 1948/3670 cut-off events. [2024-06-27 22:36:26,683 INFO L125 PetriNetUnfolderBase]: For 182364/182364 co-relation queries the response was YES. [2024-06-27 22:36:26,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31561 conditions, 3670 events. 1948/3670 cut-off events. For 182364/182364 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 24894 event pairs, 453 based on Foata normal form. 2/3436 useless extension candidates. Maximal degree in co-relation 31388. Up to 3039 conditions per place. [2024-06-27 22:36:26,736 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 588 selfloop transitions, 87 changer transitions 0/683 dead transitions. [2024-06-27 22:36:26,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 683 transitions, 13677 flow [2024-06-27 22:36:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:26,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:26,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 22:36:26,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:36:26,738 INFO L175 Difference]: Start difference. First operand has 364 places, 656 transitions, 12144 flow. Second operand 11 states and 176 transitions. [2024-06-27 22:36:26,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 683 transitions, 13677 flow [2024-06-27 22:36:27,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 683 transitions, 13527 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:27,693 INFO L231 Difference]: Finished difference. Result has 368 places, 656 transitions, 12179 flow [2024-06-27 22:36:27,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11994, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12179, PETRI_PLACES=368, PETRI_TRANSITIONS=656} [2024-06-27 22:36:27,693 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 22:36:27,693 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 656 transitions, 12179 flow [2024-06-27 22:36:27,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:27,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:27,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:27,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:36:27,694 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:27,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:27,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1172046152, now seen corresponding path program 3 times [2024-06-27 22:36:27,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:27,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763858362] [2024-06-27 22:36:27,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:27,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:29,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:29,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763858362] [2024-06-27 22:36:29,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763858362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:29,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:29,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:29,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828212960] [2024-06-27 22:36:29,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:29,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:29,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:29,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:29,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:29,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:29,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 656 transitions, 12179 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:29,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:29,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:29,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:30,811 INFO L124 PetriNetUnfolderBase]: 2088/3894 cut-off events. [2024-06-27 22:36:30,811 INFO L125 PetriNetUnfolderBase]: For 231396/231396 co-relation queries the response was YES. [2024-06-27 22:36:30,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34576 conditions, 3894 events. 2088/3894 cut-off events. For 231396/231396 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 26412 event pairs, 308 based on Foata normal form. 4/3639 useless extension candidates. Maximal degree in co-relation 34401. Up to 1754 conditions per place. [2024-06-27 22:36:30,869 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 416 selfloop transitions, 307 changer transitions 0/731 dead transitions. [2024-06-27 22:36:30,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 731 transitions, 15119 flow [2024-06-27 22:36:30,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 22:36:30,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-06-27 22:36:30,872 INFO L175 Difference]: Start difference. First operand has 368 places, 656 transitions, 12179 flow. Second operand 11 states and 199 transitions. [2024-06-27 22:36:30,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 731 transitions, 15119 flow [2024-06-27 22:36:31,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 731 transitions, 14946 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:32,002 INFO L231 Difference]: Finished difference. Result has 371 places, 679 transitions, 13291 flow [2024-06-27 22:36:32,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12006, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13291, PETRI_PLACES=371, PETRI_TRANSITIONS=679} [2024-06-27 22:36:32,003 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-27 22:36:32,003 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 679 transitions, 13291 flow [2024-06-27 22:36:32,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:32,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:32,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:32,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:36:32,004 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:32,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:32,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2088078788, now seen corresponding path program 4 times [2024-06-27 22:36:32,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:32,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39369197] [2024-06-27 22:36:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:32,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:33,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:33,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39369197] [2024-06-27 22:36:33,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39369197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:33,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:33,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765881681] [2024-06-27 22:36:33,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:33,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:33,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:33,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:33,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 679 transitions, 13291 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:33,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:33,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:33,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:35,336 INFO L124 PetriNetUnfolderBase]: 2101/3911 cut-off events. [2024-06-27 22:36:35,336 INFO L125 PetriNetUnfolderBase]: For 237343/237343 co-relation queries the response was YES. [2024-06-27 22:36:35,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36323 conditions, 3911 events. 2101/3911 cut-off events. For 237343/237343 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 26510 event pairs, 296 based on Foata normal form. 2/3648 useless extension candidates. Maximal degree in co-relation 36146. Up to 1768 conditions per place. [2024-06-27 22:36:35,393 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 402 selfloop transitions, 326 changer transitions 0/736 dead transitions. [2024-06-27 22:36:35,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 736 transitions, 15877 flow [2024-06-27 22:36:35,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:35,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 22:36:35,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:36:35,395 INFO L175 Difference]: Start difference. First operand has 371 places, 679 transitions, 13291 flow. Second operand 11 states and 198 transitions. [2024-06-27 22:36:35,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 736 transitions, 15877 flow [2024-06-27 22:36:36,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 736 transitions, 15562 flow, removed 101 selfloop flow, removed 4 redundant places. [2024-06-27 22:36:36,619 INFO L231 Difference]: Finished difference. Result has 379 places, 684 transitions, 13829 flow [2024-06-27 22:36:36,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13028, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13829, PETRI_PLACES=379, PETRI_TRANSITIONS=684} [2024-06-27 22:36:36,620 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-27 22:36:36,620 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 684 transitions, 13829 flow [2024-06-27 22:36:36,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:36,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:36,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:36,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:36:36,621 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:36,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:36,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1242922886, now seen corresponding path program 7 times [2024-06-27 22:36:36,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:36,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266013320] [2024-06-27 22:36:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:36,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:38,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:38,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266013320] [2024-06-27 22:36:38,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266013320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:38,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:38,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:38,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197819532] [2024-06-27 22:36:38,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:38,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:38,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:38,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:38,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:38,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:38,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 684 transitions, 13829 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:38,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:38,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:38,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:40,034 INFO L124 PetriNetUnfolderBase]: 2118/3953 cut-off events. [2024-06-27 22:36:40,034 INFO L125 PetriNetUnfolderBase]: For 242395/242395 co-relation queries the response was YES. [2024-06-27 22:36:40,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37245 conditions, 3953 events. 2118/3953 cut-off events. For 242395/242395 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 26928 event pairs, 374 based on Foata normal form. 2/3691 useless extension candidates. Maximal degree in co-relation 37065. Up to 3146 conditions per place. [2024-06-27 22:36:40,093 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 546 selfloop transitions, 171 changer transitions 0/725 dead transitions. [2024-06-27 22:36:40,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 725 transitions, 15723 flow [2024-06-27 22:36:40,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:40,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:40,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:36:40,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:36:40,095 INFO L175 Difference]: Start difference. First operand has 379 places, 684 transitions, 13829 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:36:40,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 725 transitions, 15723 flow [2024-06-27 22:36:41,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 725 transitions, 15126 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:41,562 INFO L231 Difference]: Finished difference. Result has 382 places, 689 transitions, 13680 flow [2024-06-27 22:36:41,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13234, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13680, PETRI_PLACES=382, PETRI_TRANSITIONS=689} [2024-06-27 22:36:41,563 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 341 predicate places. [2024-06-27 22:36:41,563 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 689 transitions, 13680 flow [2024-06-27 22:36:41,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:41,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:41,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:41,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:36:41,564 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:41,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:41,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1242927846, now seen corresponding path program 5 times [2024-06-27 22:36:41,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:41,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416814522] [2024-06-27 22:36:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:41,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:43,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:43,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416814522] [2024-06-27 22:36:43,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416814522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:43,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:43,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:43,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840977801] [2024-06-27 22:36:43,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:43,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:43,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:43,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:43,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:43,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:43,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 689 transitions, 13680 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:43,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:43,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:43,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:44,929 INFO L124 PetriNetUnfolderBase]: 2110/3945 cut-off events. [2024-06-27 22:36:44,929 INFO L125 PetriNetUnfolderBase]: For 237926/237926 co-relation queries the response was YES. [2024-06-27 22:36:44,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36325 conditions, 3945 events. 2110/3945 cut-off events. For 237926/237926 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 26965 event pairs, 310 based on Foata normal form. 4/3688 useless extension candidates. Maximal degree in co-relation 36144. Up to 1795 conditions per place. [2024-06-27 22:36:44,982 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 441 selfloop transitions, 293 changer transitions 0/742 dead transitions. [2024-06-27 22:36:44,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 742 transitions, 16339 flow [2024-06-27 22:36:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 22:36:44,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987714987714988 [2024-06-27 22:36:44,984 INFO L175 Difference]: Start difference. First operand has 382 places, 689 transitions, 13680 flow. Second operand 11 states and 203 transitions. [2024-06-27 22:36:44,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 742 transitions, 16339 flow [2024-06-27 22:36:46,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 742 transitions, 15951 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:46,202 INFO L231 Difference]: Finished difference. Result has 386 places, 689 transitions, 13886 flow [2024-06-27 22:36:46,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13292, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13886, PETRI_PLACES=386, PETRI_TRANSITIONS=689} [2024-06-27 22:36:46,203 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-27 22:36:46,203 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 689 transitions, 13886 flow [2024-06-27 22:36:46,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:46,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:46,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:46,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:36:46,204 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:46,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:46,204 INFO L85 PathProgramCache]: Analyzing trace with hash 390307432, now seen corresponding path program 8 times [2024-06-27 22:36:46,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:46,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324782814] [2024-06-27 22:36:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:46,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:48,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:48,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324782814] [2024-06-27 22:36:48,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324782814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:48,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:48,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:48,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041464626] [2024-06-27 22:36:48,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:48,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:48,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:48,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:48,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:48,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:48,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 689 transitions, 13886 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:48,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:48,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:48,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:50,205 INFO L124 PetriNetUnfolderBase]: 2293/4385 cut-off events. [2024-06-27 22:36:50,206 INFO L125 PetriNetUnfolderBase]: For 248161/248161 co-relation queries the response was YES. [2024-06-27 22:36:50,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38907 conditions, 4385 events. 2293/4385 cut-off events. For 248161/248161 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 31383 event pairs, 566 based on Foata normal form. 2/4092 useless extension candidates. Maximal degree in co-relation 38724. Up to 3503 conditions per place. [2024-06-27 22:36:50,274 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 673 selfloop transitions, 70 changer transitions 0/751 dead transitions. [2024-06-27 22:36:50,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 751 transitions, 16170 flow [2024-06-27 22:36:50,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:36:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:36:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 201 transitions. [2024-06-27 22:36:50,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4178794178794179 [2024-06-27 22:36:50,276 INFO L175 Difference]: Start difference. First operand has 386 places, 689 transitions, 13886 flow. Second operand 13 states and 201 transitions. [2024-06-27 22:36:50,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 751 transitions, 16170 flow [2024-06-27 22:36:51,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 751 transitions, 15468 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 22:36:51,646 INFO L231 Difference]: Finished difference. Result has 392 places, 713 transitions, 13762 flow [2024-06-27 22:36:51,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13195, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13762, PETRI_PLACES=392, PETRI_TRANSITIONS=713} [2024-06-27 22:36:51,647 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-27 22:36:51,647 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 713 transitions, 13762 flow [2024-06-27 22:36:51,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:51,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:51,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:51,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:36:51,648 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:51,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash 393049072, now seen corresponding path program 9 times [2024-06-27 22:36:51,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:51,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120034972] [2024-06-27 22:36:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:51,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:53,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:53,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120034972] [2024-06-27 22:36:53,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120034972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:53,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:53,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:53,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637777875] [2024-06-27 22:36:53,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:53,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:53,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:53,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:53,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:53,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:53,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 713 transitions, 13762 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:53,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:53,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:53,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:55,173 INFO L124 PetriNetUnfolderBase]: 2354/4563 cut-off events. [2024-06-27 22:36:55,174 INFO L125 PetriNetUnfolderBase]: For 250086/250086 co-relation queries the response was YES. [2024-06-27 22:36:55,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39501 conditions, 4563 events. 2354/4563 cut-off events. For 250086/250086 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 33365 event pairs, 628 based on Foata normal form. 2/4251 useless extension candidates. Maximal degree in co-relation 39314. Up to 3790 conditions per place. [2024-06-27 22:36:55,245 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 681 selfloop transitions, 67 changer transitions 0/756 dead transitions. [2024-06-27 22:36:55,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 756 transitions, 15777 flow [2024-06-27 22:36:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:36:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:36:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-27 22:36:55,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 22:36:55,246 INFO L175 Difference]: Start difference. First operand has 392 places, 713 transitions, 13762 flow. Second operand 12 states and 186 transitions. [2024-06-27 22:36:55,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 756 transitions, 15777 flow [2024-06-27 22:36:56,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 756 transitions, 15659 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:56,759 INFO L231 Difference]: Finished difference. Result has 397 places, 725 transitions, 14059 flow [2024-06-27 22:36:56,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13658, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14059, PETRI_PLACES=397, PETRI_TRANSITIONS=725} [2024-06-27 22:36:56,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 356 predicate places. [2024-06-27 22:36:56,760 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 725 transitions, 14059 flow [2024-06-27 22:36:56,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:56,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:56,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:56,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:36:56,760 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:56,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:56,760 INFO L85 PathProgramCache]: Analyzing trace with hash 393164392, now seen corresponding path program 10 times [2024-06-27 22:36:56,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:56,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811940998] [2024-06-27 22:36:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:56,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:58,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:58,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811940998] [2024-06-27 22:36:58,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811940998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:58,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:58,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:58,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856344885] [2024-06-27 22:36:58,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:58,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:58,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:58,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:58,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:59,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:59,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 725 transitions, 14059 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:59,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:59,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:59,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:00,793 INFO L124 PetriNetUnfolderBase]: 2351/4556 cut-off events. [2024-06-27 22:37:00,793 INFO L125 PetriNetUnfolderBase]: For 246515/246515 co-relation queries the response was YES. [2024-06-27 22:37:00,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39423 conditions, 4556 events. 2351/4556 cut-off events. For 246515/246515 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 33276 event pairs, 627 based on Foata normal form. 2/4241 useless extension candidates. Maximal degree in co-relation 39235. Up to 3785 conditions per place. [2024-06-27 22:37:00,867 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 679 selfloop transitions, 64 changer transitions 0/751 dead transitions. [2024-06-27 22:37:00,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 751 transitions, 15751 flow [2024-06-27 22:37:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:00,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:37:00,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 22:37:00,868 INFO L175 Difference]: Start difference. First operand has 397 places, 725 transitions, 14059 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:37:00,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 751 transitions, 15751 flow [2024-06-27 22:37:02,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 751 transitions, 15615 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:02,443 INFO L231 Difference]: Finished difference. Result has 398 places, 725 transitions, 14063 flow [2024-06-27 22:37:02,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13923, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14063, PETRI_PLACES=398, PETRI_TRANSITIONS=725} [2024-06-27 22:37:02,444 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-27 22:37:02,444 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 725 transitions, 14063 flow [2024-06-27 22:37:02,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:02,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:02,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:02,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:37:02,444 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:02,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:02,446 INFO L85 PathProgramCache]: Analyzing trace with hash 393169352, now seen corresponding path program 6 times [2024-06-27 22:37:02,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:02,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055636258] [2024-06-27 22:37:02,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:02,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:04,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:04,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055636258] [2024-06-27 22:37:04,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055636258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:04,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:04,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:04,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415709347] [2024-06-27 22:37:04,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:04,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:04,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:04,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:04,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:04,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:04,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 725 transitions, 14063 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:04,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:04,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:04,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:06,467 INFO L124 PetriNetUnfolderBase]: 2431/4677 cut-off events. [2024-06-27 22:37:06,467 INFO L125 PetriNetUnfolderBase]: For 267718/267718 co-relation queries the response was YES. [2024-06-27 22:37:06,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40781 conditions, 4677 events. 2431/4677 cut-off events. For 267718/267718 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 34073 event pairs, 630 based on Foata normal form. 4/4334 useless extension candidates. Maximal degree in co-relation 40592. Up to 3885 conditions per place. [2024-06-27 22:37:06,544 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 680 selfloop transitions, 84 changer transitions 0/772 dead transitions. [2024-06-27 22:37:06,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 772 transitions, 16357 flow [2024-06-27 22:37:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:06,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:06,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:37:06,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:37:06,545 INFO L175 Difference]: Start difference. First operand has 398 places, 725 transitions, 14063 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:37:06,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 772 transitions, 16357 flow [2024-06-27 22:37:08,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 772 transitions, 16244 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:37:08,242 INFO L231 Difference]: Finished difference. Result has 402 places, 744 transitions, 14540 flow [2024-06-27 22:37:08,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13950, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14540, PETRI_PLACES=402, PETRI_TRANSITIONS=744} [2024-06-27 22:37:08,243 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-27 22:37:08,243 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 744 transitions, 14540 flow [2024-06-27 22:37:08,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:08,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:08,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:08,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:37:08,244 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:08,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash 508640012, now seen corresponding path program 7 times [2024-06-27 22:37:08,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:08,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551552040] [2024-06-27 22:37:08,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:08,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:09,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:09,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551552040] [2024-06-27 22:37:09,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551552040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:09,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:09,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:09,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819423444] [2024-06-27 22:37:09,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:09,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:09,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:09,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:09,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:09,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:09,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 744 transitions, 14540 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:09,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:09,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:09,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:11,639 INFO L124 PetriNetUnfolderBase]: 2595/4936 cut-off events. [2024-06-27 22:37:11,639 INFO L125 PetriNetUnfolderBase]: For 314869/314869 co-relation queries the response was YES. [2024-06-27 22:37:11,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44741 conditions, 4936 events. 2595/4936 cut-off events. For 314869/314869 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 36007 event pairs, 610 based on Foata normal form. 2/4554 useless extension candidates. Maximal degree in co-relation 44550. Up to 3514 conditions per place. [2024-06-27 22:37:11,722 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 589 selfloop transitions, 239 changer transitions 0/836 dead transitions. [2024-06-27 22:37:11,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 836 transitions, 18172 flow [2024-06-27 22:37:11,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 22:37:11,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-27 22:37:11,723 INFO L175 Difference]: Start difference. First operand has 402 places, 744 transitions, 14540 flow. Second operand 11 states and 194 transitions. [2024-06-27 22:37:11,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 836 transitions, 18172 flow [2024-06-27 22:37:13,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 836 transitions, 18049 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:13,757 INFO L231 Difference]: Finished difference. Result has 410 places, 779 transitions, 15920 flow [2024-06-27 22:37:13,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14417, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15920, PETRI_PLACES=410, PETRI_TRANSITIONS=779} [2024-06-27 22:37:13,758 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-27 22:37:13,758 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 779 transitions, 15920 flow [2024-06-27 22:37:13,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:13,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:13,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:13,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:37:13,759 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:13,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:13,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1353604954, now seen corresponding path program 8 times [2024-06-27 22:37:13,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:13,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571290995] [2024-06-27 22:37:13,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:13,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:15,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:15,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571290995] [2024-06-27 22:37:15,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571290995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:15,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:15,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:15,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577039048] [2024-06-27 22:37:15,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:15,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:15,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:15,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:15,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:15,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:15,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 779 transitions, 15920 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:15,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:15,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:15,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:17,832 INFO L124 PetriNetUnfolderBase]: 2649/5026 cut-off events. [2024-06-27 22:37:17,832 INFO L125 PetriNetUnfolderBase]: For 347889/347889 co-relation queries the response was YES. [2024-06-27 22:37:17,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47365 conditions, 5026 events. 2649/5026 cut-off events. For 347889/347889 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 36666 event pairs, 633 based on Foata normal form. 4/4645 useless extension candidates. Maximal degree in co-relation 47168. Up to 3559 conditions per place. [2024-06-27 22:37:17,902 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 607 selfloop transitions, 231 changer transitions 0/846 dead transitions. [2024-06-27 22:37:17,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 846 transitions, 19159 flow [2024-06-27 22:37:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:37:17,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 22:37:17,903 INFO L175 Difference]: Start difference. First operand has 410 places, 779 transitions, 15920 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:37:17,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 846 transitions, 19159 flow [2024-06-27 22:37:19,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 846 transitions, 18787 flow, removed 128 selfloop flow, removed 5 redundant places. [2024-06-27 22:37:19,886 INFO L231 Difference]: Finished difference. Result has 415 places, 788 transitions, 16314 flow [2024-06-27 22:37:19,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15642, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16314, PETRI_PLACES=415, PETRI_TRANSITIONS=788} [2024-06-27 22:37:19,887 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 374 predicate places. [2024-06-27 22:37:19,887 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 788 transitions, 16314 flow [2024-06-27 22:37:19,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:19,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:19,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:19,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:37:19,887 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:19,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash 508460522, now seen corresponding path program 9 times [2024-06-27 22:37:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564255606] [2024-06-27 22:37:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:19,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:21,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:21,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564255606] [2024-06-27 22:37:21,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564255606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:21,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:21,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:21,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236605065] [2024-06-27 22:37:21,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:21,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:21,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:21,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:21,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:22,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:22,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 788 transitions, 16314 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:22,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:22,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:22,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:23,830 INFO L124 PetriNetUnfolderBase]: 2641/5012 cut-off events. [2024-06-27 22:37:23,830 INFO L125 PetriNetUnfolderBase]: For 332849/332849 co-relation queries the response was YES. [2024-06-27 22:37:23,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46873 conditions, 5012 events. 2641/5012 cut-off events. For 332849/332849 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 36539 event pairs, 611 based on Foata normal form. 4/4628 useless extension candidates. Maximal degree in co-relation 46675. Up to 3555 conditions per place. [2024-06-27 22:37:23,918 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 624 selfloop transitions, 216 changer transitions 0/848 dead transitions. [2024-06-27 22:37:23,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 848 transitions, 19461 flow [2024-06-27 22:37:23,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:23,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 22:37:23,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:37:23,920 INFO L175 Difference]: Start difference. First operand has 415 places, 788 transitions, 16314 flow. Second operand 10 states and 190 transitions. [2024-06-27 22:37:23,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 848 transitions, 19461 flow [2024-06-27 22:37:25,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 848 transitions, 19015 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:25,848 INFO L231 Difference]: Finished difference. Result has 419 places, 788 transitions, 16314 flow [2024-06-27 22:37:25,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15868, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16314, PETRI_PLACES=419, PETRI_TRANSITIONS=788} [2024-06-27 22:37:25,849 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-27 22:37:25,849 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 788 transitions, 16314 flow [2024-06-27 22:37:25,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:25,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:25,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:25,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:37:25,850 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:25,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:25,850 INFO L85 PathProgramCache]: Analyzing trace with hash 508455562, now seen corresponding path program 11 times [2024-06-27 22:37:25,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:25,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460193882] [2024-06-27 22:37:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:25,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:27,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460193882] [2024-06-27 22:37:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460193882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:27,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:27,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:27,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848936706] [2024-06-27 22:37:27,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:28,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:28,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 788 transitions, 16314 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:28,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:28,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:28,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:29,795 INFO L124 PetriNetUnfolderBase]: 2669/5086 cut-off events. [2024-06-27 22:37:29,795 INFO L125 PetriNetUnfolderBase]: For 330824/330824 co-relation queries the response was YES. [2024-06-27 22:37:29,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47055 conditions, 5086 events. 2669/5086 cut-off events. For 330824/330824 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 37365 event pairs, 684 based on Foata normal form. 2/4701 useless extension candidates. Maximal degree in co-relation 46856. Up to 4233 conditions per place. [2024-06-27 22:37:29,881 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 712 selfloop transitions, 107 changer transitions 0/827 dead transitions. [2024-06-27 22:37:29,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 827 transitions, 18421 flow [2024-06-27 22:37:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:37:29,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:37:29,883 INFO L175 Difference]: Start difference. First operand has 419 places, 788 transitions, 16314 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:37:29,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 827 transitions, 18421 flow [2024-06-27 22:37:32,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 827 transitions, 17856 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:32,095 INFO L231 Difference]: Finished difference. Result has 421 places, 795 transitions, 16112 flow [2024-06-27 22:37:32,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15753, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16112, PETRI_PLACES=421, PETRI_TRANSITIONS=795} [2024-06-27 22:37:32,096 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-27 22:37:32,096 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 795 transitions, 16112 flow [2024-06-27 22:37:32,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:32,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:32,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:32,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:37:32,096 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:32,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1180833140, now seen corresponding path program 10 times [2024-06-27 22:37:32,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:32,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481118671] [2024-06-27 22:37:32,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:32,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:34,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:34,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481118671] [2024-06-27 22:37:34,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481118671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:34,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:34,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:37:34,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771290425] [2024-06-27 22:37:34,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:34,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:37:34,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:34,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:37:34,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:37:34,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:34,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 795 transitions, 16112 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:34,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:34,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:34,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:36,489 INFO L124 PetriNetUnfolderBase]: 2761/5230 cut-off events. [2024-06-27 22:37:36,490 INFO L125 PetriNetUnfolderBase]: For 367100/367100 co-relation queries the response was YES. [2024-06-27 22:37:36,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49159 conditions, 5230 events. 2761/5230 cut-off events. For 367100/367100 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 38425 event pairs, 631 based on Foata normal form. 2/4825 useless extension candidates. Maximal degree in co-relation 48958. Up to 4138 conditions per place. [2024-06-27 22:37:36,579 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 731 selfloop transitions, 117 changer transitions 0/856 dead transitions. [2024-06-27 22:37:36,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 856 transitions, 19392 flow [2024-06-27 22:37:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:36,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:37:36,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 22:37:36,581 INFO L175 Difference]: Start difference. First operand has 421 places, 795 transitions, 16112 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:37:36,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 856 transitions, 19392 flow [2024-06-27 22:37:38,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 856 transitions, 19185 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:38,989 INFO L231 Difference]: Finished difference. Result has 428 places, 812 transitions, 16758 flow [2024-06-27 22:37:38,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15905, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16758, PETRI_PLACES=428, PETRI_TRANSITIONS=812} [2024-06-27 22:37:38,993 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-27 22:37:38,994 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 812 transitions, 16758 flow [2024-06-27 22:37:38,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:38,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:38,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:38,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:37:38,994 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:38,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:38,995 INFO L85 PathProgramCache]: Analyzing trace with hash 680765896, now seen corresponding path program 11 times [2024-06-27 22:37:38,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:38,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125840613] [2024-06-27 22:37:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:38,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:40,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:40,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125840613] [2024-06-27 22:37:40,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125840613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:40,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:40,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:40,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830215490] [2024-06-27 22:37:40,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:40,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:40,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:40,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:40,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:40,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:40,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 812 transitions, 16758 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:40,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:40,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:40,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:42,542 INFO L124 PetriNetUnfolderBase]: 2793/5284 cut-off events. [2024-06-27 22:37:42,542 INFO L125 PetriNetUnfolderBase]: For 390362/390362 co-relation queries the response was YES. [2024-06-27 22:37:42,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50358 conditions, 5284 events. 2793/5284 cut-off events. For 390362/390362 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 38858 event pairs, 658 based on Foata normal form. 4/4880 useless extension candidates. Maximal degree in co-relation 50153. Up to 4411 conditions per place. [2024-06-27 22:37:42,631 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 762 selfloop transitions, 73 changer transitions 0/843 dead transitions. [2024-06-27 22:37:42,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 843 transitions, 18820 flow [2024-06-27 22:37:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:42,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:37:42,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 22:37:42,632 INFO L175 Difference]: Start difference. First operand has 428 places, 812 transitions, 16758 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:37:42,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 843 transitions, 18820 flow [2024-06-27 22:37:45,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 843 transitions, 18546 flow, removed 102 selfloop flow, removed 5 redundant places. [2024-06-27 22:37:45,167 INFO L231 Difference]: Finished difference. Result has 434 places, 816 transitions, 16788 flow [2024-06-27 22:37:45,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16500, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=739, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16788, PETRI_PLACES=434, PETRI_TRANSITIONS=816} [2024-06-27 22:37:45,168 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 393 predicate places. [2024-06-27 22:37:45,169 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 816 transitions, 16788 flow [2024-06-27 22:37:45,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:45,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:45,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:45,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:37:45,169 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:45,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:45,177 INFO L85 PathProgramCache]: Analyzing trace with hash 680528746, now seen corresponding path program 12 times [2024-06-27 22:37:45,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:45,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297662503] [2024-06-27 22:37:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:45,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:46,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:46,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297662503] [2024-06-27 22:37:46,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297662503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:46,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:46,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:37:46,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728177129] [2024-06-27 22:37:46,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:46,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:37:46,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:46,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:37:46,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:37:46,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:46,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 816 transitions, 16788 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:46,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:46,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:46,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:48,838 INFO L124 PetriNetUnfolderBase]: 2825/5336 cut-off events. [2024-06-27 22:37:48,839 INFO L125 PetriNetUnfolderBase]: For 396326/396326 co-relation queries the response was YES. [2024-06-27 22:37:48,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50720 conditions, 5336 events. 2825/5336 cut-off events. For 396326/396326 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 39219 event pairs, 648 based on Foata normal form. 4/4928 useless extension candidates. Maximal degree in co-relation 50513. Up to 4349 conditions per place. [2024-06-27 22:37:48,931 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 749 selfloop transitions, 96 changer transitions 0/853 dead transitions. [2024-06-27 22:37:48,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 853 transitions, 19147 flow [2024-06-27 22:37:48,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:37:48,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 22:37:48,933 INFO L175 Difference]: Start difference. First operand has 434 places, 816 transitions, 16788 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:37:48,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 853 transitions, 19147 flow [2024-06-27 22:37:51,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 853 transitions, 18953 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 22:37:51,463 INFO L231 Difference]: Finished difference. Result has 438 places, 821 transitions, 16971 flow [2024-06-27 22:37:51,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16594, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=724, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16971, PETRI_PLACES=438, PETRI_TRANSITIONS=821} [2024-06-27 22:37:51,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 397 predicate places. [2024-06-27 22:37:51,466 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 821 transitions, 16971 flow [2024-06-27 22:37:51,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:51,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:51,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:51,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:37:51,466 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:51,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2049454736, now seen corresponding path program 13 times [2024-06-27 22:37:51,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:51,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905329212] [2024-06-27 22:37:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:51,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:53,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:53,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905329212] [2024-06-27 22:37:53,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905329212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:53,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:53,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:53,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379012397] [2024-06-27 22:37:53,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:53,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:53,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:53,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:53,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:53,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:53,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 821 transitions, 16971 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:53,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:53,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:53,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:56,181 INFO L124 PetriNetUnfolderBase]: 2879/5422 cut-off events. [2024-06-27 22:37:56,182 INFO L125 PetriNetUnfolderBase]: For 413499/413499 co-relation queries the response was YES. [2024-06-27 22:37:56,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51929 conditions, 5422 events. 2879/5422 cut-off events. For 413499/413499 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 39902 event pairs, 658 based on Foata normal form. 4/5007 useless extension candidates. Maximal degree in co-relation 51721. Up to 4231 conditions per place. [2024-06-27 22:37:56,264 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 741 selfloop transitions, 128 changer transitions 0/877 dead transitions. [2024-06-27 22:37:56,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 877 transitions, 20073 flow [2024-06-27 22:37:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:56,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 22:37:56,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-27 22:37:56,265 INFO L175 Difference]: Start difference. First operand has 438 places, 821 transitions, 16971 flow. Second operand 11 states and 194 transitions. [2024-06-27 22:37:56,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 877 transitions, 20073 flow [2024-06-27 22:37:58,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 877 transitions, 19754 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:58,853 INFO L231 Difference]: Finished difference. Result has 440 places, 830 transitions, 17138 flow [2024-06-27 22:37:58,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16652, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=821, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17138, PETRI_PLACES=440, PETRI_TRANSITIONS=830} [2024-06-27 22:37:58,853 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 399 predicate places. [2024-06-27 22:37:58,854 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 830 transitions, 17138 flow [2024-06-27 22:37:58,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:58,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:58,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:58,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:37:58,854 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:58,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:58,855 INFO L85 PathProgramCache]: Analyzing trace with hash 674099656, now seen corresponding path program 14 times [2024-06-27 22:37:58,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:58,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205295625] [2024-06-27 22:37:58,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:58,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:01,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205295625] [2024-06-27 22:38:01,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205295625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:01,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:01,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:01,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275578585] [2024-06-27 22:38:01,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:01,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:01,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:01,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:01,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:01,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:01,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 830 transitions, 17138 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:01,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:01,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:01,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:03,371 INFO L124 PetriNetUnfolderBase]: 2871/5408 cut-off events. [2024-06-27 22:38:03,372 INFO L125 PetriNetUnfolderBase]: For 399872/399872 co-relation queries the response was YES. [2024-06-27 22:38:03,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51289 conditions, 5408 events. 2871/5408 cut-off events. For 399872/399872 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 39779 event pairs, 640 based on Foata normal form. 4/4990 useless extension candidates. Maximal degree in co-relation 51080. Up to 4227 conditions per place. [2024-06-27 22:38:03,468 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 725 selfloop transitions, 137 changer transitions 0/870 dead transitions. [2024-06-27 22:38:03,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 870 transitions, 19694 flow [2024-06-27 22:38:03,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:03,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 22:38:03,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 22:38:03,470 INFO L175 Difference]: Start difference. First operand has 440 places, 830 transitions, 17138 flow. Second operand 11 states and 191 transitions. [2024-06-27 22:38:03,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 870 transitions, 19694 flow [2024-06-27 22:38:06,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 870 transitions, 19402 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 22:38:06,122 INFO L231 Difference]: Finished difference. Result has 444 places, 830 transitions, 17131 flow [2024-06-27 22:38:06,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16846, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17131, PETRI_PLACES=444, PETRI_TRANSITIONS=830} [2024-06-27 22:38:06,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-27 22:38:06,122 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 830 transitions, 17131 flow [2024-06-27 22:38:06,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:06,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:06,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:06,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:38:06,123 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:06,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:06,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1406803728, now seen corresponding path program 15 times [2024-06-27 22:38:06,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:06,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130762446] [2024-06-27 22:38:06,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:06,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:07,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:07,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130762446] [2024-06-27 22:38:07,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130762446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:07,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:07,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:07,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537752799] [2024-06-27 22:38:07,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:07,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:07,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:07,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:07,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:07,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:07,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 830 transitions, 17131 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:07,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:07,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:07,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:10,062 INFO L124 PetriNetUnfolderBase]: 2867/5404 cut-off events. [2024-06-27 22:38:10,062 INFO L125 PetriNetUnfolderBase]: For 387556/387556 co-relation queries the response was YES. [2024-06-27 22:38:10,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50890 conditions, 5404 events. 2867/5404 cut-off events. For 387556/387556 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 39776 event pairs, 655 based on Foata normal form. 2/4987 useless extension candidates. Maximal degree in co-relation 50680. Up to 4416 conditions per place. [2024-06-27 22:38:10,158 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 763 selfloop transitions, 96 changer transitions 0/867 dead transitions. [2024-06-27 22:38:10,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 867 transitions, 19494 flow [2024-06-27 22:38:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:10,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:38:10,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:38:10,160 INFO L175 Difference]: Start difference. First operand has 444 places, 830 transitions, 17131 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:38:10,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 867 transitions, 19494 flow [2024-06-27 22:38:12,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 867 transitions, 19173 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 22:38:12,790 INFO L231 Difference]: Finished difference. Result has 445 places, 833 transitions, 17117 flow [2024-06-27 22:38:12,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16814, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=736, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17117, PETRI_PLACES=445, PETRI_TRANSITIONS=833} [2024-06-27 22:38:12,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-27 22:38:12,791 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 833 transitions, 17117 flow [2024-06-27 22:38:12,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:12,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:12,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:12,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:38:12,791 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:12,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:12,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1407043296, now seen corresponding path program 1 times [2024-06-27 22:38:12,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:12,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625875144] [2024-06-27 22:38:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:12,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:14,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:14,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:14,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625875144] [2024-06-27 22:38:14,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625875144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:14,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:14,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:38:14,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879429760] [2024-06-27 22:38:14,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:14,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:38:14,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:14,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:38:14,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:38:14,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:14,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 833 transitions, 17117 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:14,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:14,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:14,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:16,188 INFO L124 PetriNetUnfolderBase]: 2880/5424 cut-off events. [2024-06-27 22:38:16,189 INFO L125 PetriNetUnfolderBase]: For 394009/394009 co-relation queries the response was YES. [2024-06-27 22:38:16,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50997 conditions, 5424 events. 2880/5424 cut-off events. For 394009/394009 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 39937 event pairs, 664 based on Foata normal form. 2/5007 useless extension candidates. Maximal degree in co-relation 50786. Up to 4582 conditions per place. [2024-06-27 22:38:16,279 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 789 selfloop transitions, 61 changer transitions 0/858 dead transitions. [2024-06-27 22:38:16,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 858 transitions, 19021 flow [2024-06-27 22:38:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:38:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:38:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 22:38:16,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 22:38:16,281 INFO L175 Difference]: Start difference. First operand has 445 places, 833 transitions, 17117 flow. Second operand 9 states and 155 transitions. [2024-06-27 22:38:16,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 858 transitions, 19021 flow [2024-06-27 22:38:19,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 858 transitions, 18795 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:19,057 INFO L231 Difference]: Finished difference. Result has 446 places, 835 transitions, 17045 flow [2024-06-27 22:38:19,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16891, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=772, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17045, PETRI_PLACES=446, PETRI_TRANSITIONS=835} [2024-06-27 22:38:19,057 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 405 predicate places. [2024-06-27 22:38:19,058 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 835 transitions, 17045 flow [2024-06-27 22:38:19,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:19,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:19,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:19,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:38:19,058 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:19,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:19,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1400363168, now seen corresponding path program 12 times [2024-06-27 22:38:19,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:19,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512650373] [2024-06-27 22:38:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:19,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:21,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:21,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512650373] [2024-06-27 22:38:21,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512650373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:21,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:21,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:21,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418213972] [2024-06-27 22:38:21,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:21,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:21,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:21,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:21,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:21,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:21,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 835 transitions, 17045 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:21,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:21,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:21,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:23,227 INFO L124 PetriNetUnfolderBase]: 2897/5467 cut-off events. [2024-06-27 22:38:23,228 INFO L125 PetriNetUnfolderBase]: For 399484/399484 co-relation queries the response was YES. [2024-06-27 22:38:23,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51140 conditions, 5467 events. 2897/5467 cut-off events. For 399484/399484 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 40338 event pairs, 710 based on Foata normal form. 2/5046 useless extension candidates. Maximal degree in co-relation 50929. Up to 4677 conditions per place. [2024-06-27 22:38:23,325 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 812 selfloop transitions, 44 changer transitions 0/864 dead transitions. [2024-06-27 22:38:23,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 864 transitions, 19069 flow [2024-06-27 22:38:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:23,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 22:38:23,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:38:23,327 INFO L175 Difference]: Start difference. First operand has 446 places, 835 transitions, 17045 flow. Second operand 10 states and 160 transitions. [2024-06-27 22:38:23,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 864 transitions, 19069 flow [2024-06-27 22:38:26,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 864 transitions, 18933 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 22:38:26,110 INFO L231 Difference]: Finished difference. Result has 450 places, 840 transitions, 17133 flow [2024-06-27 22:38:26,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16909, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=793, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17133, PETRI_PLACES=450, PETRI_TRANSITIONS=840} [2024-06-27 22:38:26,110 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 409 predicate places. [2024-06-27 22:38:26,111 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 840 transitions, 17133 flow [2024-06-27 22:38:26,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:26,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:26,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:26,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:38:26,111 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:26,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:26,112 INFO L85 PathProgramCache]: Analyzing trace with hash 763016352, now seen corresponding path program 13 times [2024-06-27 22:38:26,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:26,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882544350] [2024-06-27 22:38:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:26,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:28,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:28,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882544350] [2024-06-27 22:38:28,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882544350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:28,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:28,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:28,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229844161] [2024-06-27 22:38:28,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:28,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:28,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:28,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:28,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:28,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:28,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 840 transitions, 17133 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:28,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:28,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:28,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:30,357 INFO L124 PetriNetUnfolderBase]: 3065/5873 cut-off events. [2024-06-27 22:38:30,357 INFO L125 PetriNetUnfolderBase]: For 409958/409958 co-relation queries the response was YES. [2024-06-27 22:38:30,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53200 conditions, 5873 events. 3065/5873 cut-off events. For 409958/409958 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 44882 event pairs, 851 based on Foata normal form. 2/5419 useless extension candidates. Maximal degree in co-relation 52987. Up to 4708 conditions per place. [2024-06-27 22:38:30,461 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 809 selfloop transitions, 72 changer transitions 0/889 dead transitions. [2024-06-27 22:38:30,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 889 transitions, 19579 flow [2024-06-27 22:38:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:38:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:38:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-27 22:38:30,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 22:38:30,462 INFO L175 Difference]: Start difference. First operand has 450 places, 840 transitions, 17133 flow. Second operand 12 states and 186 transitions. [2024-06-27 22:38:30,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 889 transitions, 19579 flow [2024-06-27 22:38:33,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 889 transitions, 19454 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 22:38:33,404 INFO L231 Difference]: Finished difference. Result has 457 places, 855 transitions, 17442 flow [2024-06-27 22:38:33,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17008, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=840, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=770, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17442, PETRI_PLACES=457, PETRI_TRANSITIONS=855} [2024-06-27 22:38:33,405 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 416 predicate places. [2024-06-27 22:38:33,405 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 855 transitions, 17442 flow [2024-06-27 22:38:33,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:33,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:33,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:33,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:38:33,405 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:33,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 765758116, now seen corresponding path program 1 times [2024-06-27 22:38:33,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:33,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122352808] [2024-06-27 22:38:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:33,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:35,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:35,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122352808] [2024-06-27 22:38:35,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122352808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:35,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:35,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:35,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401572886] [2024-06-27 22:38:35,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:35,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:35,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 855 transitions, 17442 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:35,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:35,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:35,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:37,747 INFO L124 PetriNetUnfolderBase]: 3095/5960 cut-off events. [2024-06-27 22:38:37,747 INFO L125 PetriNetUnfolderBase]: For 412833/412833 co-relation queries the response was YES. [2024-06-27 22:38:37,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54284 conditions, 5960 events. 3095/5960 cut-off events. For 412833/412833 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 45842 event pairs, 911 based on Foata normal form. 1/5487 useless extension candidates. Maximal degree in co-relation 54068. Up to 5024 conditions per place. [2024-06-27 22:38:37,862 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 820 selfloop transitions, 75 changer transitions 0/903 dead transitions. [2024-06-27 22:38:37,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 903 transitions, 20153 flow [2024-06-27 22:38:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:38:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:38:37,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-27 22:38:37,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 22:38:37,863 INFO L175 Difference]: Start difference. First operand has 457 places, 855 transitions, 17442 flow. Second operand 12 states and 180 transitions. [2024-06-27 22:38:37,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 903 transitions, 20153 flow [2024-06-27 22:38:41,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 903 transitions, 19982 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:41,195 INFO L231 Difference]: Finished difference. Result has 461 places, 877 transitions, 17936 flow [2024-06-27 22:38:41,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17286, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=793, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17936, PETRI_PLACES=461, PETRI_TRANSITIONS=877} [2024-06-27 22:38:41,195 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-27 22:38:41,195 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 877 transitions, 17936 flow [2024-06-27 22:38:41,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:41,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:41,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:41,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:38:41,196 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:41,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:41,196 INFO L85 PathProgramCache]: Analyzing trace with hash 763076802, now seen corresponding path program 14 times [2024-06-27 22:38:41,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:41,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765938539] [2024-06-27 22:38:41,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:41,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:42,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:42,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765938539] [2024-06-27 22:38:42,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765938539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:42,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:42,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216919989] [2024-06-27 22:38:42,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:42,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:42,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:42,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:43,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:43,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 877 transitions, 17936 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:43,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:43,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:43,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:45,274 INFO L124 PetriNetUnfolderBase]: 3144/6087 cut-off events. [2024-06-27 22:38:45,274 INFO L125 PetriNetUnfolderBase]: For 424776/424776 co-relation queries the response was YES. [2024-06-27 22:38:45,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54838 conditions, 6087 events. 3144/6087 cut-off events. For 424776/424776 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 47295 event pairs, 924 based on Foata normal form. 2/5607 useless extension candidates. Maximal degree in co-relation 54621. Up to 5067 conditions per place. [2024-06-27 22:38:45,385 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 835 selfloop transitions, 65 changer transitions 0/908 dead transitions. [2024-06-27 22:38:45,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 908 transitions, 20033 flow [2024-06-27 22:38:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:38:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:38:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-27 22:38:45,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 22:38:45,387 INFO L175 Difference]: Start difference. First operand has 461 places, 877 transitions, 17936 flow. Second operand 12 states and 180 transitions. [2024-06-27 22:38:45,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 908 transitions, 20033 flow [2024-06-27 22:38:48,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 908 transitions, 19962 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 22:38:48,602 INFO L231 Difference]: Finished difference. Result has 467 places, 881 transitions, 18083 flow [2024-06-27 22:38:48,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17865, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=18083, PETRI_PLACES=467, PETRI_TRANSITIONS=881} [2024-06-27 22:38:48,603 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-27 22:38:48,603 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 881 transitions, 18083 flow [2024-06-27 22:38:48,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:48,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:48,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:48,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:38:48,603 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:48,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:48,604 INFO L85 PathProgramCache]: Analyzing trace with hash 765878086, now seen corresponding path program 2 times [2024-06-27 22:38:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:48,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389372217] [2024-06-27 22:38:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:48,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:50,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:50,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389372217] [2024-06-27 22:38:50,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389372217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:50,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:50,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:50,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911165962] [2024-06-27 22:38:50,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:50,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:50,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:50,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:50,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:50,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:50,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 881 transitions, 18083 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:50,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:50,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:50,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:53,035 INFO L124 PetriNetUnfolderBase]: 3158/6108 cut-off events. [2024-06-27 22:38:53,035 INFO L125 PetriNetUnfolderBase]: For 427304/427304 co-relation queries the response was YES. [2024-06-27 22:38:53,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55410 conditions, 6108 events. 3158/6108 cut-off events. For 427304/427304 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 47394 event pairs, 925 based on Foata normal form. 1/5617 useless extension candidates. Maximal degree in co-relation 55191. Up to 5134 conditions per place. [2024-06-27 22:38:53,132 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 813 selfloop transitions, 89 changer transitions 0/910 dead transitions. [2024-06-27 22:38:53,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 910 transitions, 20475 flow [2024-06-27 22:38:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:53,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 22:38:53,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-27 22:38:53,133 INFO L175 Difference]: Start difference. First operand has 467 places, 881 transitions, 18083 flow. Second operand 10 states and 154 transitions. [2024-06-27 22:38:53,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 910 transitions, 20475 flow [2024-06-27 22:38:55,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 910 transitions, 20322 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 22:38:55,948 INFO L231 Difference]: Finished difference. Result has 466 places, 891 transitions, 18343 flow [2024-06-27 22:38:55,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17930, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=881, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=802, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18343, PETRI_PLACES=466, PETRI_TRANSITIONS=891} [2024-06-27 22:38:55,949 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 425 predicate places. [2024-06-27 22:38:55,949 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 891 transitions, 18343 flow [2024-06-27 22:38:55,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:55,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:55,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:55,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:38:55,950 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:55,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash 765878272, now seen corresponding path program 16 times [2024-06-27 22:38:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:55,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200096410] [2024-06-27 22:38:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:55,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:57,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:57,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200096410] [2024-06-27 22:38:57,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200096410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:57,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:57,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:57,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820356228] [2024-06-27 22:38:57,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:57,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:57,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:57,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:57,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:57,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:57,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 891 transitions, 18343 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:57,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:57,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:57,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:00,028 INFO L124 PetriNetUnfolderBase]: 3213/6190 cut-off events. [2024-06-27 22:39:00,028 INFO L125 PetriNetUnfolderBase]: For 438809/438809 co-relation queries the response was YES. [2024-06-27 22:39:00,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56097 conditions, 6190 events. 3213/6190 cut-off events. For 438809/438809 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 47937 event pairs, 924 based on Foata normal form. 4/5676 useless extension candidates. Maximal degree in co-relation 55878. Up to 5135 conditions per place. [2024-06-27 22:39:00,156 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 813 selfloop transitions, 112 changer transitions 0/933 dead transitions. [2024-06-27 22:39:00,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 933 transitions, 21005 flow [2024-06-27 22:39:00,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 22:39:00,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 22:39:00,158 INFO L175 Difference]: Start difference. First operand has 466 places, 891 transitions, 18343 flow. Second operand 10 states and 158 transitions. [2024-06-27 22:39:00,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 933 transitions, 21005 flow [2024-06-27 22:39:03,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 933 transitions, 20851 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 22:39:03,329 INFO L231 Difference]: Finished difference. Result has 470 places, 911 transitions, 18963 flow [2024-06-27 22:39:03,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18189, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=891, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=783, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18963, PETRI_PLACES=470, PETRI_TRANSITIONS=911} [2024-06-27 22:39:03,330 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 429 predicate places. [2024-06-27 22:39:03,330 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 911 transitions, 18963 flow [2024-06-27 22:39:03,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:03,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:03,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:03,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:39:03,330 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:03,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:03,331 INFO L85 PathProgramCache]: Analyzing trace with hash 765873312, now seen corresponding path program 15 times [2024-06-27 22:39:03,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:03,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445215345] [2024-06-27 22:39:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:05,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:05,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445215345] [2024-06-27 22:39:05,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445215345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:05,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:05,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:05,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308525506] [2024-06-27 22:39:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:05,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:05,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:05,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:05,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:05,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 911 transitions, 18963 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:05,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:05,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:05,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:07,727 INFO L124 PetriNetUnfolderBase]: 3210/6186 cut-off events. [2024-06-27 22:39:07,727 INFO L125 PetriNetUnfolderBase]: For 425819/425819 co-relation queries the response was YES. [2024-06-27 22:39:07,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56378 conditions, 6186 events. 3210/6186 cut-off events. For 425819/425819 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 47953 event pairs, 932 based on Foata normal form. 2/5677 useless extension candidates. Maximal degree in co-relation 56157. Up to 5164 conditions per place. [2024-06-27 22:39:07,839 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 863 selfloop transitions, 62 changer transitions 0/933 dead transitions. [2024-06-27 22:39:07,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 933 transitions, 20991 flow [2024-06-27 22:39:07,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:07,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 22:39:07,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 22:39:07,841 INFO L175 Difference]: Start difference. First operand has 470 places, 911 transitions, 18963 flow. Second operand 10 states and 155 transitions. [2024-06-27 22:39:07,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 933 transitions, 20991 flow [2024-06-27 22:39:11,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 933 transitions, 20795 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 22:39:11,178 INFO L231 Difference]: Finished difference. Result has 473 places, 911 transitions, 18904 flow [2024-06-27 22:39:11,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18767, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=849, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18904, PETRI_PLACES=473, PETRI_TRANSITIONS=911} [2024-06-27 22:39:11,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-27 22:39:11,179 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 911 transitions, 18904 flow [2024-06-27 22:39:11,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:11,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:11,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:11,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:39:11,180 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:11,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:11,181 INFO L85 PathProgramCache]: Analyzing trace with hash 765873436, now seen corresponding path program 3 times [2024-06-27 22:39:11,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:11,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495927584] [2024-06-27 22:39:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:11,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:12,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:12,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495927584] [2024-06-27 22:39:12,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495927584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:12,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:12,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:12,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207359357] [2024-06-27 22:39:12,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:12,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:12,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:12,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:12,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:13,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:13,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 911 transitions, 18904 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:13,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:13,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:13,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:15,478 INFO L124 PetriNetUnfolderBase]: 3206/6178 cut-off events. [2024-06-27 22:39:15,478 INFO L125 PetriNetUnfolderBase]: For 419220/419220 co-relation queries the response was YES. [2024-06-27 22:39:15,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55990 conditions, 6178 events. 3206/6178 cut-off events. For 419220/419220 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 47862 event pairs, 931 based on Foata normal form. 1/5662 useless extension candidates. Maximal degree in co-relation 55768. Up to 5204 conditions per place. [2024-06-27 22:39:15,590 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 841 selfloop transitions, 82 changer transitions 0/931 dead transitions. [2024-06-27 22:39:15,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 931 transitions, 20949 flow [2024-06-27 22:39:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 22:39:15,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-27 22:39:15,599 INFO L175 Difference]: Start difference. First operand has 473 places, 911 transitions, 18904 flow. Second operand 10 states and 154 transitions. [2024-06-27 22:39:15,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 931 transitions, 20949 flow [2024-06-27 22:39:18,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 931 transitions, 20808 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 22:39:18,931 INFO L231 Difference]: Finished difference. Result has 475 places, 911 transitions, 18944 flow [2024-06-27 22:39:18,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18763, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=829, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18944, PETRI_PLACES=475, PETRI_TRANSITIONS=911} [2024-06-27 22:39:18,932 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 434 predicate places. [2024-06-27 22:39:18,944 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 911 transitions, 18944 flow [2024-06-27 22:39:18,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:18,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:18,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:18,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:39:18,944 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:18,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:18,945 INFO L85 PathProgramCache]: Analyzing trace with hash 881342422, now seen corresponding path program 17 times [2024-06-27 22:39:18,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:18,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71261143] [2024-06-27 22:39:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:18,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:20,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71261143] [2024-06-27 22:39:20,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71261143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:20,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:20,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:20,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967712823] [2024-06-27 22:39:20,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:20,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:20,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:20,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:20,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:20,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:20,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 911 transitions, 18944 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:20,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:20,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:20,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:23,098 INFO L124 PetriNetUnfolderBase]: 3441/6539 cut-off events. [2024-06-27 22:39:23,098 INFO L125 PetriNetUnfolderBase]: For 507779/507779 co-relation queries the response was YES. [2024-06-27 22:39:23,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61103 conditions, 6539 events. 3441/6539 cut-off events. For 507779/507779 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 50428 event pairs, 907 based on Foata normal form. 4/5948 useless extension candidates. Maximal degree in co-relation 60880. Up to 4459 conditions per place. [2024-06-27 22:39:23,224 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 705 selfloop transitions, 309 changer transitions 0/1022 dead transitions. [2024-06-27 22:39:23,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 1022 transitions, 23554 flow [2024-06-27 22:39:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:23,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:39:23,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:39:23,225 INFO L175 Difference]: Start difference. First operand has 475 places, 911 transitions, 18944 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:39:23,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 1022 transitions, 23554 flow [2024-06-27 22:39:26,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 1022 transitions, 23335 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:39:26,845 INFO L231 Difference]: Finished difference. Result has 478 places, 968 transitions, 20963 flow [2024-06-27 22:39:26,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18725, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20963, PETRI_PLACES=478, PETRI_TRANSITIONS=968} [2024-06-27 22:39:26,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 437 predicate places. [2024-06-27 22:39:26,845 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 968 transitions, 20963 flow [2024-06-27 22:39:26,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:26,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:26,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:26,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:39:26,846 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:26,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:26,846 INFO L85 PathProgramCache]: Analyzing trace with hash 881342236, now seen corresponding path program 4 times [2024-06-27 22:39:26,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:26,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890049378] [2024-06-27 22:39:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:26,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:28,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:28,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890049378] [2024-06-27 22:39:28,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890049378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:28,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:28,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:28,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068586119] [2024-06-27 22:39:28,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:28,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:28,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:28,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:28,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:28,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:28,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 968 transitions, 20963 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:28,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:28,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:28,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:31,253 INFO L124 PetriNetUnfolderBase]: 3437/6535 cut-off events. [2024-06-27 22:39:31,253 INFO L125 PetriNetUnfolderBase]: For 501254/501254 co-relation queries the response was YES. [2024-06-27 22:39:31,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62797 conditions, 6535 events. 3437/6535 cut-off events. For 501254/501254 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 50396 event pairs, 978 based on Foata normal form. 1/5946 useless extension candidates. Maximal degree in co-relation 62570. Up to 5187 conditions per place. [2024-06-27 22:39:31,363 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 726 selfloop transitions, 266 changer transitions 0/1000 dead transitions. [2024-06-27 22:39:31,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1000 transitions, 23552 flow [2024-06-27 22:39:31,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:39:31,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:39:31,364 INFO L175 Difference]: Start difference. First operand has 478 places, 968 transitions, 20963 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:39:31,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1000 transitions, 23552 flow [2024-06-27 22:39:35,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1000 transitions, 22980 flow, removed 125 selfloop flow, removed 5 redundant places. [2024-06-27 22:39:35,070 INFO L231 Difference]: Finished difference. Result has 484 places, 970 transitions, 21050 flow [2024-06-27 22:39:35,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20391, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=968, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=702, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21050, PETRI_PLACES=484, PETRI_TRANSITIONS=970} [2024-06-27 22:39:35,070 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-27 22:39:35,070 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 970 transitions, 21050 flow [2024-06-27 22:39:35,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:35,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:35,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:35,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:39:35,071 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:35,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash -29804950, now seen corresponding path program 18 times [2024-06-27 22:39:35,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:35,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059246651] [2024-06-27 22:39:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:35,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:37,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:37,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059246651] [2024-06-27 22:39:37,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059246651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:37,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:37,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:37,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735791703] [2024-06-27 22:39:37,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:37,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:37,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:37,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:37,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:37,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:37,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 970 transitions, 21050 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:37,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:37,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:37,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:39,977 INFO L124 PetriNetUnfolderBase]: 3482/6597 cut-off events. [2024-06-27 22:39:39,978 INFO L125 PetriNetUnfolderBase]: For 521077/521077 co-relation queries the response was YES. [2024-06-27 22:39:40,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63003 conditions, 6597 events. 3482/6597 cut-off events. For 521077/521077 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 50788 event pairs, 949 based on Foata normal form. 2/5989 useless extension candidates. Maximal degree in co-relation 62774. Up to 4740 conditions per place. [2024-06-27 22:39:40,127 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 715 selfloop transitions, 310 changer transitions 0/1033 dead transitions. [2024-06-27 22:39:40,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 1033 transitions, 24761 flow [2024-06-27 22:39:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:39:40,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 22:39:40,128 INFO L175 Difference]: Start difference. First operand has 484 places, 970 transitions, 21050 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:39:40,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 1033 transitions, 24761 flow [2024-06-27 22:39:44,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1033 transitions, 24112 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 22:39:44,693 INFO L231 Difference]: Finished difference. Result has 487 places, 988 transitions, 21722 flow [2024-06-27 22:39:44,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20401, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21722, PETRI_PLACES=487, PETRI_TRANSITIONS=988} [2024-06-27 22:39:44,693 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 446 predicate places. [2024-06-27 22:39:44,693 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 988 transitions, 21722 flow [2024-06-27 22:39:44,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:44,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:44,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:44,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:39:44,694 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:44,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash -29989400, now seen corresponding path program 16 times [2024-06-27 22:39:44,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:44,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471481387] [2024-06-27 22:39:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:44,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:46,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:46,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471481387] [2024-06-27 22:39:46,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471481387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:46,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:46,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:46,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125022989] [2024-06-27 22:39:46,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:46,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:46,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:46,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:46,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:46,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:46,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 988 transitions, 21722 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:46,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:46,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:46,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:49,405 INFO L124 PetriNetUnfolderBase]: 3521/6702 cut-off events. [2024-06-27 22:39:49,405 INFO L125 PetriNetUnfolderBase]: For 537913/537913 co-relation queries the response was YES. [2024-06-27 22:39:49,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64237 conditions, 6702 events. 3521/6702 cut-off events. For 537913/537913 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 52023 event pairs, 972 based on Foata normal form. 2/6096 useless extension candidates. Maximal degree in co-relation 64007. Up to 5592 conditions per place. [2024-06-27 22:39:49,531 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 895 selfloop transitions, 113 changer transitions 0/1016 dead transitions. [2024-06-27 22:39:49,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1016 transitions, 24033 flow [2024-06-27 22:39:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:49,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 22:39:49,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41277641277641275 [2024-06-27 22:39:49,532 INFO L175 Difference]: Start difference. First operand has 487 places, 988 transitions, 21722 flow. Second operand 11 states and 168 transitions. [2024-06-27 22:39:49,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1016 transitions, 24033 flow [2024-06-27 22:39:53,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1016 transitions, 23654 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-27 22:39:53,791 INFO L231 Difference]: Finished difference. Result has 493 places, 991 transitions, 21624 flow [2024-06-27 22:39:53,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=21343, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=988, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=875, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21624, PETRI_PLACES=493, PETRI_TRANSITIONS=991} [2024-06-27 22:39:53,792 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-27 22:39:53,792 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 991 transitions, 21624 flow [2024-06-27 22:39:53,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:53,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:53,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:53,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:39:53,793 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:53,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:53,793 INFO L85 PathProgramCache]: Analyzing trace with hash -29989276, now seen corresponding path program 5 times [2024-06-27 22:39:53,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:53,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752367601] [2024-06-27 22:39:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:53,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:55,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:55,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752367601] [2024-06-27 22:39:55,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752367601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:55,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:55,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:55,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46571683] [2024-06-27 22:39:55,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:55,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:55,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:55,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:55,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:55,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:55,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 991 transitions, 21624 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:55,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:55,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:55,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:58,358 INFO L124 PetriNetUnfolderBase]: 3533/6719 cut-off events. [2024-06-27 22:39:58,359 INFO L125 PetriNetUnfolderBase]: For 536192/536192 co-relation queries the response was YES. [2024-06-27 22:39:58,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63833 conditions, 6719 events. 3533/6719 cut-off events. For 536192/536192 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 52064 event pairs, 994 based on Foata normal form. 1/6104 useless extension candidates. Maximal degree in co-relation 63602. Up to 5341 conditions per place. [2024-06-27 22:39:58,487 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 763 selfloop transitions, 259 changer transitions 0/1030 dead transitions. [2024-06-27 22:39:58,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 1030 transitions, 24456 flow [2024-06-27 22:39:58,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:39:58,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:39:58,488 INFO L175 Difference]: Start difference. First operand has 493 places, 991 transitions, 21624 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:39:58,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 1030 transitions, 24456 flow [2024-06-27 22:40:02,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 1030 transitions, 24221 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:02,769 INFO L231 Difference]: Finished difference. Result has 494 places, 999 transitions, 22111 flow [2024-06-27 22:40:02,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=21389, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22111, PETRI_PLACES=494, PETRI_TRANSITIONS=999} [2024-06-27 22:40:02,770 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 453 predicate places. [2024-06-27 22:40:02,770 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 999 transitions, 22111 flow [2024-06-27 22:40:02,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:02,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:02,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:02,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:40:02,771 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:02,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:02,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1419922288, now seen corresponding path program 6 times [2024-06-27 22:40:02,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:02,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373097600] [2024-06-27 22:40:02,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:02,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:04,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:04,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373097600] [2024-06-27 22:40:04,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373097600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:04,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:04,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:04,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224419159] [2024-06-27 22:40:04,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:04,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:04,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:04,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:04,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:04,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:40:04,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 999 transitions, 22111 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:04,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:04,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:40:04,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:07,519 INFO L124 PetriNetUnfolderBase]: 3531/6718 cut-off events. [2024-06-27 22:40:07,519 INFO L125 PetriNetUnfolderBase]: For 538374/538374 co-relation queries the response was YES. [2024-06-27 22:40:07,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63958 conditions, 6718 events. 3531/6718 cut-off events. For 538374/538374 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 52122 event pairs, 979 based on Foata normal form. 1/6105 useless extension candidates. Maximal degree in co-relation 63726. Up to 5339 conditions per place. [2024-06-27 22:40:07,646 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 761 selfloop transitions, 259 changer transitions 0/1028 dead transitions. [2024-06-27 22:40:07,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 1028 transitions, 24508 flow [2024-06-27 22:40:07,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:07,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:07,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:40:07,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:40:07,648 INFO L175 Difference]: Start difference. First operand has 494 places, 999 transitions, 22111 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:40:07,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 1028 transitions, 24508 flow [2024-06-27 22:40:12,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 1028 transitions, 23765 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:12,059 INFO L231 Difference]: Finished difference. Result has 495 places, 999 transitions, 21897 flow [2024-06-27 22:40:12,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=21368, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21897, PETRI_PLACES=495, PETRI_TRANSITIONS=999} [2024-06-27 22:40:12,060 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 454 predicate places. [2024-06-27 22:40:12,060 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 999 transitions, 21897 flow [2024-06-27 22:40:12,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:12,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:12,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:12,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:40:12,060 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:12,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:12,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1419922102, now seen corresponding path program 19 times [2024-06-27 22:40:12,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:12,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863894677] [2024-06-27 22:40:12,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:12,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:13,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:13,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863894677] [2024-06-27 22:40:13,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863894677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:13,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:13,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:13,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805903925] [2024-06-27 22:40:13,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:13,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:13,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:13,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:14,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:40:14,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 999 transitions, 21897 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:14,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:14,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:40:14,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:16,734 INFO L124 PetriNetUnfolderBase]: 3523/6705 cut-off events. [2024-06-27 22:40:16,734 INFO L125 PetriNetUnfolderBase]: For 538568/538568 co-relation queries the response was YES. [2024-06-27 22:40:16,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63054 conditions, 6705 events. 3523/6705 cut-off events. For 538568/538568 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 52002 event pairs, 918 based on Foata normal form. 4/6093 useless extension candidates. Maximal degree in co-relation 62823. Up to 4580 conditions per place. [2024-06-27 22:40:16,849 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 725 selfloop transitions, 314 changer transitions 0/1047 dead transitions. [2024-06-27 22:40:16,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1047 transitions, 25431 flow [2024-06-27 22:40:16,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:40:16,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 22:40:16,851 INFO L175 Difference]: Start difference. First operand has 495 places, 999 transitions, 21897 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:40:16,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 1047 transitions, 25431 flow [2024-06-27 22:40:20,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1047 transitions, 24765 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 22:40:20,960 INFO L231 Difference]: Finished difference. Result has 496 places, 999 transitions, 21884 flow [2024-06-27 22:40:20,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=21231, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21884, PETRI_PLACES=496, PETRI_TRANSITIONS=999} [2024-06-27 22:40:20,961 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 455 predicate places. [2024-06-27 22:40:20,961 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 999 transitions, 21884 flow [2024-06-27 22:40:20,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:20,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:20,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:20,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:40:20,962 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:20,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:20,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1254103478, now seen corresponding path program 20 times [2024-06-27 22:40:20,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:20,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467187153] [2024-06-27 22:40:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:20,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:22,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:22,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467187153] [2024-06-27 22:40:22,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467187153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:22,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:22,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:22,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981373392] [2024-06-27 22:40:22,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:22,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:22,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:22,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:22,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:22,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:40:22,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 999 transitions, 21884 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:22,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:22,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:40:22,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:25,861 INFO L124 PetriNetUnfolderBase]: 3663/6925 cut-off events. [2024-06-27 22:40:25,862 INFO L125 PetriNetUnfolderBase]: For 621052/621052 co-relation queries the response was YES. [2024-06-27 22:40:25,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68054 conditions, 6925 events. 3663/6925 cut-off events. For 621052/621052 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 53679 event pairs, 1005 based on Foata normal form. 2/6284 useless extension candidates. Maximal degree in co-relation 67822. Up to 5631 conditions per place. [2024-06-27 22:40:26,018 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 918 selfloop transitions, 136 changer transitions 0/1062 dead transitions. [2024-06-27 22:40:26,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1062 transitions, 26027 flow [2024-06-27 22:40:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:40:26,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:40:26,019 INFO L175 Difference]: Start difference. First operand has 496 places, 999 transitions, 21884 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:40:26,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 1062 transitions, 26027 flow [2024-06-27 22:40:30,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1062 transitions, 25193 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 22:40:30,921 INFO L231 Difference]: Finished difference. Result has 497 places, 1025 transitions, 22327 flow [2024-06-27 22:40:30,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=21092, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=879, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22327, PETRI_PLACES=497, PETRI_TRANSITIONS=1025} [2024-06-27 22:40:30,935 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 22:40:30,935 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 1025 transitions, 22327 flow [2024-06-27 22:40:30,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:30,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:30,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:30,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:40:30,936 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:30,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:30,936 INFO L85 PathProgramCache]: Analyzing trace with hash 135827674, now seen corresponding path program 21 times [2024-06-27 22:40:30,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:30,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494144723] [2024-06-27 22:40:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:30,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:32,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:32,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494144723] [2024-06-27 22:40:32,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494144723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:32,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:32,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:32,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066259214] [2024-06-27 22:40:32,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:32,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:32,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:32,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:32,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:32,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:40:32,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1025 transitions, 22327 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:32,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:32,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:40:32,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:35,776 INFO L124 PetriNetUnfolderBase]: 3680/6955 cut-off events. [2024-06-27 22:40:35,776 INFO L125 PetriNetUnfolderBase]: For 635896/635896 co-relation queries the response was YES. [2024-06-27 22:40:35,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68176 conditions, 6955 events. 3680/6955 cut-off events. For 635896/635896 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 53942 event pairs, 996 based on Foata normal form. 2/6314 useless extension candidates. Maximal degree in co-relation 67942. Up to 5791 conditions per place. [2024-06-27 22:40:35,918 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 973 selfloop transitions, 95 changer transitions 0/1076 dead transitions. [2024-06-27 22:40:35,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1076 transitions, 25856 flow [2024-06-27 22:40:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 22:40:35,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:40:35,919 INFO L175 Difference]: Start difference. First operand has 497 places, 1025 transitions, 22327 flow. Second operand 11 states and 176 transitions. [2024-06-27 22:40:35,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 1076 transitions, 25856 flow [2024-06-27 22:40:40,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 1076 transitions, 25416 flow, removed 198 selfloop flow, removed 4 redundant places. [2024-06-27 22:40:40,567 INFO L231 Difference]: Finished difference. Result has 506 places, 1044 transitions, 22762 flow [2024-06-27 22:40:40,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=22007, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1025, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=936, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22762, PETRI_PLACES=506, PETRI_TRANSITIONS=1044} [2024-06-27 22:40:40,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 465 predicate places. [2024-06-27 22:40:40,568 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 1044 transitions, 22762 flow [2024-06-27 22:40:40,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:40,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:40,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:40,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:40:40,569 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:40,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1254287928, now seen corresponding path program 17 times [2024-06-27 22:40:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:40,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717210534] [2024-06-27 22:40:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:40,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:42,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:42,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717210534] [2024-06-27 22:40:42,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717210534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:42,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:42,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:42,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208517507] [2024-06-27 22:40:42,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:42,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:42,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:42,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:42,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:42,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:40:42,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 1044 transitions, 22762 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:42,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:42,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:40:42,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:45,049 INFO L124 PetriNetUnfolderBase]: 3708/7023 cut-off events. [2024-06-27 22:40:45,050 INFO L125 PetriNetUnfolderBase]: For 633674/633674 co-relation queries the response was YES. [2024-06-27 22:40:45,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68082 conditions, 7023 events. 3708/7023 cut-off events. For 633674/633674 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 54643 event pairs, 1000 based on Foata normal form. 2/6375 useless extension candidates. Maximal degree in co-relation 67844. Up to 5990 conditions per place. [2024-06-27 22:40:45,200 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 1013 selfloop transitions, 45 changer transitions 0/1066 dead transitions. [2024-06-27 22:40:45,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1066 transitions, 25074 flow [2024-06-27 22:40:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:45,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:45,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 22:40:45,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-27 22:40:45,202 INFO L175 Difference]: Start difference. First operand has 506 places, 1044 transitions, 22762 flow. Second operand 10 states and 153 transitions. [2024-06-27 22:40:45,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 1066 transitions, 25074 flow [2024-06-27 22:40:50,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 1066 transitions, 24950 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 22:40:50,265 INFO L231 Difference]: Finished difference. Result has 511 places, 1046 transitions, 22772 flow [2024-06-27 22:40:50,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=22638, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1044, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=999, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22772, PETRI_PLACES=511, PETRI_TRANSITIONS=1046} [2024-06-27 22:40:50,266 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 470 predicate places. [2024-06-27 22:40:50,266 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 1046 transitions, 22772 flow [2024-06-27 22:40:50,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:50,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:50,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:50,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:40:50,266 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:50,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:50,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1254282968, now seen corresponding path program 22 times [2024-06-27 22:40:50,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:50,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515931730] [2024-06-27 22:40:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:50,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:51,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:51,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515931730] [2024-06-27 22:40:51,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515931730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:51,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:51,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:51,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216596812] [2024-06-27 22:40:51,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:51,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:51,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:51,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:51,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:51,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:40:51,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 1046 transitions, 22772 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:51,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:51,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:40:51,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:54,938 INFO L124 PetriNetUnfolderBase]: 3754/7092 cut-off events. [2024-06-27 22:40:54,939 INFO L125 PetriNetUnfolderBase]: For 655114/655114 co-relation queries the response was YES. [2024-06-27 22:40:55,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68848 conditions, 7092 events. 3754/7092 cut-off events. For 655114/655114 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 55138 event pairs, 1006 based on Foata normal form. 4/6430 useless extension candidates. Maximal degree in co-relation 68608. Up to 5741 conditions per place. [2024-06-27 22:40:55,077 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 921 selfloop transitions, 157 changer transitions 0/1086 dead transitions. [2024-06-27 22:40:55,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 1086 transitions, 26023 flow [2024-06-27 22:40:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:40:55,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 22:40:55,078 INFO L175 Difference]: Start difference. First operand has 511 places, 1046 transitions, 22772 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:40:55,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 1086 transitions, 26023 flow [2024-06-27 22:41:00,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 1086 transitions, 25893 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 22:41:00,298 INFO L231 Difference]: Finished difference. Result has 516 places, 1058 transitions, 23334 flow [2024-06-27 22:41:00,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=22642, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=901, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23334, PETRI_PLACES=516, PETRI_TRANSITIONS=1058} [2024-06-27 22:41:00,298 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 475 predicate places. [2024-06-27 22:41:00,299 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 1058 transitions, 23334 flow [2024-06-27 22:41:00,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:00,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:00,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:00,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:41:00,299 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:00,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:00,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1247607800, now seen corresponding path program 2 times [2024-06-27 22:41:00,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:00,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419973274] [2024-06-27 22:41:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:00,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:01,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:01,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419973274] [2024-06-27 22:41:01,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419973274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:01,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:01,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:01,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525188252] [2024-06-27 22:41:01,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:01,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:01,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:01,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:01,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:01,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:41:01,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 1058 transitions, 23334 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:01,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:01,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:41:01,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:04,751 INFO L124 PetriNetUnfolderBase]: 3778/7147 cut-off events. [2024-06-27 22:41:04,752 INFO L125 PetriNetUnfolderBase]: For 650829/650829 co-relation queries the response was YES. [2024-06-27 22:41:04,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69246 conditions, 7147 events. 3778/7147 cut-off events. For 650829/650829 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 55716 event pairs, 1012 based on Foata normal form. 2/6483 useless extension candidates. Maximal degree in co-relation 69005. Up to 6052 conditions per place. [2024-06-27 22:41:04,907 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 1020 selfloop transitions, 53 changer transitions 0/1081 dead transitions. [2024-06-27 22:41:04,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 1081 transitions, 25641 flow [2024-06-27 22:41:04,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:04,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:04,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 22:41:04,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 22:41:04,908 INFO L175 Difference]: Start difference. First operand has 516 places, 1058 transitions, 23334 flow. Second operand 10 states and 155 transitions. [2024-06-27 22:41:04,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 1081 transitions, 25641 flow [2024-06-27 22:41:10,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 1081 transitions, 25354 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-27 22:41:10,899 INFO L231 Difference]: Finished difference. Result has 519 places, 1060 transitions, 23184 flow [2024-06-27 22:41:10,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23047, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1058, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1005, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23184, PETRI_PLACES=519, PETRI_TRANSITIONS=1060} [2024-06-27 22:41:10,900 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-27 22:41:10,900 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 1060 transitions, 23184 flow [2024-06-27 22:41:10,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:10,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:10,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:10,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:41:10,901 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:10,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:10,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1247616728, now seen corresponding path program 23 times [2024-06-27 22:41:10,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:10,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865227310] [2024-06-27 22:41:10,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:10,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:12,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:12,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865227310] [2024-06-27 22:41:12,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865227310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:12,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:12,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:12,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303591982] [2024-06-27 22:41:12,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:12,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:12,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:12,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:12,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:12,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:41:12,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 1060 transitions, 23184 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:12,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:12,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:41:12,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:15,623 INFO L124 PetriNetUnfolderBase]: 3770/7135 cut-off events. [2024-06-27 22:41:15,623 INFO L125 PetriNetUnfolderBase]: For 644668/644668 co-relation queries the response was YES. [2024-06-27 22:41:15,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68406 conditions, 7135 events. 3770/7135 cut-off events. For 644668/644668 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 55615 event pairs, 1005 based on Foata normal form. 4/6471 useless extension candidates. Maximal degree in co-relation 68164. Up to 6008 conditions per place. [2024-06-27 22:41:15,752 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 1002 selfloop transitions, 71 changer transitions 0/1081 dead transitions. [2024-06-27 22:41:15,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1081 transitions, 25485 flow [2024-06-27 22:41:15,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:41:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:41:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 22:41:15,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41277641277641275 [2024-06-27 22:41:15,753 INFO L175 Difference]: Start difference. First operand has 519 places, 1060 transitions, 23184 flow. Second operand 11 states and 168 transitions. [2024-06-27 22:41:15,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 1081 transitions, 25485 flow [2024-06-27 22:41:21,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 1081 transitions, 25346 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:41:21,184 INFO L231 Difference]: Finished difference. Result has 523 places, 1060 transitions, 23205 flow [2024-06-27 22:41:21,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23045, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=989, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23205, PETRI_PLACES=523, PETRI_TRANSITIONS=1060} [2024-06-27 22:41:21,185 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 482 predicate places. [2024-06-27 22:41:21,185 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 1060 transitions, 23205 flow [2024-06-27 22:41:21,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:21,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:21,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:21,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:41:21,186 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:21,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:21,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1053237666, now seen corresponding path program 24 times [2024-06-27 22:41:21,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:21,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427763288] [2024-06-27 22:41:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:21,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:22,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:22,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427763288] [2024-06-27 22:41:22,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427763288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:22,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:22,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:22,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669222873] [2024-06-27 22:41:22,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:22,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:22,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:22,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:22,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:23,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:41:23,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 1060 transitions, 23205 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:23,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:23,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:41:23,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:25,968 INFO L124 PetriNetUnfolderBase]: 3810/7195 cut-off events. [2024-06-27 22:41:25,969 INFO L125 PetriNetUnfolderBase]: For 655841/655841 co-relation queries the response was YES. [2024-06-27 22:41:26,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69351 conditions, 7195 events. 3810/7195 cut-off events. For 655841/655841 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 56052 event pairs, 1004 based on Foata normal form. 4/6517 useless extension candidates. Maximal degree in co-relation 69108. Up to 6041 conditions per place. [2024-06-27 22:41:26,119 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 995 selfloop transitions, 89 changer transitions 0/1092 dead transitions. [2024-06-27 22:41:26,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 1092 transitions, 26150 flow [2024-06-27 22:41:26,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:41:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:41:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 22:41:26,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-27 22:41:26,121 INFO L175 Difference]: Start difference. First operand has 523 places, 1060 transitions, 23205 flow. Second operand 11 states and 171 transitions. [2024-06-27 22:41:26,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 1092 transitions, 26150 flow [2024-06-27 22:41:31,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 1092 transitions, 25872 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-27 22:41:31,981 INFO L231 Difference]: Finished difference. Result has 524 places, 1070 transitions, 23481 flow [2024-06-27 22:41:31,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=22927, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=980, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23481, PETRI_PLACES=524, PETRI_TRANSITIONS=1070} [2024-06-27 22:41:31,981 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 483 predicate places. [2024-06-27 22:41:31,981 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 1070 transitions, 23481 flow [2024-06-27 22:41:31,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:31,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:31,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:31,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:41:31,982 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:31,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:31,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1247847368, now seen corresponding path program 25 times [2024-06-27 22:41:31,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:31,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244962744] [2024-06-27 22:41:31,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:31,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:33,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:33,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244962744] [2024-06-27 22:41:33,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244962744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:33,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:33,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:33,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137427755] [2024-06-27 22:41:33,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:33,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:33,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:33,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:33,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:33,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:41:33,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1070 transitions, 23481 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:33,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:33,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:41:33,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:36,701 INFO L124 PetriNetUnfolderBase]: 3806/7189 cut-off events. [2024-06-27 22:41:36,702 INFO L125 PetriNetUnfolderBase]: For 636282/636282 co-relation queries the response was YES. [2024-06-27 22:41:36,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69053 conditions, 7189 events. 3806/7189 cut-off events. For 636282/636282 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 56053 event pairs, 992 based on Foata normal form. 2/6509 useless extension candidates. Maximal degree in co-relation 68809. Up to 5932 conditions per place. [2024-06-27 22:41:36,841 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 974 selfloop transitions, 116 changer transitions 0/1098 dead transitions. [2024-06-27 22:41:36,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 1098 transitions, 26156 flow [2024-06-27 22:41:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:41:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:41:36,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 22:41:36,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-27 22:41:36,842 INFO L175 Difference]: Start difference. First operand has 524 places, 1070 transitions, 23481 flow. Second operand 11 states and 175 transitions. [2024-06-27 22:41:36,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 1098 transitions, 26156 flow [2024-06-27 22:41:42,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1098 transitions, 25776 flow, removed 102 selfloop flow, removed 9 redundant places. [2024-06-27 22:41:42,558 INFO L231 Difference]: Finished difference. Result has 526 places, 1070 transitions, 23345 flow [2024-06-27 22:41:42,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23101, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=954, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23345, PETRI_PLACES=526, PETRI_TRANSITIONS=1070} [2024-06-27 22:41:42,559 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 485 predicate places. [2024-06-27 22:41:42,559 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 1070 transitions, 23345 flow [2024-06-27 22:41:42,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:42,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:42,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:42,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:41:42,560 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:42,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:42,560 INFO L85 PathProgramCache]: Analyzing trace with hash -274959722, now seen corresponding path program 26 times [2024-06-27 22:41:42,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:42,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560525283] [2024-06-27 22:41:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:42,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:44,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:44,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560525283] [2024-06-27 22:41:44,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560525283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:44,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:44,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:44,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638391189] [2024-06-27 22:41:44,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:44,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:44,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:44,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:44,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:44,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:41:44,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 1070 transitions, 23345 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:44,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:44,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:41:44,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:47,528 INFO L124 PetriNetUnfolderBase]: 3942/7404 cut-off events. [2024-06-27 22:41:47,529 INFO L125 PetriNetUnfolderBase]: For 736598/736598 co-relation queries the response was YES. [2024-06-27 22:41:47,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73220 conditions, 7404 events. 3942/7404 cut-off events. For 736598/736598 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 57688 event pairs, 1011 based on Foata normal form. 4/6702 useless extension candidates. Maximal degree in co-relation 72975. Up to 5843 conditions per place. [2024-06-27 22:41:47,690 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 987 selfloop transitions, 135 changer transitions 0/1130 dead transitions. [2024-06-27 22:41:47,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 1130 transitions, 27674 flow [2024-06-27 22:41:47,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:41:47,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:41:47,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:41:47,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 22:41:47,694 INFO L175 Difference]: Start difference. First operand has 526 places, 1070 transitions, 23345 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:41:47,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 1130 transitions, 27674 flow [2024-06-27 22:41:53,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1130 transitions, 27464 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 22:41:53,801 INFO L231 Difference]: Finished difference. Result has 529 places, 1088 transitions, 24103 flow [2024-06-27 22:41:53,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23135, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=953, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=24103, PETRI_PLACES=529, PETRI_TRANSITIONS=1088} [2024-06-27 22:41:53,802 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 488 predicate places. [2024-06-27 22:41:53,802 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 1088 transitions, 24103 flow [2024-06-27 22:41:53,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:53,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:53,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:53,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:41:53,802 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:53,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:53,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2052885752, now seen corresponding path program 27 times [2024-06-27 22:41:53,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:53,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399955841] [2024-06-27 22:41:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:53,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:55,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:55,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399955841] [2024-06-27 22:41:55,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399955841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:55,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:55,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:55,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279318074] [2024-06-27 22:41:55,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:55,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:55,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:55,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:55,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:55,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:41:55,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 1088 transitions, 24103 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:55,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:55,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:41:55,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:58,865 INFO L124 PetriNetUnfolderBase]: 4034/7548 cut-off events. [2024-06-27 22:41:58,865 INFO L125 PetriNetUnfolderBase]: For 796818/796818 co-relation queries the response was YES. [2024-06-27 22:41:58,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76578 conditions, 7548 events. 4034/7548 cut-off events. For 796818/796818 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 58838 event pairs, 1065 based on Foata normal form. 2/6825 useless extension candidates. Maximal degree in co-relation 76332. Up to 6411 conditions per place. [2024-06-27 22:41:59,021 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 1062 selfloop transitions, 61 changer transitions 0/1131 dead transitions. [2024-06-27 22:41:59,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 1131 transitions, 27827 flow [2024-06-27 22:41:59,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:41:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:41:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 22:41:59,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-27 22:41:59,023 INFO L175 Difference]: Start difference. First operand has 529 places, 1088 transitions, 24103 flow. Second operand 11 states and 170 transitions. [2024-06-27 22:41:59,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 1131 transitions, 27827 flow [2024-06-27 22:42:06,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1131 transitions, 26771 flow, removed 214 selfloop flow, removed 9 redundant places. [2024-06-27 22:42:06,200 INFO L231 Difference]: Finished difference. Result has 531 places, 1105 transitions, 23917 flow [2024-06-27 22:42:06,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23177, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1088, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1037, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23917, PETRI_PLACES=531, PETRI_TRANSITIONS=1105} [2024-06-27 22:42:06,201 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 490 predicate places. [2024-06-27 22:42:06,201 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 1105 transitions, 23917 flow [2024-06-27 22:42:06,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:06,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:06,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:06,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:42:06,202 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:06,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:06,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1598856470, now seen corresponding path program 28 times [2024-06-27 22:42:06,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:06,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153159219] [2024-06-27 22:42:06,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:06,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:07,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:07,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153159219] [2024-06-27 22:42:07,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153159219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:07,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:07,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:07,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149258797] [2024-06-27 22:42:07,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:07,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:07,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:07,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:07,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:07,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:42:07,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 1105 transitions, 23917 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:07,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:07,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:42:07,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:10,953 INFO L124 PetriNetUnfolderBase]: 4026/7538 cut-off events. [2024-06-27 22:42:10,953 INFO L125 PetriNetUnfolderBase]: For 772974/772974 co-relation queries the response was YES. [2024-06-27 22:42:11,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73976 conditions, 7538 events. 4026/7538 cut-off events. For 772974/772974 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 58807 event pairs, 1065 based on Foata normal form. 4/6820 useless extension candidates. Maximal degree in co-relation 73731. Up to 6407 conditions per place. [2024-06-27 22:42:11,126 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 1061 selfloop transitions, 60 changer transitions 0/1129 dead transitions. [2024-06-27 22:42:11,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 1129 transitions, 26643 flow [2024-06-27 22:42:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:42:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:42:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 22:42:11,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41277641277641275 [2024-06-27 22:42:11,128 INFO L175 Difference]: Start difference. First operand has 531 places, 1105 transitions, 23917 flow. Second operand 11 states and 168 transitions. [2024-06-27 22:42:11,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 1129 transitions, 26643 flow [2024-06-27 22:42:18,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 1129 transitions, 26347 flow, removed 134 selfloop flow, removed 5 redundant places. [2024-06-27 22:42:18,142 INFO L231 Difference]: Finished difference. Result has 537 places, 1105 transitions, 23756 flow [2024-06-27 22:42:18,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23621, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1045, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23756, PETRI_PLACES=537, PETRI_TRANSITIONS=1105} [2024-06-27 22:42:18,143 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 496 predicate places. [2024-06-27 22:42:18,143 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 1105 transitions, 23756 flow [2024-06-27 22:42:18,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:18,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:18,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:18,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 22:42:18,144 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:18,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2052646184, now seen corresponding path program 3 times [2024-06-27 22:42:18,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:18,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458931666] [2024-06-27 22:42:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:18,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:19,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:19,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458931666] [2024-06-27 22:42:19,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458931666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:19,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:19,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:19,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464409039] [2024-06-27 22:42:19,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:19,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:19,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:19,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:19,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:19,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:42:19,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 1105 transitions, 23756 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:19,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:19,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:42:19,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:22,805 INFO L124 PetriNetUnfolderBase]: 4043/7578 cut-off events. [2024-06-27 22:42:22,806 INFO L125 PetriNetUnfolderBase]: For 760326/760326 co-relation queries the response was YES. [2024-06-27 22:42:22,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73536 conditions, 7578 events. 4043/7578 cut-off events. For 760326/760326 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 59189 event pairs, 1071 based on Foata normal form. 2/6856 useless extension candidates. Maximal degree in co-relation 73289. Up to 6498 conditions per place. [2024-06-27 22:42:22,973 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 1085 selfloop transitions, 35 changer transitions 0/1128 dead transitions. [2024-06-27 22:42:22,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 1128 transitions, 26192 flow [2024-06-27 22:42:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:42:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:42:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 22:42:22,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-27 22:42:22,974 INFO L175 Difference]: Start difference. First operand has 537 places, 1105 transitions, 23756 flow. Second operand 9 states and 143 transitions. [2024-06-27 22:42:22,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 1128 transitions, 26192 flow [2024-06-27 22:42:29,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 1128 transitions, 26076 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:42:29,857 INFO L231 Difference]: Finished difference. Result has 538 places, 1106 transitions, 23735 flow [2024-06-27 22:42:29,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23640, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1070, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23735, PETRI_PLACES=538, PETRI_TRANSITIONS=1106} [2024-06-27 22:42:29,866 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 497 predicate places. [2024-06-27 22:42:29,866 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 1106 transitions, 23735 flow [2024-06-27 22:42:29,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:29,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:29,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:29,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 22:42:29,866 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:29,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:29,867 INFO L85 PathProgramCache]: Analyzing trace with hash -565804368, now seen corresponding path program 18 times [2024-06-27 22:42:29,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:29,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233635626] [2024-06-27 22:42:29,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:29,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:31,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:31,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233635626] [2024-06-27 22:42:31,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233635626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:31,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:31,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:31,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205061608] [2024-06-27 22:42:31,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:31,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:31,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:31,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:31,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:31,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:42:31,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 1106 transitions, 23735 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:31,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:31,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:42:31,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:34,614 INFO L124 PetriNetUnfolderBase]: 4040/7571 cut-off events. [2024-06-27 22:42:34,614 INFO L125 PetriNetUnfolderBase]: For 753152/753152 co-relation queries the response was YES. [2024-06-27 22:42:34,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73266 conditions, 7571 events. 4040/7571 cut-off events. For 753152/753152 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 59123 event pairs, 1066 based on Foata normal form. 2/6849 useless extension candidates. Maximal degree in co-relation 73018. Up to 6527 conditions per place. [2024-06-27 22:42:34,750 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 1089 selfloop transitions, 29 changer transitions 0/1126 dead transitions. [2024-06-27 22:42:34,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 1126 transitions, 26153 flow [2024-06-27 22:42:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 22:42:34,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 22:42:34,751 INFO L175 Difference]: Start difference. First operand has 538 places, 1106 transitions, 23735 flow. Second operand 10 states and 150 transitions. [2024-06-27 22:42:34,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 1126 transitions, 26153 flow [2024-06-27 22:42:40,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 1126 transitions, 26072 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 22:42:40,875 INFO L231 Difference]: Finished difference. Result has 541 places, 1106 transitions, 23718 flow [2024-06-27 22:42:40,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23654, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1077, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23718, PETRI_PLACES=541, PETRI_TRANSITIONS=1106} [2024-06-27 22:42:40,876 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 500 predicate places. [2024-06-27 22:42:40,876 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 1106 transitions, 23718 flow [2024-06-27 22:42:40,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:40,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:40,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:40,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 22:42:40,876 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:40,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash 76346304, now seen corresponding path program 29 times [2024-06-27 22:42:40,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:40,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619446867] [2024-06-27 22:42:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:40,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:42,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:42,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619446867] [2024-06-27 22:42:42,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619446867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:42,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:42,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:42,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802811716] [2024-06-27 22:42:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:42,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:42,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:42,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:42,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:42,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:42:42,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 1106 transitions, 23718 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:42,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:42,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:42:42,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:45,895 INFO L124 PetriNetUnfolderBase]: 4032/7555 cut-off events. [2024-06-27 22:42:45,895 INFO L125 PetriNetUnfolderBase]: For 748334/748334 co-relation queries the response was YES. [2024-06-27 22:42:46,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72609 conditions, 7555 events. 4032/7555 cut-off events. For 748334/748334 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 58947 event pairs, 988 based on Foata normal form. 4/6825 useless extension candidates. Maximal degree in co-relation 72360. Up to 5932 conditions per place. [2024-06-27 22:42:46,046 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 958 selfloop transitions, 171 changer transitions 0/1137 dead transitions. [2024-06-27 22:42:46,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 1137 transitions, 26663 flow [2024-06-27 22:42:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:42:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:42:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 22:42:46,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-27 22:42:46,047 INFO L175 Difference]: Start difference. First operand has 541 places, 1106 transitions, 23718 flow. Second operand 11 states and 172 transitions. [2024-06-27 22:42:46,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 1137 transitions, 26663 flow [2024-06-27 22:42:52,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 1137 transitions, 26181 flow, removed 39 selfloop flow, removed 12 redundant places. [2024-06-27 22:42:52,713 INFO L231 Difference]: Finished difference. Result has 540 places, 1106 transitions, 23592 flow [2024-06-27 22:42:52,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23236, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=935, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23592, PETRI_PLACES=540, PETRI_TRANSITIONS=1106} [2024-06-27 22:42:52,714 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 499 predicate places. [2024-06-27 22:42:52,714 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 1106 transitions, 23592 flow [2024-06-27 22:42:52,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:52,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:52,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:52,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 22:42:52,715 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:52,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:52,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1832199364, now seen corresponding path program 30 times [2024-06-27 22:42:52,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:52,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360859166] [2024-06-27 22:42:52,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:52,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:54,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:54,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360859166] [2024-06-27 22:42:54,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360859166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:54,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:54,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:54,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154486546] [2024-06-27 22:42:54,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:54,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:54,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:54,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:54,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:54,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:42:54,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 1106 transitions, 23592 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:54,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:54,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:42:54,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:57,847 INFO L124 PetriNetUnfolderBase]: 4061/7606 cut-off events. [2024-06-27 22:42:57,848 INFO L125 PetriNetUnfolderBase]: For 738198/738198 co-relation queries the response was YES. [2024-06-27 22:42:57,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72532 conditions, 7606 events. 4061/7606 cut-off events. For 738198/738198 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 59407 event pairs, 1061 based on Foata normal form. 4/6876 useless extension candidates. Maximal degree in co-relation 72284. Up to 6514 conditions per place. [2024-06-27 22:42:58,020 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 1094 selfloop transitions, 40 changer transitions 0/1142 dead transitions. [2024-06-27 22:42:58,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 1142 transitions, 26465 flow [2024-06-27 22:42:58,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 22:42:58,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-27 22:42:58,021 INFO L175 Difference]: Start difference. First operand has 540 places, 1106 transitions, 23592 flow. Second operand 10 states and 154 transitions. [2024-06-27 22:42:58,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 1142 transitions, 26465 flow [2024-06-27 22:43:04,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 1142 transitions, 26013 flow, removed 63 selfloop flow, removed 11 redundant places. [2024-06-27 22:43:04,788 INFO L231 Difference]: Finished difference. Result has 540 places, 1121 transitions, 23700 flow [2024-06-27 22:43:04,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23184, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23700, PETRI_PLACES=540, PETRI_TRANSITIONS=1121} [2024-06-27 22:43:04,789 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 499 predicate places. [2024-06-27 22:43:04,789 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 1121 transitions, 23700 flow [2024-06-27 22:43:04,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:04,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:04,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:04,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 22:43:04,790 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:04,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:04,791 INFO L85 PathProgramCache]: Analyzing trace with hash 303477220, now seen corresponding path program 4 times [2024-06-27 22:43:04,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:04,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604442388] [2024-06-27 22:43:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:04,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:06,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:06,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604442388] [2024-06-27 22:43:06,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604442388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:06,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:06,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:43:06,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968399624] [2024-06-27 22:43:06,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:06,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:43:06,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:06,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:43:06,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:43:06,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:43:06,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 1121 transitions, 23700 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:06,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:06,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:43:06,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:09,661 INFO L124 PetriNetUnfolderBase]: 4078/7645 cut-off events. [2024-06-27 22:43:09,661 INFO L125 PetriNetUnfolderBase]: For 727673/727673 co-relation queries the response was YES. [2024-06-27 22:43:09,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71980 conditions, 7645 events. 4078/7645 cut-off events. For 727673/727673 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 59804 event pairs, 1071 based on Foata normal form. 2/6910 useless extension candidates. Maximal degree in co-relation 71731. Up to 6583 conditions per place. [2024-06-27 22:43:09,821 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 1109 selfloop transitions, 24 changer transitions 0/1141 dead transitions. [2024-06-27 22:43:09,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 1141 transitions, 26139 flow [2024-06-27 22:43:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 22:43:09,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027027027027027 [2024-06-27 22:43:09,822 INFO L175 Difference]: Start difference. First operand has 540 places, 1121 transitions, 23700 flow. Second operand 10 states and 149 transitions. [2024-06-27 22:43:09,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 1141 transitions, 26139 flow [2024-06-27 22:43:17,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 1141 transitions, 25941 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-27 22:43:17,277 INFO L231 Difference]: Finished difference. Result has 544 places, 1122 transitions, 23577 flow [2024-06-27 22:43:17,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23502, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1097, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23577, PETRI_PLACES=544, PETRI_TRANSITIONS=1122} [2024-06-27 22:43:17,278 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 503 predicate places. [2024-06-27 22:43:17,278 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 1122 transitions, 23577 flow [2024-06-27 22:43:17,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:17,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:17,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:17,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 22:43:17,279 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:17,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:17,280 INFO L85 PathProgramCache]: Analyzing trace with hash 76525794, now seen corresponding path program 31 times [2024-06-27 22:43:17,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:17,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478580960] [2024-06-27 22:43:17,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:17,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:19,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:19,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478580960] [2024-06-27 22:43:19,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478580960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:19,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:19,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:43:19,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460517565] [2024-06-27 22:43:19,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:19,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:43:19,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:19,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:43:19,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:43:19,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:43:19,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 1122 transitions, 23577 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:19,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:19,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:43:19,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:23,171 INFO L124 PetriNetUnfolderBase]: 4195/7813 cut-off events. [2024-06-27 22:43:23,171 INFO L125 PetriNetUnfolderBase]: For 722799/722799 co-relation queries the response was YES. [2024-06-27 22:43:23,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73437 conditions, 7813 events. 4195/7813 cut-off events. For 722799/722799 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 60880 event pairs, 1048 based on Foata normal form. 2/7015 useless extension candidates. Maximal degree in co-relation 73187. Up to 6267 conditions per place. [2024-06-27 22:43:23,368 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 1027 selfloop transitions, 183 changer transitions 0/1218 dead transitions. [2024-06-27 22:43:23,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 1218 transitions, 28448 flow [2024-06-27 22:43:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:43:23,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:43:23,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-27 22:43:23,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:43:23,370 INFO L175 Difference]: Start difference. First operand has 544 places, 1122 transitions, 23577 flow. Second operand 12 states and 192 transitions. [2024-06-27 22:43:23,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 1218 transitions, 28448 flow [2024-06-27 22:43:30,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 1218 transitions, 28390 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:43:30,900 INFO L231 Difference]: Finished difference. Result has 552 places, 1177 transitions, 25481 flow [2024-06-27 22:43:30,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=23522, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=969, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=25481, PETRI_PLACES=552, PETRI_TRANSITIONS=1177} [2024-06-27 22:43:30,916 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 511 predicate places. [2024-06-27 22:43:30,916 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 1177 transitions, 25481 flow [2024-06-27 22:43:30,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:30,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:30,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:30,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 22:43:30,917 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:30,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:30,917 INFO L85 PathProgramCache]: Analyzing trace with hash 303231142, now seen corresponding path program 32 times [2024-06-27 22:43:30,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:30,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874695131] [2024-06-27 22:43:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:30,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:32,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874695131] [2024-06-27 22:43:32,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874695131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:32,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:32,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:43:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438047868] [2024-06-27 22:43:32,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:32,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:43:32,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:32,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:43:32,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:43:32,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:43:32,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 1177 transitions, 25481 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:32,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:32,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:43:32,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:35,932 INFO L124 PetriNetUnfolderBase]: 4235/7881 cut-off events. [2024-06-27 22:43:35,932 INFO L125 PetriNetUnfolderBase]: For 763063/763063 co-relation queries the response was YES. [2024-06-27 22:43:36,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75773 conditions, 7881 events. 4235/7881 cut-off events. For 763063/763063 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 61457 event pairs, 1070 based on Foata normal form. 4/7083 useless extension candidates. Maximal degree in co-relation 75518. Up to 6686 conditions per place. [2024-06-27 22:43:36,123 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 1135 selfloop transitions, 65 changer transitions 0/1208 dead transitions. [2024-06-27 22:43:36,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 1208 transitions, 28713 flow [2024-06-27 22:43:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:36,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 22:43:36,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 22:43:36,125 INFO L175 Difference]: Start difference. First operand has 552 places, 1177 transitions, 25481 flow. Second operand 10 states and 157 transitions. [2024-06-27 22:43:36,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 1208 transitions, 28713 flow [2024-06-27 22:43:43,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 1208 transitions, 28472 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-27 22:43:44,013 INFO L231 Difference]: Finished difference. Result has 556 places, 1184 transitions, 25668 flow [2024-06-27 22:43:44,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=25243, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25668, PETRI_PLACES=556, PETRI_TRANSITIONS=1184} [2024-06-27 22:43:44,014 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 515 predicate places. [2024-06-27 22:43:44,014 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 1184 transitions, 25668 flow [2024-06-27 22:43:44,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:44,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:44,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:44,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 22:43:44,014 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:44,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:44,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1832430004, now seen corresponding path program 33 times [2024-06-27 22:43:44,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:44,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342666526] [2024-06-27 22:43:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:44,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:45,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:45,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342666526] [2024-06-27 22:43:45,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342666526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:45,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:45,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:43:45,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116601085] [2024-06-27 22:43:45,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:45,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:43:45,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:43:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:43:45,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:43:45,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 1184 transitions, 25668 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:45,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:45,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:43:45,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:49,119 INFO L124 PetriNetUnfolderBase]: 4231/7878 cut-off events. [2024-06-27 22:43:49,119 INFO L125 PetriNetUnfolderBase]: For 731770/731770 co-relation queries the response was YES. [2024-06-27 22:43:49,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74876 conditions, 7878 events. 4231/7878 cut-off events. For 731770/731770 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 61503 event pairs, 1062 based on Foata normal form. 2/7081 useless extension candidates. Maximal degree in co-relation 74619. Up to 6576 conditions per place. [2024-06-27 22:43:49,262 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 1104 selfloop transitions, 104 changer transitions 0/1216 dead transitions. [2024-06-27 22:43:49,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 1216 transitions, 28806 flow [2024-06-27 22:43:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 22:43:49,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-27 22:43:49,263 INFO L175 Difference]: Start difference. First operand has 556 places, 1184 transitions, 25668 flow. Second operand 10 states and 159 transitions. [2024-06-27 22:43:49,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 1216 transitions, 28806 flow [2024-06-27 22:43:55,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 1216 transitions, 28322 flow, removed 84 selfloop flow, removed 8 redundant places. [2024-06-27 22:43:55,548 INFO L231 Difference]: Finished difference. Result has 558 places, 1188 transitions, 25578 flow [2024-06-27 22:43:55,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=25190, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1083, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25578, PETRI_PLACES=558, PETRI_TRANSITIONS=1188} [2024-06-27 22:43:55,549 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 517 predicate places. [2024-06-27 22:43:55,549 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 1188 transitions, 25578 flow [2024-06-27 22:43:55,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:55,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:55,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:55,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 22:43:55,550 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:55,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:55,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1507986856, now seen corresponding path program 5 times [2024-06-27 22:43:55,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:55,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638331192] [2024-06-27 22:43:55,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:55,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:56,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:56,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638331192] [2024-06-27 22:43:56,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638331192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:56,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:56,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:43:56,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721218694] [2024-06-27 22:43:56,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:56,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:43:56,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:43:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:43:56,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:43:56,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 1188 transitions, 25578 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:56,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:56,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:43:56,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:59,833 INFO L124 PetriNetUnfolderBase]: 4248/7918 cut-off events. [2024-06-27 22:43:59,834 INFO L125 PetriNetUnfolderBase]: For 731753/731753 co-relation queries the response was YES. [2024-06-27 22:43:59,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74802 conditions, 7918 events. 4248/7918 cut-off events. For 731753/731753 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 61858 event pairs, 1083 based on Foata normal form. 2/7127 useless extension candidates. Maximal degree in co-relation 74544. Up to 6843 conditions per place. [2024-06-27 22:43:59,993 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 1187 selfloop transitions, 16 changer transitions 0/1211 dead transitions. [2024-06-27 22:43:59,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 1211 transitions, 28198 flow [2024-06-27 22:44:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:44:00,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:44:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 22:44:00,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027027027027027 [2024-06-27 22:44:00,009 INFO L175 Difference]: Start difference. First operand has 558 places, 1188 transitions, 25578 flow. Second operand 10 states and 149 transitions. [2024-06-27 22:44:00,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 1211 transitions, 28198 flow [2024-06-27 22:44:07,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 1211 transitions, 27798 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-27 22:44:07,325 INFO L231 Difference]: Finished difference. Result has 561 places, 1191 transitions, 25259 flow [2024-06-27 22:44:07,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=25178, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25259, PETRI_PLACES=561, PETRI_TRANSITIONS=1191} [2024-06-27 22:44:07,326 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 520 predicate places. [2024-06-27 22:44:07,326 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 1191 transitions, 25259 flow [2024-06-27 22:44:07,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:07,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:07,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:07,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 22:44:07,327 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:07,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:07,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1519384936, now seen corresponding path program 6 times [2024-06-27 22:44:07,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:07,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440989477] [2024-06-27 22:44:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:07,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:08,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:08,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440989477] [2024-06-27 22:44:08,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440989477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:08,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:08,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:08,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108019616] [2024-06-27 22:44:08,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:08,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:08,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:08,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:08,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:08,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:08,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 1191 transitions, 25259 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:08,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:08,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:08,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:12,184 INFO L124 PetriNetUnfolderBase]: 4249/7929 cut-off events. [2024-06-27 22:44:12,184 INFO L125 PetriNetUnfolderBase]: For 713505/713505 co-relation queries the response was YES. [2024-06-27 22:44:12,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74165 conditions, 7929 events. 4249/7929 cut-off events. For 713505/713505 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 62049 event pairs, 1095 based on Foata normal form. 2/7128 useless extension candidates. Maximal degree in co-relation 73905. Up to 6843 conditions per place. [2024-06-27 22:44:12,359 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 1181 selfloop transitions, 24 changer transitions 0/1213 dead transitions. [2024-06-27 22:44:12,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 1213 transitions, 27897 flow [2024-06-27 22:44:12,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-27 22:44:12,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931203931203931 [2024-06-27 22:44:12,361 INFO L175 Difference]: Start difference. First operand has 561 places, 1191 transitions, 25259 flow. Second operand 11 states and 160 transitions. [2024-06-27 22:44:12,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 1213 transitions, 27897 flow [2024-06-27 22:44:19,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 1213 transitions, 27850 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 22:44:19,222 INFO L231 Difference]: Finished difference. Result has 565 places, 1192 transitions, 25293 flow [2024-06-27 22:44:19,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=25212, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=25293, PETRI_PLACES=565, PETRI_TRANSITIONS=1192} [2024-06-27 22:44:19,223 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 524 predicate places. [2024-06-27 22:44:19,223 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 1192 transitions, 25293 flow [2024-06-27 22:44:19,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:19,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:19,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:19,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 22:44:19,223 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:19,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1368633792, now seen corresponding path program 1 times [2024-06-27 22:44:19,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:19,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350898900] [2024-06-27 22:44:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:19,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:20,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:20,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350898900] [2024-06-27 22:44:20,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350898900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:20,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:20,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:20,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2432653] [2024-06-27 22:44:20,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:20,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:20,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:20,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 1192 transitions, 25293 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:20,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:20,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:20,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:23,917 INFO L124 PetriNetUnfolderBase]: 4247/7926 cut-off events. [2024-06-27 22:44:23,917 INFO L125 PetriNetUnfolderBase]: For 703475/703475 co-relation queries the response was YES. [2024-06-27 22:44:24,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74029 conditions, 7926 events. 4247/7926 cut-off events. For 703475/703475 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 62047 event pairs, 1091 based on Foata normal form. 1/7123 useless extension candidates. Maximal degree in co-relation 73768. Up to 6857 conditions per place. [2024-06-27 22:44:24,079 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 1175 selfloop transitions, 27 changer transitions 0/1210 dead transitions. [2024-06-27 22:44:24,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 1210 transitions, 27891 flow [2024-06-27 22:44:24,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:44:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:44:24,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-27 22:44:24,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114114114114114 [2024-06-27 22:44:24,080 INFO L175 Difference]: Start difference. First operand has 565 places, 1192 transitions, 25293 flow. Second operand 9 states and 137 transitions. [2024-06-27 22:44:24,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 1210 transitions, 27891 flow [2024-06-27 22:44:31,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 1210 transitions, 27823 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 22:44:31,049 INFO L231 Difference]: Finished difference. Result has 564 places, 1194 transitions, 25324 flow [2024-06-27 22:44:31,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=25225, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25324, PETRI_PLACES=564, PETRI_TRANSITIONS=1194} [2024-06-27 22:44:31,050 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 523 predicate places. [2024-06-27 22:44:31,050 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 1194 transitions, 25324 flow [2024-06-27 22:44:31,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:31,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:31,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:31,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 22:44:31,050 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:31,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:31,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1688629168, now seen corresponding path program 1 times [2024-06-27 22:44:31,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:31,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983938335] [2024-06-27 22:44:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:31,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:31,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:31,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983938335] [2024-06-27 22:44:31,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983938335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:31,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:31,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:31,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753808999] [2024-06-27 22:44:31,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:31,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:31,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:31,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:31,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:31,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:31,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 1194 transitions, 25324 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:31,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:31,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:31,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:35,536 INFO L124 PetriNetUnfolderBase]: 4284/7970 cut-off events. [2024-06-27 22:44:35,537 INFO L125 PetriNetUnfolderBase]: For 737769/737769 co-relation queries the response was YES. [2024-06-27 22:44:35,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74725 conditions, 7970 events. 4284/7970 cut-off events. For 737769/737769 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 62211 event pairs, 869 based on Foata normal form. 2/7169 useless extension candidates. Maximal degree in co-relation 74464. Up to 6113 conditions per place. [2024-06-27 22:44:35,677 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 1091 selfloop transitions, 148 changer transitions 0/1247 dead transitions. [2024-06-27 22:44:35,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 1247 transitions, 28650 flow [2024-06-27 22:44:35,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:44:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:44:35,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-27 22:44:35,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-27 22:44:35,678 INFO L175 Difference]: Start difference. First operand has 564 places, 1194 transitions, 25324 flow. Second operand 12 states and 205 transitions. [2024-06-27 22:44:35,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 1247 transitions, 28650 flow [2024-06-27 22:44:42,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1247 transitions, 28599 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:44:43,002 INFO L231 Difference]: Finished difference. Result has 570 places, 1196 transitions, 25614 flow [2024-06-27 22:44:43,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=25273, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1047, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=25614, PETRI_PLACES=570, PETRI_TRANSITIONS=1196} [2024-06-27 22:44:43,002 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 529 predicate places. [2024-06-27 22:44:43,002 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 1196 transitions, 25614 flow [2024-06-27 22:44:43,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:43,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:43,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:43,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 22:44:43,003 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:43,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash -689348818, now seen corresponding path program 2 times [2024-06-27 22:44:43,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:43,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585116784] [2024-06-27 22:44:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:43,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:43,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:43,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:43,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585116784] [2024-06-27 22:44:43,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585116784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:43,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:43,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:43,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160373150] [2024-06-27 22:44:43,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:43,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:43,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:43,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:43,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:44,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:44,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 1196 transitions, 25614 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:44,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:44,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:44,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:47,246 INFO L124 PetriNetUnfolderBase]: 4301/8049 cut-off events. [2024-06-27 22:44:47,246 INFO L125 PetriNetUnfolderBase]: For 749846/749846 co-relation queries the response was YES. [2024-06-27 22:44:47,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75446 conditions, 8049 events. 4301/8049 cut-off events. For 749846/749846 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 63366 event pairs, 968 based on Foata normal form. 2/7239 useless extension candidates. Maximal degree in co-relation 75185. Up to 6687 conditions per place. [2024-06-27 22:44:47,412 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 1085 selfloop transitions, 149 changer transitions 0/1242 dead transitions. [2024-06-27 22:44:47,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1242 transitions, 28750 flow [2024-06-27 22:44:47,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:44:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:44:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-27 22:44:47,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391891891891892 [2024-06-27 22:44:47,414 INFO L175 Difference]: Start difference. First operand has 570 places, 1196 transitions, 25614 flow. Second operand 12 states and 195 transitions. [2024-06-27 22:44:47,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1242 transitions, 28750 flow [2024-06-27 22:44:55,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 1242 transitions, 28545 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 22:44:55,089 INFO L231 Difference]: Finished difference. Result has 575 places, 1197 transitions, 25738 flow [2024-06-27 22:44:55,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=25419, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1047, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=25738, PETRI_PLACES=575, PETRI_TRANSITIONS=1197} [2024-06-27 22:44:55,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 534 predicate places. [2024-06-27 22:44:55,090 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 1197 transitions, 25738 flow [2024-06-27 22:44:55,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:55,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:55,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:55,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 22:44:55,091 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:55,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:55,091 INFO L85 PathProgramCache]: Analyzing trace with hash -655304308, now seen corresponding path program 3 times [2024-06-27 22:44:55,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:55,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881751987] [2024-06-27 22:44:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:55,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:55,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:55,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:55,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881751987] [2024-06-27 22:44:55,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881751987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:55,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:55,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:55,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683315711] [2024-06-27 22:44:55,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:55,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:55,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:55,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:55,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:56,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:56,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 1197 transitions, 25738 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:56,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:56,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:56,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:59,597 INFO L124 PetriNetUnfolderBase]: 4309/8055 cut-off events. [2024-06-27 22:44:59,597 INFO L125 PetriNetUnfolderBase]: For 739155/739155 co-relation queries the response was YES. [2024-06-27 22:44:59,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75317 conditions, 8055 events. 4309/8055 cut-off events. For 739155/739155 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 63399 event pairs, 959 based on Foata normal form. 2/7244 useless extension candidates. Maximal degree in co-relation 75054. Up to 6513 conditions per place. [2024-06-27 22:44:59,766 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 1091 selfloop transitions, 147 changer transitions 0/1246 dead transitions. [2024-06-27 22:44:59,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 1246 transitions, 28826 flow [2024-06-27 22:44:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:44:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:44:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-27 22:44:59,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-06-27 22:44:59,767 INFO L175 Difference]: Start difference. First operand has 575 places, 1197 transitions, 25738 flow. Second operand 12 states and 199 transitions. [2024-06-27 22:44:59,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 1246 transitions, 28826 flow [2024-06-27 22:45:07,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 1246 transitions, 28496 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 22:45:07,981 INFO L231 Difference]: Finished difference. Result has 575 places, 1198 transitions, 25727 flow [2024-06-27 22:45:07,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=25413, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1050, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=25727, PETRI_PLACES=575, PETRI_TRANSITIONS=1198} [2024-06-27 22:45:07,982 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 534 predicate places. [2024-06-27 22:45:07,982 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 1198 transitions, 25727 flow [2024-06-27 22:45:07,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:07,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:07,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:07,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 22:45:07,983 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:07,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:07,983 INFO L85 PathProgramCache]: Analyzing trace with hash -804377596, now seen corresponding path program 4 times [2024-06-27 22:45:07,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:07,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424187064] [2024-06-27 22:45:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:07,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:08,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:08,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424187064] [2024-06-27 22:45:08,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424187064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:08,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:08,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:45:08,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627066129] [2024-06-27 22:45:08,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:08,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:45:08,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:08,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:45:08,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:45:08,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:45:08,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 1198 transitions, 25727 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:08,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:08,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:45:08,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:12,505 INFO L124 PetriNetUnfolderBase]: 4130/7827 cut-off events. [2024-06-27 22:45:12,506 INFO L125 PetriNetUnfolderBase]: For 769057/769067 co-relation queries the response was YES. [2024-06-27 22:45:12,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72032 conditions, 7827 events. 4130/7827 cut-off events. For 769057/769067 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 62343 event pairs, 641 based on Foata normal form. 6/7138 useless extension candidates. Maximal degree in co-relation 71768. Up to 3160 conditions per place. [2024-06-27 22:45:12,906 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 574 selfloop transitions, 130 changer transitions 0/1264 dead transitions. [2024-06-27 22:45:12,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 1264 transitions, 28224 flow [2024-06-27 22:45:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:45:12,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:45:12,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-27 22:45:12,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 22:45:12,907 INFO L175 Difference]: Start difference. First operand has 575 places, 1198 transitions, 25727 flow. Second operand 12 states and 225 transitions. [2024-06-27 22:45:12,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 1264 transitions, 28224 flow [2024-06-27 22:45:20,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 1264 transitions, 27991 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:45:20,721 INFO L231 Difference]: Finished difference. Result has 579 places, 1202 transitions, 25918 flow [2024-06-27 22:45:20,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=25494, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1070, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=25918, PETRI_PLACES=579, PETRI_TRANSITIONS=1202} [2024-06-27 22:45:20,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 538 predicate places. [2024-06-27 22:45:20,723 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 1202 transitions, 25918 flow [2024-06-27 22:45:20,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:20,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:20,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:20,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 22:45:20,723 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:20,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2132611255, now seen corresponding path program 1 times [2024-06-27 22:45:20,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:20,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408839836] [2024-06-27 22:45:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:20,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:23,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:23,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408839836] [2024-06-27 22:45:23,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408839836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:23,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:23,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:45:23,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988286267] [2024-06-27 22:45:23,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:23,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:45:23,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:23,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:45:23,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:45:24,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:45:24,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 1202 transitions, 25918 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:24,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:24,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:45:24,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:28,627 INFO L124 PetriNetUnfolderBase]: 4351/8176 cut-off events. [2024-06-27 22:45:28,627 INFO L125 PetriNetUnfolderBase]: For 765632/765632 co-relation queries the response was YES. [2024-06-27 22:45:28,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76582 conditions, 8176 events. 4351/8176 cut-off events. For 765632/765632 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 64818 event pairs, 962 based on Foata normal form. 2/7355 useless extension candidates. Maximal degree in co-relation 76315. Up to 6592 conditions per place. [2024-06-27 22:45:28,812 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 1060 selfloop transitions, 185 changer transitions 0/1253 dead transitions. [2024-06-27 22:45:28,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 1253 transitions, 29420 flow [2024-06-27 22:45:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:45:28,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:45:28,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 213 transitions. [2024-06-27 22:45:28,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44282744282744285 [2024-06-27 22:45:28,814 INFO L175 Difference]: Start difference. First operand has 579 places, 1202 transitions, 25918 flow. Second operand 13 states and 213 transitions. [2024-06-27 22:45:28,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 1253 transitions, 29420 flow [2024-06-27 22:45:38,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 1253 transitions, 29166 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-27 22:45:38,787 INFO L231 Difference]: Finished difference. Result has 583 places, 1202 transitions, 26052 flow [2024-06-27 22:45:38,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=25668, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1017, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=26052, PETRI_PLACES=583, PETRI_TRANSITIONS=1202} [2024-06-27 22:45:38,788 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 542 predicate places. [2024-06-27 22:45:38,789 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 1202 transitions, 26052 flow [2024-06-27 22:45:38,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:38,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:38,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:38,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 22:45:38,789 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:38,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:38,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1328369100, now seen corresponding path program 5 times [2024-06-27 22:45:38,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:38,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688626373] [2024-06-27 22:45:38,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:38,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:41,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:41,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688626373] [2024-06-27 22:45:41,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688626373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:41,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:41,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:45:41,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364635755] [2024-06-27 22:45:41,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:41,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:45:41,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:41,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:45:41,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:45:41,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:45:41,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 1202 transitions, 26052 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:41,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:41,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:45:41,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:45,806 INFO L124 PetriNetUnfolderBase]: 4462/8387 cut-off events. [2024-06-27 22:45:45,807 INFO L125 PetriNetUnfolderBase]: For 774856/774856 co-relation queries the response was YES. [2024-06-27 22:45:45,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78046 conditions, 8387 events. 4462/8387 cut-off events. For 774856/774856 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 66852 event pairs, 990 based on Foata normal form. 2/7565 useless extension candidates. Maximal degree in co-relation 77780. Up to 6465 conditions per place. [2024-06-27 22:45:45,972 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 1145 selfloop transitions, 112 changer transitions 0/1265 dead transitions. [2024-06-27 22:45:45,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 1265 transitions, 29498 flow [2024-06-27 22:45:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:45:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:45:45,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-06-27 22:45:45,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45114345114345117 [2024-06-27 22:45:45,974 INFO L175 Difference]: Start difference. First operand has 583 places, 1202 transitions, 26052 flow. Second operand 13 states and 217 transitions. [2024-06-27 22:45:45,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 1265 transitions, 29498 flow [2024-06-27 22:45:54,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 1265 transitions, 29093 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-27 22:45:54,276 INFO L231 Difference]: Finished difference. Result has 585 places, 1217 transitions, 26231 flow [2024-06-27 22:45:54,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=25661, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1096, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=26231, PETRI_PLACES=585, PETRI_TRANSITIONS=1217} [2024-06-27 22:45:54,276 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 544 predicate places. [2024-06-27 22:45:54,277 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 1217 transitions, 26231 flow [2024-06-27 22:45:54,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:54,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:54,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:54,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 22:45:54,277 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:54,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:54,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1056792921, now seen corresponding path program 2 times [2024-06-27 22:45:54,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:54,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571992517] [2024-06-27 22:45:54,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:54,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:56,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:56,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571992517] [2024-06-27 22:45:56,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571992517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:56,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:56,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:45:56,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941871679] [2024-06-27 22:45:56,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:56,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:45:56,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:45:56,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:45:56,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:45:56,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 1217 transitions, 26231 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:56,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:56,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:45:56,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:01,348 INFO L124 PetriNetUnfolderBase]: 4458/8409 cut-off events. [2024-06-27 22:46:01,348 INFO L125 PetriNetUnfolderBase]: For 749423/749423 co-relation queries the response was YES. [2024-06-27 22:46:01,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77773 conditions, 8409 events. 4458/8409 cut-off events. For 749423/749423 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 67309 event pairs, 1092 based on Foata normal form. 2/7567 useless extension candidates. Maximal degree in co-relation 77506. Up to 7069 conditions per place. [2024-06-27 22:46:01,519 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 1111 selfloop transitions, 124 changer transitions 0/1243 dead transitions. [2024-06-27 22:46:01,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 1243 transitions, 28889 flow [2024-06-27 22:46:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:46:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:46:01,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-27 22:46:01,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-27 22:46:01,520 INFO L175 Difference]: Start difference. First operand has 585 places, 1217 transitions, 26231 flow. Second operand 12 states and 190 transitions. [2024-06-27 22:46:01,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 1243 transitions, 28889 flow [2024-06-27 22:46:10,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 1243 transitions, 28686 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-06-27 22:46:11,016 INFO L231 Difference]: Finished difference. Result has 591 places, 1217 transitions, 26292 flow [2024-06-27 22:46:11,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=26028, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1093, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=26292, PETRI_PLACES=591, PETRI_TRANSITIONS=1217} [2024-06-27 22:46:11,018 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 550 predicate places. [2024-06-27 22:46:11,018 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 1217 transitions, 26292 flow [2024-06-27 22:46:11,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:11,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:11,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:11,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 22:46:11,018 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:11,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:11,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1419702540, now seen corresponding path program 6 times [2024-06-27 22:46:11,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:11,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790324419] [2024-06-27 22:46:11,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:11,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:13,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:13,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790324419] [2024-06-27 22:46:13,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790324419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:13,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:13,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:46:13,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257150703] [2024-06-27 22:46:13,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:13,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:46:13,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:13,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:46:13,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:46:13,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:46:13,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 1217 transitions, 26292 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:13,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:13,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:46:13,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:18,566 INFO L124 PetriNetUnfolderBase]: 4571/8692 cut-off events. [2024-06-27 22:46:18,567 INFO L125 PetriNetUnfolderBase]: For 776128/776128 co-relation queries the response was YES. [2024-06-27 22:46:18,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79359 conditions, 8692 events. 4571/8692 cut-off events. For 776128/776128 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 70566 event pairs, 1098 based on Foata normal form. 2/7838 useless extension candidates. Maximal degree in co-relation 79089. Up to 7077 conditions per place. [2024-06-27 22:46:18,749 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 1153 selfloop transitions, 115 changer transitions 0/1276 dead transitions. [2024-06-27 22:46:18,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 1276 transitions, 29772 flow [2024-06-27 22:46:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:46:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:46:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 222 transitions. [2024-06-27 22:46:18,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 22:46:18,751 INFO L175 Difference]: Start difference. First operand has 591 places, 1217 transitions, 26292 flow. Second operand 14 states and 222 transitions. [2024-06-27 22:46:18,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 1276 transitions, 29772 flow Killed by 15