./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix006_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix006_tso.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/mix006_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix006_tso.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:50:13,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:50:13,908 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:50:13,914 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:50:13,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:50:13,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:50:13,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:50:13,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:50:13,946 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:50:13,947 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:50:13,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:50:13,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:50:13,949 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:50:13,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:50:13,949 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:50:13,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:50:13,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:50:13,951 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:50:13,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:50:13,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:50:13,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:50:13,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:50:13,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:50:13,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:50:13,961 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:50:13,961 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:50:13,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:50:13,961 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:50:13,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:50:13,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:50:13,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:50:13,963 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:50:13,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:50:13,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:50:13,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:50:13,968 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:50:13,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:50:13,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:50:13,969 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:50:13,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:50:13,969 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:50:13,970 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:50:13,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:50:13,970 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:50:14,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:50:14,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:50:14,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:50:14,254 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:50:14,254 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:50:14,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix006_tso.oepc.i [2024-06-27 19:50:15,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:50:15,666 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:50:15,667 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix006_tso.oepc.i [2024-06-27 19:50:15,690 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e1d9c0a/84df48a2192f4d8fb6434c15926b55fd/FLAGd12f0f299 [2024-06-27 19:50:15,702 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99e1d9c0a/84df48a2192f4d8fb6434c15926b55fd [2024-06-27 19:50:15,704 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:50:15,705 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:50:15,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix006_tso.oepc.yml/witness.yml [2024-06-27 19:50:15,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:50:15,909 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:50:15,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:50:15,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:50:15,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:50:15,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:50:15" (1/2) ... [2024-06-27 19:50:15,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f67678e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:50:15, skipping insertion in model container [2024-06-27 19:50:15,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:50:15" (1/2) ... [2024-06-27 19:50:15,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45c4d97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:50:15, skipping insertion in model container [2024-06-27 19:50:15,919 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:50:15" (2/2) ... [2024-06-27 19:50:15,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f67678e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:50:15, skipping insertion in model container [2024-06-27 19:50:15,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:50:15" (2/2) ... [2024-06-27 19:50:15,920 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:50:16,133 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:50:16,134 INFO L97 edCorrectnessWitness]: Location invariant before [L904-L904] (((((((((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-27 19:50:16,134 INFO L97 edCorrectnessWitness]: Location invariant before [L905-L905] (((((((((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-27 19:50:16,134 INFO L97 edCorrectnessWitness]: Location invariant before [L902-L902] (((((((((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-27 19:50:16,134 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:50:16,134 INFO L106 edCorrectnessWitness]: ghost_update [L900-L900] multithreaded = 1; [2024-06-27 19:50:16,181 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:50:16,679 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:50:16,695 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:50:16,854 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:50:16,890 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:50:16,891 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:50:16 WrapperNode [2024-06-27 19:50:16,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:50:16,892 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:50:16,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:50:16,892 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:50:16,899 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 07:50:16" (1/1) ... [2024-06-27 19:50:16,920 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 07:50:16" (1/1) ... [2024-06-27 19:50:16,967 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 271 [2024-06-27 19:50:16,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:50:16,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:50:16,973 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:50:16,973 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:50:16,981 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 07:50:16" (1/1) ... [2024-06-27 19:50:16,981 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 07:50:16" (1/1) ... [2024-06-27 19:50:16,986 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 07:50:16" (1/1) ... [2024-06-27 19:50:17,018 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 19:50:17,018 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 07:50:16" (1/1) ... [2024-06-27 19:50:17,019 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 07:50:16" (1/1) ... [2024-06-27 19:50:17,047 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 07:50:16" (1/1) ... [2024-06-27 19:50:17,049 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 07:50:16" (1/1) ... [2024-06-27 19:50:17,051 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 07:50:16" (1/1) ... [2024-06-27 19:50:17,063 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 07:50:16" (1/1) ... [2024-06-27 19:50:17,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:50:17,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:50:17,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:50:17,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:50:17,069 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 07:50:16" (1/1) ... [2024-06-27 19:50:17,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:50:17,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:50:17,107 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 19:50:17,116 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 19:50:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:50:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:50:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:50:17,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:50:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:50:17,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:50:17,150 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 19:50:17,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 19:50:17,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:50:17,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:50:17,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:50:17,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:50:17,153 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 19:50:17,347 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:50:17,350 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:50:17,896 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:50:17,898 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:50:18,195 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:50:18,196 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:50:18,196 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:50:18 BoogieIcfgContainer [2024-06-27 19:50:18,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:50:18,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:50:18,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:50:18,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:50:18,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:50:15" (1/4) ... [2024-06-27 19:50:18,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4eac86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:50:18, skipping insertion in model container [2024-06-27 19:50:18,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:50:15" (2/4) ... [2024-06-27 19:50:18,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4eac86 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:50:18, skipping insertion in model container [2024-06-27 19:50:18,204 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 07:50:16" (3/4) ... [2024-06-27 19:50:18,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4eac86 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:50:18, skipping insertion in model container [2024-06-27 19:50:18,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:50:18" (4/4) ... [2024-06-27 19:50:18,205 INFO L112 eAbstractionObserver]: Analyzing ICFG mix006_tso.oepc.i [2024-06-27 19:50:18,224 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:50:18,224 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 19:50:18,224 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:50:18,281 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:50:18,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-27 19:50:18,353 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-27 19:50:18,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:50:18,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 19:50:18,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-27 19:50:18,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-27 19:50:18,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:50:18,382 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;@19b988cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:50:18,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 19:50:18,387 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:50:18,387 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:50:18,388 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:50:18,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:18,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:50:18,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:18,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:18,395 INFO L85 PathProgramCache]: Analyzing trace with hash 585193627, now seen corresponding path program 1 times [2024-06-27 19:50:18,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:18,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113295405] [2024-06-27 19:50:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:18,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:20,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:20,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113295405] [2024-06-27 19:50:20,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113295405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:20,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:20,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:50:20,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55564046] [2024-06-27 19:50:20,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:20,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:50:20,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:20,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:50:20,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:50:20,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-27 19:50:20,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:20,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:20,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-27 19:50:20,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:21,168 INFO L124 PetriNetUnfolderBase]: 1955/2965 cut-off events. [2024-06-27 19:50:21,168 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-06-27 19:50:21,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5969 conditions, 2965 events. 1955/2965 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14230 event pairs, 1404 based on Foata normal form. 1/2875 useless extension candidates. Maximal degree in co-relation 5957. Up to 2893 conditions per place. [2024-06-27 19:50:21,191 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 34 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-27 19:50:21,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 177 flow [2024-06-27 19:50:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:50:21,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:50:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-06-27 19:50:21,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-06-27 19:50:21,205 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 71 transitions. [2024-06-27 19:50:21,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 177 flow [2024-06-27 19:50:21,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 19:50:21,211 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-27 19:50:21,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-27 19:50:21,216 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-27 19:50:21,217 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-27 19:50:21,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:21,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:21,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:21,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:50:21,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:21,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:21,219 INFO L85 PathProgramCache]: Analyzing trace with hash -269615622, now seen corresponding path program 1 times [2024-06-27 19:50:21,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:21,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698028408] [2024-06-27 19:50:21,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:21,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:22,890 INFO 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 19:50:22,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:22,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698028408] [2024-06-27 19:50:22,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698028408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:22,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:22,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:50:22,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742668411] [2024-06-27 19:50:22,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:22,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:50:22,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:22,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:50:22,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:50:22,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 19:50:22,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:22,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:22,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 19:50:22,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:23,619 INFO L124 PetriNetUnfolderBase]: 2246/3319 cut-off events. [2024-06-27 19:50:23,619 INFO L125 PetriNetUnfolderBase]: For 621/621 co-relation queries the response was YES. [2024-06-27 19:50:23,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7534 conditions, 3319 events. 2246/3319 cut-off events. For 621/621 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15402 event pairs, 1443 based on Foata normal form. 3/3319 useless extension candidates. Maximal degree in co-relation 7522. Up to 3292 conditions per place. [2024-06-27 19:50:23,639 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 42 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-27 19:50:23,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 246 flow [2024-06-27 19:50:23,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:50:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:50:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-06-27 19:50:23,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 19:50:23,644 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 88 transitions. [2024-06-27 19:50:23,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 246 flow [2024-06-27 19:50:23,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:50:23,647 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 138 flow [2024-06-27 19:50:23,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-27 19:50:23,648 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-27 19:50:23,649 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 138 flow [2024-06-27 19:50:23,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:23,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:23,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:23,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:50:23,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:23,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:23,653 INFO L85 PathProgramCache]: Analyzing trace with hash 231851140, now seen corresponding path program 1 times [2024-06-27 19:50:23,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:23,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68569903] [2024-06-27 19:50:23,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:23,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:25,619 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 19:50:25,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:25,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68569903] [2024-06-27 19:50:25,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68569903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:25,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:25,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:50:25,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064482886] [2024-06-27 19:50:25,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:25,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:50:25,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:25,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:50:25,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:50:25,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 19:50:25,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:25,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:25,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 19:50:25,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:26,403 INFO L124 PetriNetUnfolderBase]: 2234/3301 cut-off events. [2024-06-27 19:50:26,403 INFO L125 PetriNetUnfolderBase]: For 1740/1740 co-relation queries the response was YES. [2024-06-27 19:50:26,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8266 conditions, 3301 events. 2234/3301 cut-off events. For 1740/1740 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15269 event pairs, 1059 based on Foata normal form. 6/3304 useless extension candidates. Maximal degree in co-relation 8252. Up to 3244 conditions per place. [2024-06-27 19:50:26,423 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 50 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-06-27 19:50:26,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 328 flow [2024-06-27 19:50:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:50:26,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:50:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-06-27 19:50:26,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-27 19:50:26,429 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 138 flow. Second operand 5 states and 108 transitions. [2024-06-27 19:50:26,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 328 flow [2024-06-27 19:50:26,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 314 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 19:50:26,433 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 174 flow [2024-06-27 19:50:26,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-27 19:50:26,435 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-06-27 19:50:26,435 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 174 flow [2024-06-27 19:50:26,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:26,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:26,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:26,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:50:26,436 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:26,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:26,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1184260269, now seen corresponding path program 1 times [2024-06-27 19:50:26,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:26,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302656604] [2024-06-27 19:50:26,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:26,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:29,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302656604] [2024-06-27 19:50:29,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302656604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:29,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:29,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:50:29,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844249124] [2024-06-27 19:50:29,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:29,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:50:29,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:29,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:50:29,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:50:29,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-27 19:50:29,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:29,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:29,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-27 19:50:29,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:30,380 INFO L124 PetriNetUnfolderBase]: 2225/3286 cut-off events. [2024-06-27 19:50:30,381 INFO L125 PetriNetUnfolderBase]: For 3244/3244 co-relation queries the response was YES. [2024-06-27 19:50:30,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8980 conditions, 3286 events. 2225/3286 cut-off events. For 3244/3244 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15148 event pairs, 846 based on Foata normal form. 6/3289 useless extension candidates. Maximal degree in co-relation 8965. Up to 3199 conditions per place. [2024-06-27 19:50:30,400 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 54 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-06-27 19:50:30,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 382 flow [2024-06-27 19:50:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:50:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:50:30,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-27 19:50:30,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-27 19:50:30,403 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 174 flow. Second operand 6 states and 123 transitions. [2024-06-27 19:50:30,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 382 flow [2024-06-27 19:50:30,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 358 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 19:50:30,408 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 193 flow [2024-06-27 19:50:30,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-06-27 19:50:30,410 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-06-27 19:50:30,410 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 193 flow [2024-06-27 19:50:30,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:30,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:30,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:30,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:50:30,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:30,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:30,413 INFO L85 PathProgramCache]: Analyzing trace with hash -654356127, now seen corresponding path program 1 times [2024-06-27 19:50:30,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:30,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395814166] [2024-06-27 19:50:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:30,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:31,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:31,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395814166] [2024-06-27 19:50:31,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395814166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:31,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:31,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:50:31,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109639324] [2024-06-27 19:50:31,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:31,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:50:31,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:31,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:50:31,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:50:31,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:50:31,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:31,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:31,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:50:31,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:32,551 INFO L124 PetriNetUnfolderBase]: 1923/2928 cut-off events. [2024-06-27 19:50:32,551 INFO L125 PetriNetUnfolderBase]: For 4285/4285 co-relation queries the response was YES. [2024-06-27 19:50:32,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8425 conditions, 2928 events. 1923/2928 cut-off events. For 4285/4285 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14051 event pairs, 990 based on Foata normal form. 2/2891 useless extension candidates. Maximal degree in co-relation 8408. Up to 2835 conditions per place. [2024-06-27 19:50:32,576 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 45 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2024-06-27 19:50:32,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 343 flow [2024-06-27 19:50:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:50:32,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:50:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-27 19:50:32,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-27 19:50:32,578 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 193 flow. Second operand 5 states and 87 transitions. [2024-06-27 19:50:32,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 343 flow [2024-06-27 19:50:32,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 310 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 19:50:32,589 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 206 flow [2024-06-27 19:50:32,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-27 19:50:32,592 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-27 19:50:32,592 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 206 flow [2024-06-27 19:50:32,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:32,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:32,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:32,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:50:32,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:32,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1189797769, now seen corresponding path program 1 times [2024-06-27 19:50:32,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:32,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747158858] [2024-06-27 19:50:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:32,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:34,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747158858] [2024-06-27 19:50:34,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747158858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:34,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:34,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:50:34,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448204739] [2024-06-27 19:50:34,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:34,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:50:34,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:34,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:50:34,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:50:34,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:50:34,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:34,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:34,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:50:34,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:35,329 INFO L124 PetriNetUnfolderBase]: 1908/2921 cut-off events. [2024-06-27 19:50:35,330 INFO L125 PetriNetUnfolderBase]: For 6168/6168 co-relation queries the response was YES. [2024-06-27 19:50:35,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8931 conditions, 2921 events. 1908/2921 cut-off events. For 6168/6168 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14103 event pairs, 936 based on Foata normal form. 6/2914 useless extension candidates. Maximal degree in co-relation 8912. Up to 2787 conditions per place. [2024-06-27 19:50:35,348 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 51 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2024-06-27 19:50:35,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 392 flow [2024-06-27 19:50:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:50:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:50:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-27 19:50:35,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-27 19:50:35,350 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 206 flow. Second operand 6 states and 104 transitions. [2024-06-27 19:50:35,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 392 flow [2024-06-27 19:50:35,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 370 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 19:50:35,355 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 240 flow [2024-06-27 19:50:35,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-27 19:50:35,358 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-06-27 19:50:35,358 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 240 flow [2024-06-27 19:50:35,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:35,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:35,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:35,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:50:35,359 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:35,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:35,359 INFO L85 PathProgramCache]: Analyzing trace with hash -590380446, now seen corresponding path program 1 times [2024-06-27 19:50:35,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:35,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990904814] [2024-06-27 19:50:35,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:35,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:36,906 INFO 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 19:50:36,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:36,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990904814] [2024-06-27 19:50:36,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990904814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:36,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:36,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:50:36,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900174061] [2024-06-27 19:50:36,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:36,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:50:36,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:36,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:50:36,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:50:36,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:50:36,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:36,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:36,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:50:36,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:37,885 INFO L124 PetriNetUnfolderBase]: 2216/3274 cut-off events. [2024-06-27 19:50:37,885 INFO L125 PetriNetUnfolderBase]: For 9378/9378 co-relation queries the response was YES. [2024-06-27 19:50:37,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10871 conditions, 3274 events. 2216/3274 cut-off events. For 9378/9378 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15079 event pairs, 1113 based on Foata normal form. 2/3273 useless extension candidates. Maximal degree in co-relation 10851. Up to 3238 conditions per place. [2024-06-27 19:50:37,901 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 56 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2024-06-27 19:50:37,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 70 transitions, 442 flow [2024-06-27 19:50:37,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:50:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:50:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-27 19:50:37,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-27 19:50:37,903 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 240 flow. Second operand 6 states and 100 transitions. [2024-06-27 19:50:37,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 70 transitions, 442 flow [2024-06-27 19:50:37,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 410 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 19:50:37,907 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 266 flow [2024-06-27 19:50:37,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-27 19:50:37,909 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-27 19:50:37,909 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 266 flow [2024-06-27 19:50:37,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:37,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:37,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:37,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:50:37,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:37,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1770981504, now seen corresponding path program 2 times [2024-06-27 19:50:37,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:37,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769809853] [2024-06-27 19:50:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:37,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:39,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:39,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769809853] [2024-06-27 19:50:39,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769809853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:39,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:39,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:50:39,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475275790] [2024-06-27 19:50:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:39,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:50:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:39,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:50:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:50:39,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:50:39,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:39,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:39,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:50:39,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:40,157 INFO L124 PetriNetUnfolderBase]: 2211/3269 cut-off events. [2024-06-27 19:50:40,157 INFO L125 PetriNetUnfolderBase]: For 12136/12148 co-relation queries the response was YES. [2024-06-27 19:50:40,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11500 conditions, 3269 events. 2211/3269 cut-off events. For 12136/12148 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15087 event pairs, 1120 based on Foata normal form. 10/3274 useless extension candidates. Maximal degree in co-relation 11479. Up to 3213 conditions per place. [2024-06-27 19:50:40,174 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 51 selfloop transitions, 16 changer transitions 0/70 dead transitions. [2024-06-27 19:50:40,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 466 flow [2024-06-27 19:50:40,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:50:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:50:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-27 19:50:40,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-27 19:50:40,176 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 266 flow. Second operand 6 states and 99 transitions. [2024-06-27 19:50:40,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 466 flow [2024-06-27 19:50:40,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 432 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 19:50:40,181 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 306 flow [2024-06-27 19:50:40,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-06-27 19:50:40,182 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2024-06-27 19:50:40,182 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 306 flow [2024-06-27 19:50:40,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:40,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:40,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:40,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:50:40,183 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:40,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:40,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1744106578, now seen corresponding path program 1 times [2024-06-27 19:50:40,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:40,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692741455] [2024-06-27 19:50:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:40,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:41,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:41,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692741455] [2024-06-27 19:50:41,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692741455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:41,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:41,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:50:41,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087741040] [2024-06-27 19:50:41,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:41,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:50:41,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:41,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:50:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:50:41,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:50:41,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 306 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:41,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:41,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:50:41,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:42,631 INFO L124 PetriNetUnfolderBase]: 2281/3377 cut-off events. [2024-06-27 19:50:42,631 INFO L125 PetriNetUnfolderBase]: For 15815/15819 co-relation queries the response was YES. [2024-06-27 19:50:42,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12585 conditions, 3377 events. 2281/3377 cut-off events. For 15815/15819 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15573 event pairs, 945 based on Foata normal form. 8/3382 useless extension candidates. Maximal degree in co-relation 12563. Up to 3258 conditions per place. [2024-06-27 19:50:42,648 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 71 selfloop transitions, 24 changer transitions 0/98 dead transitions. [2024-06-27 19:50:42,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 98 transitions, 652 flow [2024-06-27 19:50:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:50:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:50:42,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 19:50:42,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-27 19:50:42,650 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 306 flow. Second operand 8 states and 135 transitions. [2024-06-27 19:50:42,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 98 transitions, 652 flow [2024-06-27 19:50:42,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 98 transitions, 596 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 19:50:42,658 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 421 flow [2024-06-27 19:50:42,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=421, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2024-06-27 19:50:42,659 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-06-27 19:50:42,659 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 421 flow [2024-06-27 19:50:42,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:42,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:42,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:42,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:50:42,660 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:42,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:42,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1122043572, now seen corresponding path program 2 times [2024-06-27 19:50:42,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:42,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582931202] [2024-06-27 19:50:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:42,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:44,258 INFO 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 19:50:44,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:44,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582931202] [2024-06-27 19:50:44,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582931202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:44,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:44,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:50:44,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323098568] [2024-06-27 19:50:44,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:44,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:50:44,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:44,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:50:44,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:50:44,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:50:44,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:44,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:44,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:50:44,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:45,258 INFO L124 PetriNetUnfolderBase]: 2303/3409 cut-off events. [2024-06-27 19:50:45,258 INFO L125 PetriNetUnfolderBase]: For 20126/20132 co-relation queries the response was YES. [2024-06-27 19:50:45,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13820 conditions, 3409 events. 2303/3409 cut-off events. For 20126/20132 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15709 event pairs, 924 based on Foata normal form. 10/3416 useless extension candidates. Maximal degree in co-relation 13794. Up to 3267 conditions per place. [2024-06-27 19:50:45,273 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 69 selfloop transitions, 31 changer transitions 0/103 dead transitions. [2024-06-27 19:50:45,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 775 flow [2024-06-27 19:50:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:50:45,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:50:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 19:50:45,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-27 19:50:45,274 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 421 flow. Second operand 7 states and 119 transitions. [2024-06-27 19:50:45,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 775 flow [2024-06-27 19:50:45,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 103 transitions, 724 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 19:50:45,283 INFO L231 Difference]: Finished difference. Result has 71 places, 77 transitions, 531 flow [2024-06-27 19:50:45,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=531, PETRI_PLACES=71, PETRI_TRANSITIONS=77} [2024-06-27 19:50:45,283 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-06-27 19:50:45,283 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 77 transitions, 531 flow [2024-06-27 19:50:45,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:45,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:45,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:45,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:50:45,284 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:45,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:45,285 INFO L85 PathProgramCache]: Analyzing trace with hash 757017930, now seen corresponding path program 1 times [2024-06-27 19:50:45,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:45,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953432285] [2024-06-27 19:50:45,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:45,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:47,334 INFO 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 19:50:47,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:47,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953432285] [2024-06-27 19:50:47,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953432285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:47,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:47,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:50:47,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245205582] [2024-06-27 19:50:47,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:47,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:50:47,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:47,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:50:47,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:50:47,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:50:47,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 531 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:47,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:47,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:50:47,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:48,246 INFO L124 PetriNetUnfolderBase]: 2325/3441 cut-off events. [2024-06-27 19:50:48,246 INFO L125 PetriNetUnfolderBase]: For 25278/25286 co-relation queries the response was YES. [2024-06-27 19:50:48,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14929 conditions, 3441 events. 2325/3441 cut-off events. For 25278/25286 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15827 event pairs, 920 based on Foata normal form. 12/3450 useless extension candidates. Maximal degree in co-relation 14901. Up to 3371 conditions per place. [2024-06-27 19:50:48,262 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 84 selfloop transitions, 17 changer transitions 0/104 dead transitions. [2024-06-27 19:50:48,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 104 transitions, 843 flow [2024-06-27 19:50:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:50:48,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:50:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 19:50:48,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391156462585034 [2024-06-27 19:50:48,264 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 531 flow. Second operand 7 states and 115 transitions. [2024-06-27 19:50:48,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 104 transitions, 843 flow [2024-06-27 19:50:48,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 777 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 19:50:48,273 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 545 flow [2024-06-27 19:50:48,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-27 19:50:48,274 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-27 19:50:48,274 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 545 flow [2024-06-27 19:50:48,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:48,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:48,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:48,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:50:48,274 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:48,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:48,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1784810766, now seen corresponding path program 3 times [2024-06-27 19:50:48,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:48,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462880295] [2024-06-27 19:50:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:48,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:50,036 INFO 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 19:50:50,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:50,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462880295] [2024-06-27 19:50:50,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462880295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:50,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:50,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:50:50,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587844424] [2024-06-27 19:50:50,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:50,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:50:50,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:50,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:50:50,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:50:50,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:50:50,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 545 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:50,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:50,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:50:50,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:51,036 INFO L124 PetriNetUnfolderBase]: 2363/3497 cut-off events. [2024-06-27 19:50:51,036 INFO L125 PetriNetUnfolderBase]: For 25192/25192 co-relation queries the response was YES. [2024-06-27 19:50:51,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14993 conditions, 3497 events. 2363/3497 cut-off events. For 25192/25192 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16115 event pairs, 910 based on Foata normal form. 4/3498 useless extension candidates. Maximal degree in co-relation 14964. Up to 3306 conditions per place. [2024-06-27 19:50:51,051 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 72 selfloop transitions, 36 changer transitions 0/111 dead transitions. [2024-06-27 19:50:51,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 111 transitions, 953 flow [2024-06-27 19:50:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:50:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:50:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 19:50:51,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41156462585034015 [2024-06-27 19:50:51,053 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 545 flow. Second operand 7 states and 121 transitions. [2024-06-27 19:50:51,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 111 transitions, 953 flow [2024-06-27 19:50:51,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 111 transitions, 899 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 19:50:51,065 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 653 flow [2024-06-27 19:50:51,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2024-06-27 19:50:51,066 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-06-27 19:50:51,066 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 653 flow [2024-06-27 19:50:51,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:51,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:51,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:51,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:50:51,067 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:51,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash 934386600, now seen corresponding path program 2 times [2024-06-27 19:50:51,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:51,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528562965] [2024-06-27 19:50:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:51,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:53,148 INFO 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 19:50:53,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:53,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528562965] [2024-06-27 19:50:53,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528562965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:53,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:53,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:50:53,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006490704] [2024-06-27 19:50:53,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:53,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:50:53,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:53,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:50:53,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:50:53,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:50:53,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 653 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:53,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:53,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:50:53,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:53,961 INFO L124 PetriNetUnfolderBase]: 2396/3545 cut-off events. [2024-06-27 19:50:53,961 INFO L125 PetriNetUnfolderBase]: For 30813/30837 co-relation queries the response was YES. [2024-06-27 19:50:53,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15996 conditions, 3545 events. 2396/3545 cut-off events. For 30813/30837 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16411 event pairs, 823 based on Foata normal form. 22/3560 useless extension candidates. Maximal degree in co-relation 15966. Up to 3350 conditions per place. [2024-06-27 19:50:53,978 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 87 selfloop transitions, 29 changer transitions 0/119 dead transitions. [2024-06-27 19:50:53,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 119 transitions, 1091 flow [2024-06-27 19:50:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:50:53,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:50:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 19:50:53,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-27 19:50:53,979 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 653 flow. Second operand 7 states and 120 transitions. [2024-06-27 19:50:53,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 119 transitions, 1091 flow [2024-06-27 19:50:53,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 1036 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 19:50:53,993 INFO L231 Difference]: Finished difference. Result has 81 places, 92 transitions, 746 flow [2024-06-27 19:50:53,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=746, PETRI_PLACES=81, PETRI_TRANSITIONS=92} [2024-06-27 19:50:53,994 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-06-27 19:50:53,994 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 92 transitions, 746 flow [2024-06-27 19:50:53,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:53,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:53,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:53,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:50:53,995 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:53,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:53,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1117281972, now seen corresponding path program 4 times [2024-06-27 19:50:53,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:53,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438904058] [2024-06-27 19:50:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:53,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:50:55,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:55,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438904058] [2024-06-27 19:50:55,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438904058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:55,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:55,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:50:55,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427355976] [2024-06-27 19:50:55,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:55,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:50:55,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:55,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:50:55,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:50:55,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:50:55,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 92 transitions, 746 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:55,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:55,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:50:55,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:56,405 INFO L124 PetriNetUnfolderBase]: 2386/3534 cut-off events. [2024-06-27 19:50:56,405 INFO L125 PetriNetUnfolderBase]: For 35310/35325 co-relation queries the response was YES. [2024-06-27 19:50:56,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16646 conditions, 3534 events. 2386/3534 cut-off events. For 35310/35325 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16359 event pairs, 925 based on Foata normal form. 10/3531 useless extension candidates. Maximal degree in co-relation 16614. Up to 3304 conditions per place. [2024-06-27 19:50:56,426 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 72 selfloop transitions, 43 changer transitions 0/118 dead transitions. [2024-06-27 19:50:56,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 118 transitions, 1140 flow [2024-06-27 19:50:56,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:50:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:50:56,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 19:50:56,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-27 19:50:56,427 INFO L175 Difference]: Start difference. First operand has 81 places, 92 transitions, 746 flow. Second operand 7 states and 120 transitions. [2024-06-27 19:50:56,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 118 transitions, 1140 flow [2024-06-27 19:50:56,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 118 transitions, 1088 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 19:50:56,447 INFO L231 Difference]: Finished difference. Result has 85 places, 95 transitions, 840 flow [2024-06-27 19:50:56,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=840, PETRI_PLACES=85, PETRI_TRANSITIONS=95} [2024-06-27 19:50:56,447 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-06-27 19:50:56,447 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 95 transitions, 840 flow [2024-06-27 19:50:56,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:56,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:56,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:56,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:50:56,448 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:56,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash 934149450, now seen corresponding path program 3 times [2024-06-27 19:50:56,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:56,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519031550] [2024-06-27 19:50:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:56,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:50:58,349 INFO 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 19:50:58,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:50:58,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519031550] [2024-06-27 19:50:58,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519031550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:50:58,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:50:58,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:50:58,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558267895] [2024-06-27 19:50:58,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:50:58,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:50:58,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:50:58,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:50:58,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:50:58,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:50:58,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 95 transitions, 840 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:58,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:50:58,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:50:58,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:50:59,216 INFO L124 PetriNetUnfolderBase]: 2376/3517 cut-off events. [2024-06-27 19:50:59,216 INFO L125 PetriNetUnfolderBase]: For 40115/40139 co-relation queries the response was YES. [2024-06-27 19:50:59,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17273 conditions, 3517 events. 2376/3517 cut-off events. For 40115/40139 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16289 event pairs, 910 based on Foata normal form. 20/3530 useless extension candidates. Maximal degree in co-relation 17239. Up to 3428 conditions per place. [2024-06-27 19:50:59,233 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 95 selfloop transitions, 22 changer transitions 0/120 dead transitions. [2024-06-27 19:50:59,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 1186 flow [2024-06-27 19:50:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:50:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:50:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-27 19:50:59,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877551020408163 [2024-06-27 19:50:59,235 INFO L175 Difference]: Start difference. First operand has 85 places, 95 transitions, 840 flow. Second operand 7 states and 114 transitions. [2024-06-27 19:50:59,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 1186 flow [2024-06-27 19:50:59,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 120 transitions, 1064 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 19:50:59,255 INFO L231 Difference]: Finished difference. Result has 87 places, 98 transitions, 816 flow [2024-06-27 19:50:59,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=816, PETRI_PLACES=87, PETRI_TRANSITIONS=98} [2024-06-27 19:50:59,256 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-06-27 19:50:59,256 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 98 transitions, 816 flow [2024-06-27 19:50:59,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:50:59,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:50:59,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:50:59,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:50:59,257 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:50:59,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:50:59,258 INFO L85 PathProgramCache]: Analyzing trace with hash 434834212, now seen corresponding path program 1 times [2024-06-27 19:50:59,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:50:59,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696848338] [2024-06-27 19:50:59,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:50:59,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:50:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:00,486 INFO 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 19:51:00,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696848338] [2024-06-27 19:51:00,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696848338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:00,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:00,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:51:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792518784] [2024-06-27 19:51:00,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:00,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:51:00,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:00,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:51:00,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:51:00,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:51:00,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 98 transitions, 816 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 19:51:00,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:00,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:51:00,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:01,194 INFO L124 PetriNetUnfolderBase]: 2076/3196 cut-off events. [2024-06-27 19:51:01,194 INFO L125 PetriNetUnfolderBase]: For 36596/36596 co-relation queries the response was YES. [2024-06-27 19:51:01,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15663 conditions, 3196 events. 2076/3196 cut-off events. For 36596/36596 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 15490 event pairs, 778 based on Foata normal form. 1/3194 useless extension candidates. Maximal degree in co-relation 15628. Up to 3068 conditions per place. [2024-06-27 19:51:01,207 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 97 selfloop transitions, 8 changer transitions 0/109 dead transitions. [2024-06-27 19:51:01,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 109 transitions, 1070 flow [2024-06-27 19:51:01,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:51:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:51:01,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-06-27 19:51:01,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-27 19:51:01,208 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 816 flow. Second operand 5 states and 83 transitions. [2024-06-27 19:51:01,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 109 transitions, 1070 flow [2024-06-27 19:51:01,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 109 transitions, 1000 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 19:51:01,227 INFO L231 Difference]: Finished difference. Result has 87 places, 101 transitions, 794 flow [2024-06-27 19:51:01,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=794, PETRI_PLACES=87, PETRI_TRANSITIONS=101} [2024-06-27 19:51:01,228 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-06-27 19:51:01,228 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 101 transitions, 794 flow [2024-06-27 19:51:01,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 19:51:01,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:01,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:01,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:51:01,229 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:01,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:01,230 INFO L85 PathProgramCache]: Analyzing trace with hash -423701503, now seen corresponding path program 1 times [2024-06-27 19:51:01,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:01,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765357331] [2024-06-27 19:51:01,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:01,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:03,104 INFO 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 19:51:03,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:03,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765357331] [2024-06-27 19:51:03,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765357331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:03,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:03,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:51:03,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950490643] [2024-06-27 19:51:03,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:03,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:51:03,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:51:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:51:03,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:03,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 101 transitions, 794 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:03,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:03,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:03,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:04,206 INFO L124 PetriNetUnfolderBase]: 2368/3505 cut-off events. [2024-06-27 19:51:04,206 INFO L125 PetriNetUnfolderBase]: For 45663/45669 co-relation queries the response was YES. [2024-06-27 19:51:04,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17947 conditions, 3505 events. 2368/3505 cut-off events. For 45663/45669 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16200 event pairs, 903 based on Foata normal form. 8/3510 useless extension candidates. Maximal degree in co-relation 17911. Up to 3349 conditions per place. [2024-06-27 19:51:04,222 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 92 selfloop transitions, 32 changer transitions 0/127 dead transitions. [2024-06-27 19:51:04,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 127 transitions, 1128 flow [2024-06-27 19:51:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:51:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:51:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 19:51:04,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-27 19:51:04,224 INFO L175 Difference]: Start difference. First operand has 87 places, 101 transitions, 794 flow. Second operand 7 states and 119 transitions. [2024-06-27 19:51:04,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 127 transitions, 1128 flow [2024-06-27 19:51:04,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 127 transitions, 1080 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 19:51:04,241 INFO L231 Difference]: Finished difference. Result has 91 places, 101 transitions, 828 flow [2024-06-27 19:51:04,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=828, PETRI_PLACES=91, PETRI_TRANSITIONS=101} [2024-06-27 19:51:04,241 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-27 19:51:04,241 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 101 transitions, 828 flow [2024-06-27 19:51:04,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:04,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:04,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:04,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:51:04,242 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:04,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:04,243 INFO L85 PathProgramCache]: Analyzing trace with hash -506773318, now seen corresponding path program 1 times [2024-06-27 19:51:04,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:04,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137271987] [2024-06-27 19:51:04,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:04,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:06,124 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 19:51:06,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:06,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137271987] [2024-06-27 19:51:06,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137271987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:06,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:06,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:51:06,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583089425] [2024-06-27 19:51:06,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:06,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:51:06,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:06,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:51:06,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:51:06,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:06,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 101 transitions, 828 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:06,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:06,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:06,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:07,259 INFO L124 PetriNetUnfolderBase]: 2412/3569 cut-off events. [2024-06-27 19:51:07,259 INFO L125 PetriNetUnfolderBase]: For 52276/52282 co-relation queries the response was YES. [2024-06-27 19:51:07,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18695 conditions, 3569 events. 2412/3569 cut-off events. For 52276/52282 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16549 event pairs, 887 based on Foata normal form. 14/3580 useless extension candidates. Maximal degree in co-relation 18658. Up to 3371 conditions per place. [2024-06-27 19:51:07,278 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 99 selfloop transitions, 34 changer transitions 0/136 dead transitions. [2024-06-27 19:51:07,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 136 transitions, 1242 flow [2024-06-27 19:51:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 19:51:07,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-27 19:51:07,280 INFO L175 Difference]: Start difference. First operand has 91 places, 101 transitions, 828 flow. Second operand 8 states and 135 transitions. [2024-06-27 19:51:07,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 136 transitions, 1242 flow [2024-06-27 19:51:07,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 136 transitions, 1169 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 19:51:07,301 INFO L231 Difference]: Finished difference. Result has 93 places, 104 transitions, 882 flow [2024-06-27 19:51:07,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=882, PETRI_PLACES=93, PETRI_TRANSITIONS=104} [2024-06-27 19:51:07,301 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-06-27 19:51:07,301 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 104 transitions, 882 flow [2024-06-27 19:51:07,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:07,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:07,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:07,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:51:07,302 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:07,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:07,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1992720390, now seen corresponding path program 2 times [2024-06-27 19:51:07,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:07,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996681864] [2024-06-27 19:51:07,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:07,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:09,143 INFO 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 19:51:09,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:09,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996681864] [2024-06-27 19:51:09,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996681864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:09,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:09,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:51:09,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821923813] [2024-06-27 19:51:09,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:09,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:51:09,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:09,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:51:09,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:51:09,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:09,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 104 transitions, 882 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:09,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:09,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:09,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:10,229 INFO L124 PetriNetUnfolderBase]: 2532/3744 cut-off events. [2024-06-27 19:51:10,229 INFO L125 PetriNetUnfolderBase]: For 61925/61931 co-relation queries the response was YES. [2024-06-27 19:51:10,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20511 conditions, 3744 events. 2532/3744 cut-off events. For 61925/61931 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17460 event pairs, 896 based on Foata normal form. 18/3759 useless extension candidates. Maximal degree in co-relation 20473. Up to 3566 conditions per place. [2024-06-27 19:51:10,252 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 118 selfloop transitions, 26 changer transitions 0/147 dead transitions. [2024-06-27 19:51:10,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 147 transitions, 1490 flow [2024-06-27 19:51:10,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 19:51:10,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-27 19:51:10,258 INFO L175 Difference]: Start difference. First operand has 93 places, 104 transitions, 882 flow. Second operand 8 states and 137 transitions. [2024-06-27 19:51:10,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 147 transitions, 1490 flow [2024-06-27 19:51:10,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 147 transitions, 1389 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 19:51:10,298 INFO L231 Difference]: Finished difference. Result has 96 places, 114 transitions, 1017 flow [2024-06-27 19:51:10,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1017, PETRI_PLACES=96, PETRI_TRANSITIONS=114} [2024-06-27 19:51:10,299 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-06-27 19:51:10,299 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 114 transitions, 1017 flow [2024-06-27 19:51:10,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:10,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:10,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:10,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:51:10,300 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:10,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1992714810, now seen corresponding path program 3 times [2024-06-27 19:51:10,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:10,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215998667] [2024-06-27 19:51:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:10,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:12,525 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 19:51:12,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:12,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215998667] [2024-06-27 19:51:12,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215998667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:12,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:12,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:51:12,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973527900] [2024-06-27 19:51:12,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:12,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:51:12,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:12,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:51:12,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:51:12,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:12,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 114 transitions, 1017 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:12,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:12,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:12,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:13,808 INFO L124 PetriNetUnfolderBase]: 2640/3901 cut-off events. [2024-06-27 19:51:13,808 INFO L125 PetriNetUnfolderBase]: For 72646/72646 co-relation queries the response was YES. [2024-06-27 19:51:13,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22411 conditions, 3901 events. 2640/3901 cut-off events. For 72646/72646 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18275 event pairs, 915 based on Foata normal form. 8/3906 useless extension candidates. Maximal degree in co-relation 22371. Up to 3414 conditions per place. [2024-06-27 19:51:13,830 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 99 selfloop transitions, 52 changer transitions 0/154 dead transitions. [2024-06-27 19:51:13,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 154 transitions, 1607 flow [2024-06-27 19:51:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:13,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 19:51:13,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-27 19:51:13,833 INFO L175 Difference]: Start difference. First operand has 96 places, 114 transitions, 1017 flow. Second operand 8 states and 143 transitions. [2024-06-27 19:51:13,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 154 transitions, 1607 flow [2024-06-27 19:51:13,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 154 transitions, 1537 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 19:51:13,878 INFO L231 Difference]: Finished difference. Result has 101 places, 120 transitions, 1207 flow [2024-06-27 19:51:13,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1207, PETRI_PLACES=101, PETRI_TRANSITIONS=120} [2024-06-27 19:51:13,879 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2024-06-27 19:51:13,879 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 120 transitions, 1207 flow [2024-06-27 19:51:13,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:13,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:13,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:13,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:51:13,880 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:13,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:13,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1098785432, now seen corresponding path program 4 times [2024-06-27 19:51:13,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:13,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267642205] [2024-06-27 19:51:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:13,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:15,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:15,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267642205] [2024-06-27 19:51:15,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267642205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:15,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:15,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:51:15,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371303889] [2024-06-27 19:51:15,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:15,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:51:15,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:51:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:51:15,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:15,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 120 transitions, 1207 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:15,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:15,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:15,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:16,853 INFO L124 PetriNetUnfolderBase]: 2834/4181 cut-off events. [2024-06-27 19:51:16,853 INFO L125 PetriNetUnfolderBase]: For 87252/87276 co-relation queries the response was YES. [2024-06-27 19:51:16,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25499 conditions, 4181 events. 2834/4181 cut-off events. For 87252/87276 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19637 event pairs, 847 based on Foata normal form. 28/4202 useless extension candidates. Maximal degree in co-relation 25456. Up to 3696 conditions per place. [2024-06-27 19:51:16,878 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 118 selfloop transitions, 46 changer transitions 0/167 dead transitions. [2024-06-27 19:51:16,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 167 transitions, 2007 flow [2024-06-27 19:51:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 19:51:16,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-27 19:51:16,881 INFO L175 Difference]: Start difference. First operand has 101 places, 120 transitions, 1207 flow. Second operand 8 states and 143 transitions. [2024-06-27 19:51:16,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 167 transitions, 2007 flow [2024-06-27 19:51:16,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 167 transitions, 1924 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 19:51:16,916 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1425 flow [2024-06-27 19:51:16,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1425, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2024-06-27 19:51:16,917 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2024-06-27 19:51:16,917 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1425 flow [2024-06-27 19:51:16,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:16,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:16,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:16,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:51:16,917 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:16,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1106142662, now seen corresponding path program 5 times [2024-06-27 19:51:16,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:16,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52023972] [2024-06-27 19:51:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:16,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:18,856 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 19:51:18,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:18,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52023972] [2024-06-27 19:51:18,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52023972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:18,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:18,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:51:18,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174663641] [2024-06-27 19:51:18,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:18,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:51:18,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:18,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:51:18,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:51:18,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:18,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1425 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:18,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:18,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:18,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:19,905 INFO L124 PetriNetUnfolderBase]: 2814/4156 cut-off events. [2024-06-27 19:51:19,905 INFO L125 PetriNetUnfolderBase]: For 95112/95127 co-relation queries the response was YES. [2024-06-27 19:51:19,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26183 conditions, 4156 events. 2814/4156 cut-off events. For 95112/95127 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19573 event pairs, 952 based on Foata normal form. 14/4157 useless extension candidates. Maximal degree in co-relation 26138. Up to 3882 conditions per place. [2024-06-27 19:51:19,928 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 111 selfloop transitions, 46 changer transitions 0/160 dead transitions. [2024-06-27 19:51:19,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 160 transitions, 1891 flow [2024-06-27 19:51:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 19:51:19,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-27 19:51:19,930 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1425 flow. Second operand 8 states and 134 transitions. [2024-06-27 19:51:19,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 160 transitions, 1891 flow [2024-06-27 19:51:19,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 160 transitions, 1785 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 19:51:19,968 INFO L231 Difference]: Finished difference. Result has 110 places, 133 transitions, 1493 flow [2024-06-27 19:51:19,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1493, PETRI_PLACES=110, PETRI_TRANSITIONS=133} [2024-06-27 19:51:19,969 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-06-27 19:51:19,969 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 133 transitions, 1493 flow [2024-06-27 19:51:19,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:19,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:19,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:19,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:51:19,970 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:19,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:19,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1106137082, now seen corresponding path program 6 times [2024-06-27 19:51:19,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:19,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161408160] [2024-06-27 19:51:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:19,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:21,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:21,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161408160] [2024-06-27 19:51:21,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161408160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:21,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:21,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:51:21,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054637239] [2024-06-27 19:51:21,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:21,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:51:21,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:21,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:51:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:51:21,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:21,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 133 transitions, 1493 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:21,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:21,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:21,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:22,848 INFO L124 PetriNetUnfolderBase]: 2822/4167 cut-off events. [2024-06-27 19:51:22,849 INFO L125 PetriNetUnfolderBase]: For 101279/101303 co-relation queries the response was YES. [2024-06-27 19:51:22,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26580 conditions, 4167 events. 2822/4167 cut-off events. For 101279/101303 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19681 event pairs, 944 based on Foata normal form. 28/4188 useless extension candidates. Maximal degree in co-relation 26533. Up to 3970 conditions per place. [2024-06-27 19:51:22,874 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 134 selfloop transitions, 31 changer transitions 0/168 dead transitions. [2024-06-27 19:51:22,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 168 transitions, 2081 flow [2024-06-27 19:51:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:22,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:22,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 19:51:22,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-27 19:51:22,876 INFO L175 Difference]: Start difference. First operand has 110 places, 133 transitions, 1493 flow. Second operand 8 states and 136 transitions. [2024-06-27 19:51:22,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 168 transitions, 2081 flow [2024-06-27 19:51:22,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 168 transitions, 1931 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 19:51:22,981 INFO L231 Difference]: Finished difference. Result has 112 places, 137 transitions, 1495 flow [2024-06-27 19:51:22,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1495, PETRI_PLACES=112, PETRI_TRANSITIONS=137} [2024-06-27 19:51:22,981 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 69 predicate places. [2024-06-27 19:51:22,981 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 137 transitions, 1495 flow [2024-06-27 19:51:22,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:22,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:22,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:22,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:51:22,982 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:22,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:22,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1098508385, now seen corresponding path program 1 times [2024-06-27 19:51:22,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:22,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785451265] [2024-06-27 19:51:22,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:22,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:25,868 INFO 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 19:51:25,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:25,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785451265] [2024-06-27 19:51:25,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785451265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:25,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:25,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:51:25,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035651195] [2024-06-27 19:51:25,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:25,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:51:25,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:25,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:51:25,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:51:25,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:51:25,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 1495 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:25,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:25,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:51:25,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:27,025 INFO L124 PetriNetUnfolderBase]: 2517/3833 cut-off events. [2024-06-27 19:51:27,025 INFO L125 PetriNetUnfolderBase]: For 91139/91139 co-relation queries the response was YES. [2024-06-27 19:51:27,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24133 conditions, 3833 events. 2517/3833 cut-off events. For 91139/91139 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 18739 event pairs, 743 based on Foata normal form. 4/3834 useless extension candidates. Maximal degree in co-relation 24085. Up to 3659 conditions per place. [2024-06-27 19:51:27,050 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 147 selfloop transitions, 16 changer transitions 0/167 dead transitions. [2024-06-27 19:51:27,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 167 transitions, 1978 flow [2024-06-27 19:51:27,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:27,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:27,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 19:51:27,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 19:51:27,051 INFO L175 Difference]: Start difference. First operand has 112 places, 137 transitions, 1495 flow. Second operand 8 states and 133 transitions. [2024-06-27 19:51:27,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 167 transitions, 1978 flow [2024-06-27 19:51:27,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 167 transitions, 1814 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 19:51:27,101 INFO L231 Difference]: Finished difference. Result has 114 places, 142 transitions, 1447 flow [2024-06-27 19:51:27,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1447, PETRI_PLACES=114, PETRI_TRANSITIONS=142} [2024-06-27 19:51:27,102 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-06-27 19:51:27,102 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 142 transitions, 1447 flow [2024-06-27 19:51:27,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:27,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:27,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:27,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:51:27,103 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:27,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:27,104 INFO L85 PathProgramCache]: Analyzing trace with hash 625347097, now seen corresponding path program 1 times [2024-06-27 19:51:27,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:27,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088962245] [2024-06-27 19:51:27,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:27,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:28,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:28,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088962245] [2024-06-27 19:51:28,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088962245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:28,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:28,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:51:28,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643904645] [2024-06-27 19:51:28,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:28,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:51:28,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:28,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:51:28,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:51:28,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:51:28,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 142 transitions, 1447 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:28,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:28,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:51:28,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:29,534 INFO L124 PetriNetUnfolderBase]: 2514/3822 cut-off events. [2024-06-27 19:51:29,534 INFO L125 PetriNetUnfolderBase]: For 93915/93915 co-relation queries the response was YES. [2024-06-27 19:51:29,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24071 conditions, 3822 events. 2514/3822 cut-off events. For 93915/93915 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 18580 event pairs, 798 based on Foata normal form. 1/3820 useless extension candidates. Maximal degree in co-relation 24022. Up to 3703 conditions per place. [2024-06-27 19:51:29,559 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 139 selfloop transitions, 11 changer transitions 0/154 dead transitions. [2024-06-27 19:51:29,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 154 transitions, 1799 flow [2024-06-27 19:51:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:51:29,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:51:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-27 19:51:29,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2024-06-27 19:51:29,560 INFO L175 Difference]: Start difference. First operand has 114 places, 142 transitions, 1447 flow. Second operand 6 states and 95 transitions. [2024-06-27 19:51:29,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 154 transitions, 1799 flow [2024-06-27 19:51:29,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 154 transitions, 1728 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 19:51:29,617 INFO L231 Difference]: Finished difference. Result has 115 places, 145 transitions, 1436 flow [2024-06-27 19:51:29,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1436, PETRI_PLACES=115, PETRI_TRANSITIONS=145} [2024-06-27 19:51:29,617 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places. [2024-06-27 19:51:29,617 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 145 transitions, 1436 flow [2024-06-27 19:51:29,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:29,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:29,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:29,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:51:29,618 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:29,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:29,618 INFO L85 PathProgramCache]: Analyzing trace with hash -247165203, now seen corresponding path program 1 times [2024-06-27 19:51:29,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:29,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262327481] [2024-06-27 19:51:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:29,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:31,561 INFO 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 19:51:31,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:31,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262327481] [2024-06-27 19:51:31,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262327481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:31,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:31,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:51:31,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505182270] [2024-06-27 19:51:31,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:31,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:51:31,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:51:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:51:31,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:31,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 145 transitions, 1436 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:31,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:31,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:31,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:32,823 INFO L124 PetriNetUnfolderBase]: 2825/4173 cut-off events. [2024-06-27 19:51:32,823 INFO L125 PetriNetUnfolderBase]: For 115675/115681 co-relation queries the response was YES. [2024-06-27 19:51:32,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27301 conditions, 4173 events. 2825/4173 cut-off events. For 115675/115681 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19608 event pairs, 716 based on Foata normal form. 10/4180 useless extension candidates. Maximal degree in co-relation 27251. Up to 4013 conditions per place. [2024-06-27 19:51:32,850 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 148 selfloop transitions, 27 changer transitions 0/178 dead transitions. [2024-06-27 19:51:32,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 178 transitions, 1938 flow [2024-06-27 19:51:32,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:32,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 19:51:32,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-27 19:51:32,852 INFO L175 Difference]: Start difference. First operand has 115 places, 145 transitions, 1436 flow. Second operand 8 states and 132 transitions. [2024-06-27 19:51:32,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 178 transitions, 1938 flow [2024-06-27 19:51:32,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 178 transitions, 1900 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 19:51:32,904 INFO L231 Difference]: Finished difference. Result has 119 places, 147 transitions, 1517 flow [2024-06-27 19:51:32,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1517, PETRI_PLACES=119, PETRI_TRANSITIONS=147} [2024-06-27 19:51:32,905 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2024-06-27 19:51:32,905 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 147 transitions, 1517 flow [2024-06-27 19:51:32,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:32,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:32,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:32,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:51:32,905 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:32,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:32,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1529206773, now seen corresponding path program 2 times [2024-06-27 19:51:32,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:32,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154168660] [2024-06-27 19:51:32,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:32,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:35,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:35,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:35,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154168660] [2024-06-27 19:51:35,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154168660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:35,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:35,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:51:35,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582079738] [2024-06-27 19:51:35,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:35,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:51:35,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:51:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:51:35,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:35,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 147 transitions, 1517 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:35,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:35,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:35,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:36,452 INFO L124 PetriNetUnfolderBase]: 2842/4200 cut-off events. [2024-06-27 19:51:36,452 INFO L125 PetriNetUnfolderBase]: For 125435/125441 co-relation queries the response was YES. [2024-06-27 19:51:36,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28072 conditions, 4200 events. 2842/4200 cut-off events. For 125435/125441 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19755 event pairs, 872 based on Foata normal form. 10/4207 useless extension candidates. Maximal degree in co-relation 28021. Up to 4016 conditions per place. [2024-06-27 19:51:36,478 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 143 selfloop transitions, 34 changer transitions 0/180 dead transitions. [2024-06-27 19:51:36,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 180 transitions, 2029 flow [2024-06-27 19:51:36,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 19:51:36,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 19:51:36,480 INFO L175 Difference]: Start difference. First operand has 119 places, 147 transitions, 1517 flow. Second operand 8 states and 133 transitions. [2024-06-27 19:51:36,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 180 transitions, 2029 flow [2024-06-27 19:51:36,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 180 transitions, 1928 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 19:51:36,529 INFO L231 Difference]: Finished difference. Result has 121 places, 149 transitions, 1555 flow [2024-06-27 19:51:36,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1555, PETRI_PLACES=121, PETRI_TRANSITIONS=149} [2024-06-27 19:51:36,529 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-06-27 19:51:36,529 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 149 transitions, 1555 flow [2024-06-27 19:51:36,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:36,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:36,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:36,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:51:36,530 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:36,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:36,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1529206897, now seen corresponding path program 1 times [2024-06-27 19:51:36,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:36,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111281742] [2024-06-27 19:51:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:36,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:38,838 INFO 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 19:51:38,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:38,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111281742] [2024-06-27 19:51:38,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111281742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:38,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:38,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:51:38,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301267764] [2024-06-27 19:51:38,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:38,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:51:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:51:38,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:51:38,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:38,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 149 transitions, 1555 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:38,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:38,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:38,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:40,063 INFO L124 PetriNetUnfolderBase]: 2832/4186 cut-off events. [2024-06-27 19:51:40,063 INFO L125 PetriNetUnfolderBase]: For 135079/135085 co-relation queries the response was YES. [2024-06-27 19:51:40,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28280 conditions, 4186 events. 2832/4186 cut-off events. For 135079/135085 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19709 event pairs, 871 based on Foata normal form. 10/4193 useless extension candidates. Maximal degree in co-relation 28228. Up to 3956 conditions per place. [2024-06-27 19:51:40,092 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 143 selfloop transitions, 38 changer transitions 0/184 dead transitions. [2024-06-27 19:51:40,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 184 transitions, 2093 flow [2024-06-27 19:51:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 19:51:40,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-27 19:51:40,094 INFO L175 Difference]: Start difference. First operand has 121 places, 149 transitions, 1555 flow. Second operand 8 states and 135 transitions. [2024-06-27 19:51:40,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 184 transitions, 2093 flow [2024-06-27 19:51:40,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 184 transitions, 1976 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 19:51:40,161 INFO L231 Difference]: Finished difference. Result has 123 places, 152 transitions, 1603 flow [2024-06-27 19:51:40,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1603, PETRI_PLACES=123, PETRI_TRANSITIONS=152} [2024-06-27 19:51:40,162 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 80 predicate places. [2024-06-27 19:51:40,162 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 152 transitions, 1603 flow [2024-06-27 19:51:40,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:40,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:40,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:40,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:51:40,163 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:40,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:40,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1511414023, now seen corresponding path program 1 times [2024-06-27 19:51:40,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:40,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999620692] [2024-06-27 19:51:40,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:40,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:42,533 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 19:51:42,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:42,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999620692] [2024-06-27 19:51:42,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999620692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:42,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:42,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:51:42,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848342600] [2024-06-27 19:51:42,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:42,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:51:42,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:42,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:51:42,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:51:42,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:42,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 152 transitions, 1603 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:42,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:42,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:42,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:43,703 INFO L124 PetriNetUnfolderBase]: 2821/4169 cut-off events. [2024-06-27 19:51:43,703 INFO L125 PetriNetUnfolderBase]: For 141243/141249 co-relation queries the response was YES. [2024-06-27 19:51:43,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28516 conditions, 4169 events. 2821/4169 cut-off events. For 141243/141249 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19560 event pairs, 855 based on Foata normal form. 8/4174 useless extension candidates. Maximal degree in co-relation 28463. Up to 4090 conditions per place. [2024-06-27 19:51:43,731 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 157 selfloop transitions, 22 changer transitions 0/182 dead transitions. [2024-06-27 19:51:43,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 2076 flow [2024-06-27 19:51:43,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 19:51:43,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-27 19:51:43,733 INFO L175 Difference]: Start difference. First operand has 123 places, 152 transitions, 1603 flow. Second operand 8 states and 129 transitions. [2024-06-27 19:51:43,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 2076 flow [2024-06-27 19:51:43,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 182 transitions, 1957 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 19:51:43,804 INFO L231 Difference]: Finished difference. Result has 126 places, 155 transitions, 1571 flow [2024-06-27 19:51:43,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1571, PETRI_PLACES=126, PETRI_TRANSITIONS=155} [2024-06-27 19:51:43,805 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 83 predicate places. [2024-06-27 19:51:43,805 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 155 transitions, 1571 flow [2024-06-27 19:51:43,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:43,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:43,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:43,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:51:43,806 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:43,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1474361273, now seen corresponding path program 3 times [2024-06-27 19:51:43,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:43,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729956906] [2024-06-27 19:51:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:43,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:46,106 INFO 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 19:51:46,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:46,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729956906] [2024-06-27 19:51:46,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729956906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:46,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:46,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:51:46,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214631758] [2024-06-27 19:51:46,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:46,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:51:46,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:46,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:51:46,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:51:46,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:46,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 155 transitions, 1571 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:46,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:46,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:46,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:47,308 INFO L124 PetriNetUnfolderBase]: 2838/4197 cut-off events. [2024-06-27 19:51:47,309 INFO L125 PetriNetUnfolderBase]: For 151530/151530 co-relation queries the response was YES. [2024-06-27 19:51:47,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29059 conditions, 4197 events. 2838/4197 cut-off events. For 151530/151530 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19738 event pairs, 844 based on Foata normal form. 4/4198 useless extension candidates. Maximal degree in co-relation 29004. Up to 3990 conditions per place. [2024-06-27 19:51:47,340 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 144 selfloop transitions, 38 changer transitions 0/185 dead transitions. [2024-06-27 19:51:47,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 185 transitions, 2083 flow [2024-06-27 19:51:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:47,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 19:51:47,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 19:51:47,342 INFO L175 Difference]: Start difference. First operand has 126 places, 155 transitions, 1571 flow. Second operand 8 states and 133 transitions. [2024-06-27 19:51:47,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 185 transitions, 2083 flow [2024-06-27 19:51:47,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 185 transitions, 2017 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 19:51:47,427 INFO L231 Difference]: Finished difference. Result has 129 places, 157 transitions, 1654 flow [2024-06-27 19:51:47,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1654, PETRI_PLACES=129, PETRI_TRANSITIONS=157} [2024-06-27 19:51:47,428 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 86 predicate places. [2024-06-27 19:51:47,428 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 157 transitions, 1654 flow [2024-06-27 19:51:47,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:47,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:47,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:47,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:51:47,429 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:47,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:47,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1251505987, now seen corresponding path program 1 times [2024-06-27 19:51:47,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:47,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541026927] [2024-06-27 19:51:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:47,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:48,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:48,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541026927] [2024-06-27 19:51:48,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541026927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:48,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:48,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:51:48,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222690840] [2024-06-27 19:51:48,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:48,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:51:48,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:48,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:51:48,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:51:48,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:48,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 157 transitions, 1654 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:48,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:48,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:48,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:49,664 INFO L124 PetriNetUnfolderBase]: 2843/4203 cut-off events. [2024-06-27 19:51:49,665 INFO L125 PetriNetUnfolderBase]: For 160709/160715 co-relation queries the response was YES. [2024-06-27 19:51:49,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29647 conditions, 4203 events. 2843/4203 cut-off events. For 160709/160715 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19773 event pairs, 859 based on Foata normal form. 7/4207 useless extension candidates. Maximal degree in co-relation 29591. Up to 4160 conditions per place. [2024-06-27 19:51:49,696 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 159 selfloop transitions, 14 changer transitions 0/176 dead transitions. [2024-06-27 19:51:49,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 176 transitions, 2084 flow [2024-06-27 19:51:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:51:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:51:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-27 19:51:49,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-27 19:51:49,697 INFO L175 Difference]: Start difference. First operand has 129 places, 157 transitions, 1654 flow. Second operand 6 states and 96 transitions. [2024-06-27 19:51:49,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 176 transitions, 2084 flow [2024-06-27 19:51:49,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 176 transitions, 1953 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 19:51:49,776 INFO L231 Difference]: Finished difference. Result has 129 places, 160 transitions, 1594 flow [2024-06-27 19:51:49,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1594, PETRI_PLACES=129, PETRI_TRANSITIONS=160} [2024-06-27 19:51:49,776 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 86 predicate places. [2024-06-27 19:51:49,776 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 160 transitions, 1594 flow [2024-06-27 19:51:49,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:49,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:49,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:49,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:51:49,777 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:49,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:49,777 INFO L85 PathProgramCache]: Analyzing trace with hash 69496841, now seen corresponding path program 2 times [2024-06-27 19:51:49,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:49,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331217039] [2024-06-27 19:51:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:49,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:52,613 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 19:51:52,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:52,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331217039] [2024-06-27 19:51:52,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331217039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:52,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:52,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:51:52,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070764123] [2024-06-27 19:51:52,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:52,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:51:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:52,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:51:52,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:51:52,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:52,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 160 transitions, 1594 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:52,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:52,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:52,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:53,858 INFO L124 PetriNetUnfolderBase]: 2832/4187 cut-off events. [2024-06-27 19:51:53,858 INFO L125 PetriNetUnfolderBase]: For 167140/167164 co-relation queries the response was YES. [2024-06-27 19:51:53,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29870 conditions, 4187 events. 2832/4187 cut-off events. For 167140/167164 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19715 event pairs, 857 based on Foata normal form. 18/4198 useless extension candidates. Maximal degree in co-relation 29813. Up to 4089 conditions per place. [2024-06-27 19:51:53,886 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 161 selfloop transitions, 28 changer transitions 0/192 dead transitions. [2024-06-27 19:51:53,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 192 transitions, 2089 flow [2024-06-27 19:51:53,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:51:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:51:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-27 19:51:53,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-27 19:51:53,887 INFO L175 Difference]: Start difference. First operand has 129 places, 160 transitions, 1594 flow. Second operand 9 states and 141 transitions. [2024-06-27 19:51:53,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 192 transitions, 2089 flow [2024-06-27 19:51:53,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 192 transitions, 2020 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 19:51:53,949 INFO L231 Difference]: Finished difference. Result has 135 places, 163 transitions, 1618 flow [2024-06-27 19:51:53,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1618, PETRI_PLACES=135, PETRI_TRANSITIONS=163} [2024-06-27 19:51:53,950 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 92 predicate places. [2024-06-27 19:51:53,950 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 163 transitions, 1618 flow [2024-06-27 19:51:53,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:53,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:53,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:53,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:51:53,950 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:53,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash 69312143, now seen corresponding path program 4 times [2024-06-27 19:51:53,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:53,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485366636] [2024-06-27 19:51:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:53,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:56,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:56,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485366636] [2024-06-27 19:51:56,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485366636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:56,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:56,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:51:56,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773555921] [2024-06-27 19:51:56,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:56,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:51:56,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:56,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:51:56,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:51:56,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:56,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 163 transitions, 1618 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:56,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:56,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:56,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:57,412 INFO L124 PetriNetUnfolderBase]: 2824/4178 cut-off events. [2024-06-27 19:51:57,412 INFO L125 PetriNetUnfolderBase]: For 175910/175925 co-relation queries the response was YES. [2024-06-27 19:51:57,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30181 conditions, 4178 events. 2824/4178 cut-off events. For 175910/175925 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19629 event pairs, 829 based on Foata normal form. 10/4175 useless extension candidates. Maximal degree in co-relation 30122. Up to 3932 conditions per place. [2024-06-27 19:51:57,442 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 143 selfloop transitions, 45 changer transitions 0/191 dead transitions. [2024-06-27 19:51:57,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 191 transitions, 2140 flow [2024-06-27 19:51:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:51:57,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:51:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 19:51:57,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-27 19:51:57,443 INFO L175 Difference]: Start difference. First operand has 135 places, 163 transitions, 1618 flow. Second operand 8 states and 132 transitions. [2024-06-27 19:51:57,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 191 transitions, 2140 flow [2024-06-27 19:51:57,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 191 transitions, 2052 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 19:51:57,517 INFO L231 Difference]: Finished difference. Result has 136 places, 165 transitions, 1697 flow [2024-06-27 19:51:57,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1697, PETRI_PLACES=136, PETRI_TRANSITIONS=165} [2024-06-27 19:51:57,517 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-27 19:51:57,518 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 165 transitions, 1697 flow [2024-06-27 19:51:57,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:57,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:57,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:57,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:51:57,518 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:57,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:57,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2089089729, now seen corresponding path program 2 times [2024-06-27 19:51:57,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:57,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155496262] [2024-06-27 19:51:57,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:57,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:51:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:51:58,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:51:58,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155496262] [2024-06-27 19:51:58,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155496262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:51:58,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:51:58,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:51:58,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102812878] [2024-06-27 19:51:58,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:51:58,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:51:58,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:51:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:51:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:51:58,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:51:58,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 165 transitions, 1697 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:58,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:51:58,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:51:58,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:51:59,671 INFO L124 PetriNetUnfolderBase]: 2821/4171 cut-off events. [2024-06-27 19:51:59,671 INFO L125 PetriNetUnfolderBase]: For 183596/183620 co-relation queries the response was YES. [2024-06-27 19:51:59,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30661 conditions, 4171 events. 2821/4171 cut-off events. For 183596/183620 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19568 event pairs, 855 based on Foata normal form. 17/4181 useless extension candidates. Maximal degree in co-relation 30601. Up to 4121 conditions per place. [2024-06-27 19:51:59,701 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 157 selfloop transitions, 19 changer transitions 0/179 dead transitions. [2024-06-27 19:51:59,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 179 transitions, 2123 flow [2024-06-27 19:51:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:51:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:51:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-27 19:51:59,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-06-27 19:51:59,702 INFO L175 Difference]: Start difference. First operand has 136 places, 165 transitions, 1697 flow. Second operand 6 states and 92 transitions. [2024-06-27 19:51:59,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 179 transitions, 2123 flow [2024-06-27 19:51:59,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 179 transitions, 1974 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 19:51:59,780 INFO L231 Difference]: Finished difference. Result has 136 places, 168 transitions, 1634 flow [2024-06-27 19:51:59,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1634, PETRI_PLACES=136, PETRI_TRANSITIONS=168} [2024-06-27 19:51:59,780 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-27 19:51:59,781 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 168 transitions, 1634 flow [2024-06-27 19:51:59,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:51:59,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:51:59,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:51:59,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:51:59,781 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:51:59,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:51:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1257225859, now seen corresponding path program 1 times [2024-06-27 19:51:59,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:51:59,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786438413] [2024-06-27 19:51:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:51:59,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:51:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:01,083 INFO 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 19:52:01,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:01,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786438413] [2024-06-27 19:52:01,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786438413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:01,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:01,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:52:01,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498066842] [2024-06-27 19:52:01,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:01,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:52:01,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:01,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:52:01,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:52:01,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:52:01,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 168 transitions, 1634 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:01,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:01,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:52:01,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:01,903 INFO L124 PetriNetUnfolderBase]: 2532/3842 cut-off events. [2024-06-27 19:52:01,903 INFO L125 PetriNetUnfolderBase]: For 163627/163627 co-relation queries the response was YES. [2024-06-27 19:52:01,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27841 conditions, 3842 events. 2532/3842 cut-off events. For 163627/163627 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18660 event pairs, 736 based on Foata normal form. 1/3840 useless extension candidates. Maximal degree in co-relation 27780. Up to 3728 conditions per place. [2024-06-27 19:52:01,932 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 168 selfloop transitions, 11 changer transitions 0/183 dead transitions. [2024-06-27 19:52:01,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 183 transitions, 2072 flow [2024-06-27 19:52:01,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:52:01,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:52:01,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-27 19:52:01,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:52:01,933 INFO L175 Difference]: Start difference. First operand has 136 places, 168 transitions, 1634 flow. Second operand 6 states and 98 transitions. [2024-06-27 19:52:01,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 183 transitions, 2072 flow [2024-06-27 19:52:02,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 183 transitions, 2008 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 19:52:02,008 INFO L231 Difference]: Finished difference. Result has 138 places, 171 transitions, 1648 flow [2024-06-27 19:52:02,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1648, PETRI_PLACES=138, PETRI_TRANSITIONS=171} [2024-06-27 19:52:02,009 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2024-06-27 19:52:02,009 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 171 transitions, 1648 flow [2024-06-27 19:52:02,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:02,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:02,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:02,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:52:02,009 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:02,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:02,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2089083777, now seen corresponding path program 2 times [2024-06-27 19:52:02,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:02,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744465014] [2024-06-27 19:52:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:02,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:03,349 INFO 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 19:52:03,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:03,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744465014] [2024-06-27 19:52:03,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744465014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:03,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:03,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:52:03,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601125027] [2024-06-27 19:52:03,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:03,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:52:03,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:03,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:52:03,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:52:03,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:52:03,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 171 transitions, 1648 flow. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:03,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:03,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:52:03,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:04,170 INFO L124 PetriNetUnfolderBase]: 2529/3838 cut-off events. [2024-06-27 19:52:04,171 INFO L125 PetriNetUnfolderBase]: For 169326/169326 co-relation queries the response was YES. [2024-06-27 19:52:04,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28278 conditions, 3838 events. 2529/3838 cut-off events. For 169326/169326 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18669 event pairs, 736 based on Foata normal form. 1/3836 useless extension candidates. Maximal degree in co-relation 28216. Up to 3730 conditions per place. [2024-06-27 19:52:04,200 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 168 selfloop transitions, 11 changer transitions 0/183 dead transitions. [2024-06-27 19:52:04,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 183 transitions, 2082 flow [2024-06-27 19:52:04,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:52:04,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:52:04,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-27 19:52:04,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2024-06-27 19:52:04,201 INFO L175 Difference]: Start difference. First operand has 138 places, 171 transitions, 1648 flow. Second operand 6 states and 95 transitions. [2024-06-27 19:52:04,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 183 transitions, 2082 flow [2024-06-27 19:52:04,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 183 transitions, 2026 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 19:52:04,285 INFO L231 Difference]: Finished difference. Result has 140 places, 174 transitions, 1676 flow [2024-06-27 19:52:04,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1676, PETRI_PLACES=140, PETRI_TRANSITIONS=174} [2024-06-27 19:52:04,286 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 97 predicate places. [2024-06-27 19:52:04,286 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 174 transitions, 1676 flow [2024-06-27 19:52:04,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:04,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:04,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:04,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:52:04,287 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:04,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:04,287 INFO L85 PathProgramCache]: Analyzing trace with hash 842910175, now seen corresponding path program 1 times [2024-06-27 19:52:04,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:04,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951714203] [2024-06-27 19:52:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:04,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:06,574 INFO 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 19:52:06,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:06,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951714203] [2024-06-27 19:52:06,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951714203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:06,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:06,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:52:06,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674614277] [2024-06-27 19:52:06,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:06,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:52:06,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:06,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:52:06,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:52:06,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:06,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 174 transitions, 1676 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:06,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:06,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:06,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:07,895 INFO L124 PetriNetUnfolderBase]: 2857/4227 cut-off events. [2024-06-27 19:52:07,896 INFO L125 PetriNetUnfolderBase]: For 219046/219052 co-relation queries the response was YES. [2024-06-27 19:52:07,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32535 conditions, 4227 events. 2857/4227 cut-off events. For 219046/219052 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 20028 event pairs, 669 based on Foata normal form. 14/4238 useless extension candidates. Maximal degree in co-relation 32472. Up to 4021 conditions per place. [2024-06-27 19:52:07,929 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 181 selfloop transitions, 29 changer transitions 0/213 dead transitions. [2024-06-27 19:52:07,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 213 transitions, 2284 flow [2024-06-27 19:52:07,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:52:07,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:52:07,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 19:52:07,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:52:07,931 INFO L175 Difference]: Start difference. First operand has 140 places, 174 transitions, 1676 flow. Second operand 9 states and 147 transitions. [2024-06-27 19:52:07,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 213 transitions, 2284 flow [2024-06-27 19:52:08,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 213 transitions, 2222 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 19:52:08,038 INFO L231 Difference]: Finished difference. Result has 145 places, 176 transitions, 1751 flow [2024-06-27 19:52:08,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1751, PETRI_PLACES=145, PETRI_TRANSITIONS=176} [2024-06-27 19:52:08,038 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 102 predicate places. [2024-06-27 19:52:08,038 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 176 transitions, 1751 flow [2024-06-27 19:52:08,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:08,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:08,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:08,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:52:08,039 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:08,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:08,039 INFO L85 PathProgramCache]: Analyzing trace with hash 844787845, now seen corresponding path program 2 times [2024-06-27 19:52:08,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:08,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158471621] [2024-06-27 19:52:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:08,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:10,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:10,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158471621] [2024-06-27 19:52:10,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158471621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:10,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:10,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:52:10,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210727010] [2024-06-27 19:52:10,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:10,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:52:10,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:10,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:52:10,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:52:10,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:10,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 176 transitions, 1751 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:10,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:10,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:10,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:11,834 INFO L124 PetriNetUnfolderBase]: 2891/4281 cut-off events. [2024-06-27 19:52:11,835 INFO L125 PetriNetUnfolderBase]: For 233220/233226 co-relation queries the response was YES. [2024-06-27 19:52:11,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33550 conditions, 4281 events. 2891/4281 cut-off events. For 233220/233226 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 20364 event pairs, 821 based on Foata normal form. 14/4292 useless extension candidates. Maximal degree in co-relation 33486. Up to 3995 conditions per place. [2024-06-27 19:52:11,867 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 173 selfloop transitions, 40 changer transitions 0/216 dead transitions. [2024-06-27 19:52:11,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 216 transitions, 2381 flow [2024-06-27 19:52:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:52:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:52:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 19:52:11,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-27 19:52:11,869 INFO L175 Difference]: Start difference. First operand has 145 places, 176 transitions, 1751 flow. Second operand 9 states and 150 transitions. [2024-06-27 19:52:11,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 216 transitions, 2381 flow [2024-06-27 19:52:11,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 216 transitions, 2262 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 19:52:11,975 INFO L231 Difference]: Finished difference. Result has 147 places, 178 transitions, 1796 flow [2024-06-27 19:52:11,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1796, PETRI_PLACES=147, PETRI_TRANSITIONS=178} [2024-06-27 19:52:11,975 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2024-06-27 19:52:11,975 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 178 transitions, 1796 flow [2024-06-27 19:52:11,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:11,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:11,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:11,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:52:11,976 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:11,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:11,976 INFO L85 PathProgramCache]: Analyzing trace with hash 844784125, now seen corresponding path program 3 times [2024-06-27 19:52:11,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:11,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891637960] [2024-06-27 19:52:11,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:11,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:14,461 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 19:52:14,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:14,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891637960] [2024-06-27 19:52:14,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891637960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:14,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:14,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:52:14,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777601542] [2024-06-27 19:52:14,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:14,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:52:14,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:14,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:52:14,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:52:14,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:14,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 178 transitions, 1796 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:14,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:14,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:14,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:15,834 INFO L124 PetriNetUnfolderBase]: 2925/4335 cut-off events. [2024-06-27 19:52:15,834 INFO L125 PetriNetUnfolderBase]: For 249887/249893 co-relation queries the response was YES. [2024-06-27 19:52:15,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34319 conditions, 4335 events. 2925/4335 cut-off events. For 249887/249893 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20710 event pairs, 835 based on Foata normal form. 14/4346 useless extension candidates. Maximal degree in co-relation 34254. Up to 4105 conditions per place. [2024-06-27 19:52:15,868 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 178 selfloop transitions, 36 changer transitions 0/217 dead transitions. [2024-06-27 19:52:15,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 217 transitions, 2422 flow [2024-06-27 19:52:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:52:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:52:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 19:52:15,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-06-27 19:52:15,869 INFO L175 Difference]: Start difference. First operand has 147 places, 178 transitions, 1796 flow. Second operand 9 states and 148 transitions. [2024-06-27 19:52:15,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 217 transitions, 2422 flow [2024-06-27 19:52:15,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 217 transitions, 2278 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 19:52:15,988 INFO L231 Difference]: Finished difference. Result has 149 places, 180 transitions, 1811 flow [2024-06-27 19:52:15,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1811, PETRI_PLACES=149, PETRI_TRANSITIONS=180} [2024-06-27 19:52:15,989 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 106 predicate places. [2024-06-27 19:52:15,989 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 180 transitions, 1811 flow [2024-06-27 19:52:15,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:15,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:15,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:15,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:52:15,989 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:15,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:15,990 INFO L85 PathProgramCache]: Analyzing trace with hash 164499675, now seen corresponding path program 1 times [2024-06-27 19:52:15,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:15,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183143646] [2024-06-27 19:52:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:15,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:18,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:18,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183143646] [2024-06-27 19:52:18,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183143646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:18,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:18,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:52:18,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699170526] [2024-06-27 19:52:18,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:18,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:52:18,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:18,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:52:18,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:52:18,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:18,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 180 transitions, 1811 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:18,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:18,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:18,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:20,052 INFO L124 PetriNetUnfolderBase]: 2947/4367 cut-off events. [2024-06-27 19:52:20,052 INFO L125 PetriNetUnfolderBase]: For 258570/258576 co-relation queries the response was YES. [2024-06-27 19:52:20,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34760 conditions, 4367 events. 2947/4367 cut-off events. For 258570/258576 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 20902 event pairs, 835 based on Foata normal form. 10/4374 useless extension candidates. Maximal degree in co-relation 34694. Up to 4146 conditions per place. [2024-06-27 19:52:20,089 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 184 selfloop transitions, 40 changer transitions 0/227 dead transitions. [2024-06-27 19:52:20,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 227 transitions, 2488 flow [2024-06-27 19:52:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:52:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:52:20,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 19:52:20,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-27 19:52:20,090 INFO L175 Difference]: Start difference. First operand has 149 places, 180 transitions, 1811 flow. Second operand 10 states and 164 transitions. [2024-06-27 19:52:20,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 227 transitions, 2488 flow [2024-06-27 19:52:20,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 227 transitions, 2347 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 19:52:20,213 INFO L231 Difference]: Finished difference. Result has 153 places, 186 transitions, 1866 flow [2024-06-27 19:52:20,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1866, PETRI_PLACES=153, PETRI_TRANSITIONS=186} [2024-06-27 19:52:20,214 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2024-06-27 19:52:20,214 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 186 transitions, 1866 flow [2024-06-27 19:52:20,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:20,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:20,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:20,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:52:20,215 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:20,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:20,215 INFO L85 PathProgramCache]: Analyzing trace with hash 141652833, now seen corresponding path program 1 times [2024-06-27 19:52:20,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:20,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430321611] [2024-06-27 19:52:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:20,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:21,579 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 19:52:21,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:21,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430321611] [2024-06-27 19:52:21,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430321611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:21,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:21,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:52:21,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114087779] [2024-06-27 19:52:21,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:21,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:52:21,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:21,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:52:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:52:21,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:21,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 186 transitions, 1866 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:52:21,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:21,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:21,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:22,787 INFO L124 PetriNetUnfolderBase]: 2957/4381 cut-off events. [2024-06-27 19:52:22,787 INFO L125 PetriNetUnfolderBase]: For 266893/266899 co-relation queries the response was YES. [2024-06-27 19:52:22,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35171 conditions, 4381 events. 2957/4381 cut-off events. For 266893/266899 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 21020 event pairs, 855 based on Foata normal form. 8/4386 useless extension candidates. Maximal degree in co-relation 35103. Up to 4266 conditions per place. [2024-06-27 19:52:22,819 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 183 selfloop transitions, 26 changer transitions 0/212 dead transitions. [2024-06-27 19:52:22,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 212 transitions, 2410 flow [2024-06-27 19:52:22,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:52:22,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:52:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 19:52:22,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391156462585034 [2024-06-27 19:52:22,820 INFO L175 Difference]: Start difference. First operand has 153 places, 186 transitions, 1866 flow. Second operand 7 states and 115 transitions. [2024-06-27 19:52:22,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 212 transitions, 2410 flow [2024-06-27 19:52:22,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 212 transitions, 2278 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 19:52:22,931 INFO L231 Difference]: Finished difference. Result has 153 places, 189 transitions, 1852 flow [2024-06-27 19:52:22,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1852, PETRI_PLACES=153, PETRI_TRANSITIONS=189} [2024-06-27 19:52:22,932 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2024-06-27 19:52:22,932 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 189 transitions, 1852 flow [2024-06-27 19:52:22,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:52:22,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:22,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:22,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:52:22,932 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:22,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:22,933 INFO L85 PathProgramCache]: Analyzing trace with hash -391019705, now seen corresponding path program 4 times [2024-06-27 19:52:22,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:22,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203101233] [2024-06-27 19:52:22,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:22,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:25,448 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 19:52:25,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:25,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203101233] [2024-06-27 19:52:25,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203101233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:25,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:25,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:52:25,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120718545] [2024-06-27 19:52:25,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:25,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:52:25,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:25,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:52:25,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:52:25,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:25,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 189 transitions, 1852 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:25,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:25,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:25,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:26,812 INFO L124 PetriNetUnfolderBase]: 3066/4560 cut-off events. [2024-06-27 19:52:26,812 INFO L125 PetriNetUnfolderBase]: For 305565/305571 co-relation queries the response was YES. [2024-06-27 19:52:26,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37019 conditions, 4560 events. 3066/4560 cut-off events. For 305565/305571 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 22222 event pairs, 858 based on Foata normal form. 34/4591 useless extension candidates. Maximal degree in co-relation 36950. Up to 4222 conditions per place. [2024-06-27 19:52:26,846 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 200 selfloop transitions, 30 changer transitions 0/233 dead transitions. [2024-06-27 19:52:26,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 233 transitions, 2712 flow [2024-06-27 19:52:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:52:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:52:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 19:52:26,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-27 19:52:26,848 INFO L175 Difference]: Start difference. First operand has 153 places, 189 transitions, 1852 flow. Second operand 9 states and 156 transitions. [2024-06-27 19:52:26,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 233 transitions, 2712 flow [2024-06-27 19:52:26,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 233 transitions, 2624 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 19:52:26,971 INFO L231 Difference]: Finished difference. Result has 157 places, 191 transitions, 1916 flow [2024-06-27 19:52:26,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1916, PETRI_PLACES=157, PETRI_TRANSITIONS=191} [2024-06-27 19:52:26,971 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-27 19:52:26,972 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 191 transitions, 1916 flow [2024-06-27 19:52:26,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:26,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:26,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:26,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:52:26,972 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:26,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:26,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1533923365, now seen corresponding path program 2 times [2024-06-27 19:52:26,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:26,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774946734] [2024-06-27 19:52:26,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:26,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:30,335 INFO 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 19:52:30,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:30,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774946734] [2024-06-27 19:52:30,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774946734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:30,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:30,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:52:30,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121682384] [2024-06-27 19:52:30,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:30,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:52:30,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:30,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:52:30,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:52:30,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:30,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 191 transitions, 1916 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:30,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:30,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:30,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:31,996 INFO L124 PetriNetUnfolderBase]: 3194/4746 cut-off events. [2024-06-27 19:52:31,997 INFO L125 PetriNetUnfolderBase]: For 305688/305688 co-relation queries the response was YES. [2024-06-27 19:52:32,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38691 conditions, 4746 events. 3194/4746 cut-off events. For 305688/305688 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 23205 event pairs, 874 based on Foata normal form. 4/4745 useless extension candidates. Maximal degree in co-relation 38621. Up to 4594 conditions per place. [2024-06-27 19:52:32,031 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 213 selfloop transitions, 35 changer transitions 0/251 dead transitions. [2024-06-27 19:52:32,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 251 transitions, 2844 flow [2024-06-27 19:52:32,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:52:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:52:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 19:52:32,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3658008658008658 [2024-06-27 19:52:32,032 INFO L175 Difference]: Start difference. First operand has 157 places, 191 transitions, 1916 flow. Second operand 11 states and 169 transitions. [2024-06-27 19:52:32,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 251 transitions, 2844 flow [2024-06-27 19:52:32,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 251 transitions, 2698 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 19:52:32,164 INFO L231 Difference]: Finished difference. Result has 166 places, 216 transitions, 2231 flow [2024-06-27 19:52:32,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2231, PETRI_PLACES=166, PETRI_TRANSITIONS=216} [2024-06-27 19:52:32,165 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 123 predicate places. [2024-06-27 19:52:32,165 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 216 transitions, 2231 flow [2024-06-27 19:52:32,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:32,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:32,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:32,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:52:32,166 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:32,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:32,166 INFO L85 PathProgramCache]: Analyzing trace with hash -556591453, now seen corresponding path program 5 times [2024-06-27 19:52:32,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:32,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157740642] [2024-06-27 19:52:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:32,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:34,809 INFO 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 19:52:34,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157740642] [2024-06-27 19:52:34,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157740642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:34,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:34,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:52:34,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342492208] [2024-06-27 19:52:34,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:34,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:52:34,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:52:34,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:52:34,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:34,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 216 transitions, 2231 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:34,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:34,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:34,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:36,227 INFO L124 PetriNetUnfolderBase]: 3228/4801 cut-off events. [2024-06-27 19:52:36,227 INFO L125 PetriNetUnfolderBase]: For 317166/317166 co-relation queries the response was YES. [2024-06-27 19:52:36,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39339 conditions, 4801 events. 3228/4801 cut-off events. For 317166/317166 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 23585 event pairs, 859 based on Foata normal form. 8/4806 useless extension candidates. Maximal degree in co-relation 39263. Up to 4503 conditions per place. [2024-06-27 19:52:36,266 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 202 selfloop transitions, 47 changer transitions 0/252 dead transitions. [2024-06-27 19:52:36,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 252 transitions, 2935 flow [2024-06-27 19:52:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:52:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:52:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 19:52:36,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-27 19:52:36,268 INFO L175 Difference]: Start difference. First operand has 166 places, 216 transitions, 2231 flow. Second operand 9 states and 150 transitions. [2024-06-27 19:52:36,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 252 transitions, 2935 flow [2024-06-27 19:52:36,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 252 transitions, 2885 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-27 19:52:36,435 INFO L231 Difference]: Finished difference. Result has 174 places, 218 transitions, 2370 flow [2024-06-27 19:52:36,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2181, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2370, PETRI_PLACES=174, PETRI_TRANSITIONS=218} [2024-06-27 19:52:36,436 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 131 predicate places. [2024-06-27 19:52:36,436 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 218 transitions, 2370 flow [2024-06-27 19:52:36,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:36,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:36,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:36,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:52:36,437 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:36,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:36,437 INFO L85 PathProgramCache]: Analyzing trace with hash -550877161, now seen corresponding path program 3 times [2024-06-27 19:52:36,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:36,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189859236] [2024-06-27 19:52:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:36,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:40,086 INFO 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 19:52:40,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:40,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189859236] [2024-06-27 19:52:40,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189859236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:40,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:40,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:52:40,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251742449] [2024-06-27 19:52:40,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:40,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:52:40,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:40,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:52:40,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:52:40,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:40,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 218 transitions, 2370 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:40,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:40,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:40,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:41,856 INFO L124 PetriNetUnfolderBase]: 3250/4832 cut-off events. [2024-06-27 19:52:41,856 INFO L125 PetriNetUnfolderBase]: For 329642/329642 co-relation queries the response was YES. [2024-06-27 19:52:41,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40194 conditions, 4832 events. 3250/4832 cut-off events. For 329642/329642 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 23810 event pairs, 884 based on Foata normal form. 4/4831 useless extension candidates. Maximal degree in co-relation 40115. Up to 4680 conditions per place. [2024-06-27 19:52:41,900 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 219 selfloop transitions, 37 changer transitions 0/259 dead transitions. [2024-06-27 19:52:41,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 259 transitions, 3090 flow [2024-06-27 19:52:41,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:52:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:52:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 19:52:41,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36796536796536794 [2024-06-27 19:52:41,902 INFO L175 Difference]: Start difference. First operand has 174 places, 218 transitions, 2370 flow. Second operand 11 states and 170 transitions. [2024-06-27 19:52:41,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 259 transitions, 3090 flow [2024-06-27 19:52:42,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 259 transitions, 2919 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 19:52:42,087 INFO L231 Difference]: Finished difference. Result has 179 places, 224 transitions, 2391 flow [2024-06-27 19:52:42,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2391, PETRI_PLACES=179, PETRI_TRANSITIONS=224} [2024-06-27 19:52:42,087 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 136 predicate places. [2024-06-27 19:52:42,088 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 224 transitions, 2391 flow [2024-06-27 19:52:42,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:42,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:42,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:42,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:52:42,088 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:42,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:42,089 INFO L85 PathProgramCache]: Analyzing trace with hash -550869442, now seen corresponding path program 1 times [2024-06-27 19:52:42,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:42,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575523348] [2024-06-27 19:52:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:42,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:44,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:44,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575523348] [2024-06-27 19:52:44,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575523348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:44,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:44,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:52:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397262178] [2024-06-27 19:52:44,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:44,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:52:44,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:52:44,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:52:44,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:44,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 224 transitions, 2391 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:44,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:44,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:44,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:46,166 INFO L124 PetriNetUnfolderBase]: 3267/4860 cut-off events. [2024-06-27 19:52:46,166 INFO L125 PetriNetUnfolderBase]: For 340193/340193 co-relation queries the response was YES. [2024-06-27 19:52:46,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40415 conditions, 4860 events. 3267/4860 cut-off events. For 340193/340193 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 23942 event pairs, 900 based on Foata normal form. 4/4861 useless extension candidates. Maximal degree in co-relation 40334. Up to 4730 conditions per place. [2024-06-27 19:52:46,212 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 216 selfloop transitions, 37 changer transitions 0/256 dead transitions. [2024-06-27 19:52:46,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 256 transitions, 3063 flow [2024-06-27 19:52:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:52:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:52:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 19:52:46,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783068783068783 [2024-06-27 19:52:46,215 INFO L175 Difference]: Start difference. First operand has 179 places, 224 transitions, 2391 flow. Second operand 9 states and 143 transitions. [2024-06-27 19:52:46,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 256 transitions, 3063 flow [2024-06-27 19:52:46,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 256 transitions, 2967 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 19:52:46,461 INFO L231 Difference]: Finished difference. Result has 182 places, 226 transitions, 2454 flow [2024-06-27 19:52:46,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2454, PETRI_PLACES=182, PETRI_TRANSITIONS=226} [2024-06-27 19:52:46,462 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 139 predicate places. [2024-06-27 19:52:46,462 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 226 transitions, 2454 flow [2024-06-27 19:52:46,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:46,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:46,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:46,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:52:46,462 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:46,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:46,463 INFO L85 PathProgramCache]: Analyzing trace with hash 210534909, now seen corresponding path program 6 times [2024-06-27 19:52:46,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:46,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014386881] [2024-06-27 19:52:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:46,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:52:49,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:49,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014386881] [2024-06-27 19:52:49,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014386881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:49,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:49,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:52:49,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503654735] [2024-06-27 19:52:49,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:49,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:52:49,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:49,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:52:49,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:52:49,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:49,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 226 transitions, 2454 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:49,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:49,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:49,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:50,648 INFO L124 PetriNetUnfolderBase]: 3301/4914 cut-off events. [2024-06-27 19:52:50,649 INFO L125 PetriNetUnfolderBase]: For 362867/362867 co-relation queries the response was YES. [2024-06-27 19:52:50,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41367 conditions, 4914 events. 3301/4914 cut-off events. For 362867/362867 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 24304 event pairs, 884 based on Foata normal form. 8/4919 useless extension candidates. Maximal degree in co-relation 41285. Up to 4644 conditions per place. [2024-06-27 19:52:50,694 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 212 selfloop transitions, 46 changer transitions 0/261 dead transitions. [2024-06-27 19:52:50,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 261 transitions, 3168 flow [2024-06-27 19:52:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:52:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:52:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 19:52:50,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-06-27 19:52:50,695 INFO L175 Difference]: Start difference. First operand has 182 places, 226 transitions, 2454 flow. Second operand 9 states and 148 transitions. [2024-06-27 19:52:50,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 261 transitions, 3168 flow [2024-06-27 19:52:50,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 261 transitions, 3027 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 19:52:50,897 INFO L231 Difference]: Finished difference. Result has 184 places, 228 transitions, 2506 flow [2024-06-27 19:52:50,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2313, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2506, PETRI_PLACES=184, PETRI_TRANSITIONS=228} [2024-06-27 19:52:50,897 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2024-06-27 19:52:50,898 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 228 transitions, 2506 flow [2024-06-27 19:52:50,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:50,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:50,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:50,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:52:50,898 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:50,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:50,898 INFO L85 PathProgramCache]: Analyzing trace with hash 210688731, now seen corresponding path program 4 times [2024-06-27 19:52:50,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:50,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831847528] [2024-06-27 19:52:50,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:50,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:53,869 INFO 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 19:52:53,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:53,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831847528] [2024-06-27 19:52:53,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831847528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:53,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:53,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:52:53,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109728247] [2024-06-27 19:52:53,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:53,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:52:53,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:53,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:52:53,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:52:53,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:53,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 228 transitions, 2506 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:53,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:53,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:53,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:55,376 INFO L124 PetriNetUnfolderBase]: 3307/4923 cut-off events. [2024-06-27 19:52:55,376 INFO L125 PetriNetUnfolderBase]: For 373523/373523 co-relation queries the response was YES. [2024-06-27 19:52:55,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41784 conditions, 4923 events. 3307/4923 cut-off events. For 373523/373523 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 24379 event pairs, 884 based on Foata normal form. 4/4924 useless extension candidates. Maximal degree in co-relation 41701. Up to 4648 conditions per place. [2024-06-27 19:52:55,424 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 213 selfloop transitions, 50 changer transitions 0/266 dead transitions. [2024-06-27 19:52:55,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 266 transitions, 3229 flow [2024-06-27 19:52:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:52:55,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:52:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 19:52:55,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-27 19:52:55,425 INFO L175 Difference]: Start difference. First operand has 184 places, 228 transitions, 2506 flow. Second operand 9 states and 150 transitions. [2024-06-27 19:52:55,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 266 transitions, 3229 flow [2024-06-27 19:52:55,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 266 transitions, 3054 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 19:52:55,706 INFO L231 Difference]: Finished difference. Result has 187 places, 234 transitions, 2550 flow [2024-06-27 19:52:55,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2550, PETRI_PLACES=187, PETRI_TRANSITIONS=234} [2024-06-27 19:52:55,707 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-27 19:52:55,708 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 234 transitions, 2550 flow [2024-06-27 19:52:55,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:52:55,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:55,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:55,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:52:55,708 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:55,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:55,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2090694631, now seen corresponding path program 2 times [2024-06-27 19:52:55,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:55,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220866878] [2024-06-27 19:52:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:55,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:52:57,210 INFO 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 19:52:57,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:52:57,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220866878] [2024-06-27 19:52:57,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220866878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:52:57,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:52:57,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:52:57,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313169843] [2024-06-27 19:52:57,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:52:57,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:52:57,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:52:57,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:52:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:52:57,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:52:57,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 234 transitions, 2550 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:52:57,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:52:57,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:52:57,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:52:58,439 INFO L124 PetriNetUnfolderBase]: 3317/4937 cut-off events. [2024-06-27 19:52:58,439 INFO L125 PetriNetUnfolderBase]: For 382890/382890 co-relation queries the response was YES. [2024-06-27 19:52:58,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42142 conditions, 4937 events. 3317/4937 cut-off events. For 382890/382890 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 24425 event pairs, 914 based on Foata normal form. 2/4936 useless extension candidates. Maximal degree in co-relation 42057. Up to 4803 conditions per place. [2024-06-27 19:52:58,480 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 217 selfloop transitions, 33 changer transitions 0/253 dead transitions. [2024-06-27 19:52:58,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 253 transitions, 3154 flow [2024-06-27 19:52:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:52:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:52:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-27 19:52:58,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-27 19:52:58,481 INFO L175 Difference]: Start difference. First operand has 187 places, 234 transitions, 2550 flow. Second operand 7 states and 112 transitions. [2024-06-27 19:52:58,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 253 transitions, 3154 flow [2024-06-27 19:52:58,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 253 transitions, 2996 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 19:52:58,708 INFO L231 Difference]: Finished difference. Result has 188 places, 237 transitions, 2526 flow [2024-06-27 19:52:58,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2526, PETRI_PLACES=188, PETRI_TRANSITIONS=237} [2024-06-27 19:52:58,709 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 145 predicate places. [2024-06-27 19:52:58,709 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 237 transitions, 2526 flow [2024-06-27 19:52:58,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:52:58,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:52:58,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:52:58,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:52:58,709 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:52:58,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:52:58,709 INFO L85 PathProgramCache]: Analyzing trace with hash 141981526, now seen corresponding path program 1 times [2024-06-27 19:52:58,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:52:58,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606473441] [2024-06-27 19:52:58,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:52:58,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:52:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:00,342 INFO 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 19:53:00,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:00,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606473441] [2024-06-27 19:53:00,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606473441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:00,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:00,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:53:00,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025075722] [2024-06-27 19:53:00,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:00,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:53:00,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:00,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:53:00,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:53:00,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:53:00,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 237 transitions, 2526 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:53:00,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:00,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:53:00,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:01,538 INFO L124 PetriNetUnfolderBase]: 3322/4944 cut-off events. [2024-06-27 19:53:01,538 INFO L125 PetriNetUnfolderBase]: For 389317/389317 co-relation queries the response was YES. [2024-06-27 19:53:01,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42553 conditions, 4944 events. 3322/4944 cut-off events. For 389317/389317 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 24379 event pairs, 909 based on Foata normal form. 1/4942 useless extension candidates. Maximal degree in co-relation 42467. Up to 4893 conditions per place. [2024-06-27 19:53:01,583 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 230 selfloop transitions, 22 changer transitions 0/255 dead transitions. [2024-06-27 19:53:01,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 255 transitions, 3118 flow [2024-06-27 19:53:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:53:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:53:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-27 19:53:01,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36394557823129253 [2024-06-27 19:53:01,584 INFO L175 Difference]: Start difference. First operand has 188 places, 237 transitions, 2526 flow. Second operand 7 states and 107 transitions. [2024-06-27 19:53:01,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 255 transitions, 3118 flow [2024-06-27 19:53:01,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 255 transitions, 3006 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:01,788 INFO L231 Difference]: Finished difference. Result has 190 places, 240 transitions, 2512 flow [2024-06-27 19:53:01,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2414, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2512, PETRI_PLACES=190, PETRI_TRANSITIONS=240} [2024-06-27 19:53:01,789 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-27 19:53:01,789 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 240 transitions, 2512 flow [2024-06-27 19:53:01,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:53:01,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:01,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:01,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:53:01,790 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:53:01,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:01,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1250045908, now seen corresponding path program 2 times [2024-06-27 19:53:01,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:01,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159863435] [2024-06-27 19:53:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:01,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:04,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:04,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159863435] [2024-06-27 19:53:04,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159863435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:04,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:04,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:53:04,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295235410] [2024-06-27 19:53:04,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:04,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:53:04,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:04,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:53:04,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:53:05,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:53:05,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 240 transitions, 2512 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:05,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:05,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:53:05,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:06,465 INFO L124 PetriNetUnfolderBase]: 3361/5004 cut-off events. [2024-06-27 19:53:06,465 INFO L125 PetriNetUnfolderBase]: For 400380/400386 co-relation queries the response was YES. [2024-06-27 19:53:06,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43553 conditions, 5004 events. 3361/5004 cut-off events. For 400380/400386 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 24816 event pairs, 753 based on Foata normal form. 8/5004 useless extension candidates. Maximal degree in co-relation 43466. Up to 4751 conditions per place. [2024-06-27 19:53:06,511 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 217 selfloop transitions, 57 changer transitions 0/277 dead transitions. [2024-06-27 19:53:06,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 277 transitions, 3364 flow [2024-06-27 19:53:06,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:53:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:53:06,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 19:53:06,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:53:06,513 INFO L175 Difference]: Start difference. First operand has 190 places, 240 transitions, 2512 flow. Second operand 9 states and 147 transitions. [2024-06-27 19:53:06,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 277 transitions, 3364 flow [2024-06-27 19:53:06,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 277 transitions, 3288 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:06,754 INFO L231 Difference]: Finished difference. Result has 195 places, 246 transitions, 2691 flow [2024-06-27 19:53:06,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2436, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2691, PETRI_PLACES=195, PETRI_TRANSITIONS=246} [2024-06-27 19:53:06,754 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-06-27 19:53:06,754 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 246 transitions, 2691 flow [2024-06-27 19:53:06,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:06,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:06,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:06,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:53:06,755 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:53:06,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:06,755 INFO L85 PathProgramCache]: Analyzing trace with hash 629188967, now seen corresponding path program 7 times [2024-06-27 19:53:06,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:06,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019467804] [2024-06-27 19:53:06,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:06,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:09,355 INFO 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 19:53:09,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:09,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019467804] [2024-06-27 19:53:09,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019467804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:09,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:09,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:53:09,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875057964] [2024-06-27 19:53:09,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:09,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:53:09,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:53:09,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:53:09,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:53:09,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 246 transitions, 2691 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:09,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:09,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:53:09,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:10,807 INFO L124 PetriNetUnfolderBase]: 3470/5183 cut-off events. [2024-06-27 19:53:10,807 INFO L125 PetriNetUnfolderBase]: For 458536/458542 co-relation queries the response was YES. [2024-06-27 19:53:10,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46118 conditions, 5183 events. 3470/5183 cut-off events. For 458536/458542 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 26083 event pairs, 770 based on Foata normal form. 32/5207 useless extension candidates. Maximal degree in co-relation 46029. Up to 4388 conditions per place. [2024-06-27 19:53:10,856 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 210 selfloop transitions, 79 changer transitions 0/292 dead transitions. [2024-06-27 19:53:10,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 292 transitions, 3989 flow [2024-06-27 19:53:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:53:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:53:10,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 19:53:10,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 19:53:10,863 INFO L175 Difference]: Start difference. First operand has 195 places, 246 transitions, 2691 flow. Second operand 9 states and 162 transitions. [2024-06-27 19:53:10,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 292 transitions, 3989 flow [2024-06-27 19:53:11,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 292 transitions, 3790 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 19:53:11,160 INFO L231 Difference]: Finished difference. Result has 198 places, 248 transitions, 2758 flow [2024-06-27 19:53:11,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2492, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2758, PETRI_PLACES=198, PETRI_TRANSITIONS=248} [2024-06-27 19:53:11,160 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 155 predicate places. [2024-06-27 19:53:11,161 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 248 transitions, 2758 flow [2024-06-27 19:53:11,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:11,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:11,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:11,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:53:11,161 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:53:11,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:11,161 INFO L85 PathProgramCache]: Analyzing trace with hash 629194919, now seen corresponding path program 5 times [2024-06-27 19:53:11,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:11,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023767255] [2024-06-27 19:53:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:11,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:14,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023767255] [2024-06-27 19:53:14,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023767255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:14,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:14,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:53:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469610589] [2024-06-27 19:53:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:14,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:53:14,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:53:14,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:53:14,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:53:14,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 248 transitions, 2758 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:14,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:14,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:53:14,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:16,409 INFO L124 PetriNetUnfolderBase]: 3514/5247 cut-off events. [2024-06-27 19:53:16,409 INFO L125 PetriNetUnfolderBase]: For 449310/449316 co-relation queries the response was YES. [2024-06-27 19:53:16,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46998 conditions, 5247 events. 3514/5247 cut-off events. For 449310/449316 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 26554 event pairs, 770 based on Foata normal form. 8/5247 useless extension candidates. Maximal degree in co-relation 46908. Up to 4582 conditions per place. [2024-06-27 19:53:16,456 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 209 selfloop transitions, 86 changer transitions 0/298 dead transitions. [2024-06-27 19:53:16,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 298 transitions, 4022 flow [2024-06-27 19:53:16,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:53:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:53:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 19:53:16,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 19:53:16,458 INFO L175 Difference]: Start difference. First operand has 198 places, 248 transitions, 2758 flow. Second operand 11 states and 182 transitions. [2024-06-27 19:53:16,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 298 transitions, 4022 flow [2024-06-27 19:53:16,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 298 transitions, 3791 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 19:53:16,708 INFO L231 Difference]: Finished difference. Result has 203 places, 255 transitions, 2810 flow [2024-06-27 19:53:16,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2810, PETRI_PLACES=203, PETRI_TRANSITIONS=255} [2024-06-27 19:53:16,709 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 160 predicate places. [2024-06-27 19:53:16,709 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 255 transitions, 2810 flow [2024-06-27 19:53:16,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:16,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:16,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:16,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:53:16,710 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:53:16,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:16,711 INFO L85 PathProgramCache]: Analyzing trace with hash 629396729, now seen corresponding path program 6 times [2024-06-27 19:53:16,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:16,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455948934] [2024-06-27 19:53:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:16,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:20,118 INFO 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 19:53:20,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:20,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455948934] [2024-06-27 19:53:20,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455948934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:20,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:20,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:53:20,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313709008] [2024-06-27 19:53:20,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:20,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:53:20,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:20,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:53:20,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:53:20,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:53:20,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 255 transitions, 2810 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:20,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:20,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:53:20,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:22,037 INFO L124 PetriNetUnfolderBase]: 3580/5343 cut-off events. [2024-06-27 19:53:22,037 INFO L125 PetriNetUnfolderBase]: For 453679/453685 co-relation queries the response was YES. [2024-06-27 19:53:22,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47441 conditions, 5343 events. 3580/5343 cut-off events. For 453679/453685 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 27068 event pairs, 777 based on Foata normal form. 8/5343 useless extension candidates. Maximal degree in co-relation 47349. Up to 4629 conditions per place. [2024-06-27 19:53:22,094 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 214 selfloop transitions, 89 changer transitions 0/306 dead transitions. [2024-06-27 19:53:22,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 306 transitions, 4132 flow [2024-06-27 19:53:22,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:53:22,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:53:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 19:53:22,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-27 19:53:22,095 INFO L175 Difference]: Start difference. First operand has 203 places, 255 transitions, 2810 flow. Second operand 10 states and 174 transitions. [2024-06-27 19:53:22,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 306 transitions, 4132 flow [2024-06-27 19:53:22,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 306 transitions, 3896 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 19:53:22,519 INFO L231 Difference]: Finished difference. Result has 206 places, 262 transitions, 2859 flow [2024-06-27 19:53:22,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2588, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2859, PETRI_PLACES=206, PETRI_TRANSITIONS=262} [2024-06-27 19:53:22,520 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 163 predicate places. [2024-06-27 19:53:22,520 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 262 transitions, 2859 flow [2024-06-27 19:53:22,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:22,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:22,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:22,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:53:22,520 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:53:22,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:22,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2146285917, now seen corresponding path program 8 times [2024-06-27 19:53:22,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:22,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321468065] [2024-06-27 19:53:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:22,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:25,108 INFO 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 19:53:25,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:25,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321468065] [2024-06-27 19:53:25,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321468065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:25,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:25,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:53:25,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720188123] [2024-06-27 19:53:25,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:25,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:53:25,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:53:25,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:53:25,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:53:25,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 262 transitions, 2859 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:25,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:25,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:53:25,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:26,604 INFO L124 PetriNetUnfolderBase]: 3614/5400 cut-off events. [2024-06-27 19:53:26,605 INFO L125 PetriNetUnfolderBase]: For 487354/487360 co-relation queries the response was YES. [2024-06-27 19:53:26,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48242 conditions, 5400 events. 3614/5400 cut-off events. For 487354/487360 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 27384 event pairs, 890 based on Foata normal form. 12/5398 useless extension candidates. Maximal degree in co-relation 48148. Up to 5062 conditions per place. [2024-06-27 19:53:26,660 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 241 selfloop transitions, 52 changer transitions 0/296 dead transitions. [2024-06-27 19:53:26,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 296 transitions, 3673 flow [2024-06-27 19:53:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:53:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:53:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 19:53:26,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941798941798942 [2024-06-27 19:53:26,662 INFO L175 Difference]: Start difference. First operand has 206 places, 262 transitions, 2859 flow. Second operand 9 states and 149 transitions. [2024-06-27 19:53:26,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 296 transitions, 3673 flow [2024-06-27 19:53:26,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 296 transitions, 3478 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 19:53:26,981 INFO L231 Difference]: Finished difference. Result has 209 places, 264 transitions, 2879 flow [2024-06-27 19:53:26,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2664, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2879, PETRI_PLACES=209, PETRI_TRANSITIONS=264} [2024-06-27 19:53:26,982 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 166 predicate places. [2024-06-27 19:53:26,982 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 264 transitions, 2879 flow [2024-06-27 19:53:26,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:26,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:26,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:26,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:53:26,982 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:53:26,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:26,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1055891017, now seen corresponding path program 9 times [2024-06-27 19:53:26,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:26,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289986432] [2024-06-27 19:53:26,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:26,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:29,565 INFO 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 19:53:29,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:29,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289986432] [2024-06-27 19:53:29,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289986432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:29,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:29,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:53:29,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596256105] [2024-06-27 19:53:29,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:29,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:53:29,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:29,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:53:29,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:53:29,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:53:29,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 264 transitions, 2879 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:29,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:29,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:53:29,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:31,109 INFO L124 PetriNetUnfolderBase]: 3723/5576 cut-off events. [2024-06-27 19:53:31,110 INFO L125 PetriNetUnfolderBase]: For 546720/546726 co-relation queries the response was YES. [2024-06-27 19:53:31,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50155 conditions, 5576 events. 3723/5576 cut-off events. For 546720/546726 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 28590 event pairs, 929 based on Foata normal form. 32/5600 useless extension candidates. Maximal degree in co-relation 50060. Up to 5209 conditions per place. [2024-06-27 19:53:31,164 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 259 selfloop transitions, 42 changer transitions 0/304 dead transitions. [2024-06-27 19:53:31,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 304 transitions, 3959 flow [2024-06-27 19:53:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:53:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:53:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 19:53:31,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-27 19:53:31,166 INFO L175 Difference]: Start difference. First operand has 209 places, 264 transitions, 2879 flow. Second operand 9 states and 155 transitions. [2024-06-27 19:53:31,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 304 transitions, 3959 flow [2024-06-27 19:53:31,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 304 transitions, 3762 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 19:53:31,569 INFO L231 Difference]: Finished difference. Result has 211 places, 266 transitions, 2882 flow [2024-06-27 19:53:31,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2682, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2882, PETRI_PLACES=211, PETRI_TRANSITIONS=266} [2024-06-27 19:53:31,569 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 168 predicate places. [2024-06-27 19:53:31,569 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 266 transitions, 2882 flow [2024-06-27 19:53:31,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:31,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:31,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:31,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:53:31,570 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:53:31,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:31,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2140773435, now seen corresponding path program 7 times [2024-06-27 19:53:31,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:31,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641488741] [2024-06-27 19:53:31,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:31,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:53:34,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:34,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641488741] [2024-06-27 19:53:34,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641488741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:34,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:34,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:53:34,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163863438] [2024-06-27 19:53:34,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:34,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:53:34,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:34,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:53:34,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:53:34,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:53:34,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 266 transitions, 2882 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:34,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:34,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:53:34,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:36,526 INFO L124 PetriNetUnfolderBase]: 3767/5640 cut-off events. [2024-06-27 19:53:36,526 INFO L125 PetriNetUnfolderBase]: For 530672/530678 co-relation queries the response was YES. [2024-06-27 19:53:36,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50595 conditions, 5640 events. 3767/5640 cut-off events. For 530672/530678 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 29061 event pairs, 936 based on Foata normal form. 8/5640 useless extension candidates. Maximal degree in co-relation 50499. Up to 5459 conditions per place. [2024-06-27 19:53:36,588 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 265 selfloop transitions, 41 changer transitions 0/309 dead transitions. [2024-06-27 19:53:36,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 309 transitions, 3713 flow [2024-06-27 19:53:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:53:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:53:36,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 19:53:36,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-27 19:53:36,590 INFO L175 Difference]: Start difference. First operand has 211 places, 266 transitions, 2882 flow. Second operand 10 states and 160 transitions. [2024-06-27 19:53:36,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 309 transitions, 3713 flow [2024-06-27 19:53:37,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 309 transitions, 3545 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 19:53:37,037 INFO L231 Difference]: Finished difference. Result has 215 places, 275 transitions, 2933 flow [2024-06-27 19:53:37,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2933, PETRI_PLACES=215, PETRI_TRANSITIONS=275} [2024-06-27 19:53:37,038 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 172 predicate places. [2024-06-27 19:53:37,038 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 275 transitions, 2933 flow [2024-06-27 19:53:37,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:37,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:37,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:37,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:53:37,038 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:53:37,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:37,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2140571625, now seen corresponding path program 8 times [2024-06-27 19:53:37,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:37,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634087257] [2024-06-27 19:53:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:37,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:40,257 INFO 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 19:53:40,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634087257] [2024-06-27 19:53:40,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634087257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:40,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:40,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:53:40,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769975886] [2024-06-27 19:53:40,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:40,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:53:40,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:40,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:53:40,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:53:40,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:53:40,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 275 transitions, 2933 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:40,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:40,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:53:40,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:42,299 INFO L124 PetriNetUnfolderBase]: 3757/5626 cut-off events. [2024-06-27 19:53:42,299 INFO L125 PetriNetUnfolderBase]: For 528965/528971 co-relation queries the response was YES. [2024-06-27 19:53:42,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50113 conditions, 5626 events. 3757/5626 cut-off events. For 528965/528971 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 28931 event pairs, 934 based on Foata normal form. 8/5626 useless extension candidates. Maximal degree in co-relation 50015. Up to 5445 conditions per place. [2024-06-27 19:53:42,353 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 266 selfloop transitions, 43 changer transitions 0/312 dead transitions. [2024-06-27 19:53:42,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 312 transitions, 3681 flow [2024-06-27 19:53:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:53:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:53:42,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 19:53:42,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 19:53:42,354 INFO L175 Difference]: Start difference. First operand has 215 places, 275 transitions, 2933 flow. Second operand 10 states and 161 transitions. [2024-06-27 19:53:42,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 312 transitions, 3681 flow [2024-06-27 19:53:42,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 312 transitions, 3555 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-27 19:53:42,773 INFO L231 Difference]: Finished difference. Result has 220 places, 277 transitions, 2919 flow [2024-06-27 19:53:42,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2919, PETRI_PLACES=220, PETRI_TRANSITIONS=277} [2024-06-27 19:53:42,774 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-06-27 19:53:42,774 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 277 transitions, 2919 flow [2024-06-27 19:53:42,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:42,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:42,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:42,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:53:42,775 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:53:42,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:42,776 INFO L85 PathProgramCache]: Analyzing trace with hash 886164428, now seen corresponding path program 3 times [2024-06-27 19:53:42,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:42,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341281618] [2024-06-27 19:53:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:42,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:46,012 INFO 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 19:53:46,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:46,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341281618] [2024-06-27 19:53:46,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341281618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:46,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:46,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:53:46,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019769744] [2024-06-27 19:53:46,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:46,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:53:46,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:46,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:53:46,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:53:46,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:53:46,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 277 transitions, 2919 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:46,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:46,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:53:46,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:47,743 INFO L124 PetriNetUnfolderBase]: 3774/5653 cut-off events. [2024-06-27 19:53:47,744 INFO L125 PetriNetUnfolderBase]: For 537810/537816 co-relation queries the response was YES. [2024-06-27 19:53:47,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50631 conditions, 5653 events. 3774/5653 cut-off events. For 537810/537816 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 29185 event pairs, 835 based on Foata normal form. 8/5653 useless extension candidates. Maximal degree in co-relation 50531. Up to 5400 conditions per place. [2024-06-27 19:53:47,803 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 244 selfloop transitions, 64 changer transitions 0/311 dead transitions. [2024-06-27 19:53:47,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 311 transitions, 3812 flow [2024-06-27 19:53:47,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:53:47,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:53:47,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 19:53:47,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 19:53:47,805 INFO L175 Difference]: Start difference. First operand has 220 places, 277 transitions, 2919 flow. Second operand 10 states and 154 transitions. [2024-06-27 19:53:47,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 311 transitions, 3812 flow [2024-06-27 19:53:48,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 311 transitions, 3714 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 19:53:48,213 INFO L231 Difference]: Finished difference. Result has 223 places, 281 transitions, 3075 flow [2024-06-27 19:53:48,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2821, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3075, PETRI_PLACES=223, PETRI_TRANSITIONS=281} [2024-06-27 19:53:48,213 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-27 19:53:48,213 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 281 transitions, 3075 flow [2024-06-27 19:53:48,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:48,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:48,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:48,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:53:48,214 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:53:48,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:48,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2141038085, now seen corresponding path program 10 times [2024-06-27 19:53:48,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:48,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084310453] [2024-06-27 19:53:48,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:48,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:51,036 INFO 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 19:53:51,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084310453] [2024-06-27 19:53:51,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084310453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:51,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:51,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:53:51,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246411981] [2024-06-27 19:53:51,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:51,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:53:51,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:51,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:53:51,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:53:51,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:53:51,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 281 transitions, 3075 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:51,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:51,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:53:51,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:52,589 INFO L124 PetriNetUnfolderBase]: 3758/5632 cut-off events. [2024-06-27 19:53:52,590 INFO L125 PetriNetUnfolderBase]: For 560362/560368 co-relation queries the response was YES. [2024-06-27 19:53:52,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50444 conditions, 5632 events. 3758/5632 cut-off events. For 560362/560368 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 28999 event pairs, 905 based on Foata normal form. 12/5630 useless extension candidates. Maximal degree in co-relation 50343. Up to 5322 conditions per place. [2024-06-27 19:53:52,654 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 260 selfloop transitions, 51 changer transitions 0/314 dead transitions. [2024-06-27 19:53:52,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 314 transitions, 3917 flow [2024-06-27 19:53:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:53:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:53:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 19:53:52,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:53:52,656 INFO L175 Difference]: Start difference. First operand has 223 places, 281 transitions, 3075 flow. Second operand 9 states and 147 transitions. [2024-06-27 19:53:52,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 314 transitions, 3917 flow [2024-06-27 19:53:53,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 314 transitions, 3726 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 19:53:53,070 INFO L231 Difference]: Finished difference. Result has 226 places, 283 transitions, 3107 flow [2024-06-27 19:53:53,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2884, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3107, PETRI_PLACES=226, PETRI_TRANSITIONS=283} [2024-06-27 19:53:53,071 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 183 predicate places. [2024-06-27 19:53:53,071 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 283 transitions, 3107 flow [2024-06-27 19:53:53,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:53,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:53,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:53,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:53:53,071 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:53:53,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1056106498, now seen corresponding path program 4 times [2024-06-27 19:53:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:53,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353091003] [2024-06-27 19:53:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:53,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:53:56,648 INFO 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 19:53:56,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:53:56,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353091003] [2024-06-27 19:53:56,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353091003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:53:56,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:53:56,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:53:56,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496819801] [2024-06-27 19:53:56,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:53:56,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:53:56,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:53:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:53:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:53:56,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:53:56,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 283 transitions, 3107 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:56,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:53:56,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:53:56,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:53:58,477 INFO L124 PetriNetUnfolderBase]: 3775/5656 cut-off events. [2024-06-27 19:53:58,477 INFO L125 PetriNetUnfolderBase]: For 573649/573655 co-relation queries the response was YES. [2024-06-27 19:53:58,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50997 conditions, 5656 events. 3775/5656 cut-off events. For 573649/573655 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 29106 event pairs, 956 based on Foata normal form. 8/5656 useless extension candidates. Maximal degree in co-relation 50895. Up to 5530 conditions per place. [2024-06-27 19:53:58,533 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 277 selfloop transitions, 37 changer transitions 0/317 dead transitions. [2024-06-27 19:53:58,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 317 transitions, 3931 flow [2024-06-27 19:53:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:53:58,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:53:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 19:53:58,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-27 19:53:58,534 INFO L175 Difference]: Start difference. First operand has 226 places, 283 transitions, 3107 flow. Second operand 10 states and 155 transitions. [2024-06-27 19:53:58,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 317 transitions, 3931 flow [2024-06-27 19:53:58,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 317 transitions, 3726 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-27 19:53:58,845 INFO L231 Difference]: Finished difference. Result has 229 places, 285 transitions, 3085 flow [2024-06-27 19:53:58,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2902, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3085, PETRI_PLACES=229, PETRI_TRANSITIONS=285} [2024-06-27 19:53:58,845 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 186 predicate places. [2024-06-27 19:53:58,846 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 285 transitions, 3085 flow [2024-06-27 19:53:58,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:53:58,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:53:58,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:53:58,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:53:58,846 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:53:58,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:53:58,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2140884263, now seen corresponding path program 9 times [2024-06-27 19:53:58,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:53:58,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195281858] [2024-06-27 19:53:58,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:53:58,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:53:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:02,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:02,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195281858] [2024-06-27 19:54:02,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195281858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:02,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:02,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:02,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551127683] [2024-06-27 19:54:02,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:02,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:02,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:02,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:02,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:02,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:54:02,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 285 transitions, 3085 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:02,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:02,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:54:02,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:03,910 INFO L124 PetriNetUnfolderBase]: 3765/5645 cut-off events. [2024-06-27 19:54:03,910 INFO L125 PetriNetUnfolderBase]: For 583045/583051 co-relation queries the response was YES. [2024-06-27 19:54:03,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50569 conditions, 5645 events. 3765/5645 cut-off events. For 583045/583051 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 29241 event pairs, 910 based on Foata normal form. 8/5639 useless extension candidates. Maximal degree in co-relation 50466. Up to 5330 conditions per place. [2024-06-27 19:54:03,974 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 267 selfloop transitions, 56 changer transitions 0/326 dead transitions. [2024-06-27 19:54:03,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 326 transitions, 3983 flow [2024-06-27 19:54:03,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:03,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 19:54:03,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880952380952381 [2024-06-27 19:54:03,976 INFO L175 Difference]: Start difference. First operand has 229 places, 285 transitions, 3085 flow. Second operand 10 states and 163 transitions. [2024-06-27 19:54:03,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 326 transitions, 3983 flow [2024-06-27 19:54:04,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 326 transitions, 3818 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:04,326 INFO L231 Difference]: Finished difference. Result has 232 places, 291 transitions, 3194 flow [2024-06-27 19:54:04,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2920, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3194, PETRI_PLACES=232, PETRI_TRANSITIONS=291} [2024-06-27 19:54:04,327 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 189 predicate places. [2024-06-27 19:54:04,327 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 291 transitions, 3194 flow [2024-06-27 19:54:04,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:04,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:04,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:04,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:54:04,327 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:04,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:04,327 INFO L85 PathProgramCache]: Analyzing trace with hash 895428158, now seen corresponding path program 5 times [2024-06-27 19:54:04,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:04,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969814614] [2024-06-27 19:54:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:04,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:07,527 INFO 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 19:54:07,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:07,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969814614] [2024-06-27 19:54:07,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969814614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:07,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:07,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:07,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691481688] [2024-06-27 19:54:07,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:07,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:07,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:07,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:54:07,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 291 transitions, 3194 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:07,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:07,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:54:07,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:09,319 INFO L124 PetriNetUnfolderBase]: 3757/5630 cut-off events. [2024-06-27 19:54:09,319 INFO L125 PetriNetUnfolderBase]: For 579444/579450 co-relation queries the response was YES. [2024-06-27 19:54:09,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50962 conditions, 5630 events. 3757/5630 cut-off events. For 579444/579450 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 29132 event pairs, 770 based on Foata normal form. 8/5630 useless extension candidates. Maximal degree in co-relation 50857. Up to 5282 conditions per place. [2024-06-27 19:54:09,374 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 250 selfloop transitions, 80 changer transitions 0/333 dead transitions. [2024-06-27 19:54:09,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 333 transitions, 4161 flow [2024-06-27 19:54:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:09,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 19:54:09,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-06-27 19:54:09,375 INFO L175 Difference]: Start difference. First operand has 232 places, 291 transitions, 3194 flow. Second operand 10 states and 159 transitions. [2024-06-27 19:54:09,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 333 transitions, 4161 flow [2024-06-27 19:54:09,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 333 transitions, 3931 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:09,748 INFO L231 Difference]: Finished difference. Result has 236 places, 299 transitions, 3354 flow [2024-06-27 19:54:09,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3354, PETRI_PLACES=236, PETRI_TRANSITIONS=299} [2024-06-27 19:54:09,748 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 193 predicate places. [2024-06-27 19:54:09,748 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 299 transitions, 3354 flow [2024-06-27 19:54:09,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:09,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:09,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:09,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:54:09,749 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:09,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:09,750 INFO L85 PathProgramCache]: Analyzing trace with hash 885897239, now seen corresponding path program 10 times [2024-06-27 19:54:09,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:09,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860451416] [2024-06-27 19:54:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:09,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:12,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:12,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860451416] [2024-06-27 19:54:12,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860451416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:12,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:12,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:12,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752927612] [2024-06-27 19:54:12,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:12,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:12,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:12,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:12,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:12,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:54:12,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 299 transitions, 3354 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:12,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:12,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:54:12,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:14,900 INFO L124 PetriNetUnfolderBase]: 3747/5616 cut-off events. [2024-06-27 19:54:14,900 INFO L125 PetriNetUnfolderBase]: For 589106/589112 co-relation queries the response was YES. [2024-06-27 19:54:14,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51039 conditions, 5616 events. 3747/5616 cut-off events. For 589106/589112 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 29043 event pairs, 747 based on Foata normal form. 8/5616 useless extension candidates. Maximal degree in co-relation 50932. Up to 4878 conditions per place. [2024-06-27 19:54:14,958 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 226 selfloop transitions, 113 changer transitions 0/342 dead transitions. [2024-06-27 19:54:14,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 342 transitions, 4479 flow [2024-06-27 19:54:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:54:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:54:14,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 19:54:14,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:54:14,960 INFO L175 Difference]: Start difference. First operand has 236 places, 299 transitions, 3354 flow. Second operand 10 states and 168 transitions. [2024-06-27 19:54:14,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 342 transitions, 4479 flow [2024-06-27 19:54:15,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 342 transitions, 4152 flow, removed 104 selfloop flow, removed 6 redundant places. [2024-06-27 19:54:15,390 INFO L231 Difference]: Finished difference. Result has 241 places, 304 transitions, 3381 flow [2024-06-27 19:54:15,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3061, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3381, PETRI_PLACES=241, PETRI_TRANSITIONS=304} [2024-06-27 19:54:15,391 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 198 predicate places. [2024-06-27 19:54:15,391 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 304 transitions, 3381 flow [2024-06-27 19:54:15,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:15,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:15,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:15,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:54:15,392 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:15,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash 525766083, now seen corresponding path program 3 times [2024-06-27 19:54:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:15,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235670202] [2024-06-27 19:54:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:15,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:16,990 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 19:54:16,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:16,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235670202] [2024-06-27 19:54:16,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235670202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:16,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:16,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:54:16,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508127510] [2024-06-27 19:54:16,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:16,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:54:16,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:16,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:54:16,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:54:17,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:54:17,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 304 transitions, 3381 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:54:17,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:17,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:54:17,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:18,259 INFO L124 PetriNetUnfolderBase]: 3741/5611 cut-off events. [2024-06-27 19:54:18,259 INFO L125 PetriNetUnfolderBase]: For 595750/595756 co-relation queries the response was YES. [2024-06-27 19:54:18,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51156 conditions, 5611 events. 3741/5611 cut-off events. For 595750/595756 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 28991 event pairs, 829 based on Foata normal form. 6/5603 useless extension candidates. Maximal degree in co-relation 51047. Up to 5461 conditions per place. [2024-06-27 19:54:18,328 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 276 selfloop transitions, 39 changer transitions 0/318 dead transitions. [2024-06-27 19:54:18,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 318 transitions, 4109 flow [2024-06-27 19:54:18,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:54:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:54:18,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-27 19:54:18,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3673469387755102 [2024-06-27 19:54:18,329 INFO L175 Difference]: Start difference. First operand has 241 places, 304 transitions, 3381 flow. Second operand 7 states and 108 transitions. [2024-06-27 19:54:18,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 318 transitions, 4109 flow [2024-06-27 19:54:18,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 318 transitions, 3930 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:18,993 INFO L231 Difference]: Finished difference. Result has 241 places, 307 transitions, 3358 flow [2024-06-27 19:54:18,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3358, PETRI_PLACES=241, PETRI_TRANSITIONS=307} [2024-06-27 19:54:18,993 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 198 predicate places. [2024-06-27 19:54:18,993 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 307 transitions, 3358 flow [2024-06-27 19:54:18,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:54:18,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:18,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:18,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 19:54:18,994 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:18,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:18,994 INFO L85 PathProgramCache]: Analyzing trace with hash 525766486, now seen corresponding path program 2 times [2024-06-27 19:54:18,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:18,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476312462] [2024-06-27 19:54:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:18,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:20,839 INFO 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 19:54:20,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:20,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476312462] [2024-06-27 19:54:20,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476312462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:20,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:20,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:54:20,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417055166] [2024-06-27 19:54:20,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:20,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:54:20,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:20,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:54:20,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:54:20,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:54:20,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 307 transitions, 3358 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:54:20,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:20,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:54:20,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:22,127 INFO L124 PetriNetUnfolderBase]: 3746/5615 cut-off events. [2024-06-27 19:54:22,127 INFO L125 PetriNetUnfolderBase]: For 603488/603494 co-relation queries the response was YES. [2024-06-27 19:54:22,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50720 conditions, 5615 events. 3746/5615 cut-off events. For 603488/603494 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 29003 event pairs, 813 based on Foata normal form. 5/5612 useless extension candidates. Maximal degree in co-relation 50611. Up to 5557 conditions per place. [2024-06-27 19:54:22,190 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 291 selfloop transitions, 26 changer transitions 0/320 dead transitions. [2024-06-27 19:54:22,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 320 transitions, 4080 flow [2024-06-27 19:54:22,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:54:22,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:54:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-27 19:54:22,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35034013605442177 [2024-06-27 19:54:22,191 INFO L175 Difference]: Start difference. First operand has 241 places, 307 transitions, 3358 flow. Second operand 7 states and 103 transitions. [2024-06-27 19:54:22,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 320 transitions, 4080 flow [2024-06-27 19:54:22,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 320 transitions, 3946 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:22,701 INFO L231 Difference]: Finished difference. Result has 243 places, 310 transitions, 3346 flow [2024-06-27 19:54:22,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3224, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3346, PETRI_PLACES=243, PETRI_TRANSITIONS=310} [2024-06-27 19:54:22,702 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 200 predicate places. [2024-06-27 19:54:22,702 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 310 transitions, 3346 flow [2024-06-27 19:54:22,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:54:22,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:22,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:22,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 19:54:22,703 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:22,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:22,703 INFO L85 PathProgramCache]: Analyzing trace with hash 526211956, now seen corresponding path program 3 times [2024-06-27 19:54:22,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:22,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954645379] [2024-06-27 19:54:22,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:22,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:24,678 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 19:54:24,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:24,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954645379] [2024-06-27 19:54:24,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954645379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:24,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:24,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:54:24,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491872663] [2024-06-27 19:54:24,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:24,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:54:24,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:24,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:54:24,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:54:24,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:54:24,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 310 transitions, 3346 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:54:24,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:24,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:54:24,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:25,960 INFO L124 PetriNetUnfolderBase]: 3743/5611 cut-off events. [2024-06-27 19:54:25,961 INFO L125 PetriNetUnfolderBase]: For 616079/616085 co-relation queries the response was YES. [2024-06-27 19:54:26,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51073 conditions, 5611 events. 3743/5611 cut-off events. For 616079/616085 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 28915 event pairs, 813 based on Foata normal form. 5/5608 useless extension candidates. Maximal degree in co-relation 50963. Up to 5544 conditions per place. [2024-06-27 19:54:26,026 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 289 selfloop transitions, 34 changer transitions 0/326 dead transitions. [2024-06-27 19:54:26,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 326 transitions, 4100 flow [2024-06-27 19:54:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:54:26,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:54:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-27 19:54:26,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35374149659863946 [2024-06-27 19:54:26,027 INFO L175 Difference]: Start difference. First operand has 243 places, 310 transitions, 3346 flow. Second operand 7 states and 104 transitions. [2024-06-27 19:54:26,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 326 transitions, 4100 flow [2024-06-27 19:54:26,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 326 transitions, 4000 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:26,679 INFO L231 Difference]: Finished difference. Result has 246 places, 316 transitions, 3420 flow [2024-06-27 19:54:26,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3246, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3420, PETRI_PLACES=246, PETRI_TRANSITIONS=316} [2024-06-27 19:54:26,680 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 203 predicate places. [2024-06-27 19:54:26,680 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 316 transitions, 3420 flow [2024-06-27 19:54:26,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:54:26,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:26,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:26,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 19:54:26,680 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:26,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:26,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1120921605, now seen corresponding path program 11 times [2024-06-27 19:54:26,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:26,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153592811] [2024-06-27 19:54:26,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:26,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:29,679 INFO 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 19:54:29,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:29,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153592811] [2024-06-27 19:54:29,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153592811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:29,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:29,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:29,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796889576] [2024-06-27 19:54:29,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:29,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:29,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:29,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:29,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:29,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:54:29,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 316 transitions, 3420 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:29,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:29,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:54:29,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:31,561 INFO L124 PetriNetUnfolderBase]: 3911/5852 cut-off events. [2024-06-27 19:54:31,561 INFO L125 PetriNetUnfolderBase]: For 640553/640553 co-relation queries the response was YES. [2024-06-27 19:54:31,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53263 conditions, 5852 events. 3911/5852 cut-off events. For 640553/640553 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30352 event pairs, 798 based on Foata normal form. 4/5853 useless extension candidates. Maximal degree in co-relation 53151. Up to 5569 conditions per place. [2024-06-27 19:54:31,625 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 326 selfloop transitions, 66 changer transitions 0/395 dead transitions. [2024-06-27 19:54:31,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 395 transitions, 5095 flow [2024-06-27 19:54:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:54:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:54:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 19:54:31,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 19:54:31,626 INFO L175 Difference]: Start difference. First operand has 246 places, 316 transitions, 3420 flow. Second operand 11 states and 182 transitions. [2024-06-27 19:54:31,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 395 transitions, 5095 flow [2024-06-27 19:54:32,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 395 transitions, 5010 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 19:54:32,488 INFO L231 Difference]: Finished difference. Result has 259 places, 351 transitions, 4097 flow [2024-06-27 19:54:32,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4097, PETRI_PLACES=259, PETRI_TRANSITIONS=351} [2024-06-27 19:54:32,489 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 216 predicate places. [2024-06-27 19:54:32,489 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 351 transitions, 4097 flow [2024-06-27 19:54:32,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:32,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:32,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:32,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 19:54:32,489 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:32,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:32,490 INFO L85 PathProgramCache]: Analyzing trace with hash -601624839, now seen corresponding path program 12 times [2024-06-27 19:54:32,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:32,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012913723] [2024-06-27 19:54:32,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:32,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:35,051 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 19:54:35,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:35,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012913723] [2024-06-27 19:54:35,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012913723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:35,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:35,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:54:35,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746786562] [2024-06-27 19:54:35,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:35,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:54:35,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:35,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:54:35,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:54:35,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:54:35,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 351 transitions, 4097 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:35,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:35,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:54:35,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:37,010 INFO L124 PetriNetUnfolderBase]: 3901/5838 cut-off events. [2024-06-27 19:54:37,010 INFO L125 PetriNetUnfolderBase]: For 651394/651394 co-relation queries the response was YES. [2024-06-27 19:54:37,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53804 conditions, 5838 events. 3901/5838 cut-off events. For 651394/651394 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 30240 event pairs, 798 based on Foata normal form. 4/5839 useless extension candidates. Maximal degree in co-relation 53685. Up to 5561 conditions per place. [2024-06-27 19:54:37,080 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 326 selfloop transitions, 64 changer transitions 0/393 dead transitions. [2024-06-27 19:54:37,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 393 transitions, 5027 flow [2024-06-27 19:54:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:54:37,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:54:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 19:54:37,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3874458874458874 [2024-06-27 19:54:37,082 INFO L175 Difference]: Start difference. First operand has 259 places, 351 transitions, 4097 flow. Second operand 11 states and 179 transitions. [2024-06-27 19:54:37,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 393 transitions, 5027 flow [2024-06-27 19:54:37,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 393 transitions, 4835 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 19:54:37,649 INFO L231 Difference]: Finished difference. Result has 263 places, 352 transitions, 4074 flow [2024-06-27 19:54:37,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3906, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4074, PETRI_PLACES=263, PETRI_TRANSITIONS=352} [2024-06-27 19:54:37,649 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 220 predicate places. [2024-06-27 19:54:37,649 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 352 transitions, 4074 flow [2024-06-27 19:54:37,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:37,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:37,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:37,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 19:54:37,650 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:37,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:37,650 INFO L85 PathProgramCache]: Analyzing trace with hash 319147611, now seen corresponding path program 1 times [2024-06-27 19:54:37,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:37,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519313857] [2024-06-27 19:54:37,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:37,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:39,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:39,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519313857] [2024-06-27 19:54:39,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519313857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:39,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:39,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:54:39,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164677473] [2024-06-27 19:54:39,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:39,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:54:39,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:39,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:54:39,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:54:39,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:54:39,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 352 transitions, 4074 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:39,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:39,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:54:39,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:40,896 INFO L124 PetriNetUnfolderBase]: 3740/5682 cut-off events. [2024-06-27 19:54:40,896 INFO L125 PetriNetUnfolderBase]: For 662186/662186 co-relation queries the response was YES. [2024-06-27 19:54:40,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52787 conditions, 5682 events. 3740/5682 cut-off events. For 662186/662186 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30118 event pairs, 873 based on Foata normal form. 2/5681 useless extension candidates. Maximal degree in co-relation 52668. Up to 5510 conditions per place. [2024-06-27 19:54:40,966 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 348 selfloop transitions, 15 changer transitions 0/371 dead transitions. [2024-06-27 19:54:40,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 371 transitions, 4940 flow [2024-06-27 19:54:40,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:54:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:54:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-27 19:54:40,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877551020408163 [2024-06-27 19:54:40,967 INFO L175 Difference]: Start difference. First operand has 263 places, 352 transitions, 4074 flow. Second operand 7 states and 114 transitions. [2024-06-27 19:54:40,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 371 transitions, 4940 flow [2024-06-27 19:54:41,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 371 transitions, 4841 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 19:54:41,667 INFO L231 Difference]: Finished difference. Result has 263 places, 355 transitions, 4095 flow [2024-06-27 19:54:41,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3975, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4095, PETRI_PLACES=263, PETRI_TRANSITIONS=355} [2024-06-27 19:54:41,668 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 220 predicate places. [2024-06-27 19:54:41,668 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 355 transitions, 4095 flow [2024-06-27 19:54:41,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:41,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:41,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:41,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 19:54:41,668 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:41,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:41,668 INFO L85 PathProgramCache]: Analyzing trace with hash -806856739, now seen corresponding path program 2 times [2024-06-27 19:54:41,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:41,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37814615] [2024-06-27 19:54:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:41,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:43,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:43,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:43,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37814615] [2024-06-27 19:54:43,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37814615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:43,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:43,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:54:43,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393307784] [2024-06-27 19:54:43,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:43,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:54:43,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:43,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:54:43,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:54:43,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:54:43,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 355 transitions, 4095 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:43,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:43,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:54:43,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:45,087 INFO L124 PetriNetUnfolderBase]: 3755/5703 cut-off events. [2024-06-27 19:54:45,087 INFO L125 PetriNetUnfolderBase]: For 681197/681197 co-relation queries the response was YES. [2024-06-27 19:54:45,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53360 conditions, 5703 events. 3755/5703 cut-off events. For 681197/681197 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30197 event pairs, 873 based on Foata normal form. 3/5703 useless extension candidates. Maximal degree in co-relation 53241. Up to 5534 conditions per place. [2024-06-27 19:54:45,156 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 349 selfloop transitions, 15 changer transitions 0/372 dead transitions. [2024-06-27 19:54:45,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 372 transitions, 4973 flow [2024-06-27 19:54:45,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:54:45,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:54:45,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-27 19:54:45,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-27 19:54:45,158 INFO L175 Difference]: Start difference. First operand has 263 places, 355 transitions, 4095 flow. Second operand 7 states and 112 transitions. [2024-06-27 19:54:45,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 372 transitions, 4973 flow [2024-06-27 19:54:45,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 372 transitions, 4875 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:45,927 INFO L231 Difference]: Finished difference. Result has 265 places, 358 transitions, 4093 flow [2024-06-27 19:54:45,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3997, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4093, PETRI_PLACES=265, PETRI_TRANSITIONS=358} [2024-06-27 19:54:45,927 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-27 19:54:45,927 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 358 transitions, 4093 flow [2024-06-27 19:54:45,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:45,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:45,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:45,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 19:54:45,928 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:45,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash 518599348, now seen corresponding path program 1 times [2024-06-27 19:54:45,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:45,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824020661] [2024-06-27 19:54:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:45,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:47,685 INFO 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 19:54:47,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:47,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824020661] [2024-06-27 19:54:47,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824020661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:47,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:47,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:54:47,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941071910] [2024-06-27 19:54:47,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:47,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:54:47,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:54:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:54:47,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:54:47,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 358 transitions, 4093 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:47,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:47,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:54:47,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:49,392 INFO L124 PetriNetUnfolderBase]: 3760/5712 cut-off events. [2024-06-27 19:54:49,392 INFO L125 PetriNetUnfolderBase]: For 696929/696929 co-relation queries the response was YES. [2024-06-27 19:54:49,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53944 conditions, 5712 events. 3760/5712 cut-off events. For 696929/696929 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 30274 event pairs, 872 based on Foata normal form. 2/5711 useless extension candidates. Maximal degree in co-relation 53824. Up to 5547 conditions per place. [2024-06-27 19:54:49,470 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 350 selfloop transitions, 15 changer transitions 0/373 dead transitions. [2024-06-27 19:54:49,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 373 transitions, 4909 flow [2024-06-27 19:54:49,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:54:49,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:54:49,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-27 19:54:49,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741496598639456 [2024-06-27 19:54:49,471 INFO L175 Difference]: Start difference. First operand has 265 places, 358 transitions, 4093 flow. Second operand 7 states and 110 transitions. [2024-06-27 19:54:49,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 373 transitions, 4909 flow [2024-06-27 19:54:50,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 373 transitions, 4839 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:50,219 INFO L231 Difference]: Finished difference. Result has 267 places, 361 transitions, 4117 flow [2024-06-27 19:54:50,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4023, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4117, PETRI_PLACES=267, PETRI_TRANSITIONS=361} [2024-06-27 19:54:50,220 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 224 predicate places. [2024-06-27 19:54:50,220 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 361 transitions, 4117 flow [2024-06-27 19:54:50,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:50,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:50,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:50,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 19:54:50,221 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:50,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:50,222 INFO L85 PathProgramCache]: Analyzing trace with hash 526217908, now seen corresponding path program 2 times [2024-06-27 19:54:50,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:50,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152552955] [2024-06-27 19:54:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:50,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:52,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:52,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152552955] [2024-06-27 19:54:52,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152552955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:52,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:52,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:54:52,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704444360] [2024-06-27 19:54:52,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:52,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:54:52,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:52,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:54:52,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:54:52,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:54:52,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 361 transitions, 4117 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:52,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:52,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:54:52,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:53,408 INFO L124 PetriNetUnfolderBase]: 3770/5728 cut-off events. [2024-06-27 19:54:53,408 INFO L125 PetriNetUnfolderBase]: For 715250/715250 co-relation queries the response was YES. [2024-06-27 19:54:53,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54546 conditions, 5728 events. 3770/5728 cut-off events. For 715250/715250 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 30388 event pairs, 872 based on Foata normal form. 3/5728 useless extension candidates. Maximal degree in co-relation 54425. Up to 5562 conditions per place. [2024-06-27 19:54:53,479 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 349 selfloop transitions, 17 changer transitions 0/374 dead transitions. [2024-06-27 19:54:53,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 374 transitions, 4933 flow [2024-06-27 19:54:53,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:54:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:54:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-27 19:54:53,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3673469387755102 [2024-06-27 19:54:53,480 INFO L175 Difference]: Start difference. First operand has 267 places, 361 transitions, 4117 flow. Second operand 7 states and 108 transitions. [2024-06-27 19:54:53,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 374 transitions, 4933 flow [2024-06-27 19:54:54,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 374 transitions, 4861 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:54,371 INFO L231 Difference]: Finished difference. Result has 269 places, 364 transitions, 4146 flow [2024-06-27 19:54:54,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4045, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4146, PETRI_PLACES=269, PETRI_TRANSITIONS=364} [2024-06-27 19:54:54,371 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-27 19:54:54,371 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 364 transitions, 4146 flow [2024-06-27 19:54:54,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:54,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:54,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:54,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 19:54:54,372 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:54,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash 525950781, now seen corresponding path program 3 times [2024-06-27 19:54:54,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:54,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492464779] [2024-06-27 19:54:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:54,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:54:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:54:56,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:54:56,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492464779] [2024-06-27 19:54:56,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492464779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:54:56,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:54:56,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:54:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958018548] [2024-06-27 19:54:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:54:56,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:54:56,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:54:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:54:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:54:56,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:54:56,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 364 transitions, 4146 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:56,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:54:56,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:54:56,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:54:57,520 INFO L124 PetriNetUnfolderBase]: 3782/5743 cut-off events. [2024-06-27 19:54:57,520 INFO L125 PetriNetUnfolderBase]: For 728715/728715 co-relation queries the response was YES. [2024-06-27 19:54:57,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55219 conditions, 5743 events. 3782/5743 cut-off events. For 728715/728715 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 30426 event pairs, 872 based on Foata normal form. 3/5743 useless extension candidates. Maximal degree in co-relation 55097. Up to 5576 conditions per place. [2024-06-27 19:54:57,590 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 355 selfloop transitions, 15 changer transitions 0/378 dead transitions. [2024-06-27 19:54:57,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 378 transitions, 5036 flow [2024-06-27 19:54:57,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:54:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:54:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-27 19:54:57,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707482993197279 [2024-06-27 19:54:57,591 INFO L175 Difference]: Start difference. First operand has 269 places, 364 transitions, 4146 flow. Second operand 7 states and 109 transitions. [2024-06-27 19:54:57,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 378 transitions, 5036 flow [2024-06-27 19:54:58,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 378 transitions, 4965 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 19:54:58,403 INFO L231 Difference]: Finished difference. Result has 271 places, 367 transitions, 4181 flow [2024-06-27 19:54:58,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4181, PETRI_PLACES=271, PETRI_TRANSITIONS=367} [2024-06-27 19:54:58,404 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 228 predicate places. [2024-06-27 19:54:58,404 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 367 transitions, 4181 flow [2024-06-27 19:54:58,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:54:58,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:54:58,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:54:58,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 19:54:58,404 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:54:58,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:54:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash -337086054, now seen corresponding path program 3 times [2024-06-27 19:54:58,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:54:58,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166712147] [2024-06-27 19:54:58,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:54:58,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:54:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:00,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:00,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:00,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166712147] [2024-06-27 19:55:00,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166712147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:00,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:00,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:55:00,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042636244] [2024-06-27 19:55:00,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:00,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:55:00,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:00,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:55:00,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:55:00,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:55:00,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 367 transitions, 4181 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:00,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:00,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:55:00,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:01,621 INFO L124 PetriNetUnfolderBase]: 3771/5730 cut-off events. [2024-06-27 19:55:01,621 INFO L125 PetriNetUnfolderBase]: For 738950/738950 co-relation queries the response was YES. [2024-06-27 19:55:01,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55466 conditions, 5730 events. 3771/5730 cut-off events. For 738950/738950 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 30376 event pairs, 871 based on Foata normal form. 2/5729 useless extension candidates. Maximal degree in co-relation 55343. Up to 5570 conditions per place. [2024-06-27 19:55:01,692 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 356 selfloop transitions, 15 changer transitions 0/379 dead transitions. [2024-06-27 19:55:01,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 379 transitions, 5011 flow [2024-06-27 19:55:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:55:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:55:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-27 19:55:01,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36394557823129253 [2024-06-27 19:55:01,694 INFO L175 Difference]: Start difference. First operand has 271 places, 367 transitions, 4181 flow. Second operand 7 states and 107 transitions. [2024-06-27 19:55:01,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 379 transitions, 5011 flow [2024-06-27 19:55:02,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 379 transitions, 4931 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 19:55:02,472 INFO L231 Difference]: Finished difference. Result has 273 places, 370 transitions, 4207 flow [2024-06-27 19:55:02,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4101, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4207, PETRI_PLACES=273, PETRI_TRANSITIONS=370} [2024-06-27 19:55:02,473 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 230 predicate places. [2024-06-27 19:55:02,473 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 370 transitions, 4207 flow [2024-06-27 19:55:02,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:02,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:02,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:02,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 19:55:02,473 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:55:02,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash -336809224, now seen corresponding path program 1 times [2024-06-27 19:55:02,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:02,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968713591] [2024-06-27 19:55:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:02,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:05,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:05,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968713591] [2024-06-27 19:55:05,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968713591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:05,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:05,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:55:05,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250313746] [2024-06-27 19:55:05,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:05,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:55:05,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:05,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:55:05,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:55:05,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:55:05,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 370 transitions, 4207 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:05,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:05,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:55:05,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:07,084 INFO L124 PetriNetUnfolderBase]: 3949/5907 cut-off events. [2024-06-27 19:55:07,084 INFO L125 PetriNetUnfolderBase]: For 757977/757977 co-relation queries the response was YES. [2024-06-27 19:55:07,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57344 conditions, 5907 events. 3949/5907 cut-off events. For 757977/757977 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 30671 event pairs, 915 based on Foata normal form. 1/5905 useless extension candidates. Maximal degree in co-relation 57220. Up to 5875 conditions per place. [2024-06-27 19:55:07,150 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 362 selfloop transitions, 18 changer transitions 0/383 dead transitions. [2024-06-27 19:55:07,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 383 transitions, 5057 flow [2024-06-27 19:55:07,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:55:07,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:55:07,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-27 19:55:07,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 19:55:07,151 INFO L175 Difference]: Start difference. First operand has 273 places, 370 transitions, 4207 flow. Second operand 8 states and 112 transitions. [2024-06-27 19:55:07,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 383 transitions, 5057 flow [2024-06-27 19:55:08,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 383 transitions, 4973 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 19:55:08,050 INFO L231 Difference]: Finished difference. Result has 276 places, 373 transitions, 4235 flow [2024-06-27 19:55:08,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4235, PETRI_PLACES=276, PETRI_TRANSITIONS=373} [2024-06-27 19:55:08,051 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 233 predicate places. [2024-06-27 19:55:08,051 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 373 transitions, 4235 flow [2024-06-27 19:55:08,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:08,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:08,051 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 19:55:08,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 19:55:08,051 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:55:08,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1887570550, now seen corresponding path program 1 times [2024-06-27 19:55:08,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:08,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087255338] [2024-06-27 19:55:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:08,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:11,583 INFO 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 19:55:11,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:11,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087255338] [2024-06-27 19:55:11,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087255338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:11,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:11,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:11,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116431419] [2024-06-27 19:55:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:11,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:11,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:11,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:11,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:55:11,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 373 transitions, 4235 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:11,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:11,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:55:11,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:13,630 INFO L124 PetriNetUnfolderBase]: 3944/5899 cut-off events. [2024-06-27 19:55:13,630 INFO L125 PetriNetUnfolderBase]: For 770068/770068 co-relation queries the response was YES. [2024-06-27 19:55:13,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57601 conditions, 5899 events. 3944/5899 cut-off events. For 770068/770068 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 30535 event pairs, 772 based on Foata normal form. 2/5898 useless extension candidates. Maximal degree in co-relation 57476. Up to 5631 conditions per place. [2024-06-27 19:55:13,708 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 353 selfloop transitions, 53 changer transitions 0/409 dead transitions. [2024-06-27 19:55:13,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 409 transitions, 5187 flow [2024-06-27 19:55:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:55:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:55:13,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 19:55:13,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-27 19:55:13,709 INFO L175 Difference]: Start difference. First operand has 276 places, 373 transitions, 4235 flow. Second operand 9 states and 150 transitions. [2024-06-27 19:55:13,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 409 transitions, 5187 flow [2024-06-27 19:55:14,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 409 transitions, 5045 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 19:55:14,392 INFO L231 Difference]: Finished difference. Result has 279 places, 376 transitions, 4264 flow [2024-06-27 19:55:14,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4093, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4264, PETRI_PLACES=279, PETRI_TRANSITIONS=376} [2024-06-27 19:55:14,392 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-06-27 19:55:14,392 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 376 transitions, 4264 flow [2024-06-27 19:55:14,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:14,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:14,393 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 19:55:14,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 19:55:14,393 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:55:14,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:14,393 INFO L85 PathProgramCache]: Analyzing trace with hash 804523948, now seen corresponding path program 1 times [2024-06-27 19:55:14,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:14,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381563319] [2024-06-27 19:55:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:14,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:17,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:17,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381563319] [2024-06-27 19:55:17,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381563319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:17,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:17,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:17,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974358779] [2024-06-27 19:55:17,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:17,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:17,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:17,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:17,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:17,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:55:17,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 376 transitions, 4264 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:17,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:17,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:55:17,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:19,603 INFO L124 PetriNetUnfolderBase]: 4036/6051 cut-off events. [2024-06-27 19:55:19,603 INFO L125 PetriNetUnfolderBase]: For 846714/846714 co-relation queries the response was YES. [2024-06-27 19:55:19,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59577 conditions, 6051 events. 4036/6051 cut-off events. For 846714/846714 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 31688 event pairs, 777 based on Foata normal form. 20/6068 useless extension candidates. Maximal degree in co-relation 59451. Up to 5686 conditions per place. [2024-06-27 19:55:19,676 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 377 selfloop transitions, 48 changer transitions 0/428 dead transitions. [2024-06-27 19:55:19,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 428 transitions, 5400 flow [2024-06-27 19:55:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 19:55:19,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 19:55:19,677 INFO L175 Difference]: Start difference. First operand has 279 places, 376 transitions, 4264 flow. Second operand 11 states and 182 transitions. [2024-06-27 19:55:19,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 428 transitions, 5400 flow [2024-06-27 19:55:20,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 428 transitions, 5267 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 19:55:20,467 INFO L231 Difference]: Finished difference. Result has 284 places, 379 transitions, 4331 flow [2024-06-27 19:55:20,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4131, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4331, PETRI_PLACES=284, PETRI_TRANSITIONS=379} [2024-06-27 19:55:20,467 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 241 predicate places. [2024-06-27 19:55:20,468 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 379 transitions, 4331 flow [2024-06-27 19:55:20,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:20,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:20,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:20,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 19:55:20,468 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:55:20,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash -393685172, now seen corresponding path program 1 times [2024-06-27 19:55:20,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:20,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803048256] [2024-06-27 19:55:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:20,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:21,905 INFO 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 19:55:21,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:21,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803048256] [2024-06-27 19:55:21,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803048256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:21,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:55:21,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347591234] [2024-06-27 19:55:21,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:21,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:55:21,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:55:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:55:21,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:55:21,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 379 transitions, 4331 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:55:21,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:21,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:55:21,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:23,467 INFO L124 PetriNetUnfolderBase]: 4041/6058 cut-off events. [2024-06-27 19:55:23,468 INFO L125 PetriNetUnfolderBase]: For 804811/804811 co-relation queries the response was YES. [2024-06-27 19:55:23,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59522 conditions, 6058 events. 4041/6058 cut-off events. For 804811/804811 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 31744 event pairs, 809 based on Foata normal form. 1/6056 useless extension candidates. Maximal degree in co-relation 59395. Up to 5987 conditions per place. [2024-06-27 19:55:23,540 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 368 selfloop transitions, 28 changer transitions 0/399 dead transitions. [2024-06-27 19:55:23,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 399 transitions, 5261 flow [2024-06-27 19:55:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:55:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:55:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-27 19:55:23,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741496598639456 [2024-06-27 19:55:23,542 INFO L175 Difference]: Start difference. First operand has 284 places, 379 transitions, 4331 flow. Second operand 7 states and 110 transitions. [2024-06-27 19:55:23,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 399 transitions, 5261 flow [2024-06-27 19:55:24,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 399 transitions, 5039 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-27 19:55:24,589 INFO L231 Difference]: Finished difference. Result has 281 places, 382 transitions, 4267 flow [2024-06-27 19:55:24,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4109, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4267, PETRI_PLACES=281, PETRI_TRANSITIONS=382} [2024-06-27 19:55:24,590 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 238 predicate places. [2024-06-27 19:55:24,590 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 382 transitions, 4267 flow [2024-06-27 19:55:24,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:55:24,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:24,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:55:24,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 19:55:24,590 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:55:24,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:24,591 INFO L85 PathProgramCache]: Analyzing trace with hash -549670010, now seen corresponding path program 2 times [2024-06-27 19:55:24,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:24,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921414493] [2024-06-27 19:55:24,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:26,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:26,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921414493] [2024-06-27 19:55:26,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921414493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:26,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:26,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:55:26,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020711015] [2024-06-27 19:55:26,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:26,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:55:26,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:26,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:55:26,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:55:26,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:55:26,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 382 transitions, 4267 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:55:26,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:26,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:55:26,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:27,626 INFO L124 PetriNetUnfolderBase]: 4046/6065 cut-off events. [2024-06-27 19:55:27,627 INFO L125 PetriNetUnfolderBase]: For 809612/809612 co-relation queries the response was YES. [2024-06-27 19:55:27,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58784 conditions, 6065 events. 4046/6065 cut-off events. For 809612/809612 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 31767 event pairs, 809 based on Foata normal form. 1/6063 useless extension candidates. Maximal degree in co-relation 58657. Up to 6014 conditions per place. [2024-06-27 19:55:27,702 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 374 selfloop transitions, 22 changer transitions 0/399 dead transitions. [2024-06-27 19:55:27,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 399 transitions, 5193 flow [2024-06-27 19:55:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:55:27,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:55:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-27 19:55:27,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36394557823129253 [2024-06-27 19:55:27,703 INFO L175 Difference]: Start difference. First operand has 281 places, 382 transitions, 4267 flow. Second operand 7 states and 107 transitions. [2024-06-27 19:55:27,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 399 transitions, 5193 flow [2024-06-27 19:55:28,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 399 transitions, 5061 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 19:55:28,492 INFO L231 Difference]: Finished difference. Result has 283 places, 385 transitions, 4285 flow [2024-06-27 19:55:28,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4135, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4285, PETRI_PLACES=283, PETRI_TRANSITIONS=385} [2024-06-27 19:55:28,492 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 240 predicate places. [2024-06-27 19:55:28,493 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 385 transitions, 4285 flow [2024-06-27 19:55:28,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:55:28,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:28,493 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 19:55:28,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 19:55:28,493 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:55:28,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:28,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2058582612, now seen corresponding path program 2 times [2024-06-27 19:55:28,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:28,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817856809] [2024-06-27 19:55:28,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:28,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:31,475 INFO 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 19:55:31,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:31,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817856809] [2024-06-27 19:55:31,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817856809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:31,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:31,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:31,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652085591] [2024-06-27 19:55:31,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:31,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:31,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:31,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:31,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:31,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:55:31,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 385 transitions, 4285 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:31,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:31,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:55:31,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:33,834 INFO L124 PetriNetUnfolderBase]: 4121/6190 cut-off events. [2024-06-27 19:55:33,834 INFO L125 PetriNetUnfolderBase]: For 886528/886528 co-relation queries the response was YES. [2024-06-27 19:55:33,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60526 conditions, 6190 events. 4121/6190 cut-off events. For 886528/886528 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 32676 event pairs, 783 based on Foata normal form. 20/6207 useless extension candidates. Maximal degree in co-relation 60398. Up to 5790 conditions per place. [2024-06-27 19:55:33,914 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 374 selfloop transitions, 55 changer transitions 0/432 dead transitions. [2024-06-27 19:55:33,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 432 transitions, 5401 flow [2024-06-27 19:55:33,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:33,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:33,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 19:55:33,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3917748917748918 [2024-06-27 19:55:33,916 INFO L175 Difference]: Start difference. First operand has 283 places, 385 transitions, 4285 flow. Second operand 11 states and 181 transitions. [2024-06-27 19:55:33,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 432 transitions, 5401 flow [2024-06-27 19:55:34,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 432 transitions, 5273 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-27 19:55:34,767 INFO L231 Difference]: Finished difference. Result has 289 places, 386 transitions, 4356 flow [2024-06-27 19:55:34,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4157, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4356, PETRI_PLACES=289, PETRI_TRANSITIONS=386} [2024-06-27 19:55:34,767 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 246 predicate places. [2024-06-27 19:55:34,767 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 386 transitions, 4356 flow [2024-06-27 19:55:34,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:34,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:34,768 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 19:55:34,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 19:55:34,768 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:55:34,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:34,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1892348832, now seen corresponding path program 3 times [2024-06-27 19:55:34,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:34,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432073660] [2024-06-27 19:55:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:34,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:37,582 INFO 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 19:55:37,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:37,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432073660] [2024-06-27 19:55:37,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432073660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:37,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:37,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:37,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208576549] [2024-06-27 19:55:37,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:37,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:37,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:37,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:37,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:37,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:55:37,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 386 transitions, 4356 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:37,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:37,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:55:37,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:39,796 INFO L124 PetriNetUnfolderBase]: 4213/6342 cut-off events. [2024-06-27 19:55:39,796 INFO L125 PetriNetUnfolderBase]: For 923641/923641 co-relation queries the response was YES. [2024-06-27 19:55:39,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62363 conditions, 6342 events. 4213/6342 cut-off events. For 923641/923641 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 33809 event pairs, 800 based on Foata normal form. 20/6359 useless extension candidates. Maximal degree in co-relation 62234. Up to 5726 conditions per place. [2024-06-27 19:55:39,873 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 337 selfloop transitions, 94 changer transitions 0/434 dead transitions. [2024-06-27 19:55:39,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 434 transitions, 5506 flow [2024-06-27 19:55:39,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 19:55:39,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3961038961038961 [2024-06-27 19:55:39,874 INFO L175 Difference]: Start difference. First operand has 289 places, 386 transitions, 4356 flow. Second operand 11 states and 183 transitions. [2024-06-27 19:55:39,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 434 transitions, 5506 flow [2024-06-27 19:55:40,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 434 transitions, 5259 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-27 19:55:40,753 INFO L231 Difference]: Finished difference. Result has 290 places, 388 transitions, 4422 flow [2024-06-27 19:55:40,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4109, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4422, PETRI_PLACES=290, PETRI_TRANSITIONS=388} [2024-06-27 19:55:40,753 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 247 predicate places. [2024-06-27 19:55:40,754 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 388 transitions, 4422 flow [2024-06-27 19:55:40,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:40,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:40,754 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 19:55:40,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 19:55:40,754 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:55:40,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:40,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1886092722, now seen corresponding path program 4 times [2024-06-27 19:55:40,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:40,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708447908] [2024-06-27 19:55:40,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:40,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:43,799 INFO 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 19:55:43,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:43,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708447908] [2024-06-27 19:55:43,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708447908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:43,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:43,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:55:43,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76884692] [2024-06-27 19:55:43,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:43,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:55:43,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:55:43,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:55:43,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:55:43,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 388 transitions, 4422 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:43,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:43,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:55:43,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:46,153 INFO L124 PetriNetUnfolderBase]: 4305/6494 cut-off events. [2024-06-27 19:55:46,153 INFO L125 PetriNetUnfolderBase]: For 949471/949471 co-relation queries the response was YES. [2024-06-27 19:55:46,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63700 conditions, 6494 events. 4305/6494 cut-off events. For 949471/949471 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 34925 event pairs, 815 based on Foata normal form. 20/6511 useless extension candidates. Maximal degree in co-relation 63570. Up to 5743 conditions per place. [2024-06-27 19:55:46,234 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 342 selfloop transitions, 91 changer transitions 0/436 dead transitions. [2024-06-27 19:55:46,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 436 transitions, 5580 flow [2024-06-27 19:55:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:55:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:55:46,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 19:55:46,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 19:55:46,236 INFO L175 Difference]: Start difference. First operand has 290 places, 388 transitions, 4422 flow. Second operand 11 states and 182 transitions. [2024-06-27 19:55:46,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 436 transitions, 5580 flow [2024-06-27 19:55:47,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 436 transitions, 5341 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:47,218 INFO L231 Difference]: Finished difference. Result has 292 places, 390 transitions, 4497 flow [2024-06-27 19:55:47,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4183, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4497, PETRI_PLACES=292, PETRI_TRANSITIONS=390} [2024-06-27 19:55:47,219 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 249 predicate places. [2024-06-27 19:55:47,219 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 390 transitions, 4497 flow [2024-06-27 19:55:47,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:47,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:47,219 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 19:55:47,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 19:55:47,220 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:55:47,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:47,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1885853712, now seen corresponding path program 5 times [2024-06-27 19:55:47,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:47,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314575381] [2024-06-27 19:55:47,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:47,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:49,712 INFO 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 19:55:49,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:49,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314575381] [2024-06-27 19:55:49,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314575381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:49,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:49,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:55:49,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465188253] [2024-06-27 19:55:49,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:49,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:55:49,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:49,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:55:49,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:55:49,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:55:49,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 390 transitions, 4497 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:49,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:49,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:55:49,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:51,840 INFO L124 PetriNetUnfolderBase]: 4363/6592 cut-off events. [2024-06-27 19:55:51,840 INFO L125 PetriNetUnfolderBase]: For 961852/961852 co-relation queries the response was YES. [2024-06-27 19:55:51,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64551 conditions, 6592 events. 4363/6592 cut-off events. For 961852/961852 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 35599 event pairs, 821 based on Foata normal form. 16/6605 useless extension candidates. Maximal degree in co-relation 64420. Up to 5546 conditions per place. [2024-06-27 19:55:51,925 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 344 selfloop transitions, 88 changer transitions 0/435 dead transitions. [2024-06-27 19:55:51,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 435 transitions, 5643 flow [2024-06-27 19:55:51,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:55:51,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:55:51,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 19:55:51,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:55:51,927 INFO L175 Difference]: Start difference. First operand has 292 places, 390 transitions, 4497 flow. Second operand 10 states and 168 transitions. [2024-06-27 19:55:51,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 435 transitions, 5643 flow [2024-06-27 19:55:53,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 435 transitions, 5403 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 19:55:53,094 INFO L231 Difference]: Finished difference. Result has 293 places, 391 transitions, 4527 flow [2024-06-27 19:55:53,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4257, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4527, PETRI_PLACES=293, PETRI_TRANSITIONS=391} [2024-06-27 19:55:53,095 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-27 19:55:53,095 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 391 transitions, 4527 flow [2024-06-27 19:55:53,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:53,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:53,095 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 19:55:53,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 19:55:53,095 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:55:53,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:53,096 INFO L85 PathProgramCache]: Analyzing trace with hash 96272120, now seen corresponding path program 1 times [2024-06-27 19:55:53,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:53,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810232184] [2024-06-27 19:55:53,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:53,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:55:54,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:54,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810232184] [2024-06-27 19:55:54,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810232184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:54,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:54,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:55:54,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559524301] [2024-06-27 19:55:54,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:54,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:55:54,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:55:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:55:54,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:55:54,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 391 transitions, 4527 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:54,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:54,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:55:54,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:55:56,694 INFO L124 PetriNetUnfolderBase]: 4373/6606 cut-off events. [2024-06-27 19:55:56,694 INFO L125 PetriNetUnfolderBase]: For 936793/936793 co-relation queries the response was YES. [2024-06-27 19:55:56,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64454 conditions, 6606 events. 4373/6606 cut-off events. For 936793/936793 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 35824 event pairs, 898 based on Foata normal form. 2/6605 useless extension candidates. Maximal degree in co-relation 64322. Up to 6477 conditions per place. [2024-06-27 19:55:56,779 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 379 selfloop transitions, 34 changer transitions 0/416 dead transitions. [2024-06-27 19:55:56,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 416 transitions, 5485 flow [2024-06-27 19:55:56,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:55:56,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:55:56,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-27 19:55:56,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37797619047619047 [2024-06-27 19:55:56,781 INFO L175 Difference]: Start difference. First operand has 293 places, 391 transitions, 4527 flow. Second operand 8 states and 127 transitions. [2024-06-27 19:55:56,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 416 transitions, 5485 flow [2024-06-27 19:55:57,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 416 transitions, 5245 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 19:55:57,755 INFO L231 Difference]: Finished difference. Result has 293 places, 394 transitions, 4433 flow [2024-06-27 19:55:57,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4287, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4433, PETRI_PLACES=293, PETRI_TRANSITIONS=394} [2024-06-27 19:55:57,756 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-27 19:55:57,756 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 394 transitions, 4433 flow [2024-06-27 19:55:57,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:57,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:55:57,756 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 19:55:57,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 19:55:57,757 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:55:57,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:55:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash -387010004, now seen corresponding path program 1 times [2024-06-27 19:55:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:55:57,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819062803] [2024-06-27 19:55:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:55:57,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:55:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:55:59,659 INFO 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 19:55:59,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:55:59,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819062803] [2024-06-27 19:55:59,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819062803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:55:59,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:55:59,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:55:59,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300721130] [2024-06-27 19:55:59,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:55:59,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:55:59,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:55:59,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:55:59,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:55:59,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:55:59,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 394 transitions, 4433 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:55:59,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:55:59,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:55:59,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:01,379 INFO L124 PetriNetUnfolderBase]: 4383/6620 cut-off events. [2024-06-27 19:56:01,379 INFO L125 PetriNetUnfolderBase]: For 942901/942901 co-relation queries the response was YES. [2024-06-27 19:56:01,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64450 conditions, 6620 events. 4383/6620 cut-off events. For 942901/942901 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 35860 event pairs, 897 based on Foata normal form. 2/6619 useless extension candidates. Maximal degree in co-relation 64317. Up to 6563 conditions per place. [2024-06-27 19:56:01,464 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 385 selfloop transitions, 25 changer transitions 0/413 dead transitions. [2024-06-27 19:56:01,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 413 transitions, 5379 flow [2024-06-27 19:56:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:56:01,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:56:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-27 19:56:01,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 19:56:01,466 INFO L175 Difference]: Start difference. First operand has 293 places, 394 transitions, 4433 flow. Second operand 8 states and 119 transitions. [2024-06-27 19:56:01,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 413 transitions, 5379 flow [2024-06-27 19:56:02,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 413 transitions, 5255 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 19:56:02,332 INFO L231 Difference]: Finished difference. Result has 295 places, 397 transitions, 4447 flow [2024-06-27 19:56:02,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4309, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4447, PETRI_PLACES=295, PETRI_TRANSITIONS=397} [2024-06-27 19:56:02,333 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 252 predicate places. [2024-06-27 19:56:02,333 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 397 transitions, 4447 flow [2024-06-27 19:56:02,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:02,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:02,333 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 19:56:02,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 19:56:02,334 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:56:02,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:02,334 INFO L85 PathProgramCache]: Analyzing trace with hash 106461200, now seen corresponding path program 2 times [2024-06-27 19:56:02,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:02,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383698031] [2024-06-27 19:56:02,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:02,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:04,208 INFO 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 19:56:04,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:04,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383698031] [2024-06-27 19:56:04,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383698031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:04,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:04,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:56:04,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883729071] [2024-06-27 19:56:04,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:04,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:56:04,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:04,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:56:04,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:56:04,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:56:04,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 397 transitions, 4447 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:04,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:04,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:56:04,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:05,924 INFO L124 PetriNetUnfolderBase]: 4409/6656 cut-off events. [2024-06-27 19:56:05,924 INFO L125 PetriNetUnfolderBase]: For 966745/966745 co-relation queries the response was YES. [2024-06-27 19:56:05,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65419 conditions, 6656 events. 4409/6656 cut-off events. For 966745/966745 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 36052 event pairs, 903 based on Foata normal form. 2/6655 useless extension candidates. Maximal degree in co-relation 65285. Up to 6494 conditions per place. [2024-06-27 19:56:06,008 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 375 selfloop transitions, 44 changer transitions 0/422 dead transitions. [2024-06-27 19:56:06,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 422 transitions, 5657 flow [2024-06-27 19:56:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:56:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:56:06,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-27 19:56:06,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:56:06,010 INFO L175 Difference]: Start difference. First operand has 295 places, 397 transitions, 4447 flow. Second operand 8 states and 126 transitions. [2024-06-27 19:56:06,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 422 transitions, 5657 flow [2024-06-27 19:56:06,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 422 transitions, 5543 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 19:56:06,979 INFO L231 Difference]: Finished difference. Result has 297 places, 403 transitions, 4581 flow [2024-06-27 19:56:06,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4333, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4581, PETRI_PLACES=297, PETRI_TRANSITIONS=403} [2024-06-27 19:56:06,980 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 254 predicate places. [2024-06-27 19:56:06,980 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 403 transitions, 4581 flow [2024-06-27 19:56:06,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:06,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:06,980 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 19:56:06,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 19:56:06,980 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:56:06,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:06,981 INFO L85 PathProgramCache]: Analyzing trace with hash -387022528, now seen corresponding path program 3 times [2024-06-27 19:56:06,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:06,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008861085] [2024-06-27 19:56:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:06,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:08,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:08,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008861085] [2024-06-27 19:56:08,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008861085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:08,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:08,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:56:08,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521205237] [2024-06-27 19:56:08,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:08,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:56:08,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:08,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:56:08,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:56:09,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:56:09,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 403 transitions, 4581 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:09,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:09,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:56:09,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:10,741 INFO L124 PetriNetUnfolderBase]: 4403/6648 cut-off events. [2024-06-27 19:56:10,741 INFO L125 PetriNetUnfolderBase]: For 983028/983028 co-relation queries the response was YES. [2024-06-27 19:56:10,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65804 conditions, 6648 events. 4403/6648 cut-off events. For 983028/983028 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 36039 event pairs, 903 based on Foata normal form. 2/6647 useless extension candidates. Maximal degree in co-relation 65669. Up to 6506 conditions per place. [2024-06-27 19:56:10,821 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 382 selfloop transitions, 36 changer transitions 0/421 dead transitions. [2024-06-27 19:56:10,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 421 transitions, 5471 flow [2024-06-27 19:56:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:56:10,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:56:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-27 19:56:10,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-27 19:56:10,823 INFO L175 Difference]: Start difference. First operand has 297 places, 403 transitions, 4581 flow. Second operand 8 states and 124 transitions. [2024-06-27 19:56:10,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 421 transitions, 5471 flow [2024-06-27 19:56:11,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 421 transitions, 5304 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-27 19:56:11,662 INFO L231 Difference]: Finished difference. Result has 301 places, 403 transitions, 4492 flow [2024-06-27 19:56:11,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4414, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4492, PETRI_PLACES=301, PETRI_TRANSITIONS=403} [2024-06-27 19:56:11,663 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 258 predicate places. [2024-06-27 19:56:11,663 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 403 transitions, 4492 flow [2024-06-27 19:56:11,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:11,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:11,663 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 19:56:11,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 19:56:11,663 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:56:11,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:11,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1295896290, now seen corresponding path program 3 times [2024-06-27 19:56:11,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:11,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198291182] [2024-06-27 19:56:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:11,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:13,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198291182] [2024-06-27 19:56:13,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198291182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:13,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:13,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:56:13,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947678199] [2024-06-27 19:56:13,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:13,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:56:13,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:13,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:56:13,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:56:13,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:56:13,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 403 transitions, 4492 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:56:13,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:13,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:56:13,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:14,809 INFO L124 PetriNetUnfolderBase]: 4408/6656 cut-off events. [2024-06-27 19:56:14,809 INFO L125 PetriNetUnfolderBase]: For 999209/999215 co-relation queries the response was YES. [2024-06-27 19:56:14,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66074 conditions, 6656 events. 4408/6656 cut-off events. For 999209/999215 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 36111 event pairs, 904 based on Foata normal form. 5/6653 useless extension candidates. Maximal degree in co-relation 65937. Up to 6570 conditions per place. [2024-06-27 19:56:14,892 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 386 selfloop transitions, 32 changer transitions 0/421 dead transitions. [2024-06-27 19:56:14,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 421 transitions, 5474 flow [2024-06-27 19:56:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:56:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:56:14,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-27 19:56:14,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707482993197279 [2024-06-27 19:56:14,893 INFO L175 Difference]: Start difference. First operand has 301 places, 403 transitions, 4492 flow. Second operand 7 states and 109 transitions. [2024-06-27 19:56:14,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 421 transitions, 5474 flow [2024-06-27 19:56:15,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 421 transitions, 5382 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 19:56:15,940 INFO L231 Difference]: Finished difference. Result has 301 places, 406 transitions, 4578 flow [2024-06-27 19:56:15,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4400, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4578, PETRI_PLACES=301, PETRI_TRANSITIONS=406} [2024-06-27 19:56:15,940 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 258 predicate places. [2024-06-27 19:56:15,940 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 406 transitions, 4578 flow [2024-06-27 19:56:15,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:56:15,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:15,940 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 19:56:15,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 19:56:15,941 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:56:15,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:15,941 INFO L85 PathProgramCache]: Analyzing trace with hash 757238338, now seen corresponding path program 4 times [2024-06-27 19:56:15,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:15,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372466846] [2024-06-27 19:56:15,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:15,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:17,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:17,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372466846] [2024-06-27 19:56:17,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372466846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:17,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:17,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:56:17,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305040205] [2024-06-27 19:56:17,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:17,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:56:17,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:17,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:56:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:56:17,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:56:17,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 406 transitions, 4578 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:56:17,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:17,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:56:17,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:19,159 INFO L124 PetriNetUnfolderBase]: 4413/6663 cut-off events. [2024-06-27 19:56:19,159 INFO L125 PetriNetUnfolderBase]: For 1021870/1021876 co-relation queries the response was YES. [2024-06-27 19:56:19,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66732 conditions, 6663 events. 4413/6663 cut-off events. For 1021870/1021876 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 36095 event pairs, 899 based on Foata normal form. 5/6660 useless extension candidates. Maximal degree in co-relation 66594. Up to 6564 conditions per place. [2024-06-27 19:56:19,248 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 378 selfloop transitions, 40 changer transitions 0/421 dead transitions. [2024-06-27 19:56:19,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 421 transitions, 5556 flow [2024-06-27 19:56:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:56:19,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:56:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-27 19:56:19,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36394557823129253 [2024-06-27 19:56:19,249 INFO L175 Difference]: Start difference. First operand has 301 places, 406 transitions, 4578 flow. Second operand 7 states and 107 transitions. [2024-06-27 19:56:19,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 421 transitions, 5556 flow [2024-06-27 19:56:20,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 421 transitions, 5400 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 19:56:20,249 INFO L231 Difference]: Finished difference. Result has 303 places, 409 transitions, 4622 flow [2024-06-27 19:56:20,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4422, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4622, PETRI_PLACES=303, PETRI_TRANSITIONS=409} [2024-06-27 19:56:20,250 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 260 predicate places. [2024-06-27 19:56:20,250 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 409 transitions, 4622 flow [2024-06-27 19:56:20,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:56:20,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:20,250 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 19:56:20,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 19:56:20,250 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:56:20,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:20,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1859746338, now seen corresponding path program 5 times [2024-06-27 19:56:20,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:20,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507395477] [2024-06-27 19:56:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:20,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:21,884 INFO 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 19:56:21,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:21,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507395477] [2024-06-27 19:56:21,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507395477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:21,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:21,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:56:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400910066] [2024-06-27 19:56:21,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:21,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:56:21,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:21,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:56:21,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:56:21,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:56:21,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 409 transitions, 4622 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:56:21,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:21,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:56:21,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:23,536 INFO L124 PetriNetUnfolderBase]: 4418/6670 cut-off events. [2024-06-27 19:56:23,536 INFO L125 PetriNetUnfolderBase]: For 1044365/1044371 co-relation queries the response was YES. [2024-06-27 19:56:23,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67357 conditions, 6670 events. 4418/6670 cut-off events. For 1044365/1044371 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 36156 event pairs, 899 based on Foata normal form. 5/6667 useless extension candidates. Maximal degree in co-relation 67218. Up to 6602 conditions per place. [2024-06-27 19:56:23,624 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 388 selfloop transitions, 34 changer transitions 0/425 dead transitions. [2024-06-27 19:56:23,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 425 transitions, 5896 flow [2024-06-27 19:56:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:56:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:56:23,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-27 19:56:23,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-27 19:56:23,625 INFO L175 Difference]: Start difference. First operand has 303 places, 409 transitions, 4622 flow. Second operand 7 states and 105 transitions. [2024-06-27 19:56:23,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 425 transitions, 5896 flow [2024-06-27 19:56:24,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 425 transitions, 5718 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-27 19:56:24,770 INFO L231 Difference]: Finished difference. Result has 305 places, 415 transitions, 4752 flow [2024-06-27 19:56:24,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4444, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4752, PETRI_PLACES=305, PETRI_TRANSITIONS=415} [2024-06-27 19:56:24,771 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 262 predicate places. [2024-06-27 19:56:24,771 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 415 transitions, 4752 flow [2024-06-27 19:56:24,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:56:24,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:24,771 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 19:56:24,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 19:56:24,771 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:56:24,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:24,772 INFO L85 PathProgramCache]: Analyzing trace with hash -881115422, now seen corresponding path program 6 times [2024-06-27 19:56:24,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:24,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935979801] [2024-06-27 19:56:24,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:24,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:26,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:26,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:26,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935979801] [2024-06-27 19:56:26,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935979801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:26,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:26,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:56:26,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668440999] [2024-06-27 19:56:26,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:26,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:56:26,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:26,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:56:26,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:56:26,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:56:26,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 415 transitions, 4752 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:56:26,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:26,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:56:26,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:27,882 INFO L124 PetriNetUnfolderBase]: 4415/6666 cut-off events. [2024-06-27 19:56:27,882 INFO L125 PetriNetUnfolderBase]: For 1064778/1064784 co-relation queries the response was YES. [2024-06-27 19:56:27,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67646 conditions, 6666 events. 4415/6666 cut-off events. For 1064778/1064784 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 36162 event pairs, 902 based on Foata normal form. 5/6663 useless extension candidates. Maximal degree in co-relation 67506. Up to 6608 conditions per place. [2024-06-27 19:56:27,972 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 395 selfloop transitions, 26 changer transitions 0/424 dead transitions. [2024-06-27 19:56:27,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 424 transitions, 5618 flow [2024-06-27 19:56:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:56:27,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:56:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-27 19:56:27,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35034013605442177 [2024-06-27 19:56:27,973 INFO L175 Difference]: Start difference. First operand has 305 places, 415 transitions, 4752 flow. Second operand 7 states and 103 transitions. [2024-06-27 19:56:27,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 424 transitions, 5618 flow [2024-06-27 19:56:28,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 424 transitions, 5385 flow, removed 103 selfloop flow, removed 3 redundant places. [2024-06-27 19:56:28,958 INFO L231 Difference]: Finished difference. Result has 309 places, 415 transitions, 4577 flow [2024-06-27 19:56:28,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4519, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4577, PETRI_PLACES=309, PETRI_TRANSITIONS=415} [2024-06-27 19:56:28,958 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 266 predicate places. [2024-06-27 19:56:28,959 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 415 transitions, 4577 flow [2024-06-27 19:56:28,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 19:56:28,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:28,959 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 19:56:28,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 19:56:28,959 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:56:28,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:28,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1978350832, now seen corresponding path program 6 times [2024-06-27 19:56:28,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:28,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116243860] [2024-06-27 19:56:28,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:28,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:31,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:31,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116243860] [2024-06-27 19:56:31,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116243860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:31,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:31,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:56:31,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353769452] [2024-06-27 19:56:31,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:31,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:56:31,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:31,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:56:31,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:56:32,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:56:32,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 415 transitions, 4577 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:32,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:32,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:56:32,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:34,279 INFO L124 PetriNetUnfolderBase]: 4676/7097 cut-off events. [2024-06-27 19:56:34,279 INFO L125 PetriNetUnfolderBase]: For 1218503/1218509 co-relation queries the response was YES. [2024-06-27 19:56:34,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73168 conditions, 7097 events. 4676/7097 cut-off events. For 1218503/1218509 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 39399 event pairs, 864 based on Foata normal form. 20/7109 useless extension candidates. Maximal degree in co-relation 73026. Up to 5809 conditions per place. [2024-06-27 19:56:34,364 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 317 selfloop transitions, 144 changer transitions 0/464 dead transitions. [2024-06-27 19:56:34,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 464 transitions, 6216 flow [2024-06-27 19:56:34,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:56:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:56:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 19:56:34,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-27 19:56:34,366 INFO L175 Difference]: Start difference. First operand has 309 places, 415 transitions, 4577 flow. Second operand 10 states and 174 transitions. [2024-06-27 19:56:34,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 464 transitions, 6216 flow [2024-06-27 19:56:35,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 464 transitions, 6146 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:56:35,552 INFO L231 Difference]: Finished difference. Result has 314 places, 418 transitions, 5014 flow [2024-06-27 19:56:35,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4507, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5014, PETRI_PLACES=314, PETRI_TRANSITIONS=418} [2024-06-27 19:56:35,552 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 271 predicate places. [2024-06-27 19:56:35,552 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 418 transitions, 5014 flow [2024-06-27 19:56:35,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:35,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:35,553 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 19:56:35,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 19:56:35,553 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:56:35,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:35,553 INFO L85 PathProgramCache]: Analyzing trace with hash 326695434, now seen corresponding path program 7 times [2024-06-27 19:56:35,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:35,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104809631] [2024-06-27 19:56:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:35,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:38,124 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 19:56:38,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:38,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104809631] [2024-06-27 19:56:38,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104809631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:38,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:38,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:56:38,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493953544] [2024-06-27 19:56:38,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:38,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:56:38,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:38,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:56:38,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:56:38,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:56:38,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 418 transitions, 5014 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:38,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:38,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:56:38,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:40,243 INFO L124 PetriNetUnfolderBase]: 4879/7430 cut-off events. [2024-06-27 19:56:40,243 INFO L125 PetriNetUnfolderBase]: For 1340936/1340942 co-relation queries the response was YES. [2024-06-27 19:56:40,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79166 conditions, 7430 events. 4879/7430 cut-off events. For 1340936/1340942 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 41745 event pairs, 872 based on Foata normal form. 20/7442 useless extension candidates. Maximal degree in co-relation 79022. Up to 4826 conditions per place. [2024-06-27 19:56:40,343 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 308 selfloop transitions, 158 changer transitions 0/469 dead transitions. [2024-06-27 19:56:40,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 469 transitions, 6702 flow [2024-06-27 19:56:40,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:56:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:56:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 19:56:40,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-27 19:56:40,344 INFO L175 Difference]: Start difference. First operand has 314 places, 418 transitions, 5014 flow. Second operand 10 states and 172 transitions. [2024-06-27 19:56:40,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 469 transitions, 6702 flow [2024-06-27 19:56:41,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 469 transitions, 6473 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 19:56:41,709 INFO L231 Difference]: Finished difference. Result has 319 places, 422 transitions, 5406 flow [2024-06-27 19:56:41,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4785, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5406, PETRI_PLACES=319, PETRI_TRANSITIONS=422} [2024-06-27 19:56:41,709 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 276 predicate places. [2024-06-27 19:56:41,709 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 422 transitions, 5406 flow [2024-06-27 19:56:41,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:41,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:41,710 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 19:56:41,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 19:56:41,710 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:56:41,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:41,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1693011952, now seen corresponding path program 8 times [2024-06-27 19:56:41,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:41,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74023313] [2024-06-27 19:56:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:41,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:56:45,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:45,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74023313] [2024-06-27 19:56:45,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74023313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:45,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:45,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:56:45,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113730263] [2024-06-27 19:56:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:45,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:56:45,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:56:45,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:56:45,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:56:45,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 422 transitions, 5406 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:45,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:45,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:56:45,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:47,854 INFO L124 PetriNetUnfolderBase]: 4843/7374 cut-off events. [2024-06-27 19:56:47,854 INFO L125 PetriNetUnfolderBase]: For 1312570/1312576 co-relation queries the response was YES. [2024-06-27 19:56:47,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77861 conditions, 7374 events. 4843/7374 cut-off events. For 1312570/1312576 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 41642 event pairs, 930 based on Foata normal form. 24/7390 useless extension candidates. Maximal degree in co-relation 77714. Up to 6242 conditions per place. [2024-06-27 19:56:47,957 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 320 selfloop transitions, 144 changer transitions 0/467 dead transitions. [2024-06-27 19:56:47,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 467 transitions, 6523 flow [2024-06-27 19:56:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:56:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:56:47,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 19:56:47,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39826839826839827 [2024-06-27 19:56:47,958 INFO L175 Difference]: Start difference. First operand has 319 places, 422 transitions, 5406 flow. Second operand 11 states and 184 transitions. [2024-06-27 19:56:47,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 467 transitions, 6523 flow [2024-06-27 19:56:49,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 467 transitions, 6227 flow, removed 67 selfloop flow, removed 6 redundant places. [2024-06-27 19:56:49,951 INFO L231 Difference]: Finished difference. Result has 324 places, 422 transitions, 5408 flow [2024-06-27 19:56:49,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5110, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5408, PETRI_PLACES=324, PETRI_TRANSITIONS=422} [2024-06-27 19:56:49,951 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 281 predicate places. [2024-06-27 19:56:49,951 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 422 transitions, 5408 flow [2024-06-27 19:56:49,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:49,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:49,952 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 19:56:49,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 19:56:49,952 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:56:49,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:49,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1963297552, now seen corresponding path program 9 times [2024-06-27 19:56:49,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:49,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131636443] [2024-06-27 19:56:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:49,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:56:52,655 INFO 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 19:56:52,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:56:52,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131636443] [2024-06-27 19:56:52,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131636443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:56:52,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:56:52,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:56:52,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309689209] [2024-06-27 19:56:52,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:56:52,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:56:52,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:56:52,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:56:52,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:56:52,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:56:52,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 422 transitions, 5408 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:52,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:56:52,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:56:52,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:56:55,277 INFO L124 PetriNetUnfolderBase]: 5012/7653 cut-off events. [2024-06-27 19:56:55,277 INFO L125 PetriNetUnfolderBase]: For 1391773/1391779 co-relation queries the response was YES. [2024-06-27 19:56:55,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82359 conditions, 7653 events. 5012/7653 cut-off events. For 1391773/1391779 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 43768 event pairs, 999 based on Foata normal form. 20/7665 useless extension candidates. Maximal degree in co-relation 82210. Up to 6345 conditions per place. [2024-06-27 19:56:55,375 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 332 selfloop transitions, 136 changer transitions 0/471 dead transitions. [2024-06-27 19:56:55,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 471 transitions, 7068 flow [2024-06-27 19:56:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:56:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:56:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 19:56:55,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-27 19:56:55,377 INFO L175 Difference]: Start difference. First operand has 324 places, 422 transitions, 5408 flow. Second operand 10 states and 176 transitions. [2024-06-27 19:56:55,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 471 transitions, 7068 flow [2024-06-27 19:56:56,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 471 transitions, 6775 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 19:56:56,788 INFO L231 Difference]: Finished difference. Result has 324 places, 424 transitions, 5581 flow [2024-06-27 19:56:56,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5115, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5581, PETRI_PLACES=324, PETRI_TRANSITIONS=424} [2024-06-27 19:56:56,789 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 281 predicate places. [2024-06-27 19:56:56,789 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 424 transitions, 5581 flow [2024-06-27 19:56:56,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:56:56,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:56:56,789 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 19:56:56,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 19:56:56,789 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:56:56,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:56:56,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1969792672, now seen corresponding path program 10 times [2024-06-27 19:56:56,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:56:56,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229090544] [2024-06-27 19:56:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:56:56,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:56:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:00,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:00,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229090544] [2024-06-27 19:57:00,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229090544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:00,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:00,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:00,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180704278] [2024-06-27 19:57:00,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:00,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:00,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:00,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:00,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:00,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:57:00,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 424 transitions, 5581 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:00,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:00,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:57:00,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:02,958 INFO L124 PetriNetUnfolderBase]: 5104/7805 cut-off events. [2024-06-27 19:57:02,958 INFO L125 PetriNetUnfolderBase]: For 1453616/1453622 co-relation queries the response was YES. [2024-06-27 19:57:03,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84236 conditions, 7805 events. 5104/7805 cut-off events. For 1453616/1453622 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 45078 event pairs, 1042 based on Foata normal form. 24/7821 useless extension candidates. Maximal degree in co-relation 84086. Up to 7165 conditions per place. [2024-06-27 19:57:03,057 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 374 selfloop transitions, 101 changer transitions 0/478 dead transitions. [2024-06-27 19:57:03,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 478 transitions, 6953 flow [2024-06-27 19:57:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:03,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 19:57:03,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 19:57:03,059 INFO L175 Difference]: Start difference. First operand has 324 places, 424 transitions, 5581 flow. Second operand 11 states and 182 transitions. [2024-06-27 19:57:03,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 478 transitions, 6953 flow [2024-06-27 19:57:05,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 478 transitions, 6712 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 19:57:05,077 INFO L231 Difference]: Finished difference. Result has 330 places, 435 transitions, 5887 flow [2024-06-27 19:57:05,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5353, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5887, PETRI_PLACES=330, PETRI_TRANSITIONS=435} [2024-06-27 19:57:05,077 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2024-06-27 19:57:05,077 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 435 transitions, 5887 flow [2024-06-27 19:57:05,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:05,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:05,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:05,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 19:57:05,078 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:57:05,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:05,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1939465726, now seen corresponding path program 11 times [2024-06-27 19:57:05,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:05,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216980160] [2024-06-27 19:57:05,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:05,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:08,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:08,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216980160] [2024-06-27 19:57:08,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216980160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:08,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:08,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:08,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601753500] [2024-06-27 19:57:08,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:08,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:08,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:08,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:08,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:08,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:57:08,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 435 transitions, 5887 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:08,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:08,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:57:08,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:10,919 INFO L124 PetriNetUnfolderBase]: 5196/7957 cut-off events. [2024-06-27 19:57:10,919 INFO L125 PetriNetUnfolderBase]: For 1487300/1487306 co-relation queries the response was YES. [2024-06-27 19:57:11,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86268 conditions, 7957 events. 5196/7957 cut-off events. For 1487300/1487306 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 46238 event pairs, 1103 based on Foata normal form. 24/7973 useless extension candidates. Maximal degree in co-relation 86115. Up to 7576 conditions per place. [2024-06-27 19:57:11,039 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 420 selfloop transitions, 58 changer transitions 0/481 dead transitions. [2024-06-27 19:57:11,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 481 transitions, 7145 flow [2024-06-27 19:57:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:57:11,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:57:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-27 19:57:11,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37896825396825395 [2024-06-27 19:57:11,041 INFO L175 Difference]: Start difference. First operand has 330 places, 435 transitions, 5887 flow. Second operand 12 states and 191 transitions. [2024-06-27 19:57:11,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 481 transitions, 7145 flow [2024-06-27 19:57:13,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 481 transitions, 6925 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 19:57:13,195 INFO L231 Difference]: Finished difference. Result has 335 places, 437 transitions, 5918 flow [2024-06-27 19:57:13,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5667, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5918, PETRI_PLACES=335, PETRI_TRANSITIONS=437} [2024-06-27 19:57:13,196 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 292 predicate places. [2024-06-27 19:57:13,196 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 437 transitions, 5918 flow [2024-06-27 19:57:13,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:13,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:13,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:57:13,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 19:57:13,196 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:57:13,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:13,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1963536562, now seen corresponding path program 12 times [2024-06-27 19:57:13,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:13,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49633455] [2024-06-27 19:57:13,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:13,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:16,484 INFO 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 19:57:16,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:16,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49633455] [2024-06-27 19:57:16,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49633455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:16,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:16,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:16,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062444964] [2024-06-27 19:57:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:16,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:16,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:16,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:16,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:57:16,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 437 transitions, 5918 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:16,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:16,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:57:16,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:19,167 INFO L124 PetriNetUnfolderBase]: 5221/8004 cut-off events. [2024-06-27 19:57:19,167 INFO L125 PetriNetUnfolderBase]: For 1484169/1484175 co-relation queries the response was YES. [2024-06-27 19:57:19,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85658 conditions, 8004 events. 5221/8004 cut-off events. For 1484169/1484175 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 46730 event pairs, 1069 based on Foata normal form. 24/8020 useless extension candidates. Maximal degree in co-relation 85504. Up to 7364 conditions per place. [2024-06-27 19:57:19,282 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 381 selfloop transitions, 101 changer transitions 0/485 dead transitions. [2024-06-27 19:57:19,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 485 transitions, 7200 flow [2024-06-27 19:57:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 19:57:19,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39826839826839827 [2024-06-27 19:57:19,283 INFO L175 Difference]: Start difference. First operand has 335 places, 437 transitions, 5918 flow. Second operand 11 states and 184 transitions. [2024-06-27 19:57:19,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 485 transitions, 7200 flow [2024-06-27 19:57:22,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 485 transitions, 7021 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:22,028 INFO L231 Difference]: Finished difference. Result has 336 places, 441 transitions, 6099 flow [2024-06-27 19:57:22,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5739, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6099, PETRI_PLACES=336, PETRI_TRANSITIONS=441} [2024-06-27 19:57:22,028 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 293 predicate places. [2024-06-27 19:57:22,028 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 441 transitions, 6099 flow [2024-06-27 19:57:22,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:22,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:22,028 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 19:57:22,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 19:57:22,029 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:57:22,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:22,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2105699506, now seen corresponding path program 13 times [2024-06-27 19:57:22,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:22,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145064472] [2024-06-27 19:57:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:22,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:25,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:25,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145064472] [2024-06-27 19:57:25,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145064472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:25,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:25,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:25,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683593112] [2024-06-27 19:57:25,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:25,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:25,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:25,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:25,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:25,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:57:25,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 441 transitions, 6099 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:25,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:25,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:57:25,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:28,229 INFO L124 PetriNetUnfolderBase]: 5271/8093 cut-off events. [2024-06-27 19:57:28,229 INFO L125 PetriNetUnfolderBase]: For 1496965/1496971 co-relation queries the response was YES. [2024-06-27 19:57:28,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86304 conditions, 8093 events. 5271/8093 cut-off events. For 1496965/1496971 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 47370 event pairs, 1094 based on Foata normal form. 24/8103 useless extension candidates. Maximal degree in co-relation 86149. Up to 7653 conditions per place. [2024-06-27 19:57:28,343 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 424 selfloop transitions, 59 changer transitions 0/486 dead transitions. [2024-06-27 19:57:28,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 486 transitions, 7331 flow [2024-06-27 19:57:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:28,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 19:57:28,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-27 19:57:28,345 INFO L175 Difference]: Start difference. First operand has 336 places, 441 transitions, 6099 flow. Second operand 11 states and 180 transitions. [2024-06-27 19:57:28,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 486 transitions, 7331 flow [2024-06-27 19:57:30,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 486 transitions, 7072 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 19:57:30,799 INFO L231 Difference]: Finished difference. Result has 340 places, 442 transitions, 6057 flow [2024-06-27 19:57:30,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5840, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6057, PETRI_PLACES=340, PETRI_TRANSITIONS=442} [2024-06-27 19:57:30,799 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 297 predicate places. [2024-06-27 19:57:30,800 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 442 transitions, 6057 flow [2024-06-27 19:57:30,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:30,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:30,800 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 19:57:30,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 19:57:30,800 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:57:30,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:30,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1933209616, now seen corresponding path program 14 times [2024-06-27 19:57:30,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:30,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754106897] [2024-06-27 19:57:30,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:30,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:33,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:33,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754106897] [2024-06-27 19:57:33,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754106897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:33,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:33,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:57:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575897262] [2024-06-27 19:57:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:33,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:57:33,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:57:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:57:33,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:57:33,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 442 transitions, 6057 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:33,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:33,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:57:33,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:36,636 INFO L124 PetriNetUnfolderBase]: 5321/8176 cut-off events. [2024-06-27 19:57:36,636 INFO L125 PetriNetUnfolderBase]: For 1508729/1508735 co-relation queries the response was YES. [2024-06-27 19:57:36,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86477 conditions, 8176 events. 5321/8176 cut-off events. For 1508729/1508735 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 48029 event pairs, 1131 based on Foata normal form. 24/8192 useless extension candidates. Maximal degree in co-relation 86321. Up to 7675 conditions per place. [2024-06-27 19:57:36,749 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 429 selfloop transitions, 55 changer transitions 0/487 dead transitions. [2024-06-27 19:57:36,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 487 transitions, 7302 flow [2024-06-27 19:57:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:57:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:57:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 19:57:36,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3917748917748918 [2024-06-27 19:57:36,753 INFO L175 Difference]: Start difference. First operand has 340 places, 442 transitions, 6057 flow. Second operand 11 states and 181 transitions. [2024-06-27 19:57:36,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 487 transitions, 7302 flow [2024-06-27 19:57:38,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 487 transitions, 7121 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 19:57:38,680 INFO L231 Difference]: Finished difference. Result has 342 places, 443 transitions, 6096 flow [2024-06-27 19:57:38,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5876, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6096, PETRI_PLACES=342, PETRI_TRANSITIONS=443} [2024-06-27 19:57:38,681 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 299 predicate places. [2024-06-27 19:57:38,681 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 443 transitions, 6096 flow [2024-06-27 19:57:38,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:38,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:38,682 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 19:57:38,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 19:57:38,682 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:57:38,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:38,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1932970606, now seen corresponding path program 15 times [2024-06-27 19:57:38,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:38,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059323986] [2024-06-27 19:57:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:38,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:41,335 INFO 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 19:57:41,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:41,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059323986] [2024-06-27 19:57:41,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059323986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:41,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:41,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:57:41,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689377350] [2024-06-27 19:57:41,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:41,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:57:41,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:41,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:57:41,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:57:41,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:57:41,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 443 transitions, 6096 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:41,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:41,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:57:41,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:43,731 INFO L124 PetriNetUnfolderBase]: 5293/8132 cut-off events. [2024-06-27 19:57:43,731 INFO L125 PetriNetUnfolderBase]: For 1449007/1449013 co-relation queries the response was YES. [2024-06-27 19:57:43,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84282 conditions, 8132 events. 5293/8132 cut-off events. For 1449007/1449013 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 47690 event pairs, 1091 based on Foata normal form. 20/8144 useless extension candidates. Maximal degree in co-relation 84125. Up to 7373 conditions per place. [2024-06-27 19:57:43,849 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 425 selfloop transitions, 57 changer transitions 0/485 dead transitions. [2024-06-27 19:57:43,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 485 transitions, 7258 flow [2024-06-27 19:57:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:57:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:57:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 19:57:43,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976190476190476 [2024-06-27 19:57:43,850 INFO L175 Difference]: Start difference. First operand has 342 places, 443 transitions, 6096 flow. Second operand 10 states and 167 transitions. [2024-06-27 19:57:43,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 485 transitions, 7258 flow [2024-06-27 19:57:46,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 485 transitions, 6990 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-27 19:57:46,689 INFO L231 Difference]: Finished difference. Result has 342 places, 443 transitions, 5948 flow [2024-06-27 19:57:46,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5828, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5948, PETRI_PLACES=342, PETRI_TRANSITIONS=443} [2024-06-27 19:57:46,690 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 299 predicate places. [2024-06-27 19:57:46,690 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 443 transitions, 5948 flow [2024-06-27 19:57:46,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:46,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:46,690 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 19:57:46,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 19:57:46,691 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:57:46,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:46,691 INFO L85 PathProgramCache]: Analyzing trace with hash -881119018, now seen corresponding path program 4 times [2024-06-27 19:57:46,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:46,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413033759] [2024-06-27 19:57:46,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:46,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:57:48,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:48,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413033759] [2024-06-27 19:57:48,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413033759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:48,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:48,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:57:48,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369517012] [2024-06-27 19:57:48,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:48,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:57:48,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:48,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:57:48,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:57:48,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:57:48,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 443 transitions, 5948 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:48,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:48,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:57:48,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:50,753 INFO L124 PetriNetUnfolderBase]: 5303/8149 cut-off events. [2024-06-27 19:57:50,753 INFO L125 PetriNetUnfolderBase]: For 1409840/1409846 co-relation queries the response was YES. [2024-06-27 19:57:50,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84005 conditions, 8149 events. 5303/8149 cut-off events. For 1409840/1409846 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 47893 event pairs, 1163 based on Foata normal form. 6/8141 useless extension candidates. Maximal degree in co-relation 83847. Up to 7991 conditions per place. [2024-06-27 19:57:50,872 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 414 selfloop transitions, 42 changer transitions 0/459 dead transitions. [2024-06-27 19:57:50,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 459 transitions, 6978 flow [2024-06-27 19:57:50,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:57:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:57:50,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-27 19:57:50,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-27 19:57:50,873 INFO L175 Difference]: Start difference. First operand has 342 places, 443 transitions, 5948 flow. Second operand 8 states and 120 transitions. [2024-06-27 19:57:50,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 459 transitions, 6978 flow [2024-06-27 19:57:53,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 459 transitions, 6472 flow, removed 38 selfloop flow, removed 11 redundant places. [2024-06-27 19:57:53,568 INFO L231 Difference]: Finished difference. Result has 339 places, 446 transitions, 5618 flow [2024-06-27 19:57:53,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5442, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5618, PETRI_PLACES=339, PETRI_TRANSITIONS=446} [2024-06-27 19:57:53,569 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 296 predicate places. [2024-06-27 19:57:53,569 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 446 transitions, 5618 flow [2024-06-27 19:57:53,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:53,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:57:53,569 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 19:57:53,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 19:57:53,569 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:57:53,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:57:53,570 INFO L85 PathProgramCache]: Analyzing trace with hash -881106928, now seen corresponding path program 5 times [2024-06-27 19:57:53,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:57:53,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75538820] [2024-06-27 19:57:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:57:53,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:57:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:57:55,561 INFO 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 19:57:55,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:57:55,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75538820] [2024-06-27 19:57:55,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75538820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:57:55,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:57:55,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:57:55,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358919858] [2024-06-27 19:57:55,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:57:55,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:57:55,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:57:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:57:55,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:57:55,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:57:55,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 446 transitions, 5618 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:57:55,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:57:55,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:57:55,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:57:57,837 INFO L124 PetriNetUnfolderBase]: 5313/8163 cut-off events. [2024-06-27 19:57:57,837 INFO L125 PetriNetUnfolderBase]: For 1416763/1416769 co-relation queries the response was YES. [2024-06-27 19:57:57,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82706 conditions, 8163 events. 5313/8163 cut-off events. For 1416763/1416769 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 48011 event pairs, 1163 based on Foata normal form. 6/8155 useless extension candidates. Maximal degree in co-relation 82549. Up to 7996 conditions per place. [2024-06-27 19:57:57,940 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 413 selfloop transitions, 47 changer transitions 0/463 dead transitions. [2024-06-27 19:57:57,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 463 transitions, 6666 flow [2024-06-27 19:57:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:57:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:57:57,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-27 19:57:57,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-27 19:57:57,942 INFO L175 Difference]: Start difference. First operand has 339 places, 446 transitions, 5618 flow. Second operand 8 states and 123 transitions. [2024-06-27 19:57:57,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 463 transitions, 6666 flow [2024-06-27 19:58:00,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 463 transitions, 6512 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:00,011 INFO L231 Difference]: Finished difference. Result has 341 places, 449 transitions, 5656 flow [2024-06-27 19:58:00,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5464, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5656, PETRI_PLACES=341, PETRI_TRANSITIONS=449} [2024-06-27 19:58:00,011 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 298 predicate places. [2024-06-27 19:58:00,011 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 449 transitions, 5656 flow [2024-06-27 19:58:00,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:00,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:00,012 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 19:58:00,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 19:58:00,012 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:58:00,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:00,012 INFO L85 PathProgramCache]: Analyzing trace with hash -881106494, now seen corresponding path program 2 times [2024-06-27 19:58:00,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:00,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444866355] [2024-06-27 19:58:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:00,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:02,012 INFO 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 19:58:02,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:02,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444866355] [2024-06-27 19:58:02,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444866355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:02,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:02,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:02,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356463658] [2024-06-27 19:58:02,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:02,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:02,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:02,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:02,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:02,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:58:02,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 449 transitions, 5656 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:02,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:02,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:58:02,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:04,126 INFO L124 PetriNetUnfolderBase]: 5323/8174 cut-off events. [2024-06-27 19:58:04,127 INFO L125 PetriNetUnfolderBase]: For 1443616/1443622 co-relation queries the response was YES. [2024-06-27 19:58:04,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83603 conditions, 8174 events. 5323/8174 cut-off events. For 1443616/1443622 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 48028 event pairs, 1151 based on Foata normal form. 6/8172 useless extension candidates. Maximal degree in co-relation 83445. Up to 8110 conditions per place. [2024-06-27 19:58:04,241 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 431 selfloop transitions, 29 changer transitions 0/463 dead transitions. [2024-06-27 19:58:04,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 463 transitions, 6704 flow [2024-06-27 19:58:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-27 19:58:04,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34226190476190477 [2024-06-27 19:58:04,242 INFO L175 Difference]: Start difference. First operand has 341 places, 449 transitions, 5656 flow. Second operand 8 states and 115 transitions. [2024-06-27 19:58:04,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 463 transitions, 6704 flow [2024-06-27 19:58:06,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 463 transitions, 6534 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:06,598 INFO L231 Difference]: Finished difference. Result has 343 places, 452 transitions, 5650 flow [2024-06-27 19:58:06,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5486, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5650, PETRI_PLACES=343, PETRI_TRANSITIONS=452} [2024-06-27 19:58:06,599 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 300 predicate places. [2024-06-27 19:58:06,599 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 452 transitions, 5650 flow [2024-06-27 19:58:06,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:06,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:06,599 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 19:58:06,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 19:58:06,599 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:58:06,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1851627810, now seen corresponding path program 3 times [2024-06-27 19:58:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:06,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770996404] [2024-06-27 19:58:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:06,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:08,684 INFO 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 19:58:08,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:08,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770996404] [2024-06-27 19:58:08,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770996404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:08,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:08,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:08,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103359626] [2024-06-27 19:58:08,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:08,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:08,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:08,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:08,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:08,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:58:08,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 452 transitions, 5650 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:08,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:08,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:58:08,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:10,876 INFO L124 PetriNetUnfolderBase]: 5333/8188 cut-off events. [2024-06-27 19:58:10,876 INFO L125 PetriNetUnfolderBase]: For 1468013/1468013 co-relation queries the response was YES. [2024-06-27 19:58:10,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84209 conditions, 8188 events. 5333/8188 cut-off events. For 1468013/1468013 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 48095 event pairs, 1245 based on Foata normal form. 2/8187 useless extension candidates. Maximal degree in co-relation 84050. Up to 8148 conditions per place. [2024-06-27 19:58:11,006 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 443 selfloop transitions, 20 changer transitions 0/466 dead transitions. [2024-06-27 19:58:11,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 466 transitions, 6710 flow [2024-06-27 19:58:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:11,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-27 19:58:11,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3392857142857143 [2024-06-27 19:58:11,007 INFO L175 Difference]: Start difference. First operand has 343 places, 452 transitions, 5650 flow. Second operand 8 states and 114 transitions. [2024-06-27 19:58:11,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 466 transitions, 6710 flow [2024-06-27 19:58:13,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 466 transitions, 6570 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:13,837 INFO L231 Difference]: Finished difference. Result has 345 places, 455 transitions, 5663 flow [2024-06-27 19:58:13,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5510, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5663, PETRI_PLACES=345, PETRI_TRANSITIONS=455} [2024-06-27 19:58:13,837 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 302 predicate places. [2024-06-27 19:58:13,837 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 455 transitions, 5663 flow [2024-06-27 19:58:13,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:13,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:13,837 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 19:58:13,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 19:58:13,837 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:58:13,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:13,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1851642194, now seen corresponding path program 6 times [2024-06-27 19:58:13,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:13,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021425247] [2024-06-27 19:58:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:13,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:15,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:15,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021425247] [2024-06-27 19:58:15,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021425247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:15,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:15,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:15,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504750704] [2024-06-27 19:58:15,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:15,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:15,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:15,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:15,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:15,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:58:15,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 455 transitions, 5663 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:15,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:15,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:58:15,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:17,808 INFO L124 PetriNetUnfolderBase]: 5327/8183 cut-off events. [2024-06-27 19:58:17,808 INFO L125 PetriNetUnfolderBase]: For 1480577/1480583 co-relation queries the response was YES. [2024-06-27 19:58:17,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84307 conditions, 8183 events. 5327/8183 cut-off events. For 1480577/1480583 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 48116 event pairs, 1162 based on Foata normal form. 6/8175 useless extension candidates. Maximal degree in co-relation 84147. Up to 7979 conditions per place. [2024-06-27 19:58:17,931 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 403 selfloop transitions, 65 changer transitions 0/471 dead transitions. [2024-06-27 19:58:17,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 471 transitions, 6733 flow [2024-06-27 19:58:17,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-27 19:58:17,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3630952380952381 [2024-06-27 19:58:17,932 INFO L175 Difference]: Start difference. First operand has 345 places, 455 transitions, 5663 flow. Second operand 8 states and 122 transitions. [2024-06-27 19:58:17,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 471 transitions, 6733 flow [2024-06-27 19:58:20,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 471 transitions, 6606 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:20,102 INFO L231 Difference]: Finished difference. Result has 347 places, 458 transitions, 5774 flow [2024-06-27 19:58:20,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5536, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5774, PETRI_PLACES=347, PETRI_TRANSITIONS=458} [2024-06-27 19:58:20,103 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 304 predicate places. [2024-06-27 19:58:20,103 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 458 transitions, 5774 flow [2024-06-27 19:58:20,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:20,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:20,103 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 19:58:20,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 19:58:20,103 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:58:20,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:20,103 INFO L85 PathProgramCache]: Analyzing trace with hash -42520334, now seen corresponding path program 4 times [2024-06-27 19:58:20,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:20,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764083945] [2024-06-27 19:58:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:20,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:22,138 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 19:58:22,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:22,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764083945] [2024-06-27 19:58:22,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764083945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:22,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:22,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:22,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890323263] [2024-06-27 19:58:22,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:22,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:22,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:22,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:22,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:22,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:58:22,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 458 transitions, 5774 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:22,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:22,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:58:22,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:24,232 INFO L124 PetriNetUnfolderBase]: 5321/8172 cut-off events. [2024-06-27 19:58:24,232 INFO L125 PetriNetUnfolderBase]: For 1495109/1495115 co-relation queries the response was YES. [2024-06-27 19:58:24,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84737 conditions, 8172 events. 5321/8172 cut-off events. For 1495109/1495115 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 48023 event pairs, 1149 based on Foata normal form. 6/8170 useless extension candidates. Maximal degree in co-relation 84576. Up to 8073 conditions per place. [2024-06-27 19:58:24,349 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 423 selfloop transitions, 48 changer transitions 0/474 dead transitions. [2024-06-27 19:58:24,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 474 transitions, 6874 flow [2024-06-27 19:58:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:24,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:24,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-27 19:58:24,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-27 19:58:24,351 INFO L175 Difference]: Start difference. First operand has 347 places, 458 transitions, 5774 flow. Second operand 8 states and 120 transitions. [2024-06-27 19:58:24,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 474 transitions, 6874 flow [2024-06-27 19:58:26,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 474 transitions, 6658 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:26,517 INFO L231 Difference]: Finished difference. Result has 349 places, 461 transitions, 5774 flow [2024-06-27 19:58:26,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5558, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5774, PETRI_PLACES=349, PETRI_TRANSITIONS=461} [2024-06-27 19:58:26,517 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 306 predicate places. [2024-06-27 19:58:26,517 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 461 transitions, 5774 flow [2024-06-27 19:58:26,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:26,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:26,517 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 19:58:26,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 19:58:26,518 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:58:26,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:26,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1303522786, now seen corresponding path program 1 times [2024-06-27 19:58:26,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:26,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116831764] [2024-06-27 19:58:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:26,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:28,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:28,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116831764] [2024-06-27 19:58:28,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116831764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:28,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:28,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:28,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650666218] [2024-06-27 19:58:28,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:28,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:28,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:28,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:28,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:28,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:58:28,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 461 transitions, 5774 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:28,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:28,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:58:28,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:30,974 INFO L124 PetriNetUnfolderBase]: 5155/8007 cut-off events. [2024-06-27 19:58:30,974 INFO L125 PetriNetUnfolderBase]: For 1511006/1511006 co-relation queries the response was YES. [2024-06-27 19:58:31,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83693 conditions, 8007 events. 5155/8007 cut-off events. For 1511006/1511006 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 47860 event pairs, 1199 based on Foata normal form. 2/8006 useless extension candidates. Maximal degree in co-relation 83531. Up to 7800 conditions per place. [2024-06-27 19:58:31,082 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 450 selfloop transitions, 20 changer transitions 0/484 dead transitions. [2024-06-27 19:58:31,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 484 transitions, 6896 flow [2024-06-27 19:58:31,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:31,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 19:58:31,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-27 19:58:31,083 INFO L175 Difference]: Start difference. First operand has 349 places, 461 transitions, 5774 flow. Second operand 8 states and 130 transitions. [2024-06-27 19:58:31,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 484 transitions, 6896 flow [2024-06-27 19:58:33,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 484 transitions, 6704 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:33,292 INFO L231 Difference]: Finished difference. Result has 351 places, 464 transitions, 5717 flow [2024-06-27 19:58:33,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5582, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5717, PETRI_PLACES=351, PETRI_TRANSITIONS=464} [2024-06-27 19:58:33,293 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 308 predicate places. [2024-06-27 19:58:33,293 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 464 transitions, 5717 flow [2024-06-27 19:58:33,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:33,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:33,293 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 19:58:33,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 19:58:33,293 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:58:33,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1303642942, now seen corresponding path program 1 times [2024-06-27 19:58:33,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:33,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058485645] [2024-06-27 19:58:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:33,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:35,427 INFO 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 19:58:35,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:35,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058485645] [2024-06-27 19:58:35,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058485645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:35,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:35,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:35,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542621590] [2024-06-27 19:58:35,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:35,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:35,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:35,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:35,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:58:35,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 464 transitions, 5717 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:35,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:35,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:58:35,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:37,569 INFO L124 PetriNetUnfolderBase]: 5181/8045 cut-off events. [2024-06-27 19:58:37,570 INFO L125 PetriNetUnfolderBase]: For 1562352/1562367 co-relation queries the response was YES. [2024-06-27 19:58:37,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84617 conditions, 8045 events. 5181/8045 cut-off events. For 1562352/1562367 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 48076 event pairs, 1198 based on Foata normal form. 5/8047 useless extension candidates. Maximal degree in co-relation 84454. Up to 7839 conditions per place. [2024-06-27 19:58:37,692 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 455 selfloop transitions, 21 changer transitions 0/490 dead transitions. [2024-06-27 19:58:37,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 490 transitions, 7159 flow [2024-06-27 19:58:37,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:37,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 19:58:37,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-27 19:58:37,694 INFO L175 Difference]: Start difference. First operand has 351 places, 464 transitions, 5717 flow. Second operand 8 states and 130 transitions. [2024-06-27 19:58:37,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 490 transitions, 7159 flow [2024-06-27 19:58:40,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 490 transitions, 7052 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 19:58:40,408 INFO L231 Difference]: Finished difference. Result has 354 places, 471 transitions, 5842 flow [2024-06-27 19:58:40,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5610, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5842, PETRI_PLACES=354, PETRI_TRANSITIONS=471} [2024-06-27 19:58:40,409 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 311 predicate places. [2024-06-27 19:58:40,409 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 471 transitions, 5842 flow [2024-06-27 19:58:40,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:40,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:40,409 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 19:58:40,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 19:58:40,409 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:58:40,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:40,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1308291082, now seen corresponding path program 2 times [2024-06-27 19:58:40,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:40,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843245593] [2024-06-27 19:58:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:40,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:42,884 INFO 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 19:58:42,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:42,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843245593] [2024-06-27 19:58:42,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843245593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:42,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:42,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:42,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364926406] [2024-06-27 19:58:42,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:42,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:42,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:42,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:42,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:43,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:58:43,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 471 transitions, 5842 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:43,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:43,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:58:43,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:45,315 INFO L124 PetriNetUnfolderBase]: 5197/8069 cut-off events. [2024-06-27 19:58:45,315 INFO L125 PetriNetUnfolderBase]: For 1579809/1579814 co-relation queries the response was YES. [2024-06-27 19:58:45,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85872 conditions, 8069 events. 5197/8069 cut-off events. For 1579809/1579814 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 48260 event pairs, 1197 based on Foata normal form. 8/8074 useless extension candidates. Maximal degree in co-relation 85707. Up to 7873 conditions per place. [2024-06-27 19:58:45,419 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 458 selfloop transitions, 20 changer transitions 0/492 dead transitions. [2024-06-27 19:58:45,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 492 transitions, 7224 flow [2024-06-27 19:58:45,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-27 19:58:45,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37202380952380953 [2024-06-27 19:58:45,420 INFO L175 Difference]: Start difference. First operand has 354 places, 471 transitions, 5842 flow. Second operand 8 states and 125 transitions. [2024-06-27 19:58:45,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 492 transitions, 7224 flow [2024-06-27 19:58:48,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 492 transitions, 7133 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 19:58:48,069 INFO L231 Difference]: Finished difference. Result has 359 places, 477 transitions, 5974 flow [2024-06-27 19:58:48,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5751, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5974, PETRI_PLACES=359, PETRI_TRANSITIONS=477} [2024-06-27 19:58:48,070 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-27 19:58:48,070 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 477 transitions, 5974 flow [2024-06-27 19:58:48,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:48,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:48,070 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 19:58:48,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 19:58:48,070 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:58:48,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:48,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1308284572, now seen corresponding path program 3 times [2024-06-27 19:58:48,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:48,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473857135] [2024-06-27 19:58:48,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:48,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:50,367 INFO 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 19:58:50,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:50,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473857135] [2024-06-27 19:58:50,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473857135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:50,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:50,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:50,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946909412] [2024-06-27 19:58:50,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:50,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:50,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:50,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:50,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:50,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:58:50,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 477 transitions, 5974 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:50,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:50,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:58:50,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:52,702 INFO L124 PetriNetUnfolderBase]: 5216/8100 cut-off events. [2024-06-27 19:58:52,702 INFO L125 PetriNetUnfolderBase]: For 1635497/1635513 co-relation queries the response was YES. [2024-06-27 19:58:52,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86959 conditions, 8100 events. 5216/8100 cut-off events. For 1635497/1635513 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 48535 event pairs, 1198 based on Foata normal form. 7/8103 useless extension candidates. Maximal degree in co-relation 86791. Up to 7896 conditions per place. [2024-06-27 19:58:52,823 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 464 selfloop transitions, 19 changer transitions 0/497 dead transitions. [2024-06-27 19:58:52,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 497 transitions, 7176 flow [2024-06-27 19:58:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-27 19:58:52,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:58:52,824 INFO L175 Difference]: Start difference. First operand has 359 places, 477 transitions, 5974 flow. Second operand 8 states and 126 transitions. [2024-06-27 19:58:52,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 497 transitions, 7176 flow [2024-06-27 19:58:55,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 497 transitions, 7099 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 19:58:55,459 INFO L231 Difference]: Finished difference. Result has 363 places, 481 transitions, 6040 flow [2024-06-27 19:58:55,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5897, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6040, PETRI_PLACES=363, PETRI_TRANSITIONS=481} [2024-06-27 19:58:55,459 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 320 predicate places. [2024-06-27 19:58:55,459 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 481 transitions, 6040 flow [2024-06-27 19:58:55,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:55,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:55,460 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 19:58:55,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 19:58:55,460 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:58:55,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:55,461 INFO L85 PathProgramCache]: Analyzing trace with hash -875386870, now seen corresponding path program 4 times [2024-06-27 19:58:55,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:55,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333558232] [2024-06-27 19:58:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:55,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:58,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:58,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333558232] [2024-06-27 19:58:58,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333558232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:58,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:58,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:58:58,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353881169] [2024-06-27 19:58:58,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:58,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:58:58,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:58,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:58:58,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:58:58,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:58:58,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 481 transitions, 6040 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:58,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:58,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:58:58,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:00,248 INFO L124 PetriNetUnfolderBase]: 5232/8122 cut-off events. [2024-06-27 19:59:00,248 INFO L125 PetriNetUnfolderBase]: For 1646504/1646520 co-relation queries the response was YES. [2024-06-27 19:59:00,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88149 conditions, 8122 events. 5232/8122 cut-off events. For 1646504/1646520 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 48640 event pairs, 1200 based on Foata normal form. 3/8122 useless extension candidates. Maximal degree in co-relation 87979. Up to 7928 conditions per place. [2024-06-27 19:59:00,376 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 464 selfloop transitions, 21 changer transitions 0/499 dead transitions. [2024-06-27 19:59:00,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 499 transitions, 7450 flow [2024-06-27 19:59:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-27 19:59:00,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34656084656084657 [2024-06-27 19:59:00,377 INFO L175 Difference]: Start difference. First operand has 363 places, 481 transitions, 6040 flow. Second operand 9 states and 131 transitions. [2024-06-27 19:59:00,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 499 transitions, 7450 flow [2024-06-27 19:59:03,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 499 transitions, 7337 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:03,704 INFO L231 Difference]: Finished difference. Result has 367 places, 487 transitions, 6170 flow [2024-06-27 19:59:03,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5927, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6170, PETRI_PLACES=367, PETRI_TRANSITIONS=487} [2024-06-27 19:59:03,704 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 324 predicate places. [2024-06-27 19:59:03,704 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 487 transitions, 6170 flow [2024-06-27 19:59:03,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:03,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:03,704 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 19:59:03,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 19:59:03,705 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:59:03,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:03,705 INFO L85 PathProgramCache]: Analyzing trace with hash -875393380, now seen corresponding path program 5 times [2024-06-27 19:59:03,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:03,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103731135] [2024-06-27 19:59:03,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:03,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:06,176 INFO 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 19:59:06,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:06,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103731135] [2024-06-27 19:59:06,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103731135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:06,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:06,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:06,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543099104] [2024-06-27 19:59:06,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:06,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:06,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:06,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:06,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:06,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:59:06,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 487 transitions, 6170 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:06,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:06,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:59:06,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:08,405 INFO L124 PetriNetUnfolderBase]: 5265/8173 cut-off events. [2024-06-27 19:59:08,405 INFO L125 PetriNetUnfolderBase]: For 1715564/1715570 co-relation queries the response was YES. [2024-06-27 19:59:08,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89435 conditions, 8173 events. 5265/8173 cut-off events. For 1715564/1715570 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 48997 event pairs, 1199 based on Foata normal form. 10/8180 useless extension candidates. Maximal degree in co-relation 89263. Up to 7960 conditions per place. [2024-06-27 19:59:08,531 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 472 selfloop transitions, 19 changer transitions 0/505 dead transitions. [2024-06-27 19:59:08,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 505 transitions, 7412 flow [2024-06-27 19:59:08,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:08,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-27 19:59:08,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-27 19:59:08,532 INFO L175 Difference]: Start difference. First operand has 367 places, 487 transitions, 6170 flow. Second operand 8 states and 124 transitions. [2024-06-27 19:59:08,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 505 transitions, 7412 flow [2024-06-27 19:59:11,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 505 transitions, 7311 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 19:59:11,391 INFO L231 Difference]: Finished difference. Result has 370 places, 491 transitions, 6230 flow [2024-06-27 19:59:11,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6069, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6230, PETRI_PLACES=370, PETRI_TRANSITIONS=491} [2024-06-27 19:59:11,391 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 327 predicate places. [2024-06-27 19:59:11,391 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 491 transitions, 6230 flow [2024-06-27 19:59:11,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:11,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:11,392 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 19:59:11,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 19:59:11,392 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:59:11,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash -867112660, now seen corresponding path program 6 times [2024-06-27 19:59:11,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:11,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113302506] [2024-06-27 19:59:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:11,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:13,578 INFO 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 19:59:13,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:13,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113302506] [2024-06-27 19:59:13,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113302506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:13,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:13,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:13,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113926636] [2024-06-27 19:59:13,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:13,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:13,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:13,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-27 19:59:13,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 491 transitions, 6230 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:13,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:13,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-27 19:59:13,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:15,964 INFO L124 PetriNetUnfolderBase]: 5264/8170 cut-off events. [2024-06-27 19:59:15,964 INFO L125 PetriNetUnfolderBase]: For 1682944/1682950 co-relation queries the response was YES. [2024-06-27 19:59:16,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90017 conditions, 8170 events. 5264/8170 cut-off events. For 1682944/1682950 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 48878 event pairs, 1203 based on Foata normal form. 4/8171 useless extension candidates. Maximal degree in co-relation 89844. Up to 7971 conditions per place. [2024-06-27 19:59:16,084 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 472 selfloop transitions, 20 changer transitions 0/506 dead transitions. [2024-06-27 19:59:16,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 506 transitions, 7356 flow [2024-06-27 19:59:16,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-27 19:59:16,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601190476190476 [2024-06-27 19:59:16,086 INFO L175 Difference]: Start difference. First operand has 370 places, 491 transitions, 6230 flow. Second operand 8 states and 121 transitions. [2024-06-27 19:59:16,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 506 transitions, 7356 flow [2024-06-27 19:59:19,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 506 transitions, 7239 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:19,601 INFO L231 Difference]: Finished difference. Result has 372 places, 494 transitions, 6257 flow [2024-06-27 19:59:19,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6113, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6257, PETRI_PLACES=372, PETRI_TRANSITIONS=494} [2024-06-27 19:59:19,602 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 329 predicate places. [2024-06-27 19:59:19,602 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 494 transitions, 6257 flow [2024-06-27 19:59:19,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:19,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:19,602 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 19:59:19,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 19:59:19,603 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:59:19,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:19,603 INFO L85 PathProgramCache]: Analyzing trace with hash -866804830, now seen corresponding path program 1 times [2024-06-27 19:59:19,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:19,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360415629] [2024-06-27 19:59:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:19,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:22,476 INFO 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 19:59:22,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:22,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360415629] [2024-06-27 19:59:22,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360415629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:22,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:22,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:22,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532511153] [2024-06-27 19:59:22,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:22,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:22,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:22,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:22,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:59:22,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 494 transitions, 6257 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:22,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:22,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:59:22,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:24,749 INFO L124 PetriNetUnfolderBase]: 5476/8390 cut-off events. [2024-06-27 19:59:24,749 INFO L125 PetriNetUnfolderBase]: For 1698844/1698844 co-relation queries the response was YES. [2024-06-27 19:59:24,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91985 conditions, 8390 events. 5476/8390 cut-off events. For 1698844/1698844 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 49256 event pairs, 1256 based on Foata normal form. 2/8389 useless extension candidates. Maximal degree in co-relation 91811. Up to 8352 conditions per place. [2024-06-27 19:59:24,875 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 485 selfloop transitions, 19 changer transitions 0/507 dead transitions. [2024-06-27 19:59:24,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 507 transitions, 7389 flow [2024-06-27 19:59:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:24,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-27 19:59:24,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33630952380952384 [2024-06-27 19:59:24,876 INFO L175 Difference]: Start difference. First operand has 372 places, 494 transitions, 6257 flow. Second operand 8 states and 113 transitions. [2024-06-27 19:59:24,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 507 transitions, 7389 flow [2024-06-27 19:59:28,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 507 transitions, 7279 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:28,192 INFO L231 Difference]: Finished difference. Result has 374 places, 496 transitions, 6290 flow [2024-06-27 19:59:28,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6147, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6290, PETRI_PLACES=374, PETRI_TRANSITIONS=496} [2024-06-27 19:59:28,192 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 331 predicate places. [2024-06-27 19:59:28,192 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 496 transitions, 6290 flow [2024-06-27 19:59:28,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:28,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:28,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:28,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 19:59:28,193 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:59:28,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:28,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1712100514, now seen corresponding path program 1 times [2024-06-27 19:59:28,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:28,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105115935] [2024-06-27 19:59:28,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:28,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:31,701 INFO 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 19:59:31,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:31,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105115935] [2024-06-27 19:59:31,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105115935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:31,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:31,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:31,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886512247] [2024-06-27 19:59:31,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:31,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:31,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:31,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:31,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:31,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:59:31,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 496 transitions, 6290 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:31,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:31,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:59:31,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:34,876 INFO L124 PetriNetUnfolderBase]: 5517/8460 cut-off events. [2024-06-27 19:59:34,876 INFO L125 PetriNetUnfolderBase]: For 1773386/1773386 co-relation queries the response was YES. [2024-06-27 19:59:34,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93005 conditions, 8460 events. 5517/8460 cut-off events. For 1773386/1773386 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 49488 event pairs, 936 based on Foata normal form. 12/8469 useless extension candidates. Maximal degree in co-relation 92830. Up to 8179 conditions per place. [2024-06-27 19:59:34,998 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 504 selfloop transitions, 37 changer transitions 0/544 dead transitions. [2024-06-27 19:59:34,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 544 transitions, 7648 flow [2024-06-27 19:59:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:35,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 19:59:35,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 19:59:35,000 INFO L175 Difference]: Start difference. First operand has 374 places, 496 transitions, 6290 flow. Second operand 11 states and 175 transitions. [2024-06-27 19:59:35,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 544 transitions, 7648 flow [2024-06-27 19:59:37,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 544 transitions, 7521 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:37,945 INFO L231 Difference]: Finished difference. Result has 380 places, 499 transitions, 6376 flow [2024-06-27 19:59:37,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6163, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6376, PETRI_PLACES=380, PETRI_TRANSITIONS=499} [2024-06-27 19:59:37,946 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 337 predicate places. [2024-06-27 19:59:37,946 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 499 transitions, 6376 flow [2024-06-27 19:59:37,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:37,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:37,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:37,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 19:59:37,946 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:59:37,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:37,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1614706466, now seen corresponding path program 2 times [2024-06-27 19:59:37,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:37,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364332609] [2024-06-27 19:59:37,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:37,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:41,747 INFO 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 19:59:41,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:41,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364332609] [2024-06-27 19:59:41,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364332609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:41,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:41,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:41,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673569290] [2024-06-27 19:59:41,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:41,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:41,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:41,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:41,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:41,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:59:41,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 499 transitions, 6376 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:41,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:41,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:59:41,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:44,669 INFO L124 PetriNetUnfolderBase]: 5575/8558 cut-off events. [2024-06-27 19:59:44,669 INFO L125 PetriNetUnfolderBase]: For 1808191/1808191 co-relation queries the response was YES. [2024-06-27 19:59:44,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94363 conditions, 8558 events. 5575/8558 cut-off events. For 1808191/1808191 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 50631 event pairs, 1097 based on Foata normal form. 12/8567 useless extension candidates. Maximal degree in co-relation 94186. Up to 8171 conditions per place. [2024-06-27 19:59:44,815 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 490 selfloop transitions, 55 changer transitions 0/548 dead transitions. [2024-06-27 19:59:44,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 548 transitions, 7758 flow [2024-06-27 19:59:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 19:59:44,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3874458874458874 [2024-06-27 19:59:44,816 INFO L175 Difference]: Start difference. First operand has 380 places, 499 transitions, 6376 flow. Second operand 11 states and 179 transitions. [2024-06-27 19:59:44,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 548 transitions, 7758 flow [2024-06-27 19:59:47,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 548 transitions, 7578 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:47,925 INFO L231 Difference]: Finished difference. Result has 384 places, 503 transitions, 6463 flow [2024-06-27 19:59:47,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6196, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6463, PETRI_PLACES=384, PETRI_TRANSITIONS=503} [2024-06-27 19:59:47,925 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-27 19:59:47,925 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 503 transitions, 6463 flow [2024-06-27 19:59:47,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:47,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:47,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:47,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 19:59:47,926 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:59:47,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash -114196718, now seen corresponding path program 3 times [2024-06-27 19:59:47,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:47,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874146054] [2024-06-27 19:59:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:47,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:51,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:51,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874146054] [2024-06-27 19:59:51,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874146054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:51,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:51,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:59:51,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535773575] [2024-06-27 19:59:51,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:51,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:59:51,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:51,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:59:51,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:59:52,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 19:59:52,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 503 transitions, 6463 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:52,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:52,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 19:59:52,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:55,698 INFO L124 PetriNetUnfolderBase]: 5677/8732 cut-off events. [2024-06-27 19:59:55,698 INFO L125 PetriNetUnfolderBase]: For 1934468/1934468 co-relation queries the response was YES. [2024-06-27 19:59:55,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97565 conditions, 8732 events. 5677/8732 cut-off events. For 1934468/1934468 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 52023 event pairs, 1140 based on Foata normal form. 12/8741 useless extension candidates. Maximal degree in co-relation 97386. Up to 8101 conditions per place. [2024-06-27 19:59:55,821 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 494 selfloop transitions, 60 changer transitions 0/557 dead transitions. [2024-06-27 19:59:55,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 557 transitions, 8376 flow [2024-06-27 19:59:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 19:59:55,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004329004329004 [2024-06-27 19:59:55,823 INFO L175 Difference]: Start difference. First operand has 384 places, 503 transitions, 6463 flow. Second operand 11 states and 185 transitions. [2024-06-27 19:59:55,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 557 transitions, 8376 flow [2024-06-27 19:59:58,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 557 transitions, 8150 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:58,371 INFO L231 Difference]: Finished difference. Result has 388 places, 506 transitions, 6581 flow [2024-06-27 19:59:58,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6239, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6581, PETRI_PLACES=388, PETRI_TRANSITIONS=506} [2024-06-27 19:59:58,372 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 345 predicate places. [2024-06-27 19:59:58,372 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 506 transitions, 6581 flow [2024-06-27 19:59:58,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:58,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:58,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:58,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 19:59:58,372 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 19:59:58,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:58,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1430348442, now seen corresponding path program 4 times [2024-06-27 19:59:58,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:58,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540158003] [2024-06-27 19:59:58,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:58,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:02,142 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 20:00:02,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:02,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540158003] [2024-06-27 20:00:02,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540158003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:02,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:02,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:00:02,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585025667] [2024-06-27 20:00:02,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:02,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:00:02,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:02,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:00:02,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:00:02,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 20:00:02,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 506 transitions, 6581 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:02,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:02,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 20:00:02,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:05,530 INFO L124 PetriNetUnfolderBase]: 5649/8688 cut-off events. [2024-06-27 20:00:05,531 INFO L125 PetriNetUnfolderBase]: For 1895405/1895405 co-relation queries the response was YES. [2024-06-27 20:00:05,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95224 conditions, 8688 events. 5649/8688 cut-off events. For 1895405/1895405 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 51711 event pairs, 1139 based on Foata normal form. 16/8701 useless extension candidates. Maximal degree in co-relation 95043. Up to 8093 conditions per place. [2024-06-27 20:00:05,659 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 490 selfloop transitions, 60 changer transitions 0/553 dead transitions. [2024-06-27 20:00:05,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 553 transitions, 7879 flow [2024-06-27 20:00:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 20:00:05,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 20:00:05,660 INFO L175 Difference]: Start difference. First operand has 388 places, 506 transitions, 6581 flow. Second operand 11 states and 182 transitions. [2024-06-27 20:00:05,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 553 transitions, 7879 flow [2024-06-27 20:00:08,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 553 transitions, 7655 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-06-27 20:00:08,764 INFO L231 Difference]: Finished difference. Result has 392 places, 506 transitions, 6492 flow [2024-06-27 20:00:08,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6357, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6492, PETRI_PLACES=392, PETRI_TRANSITIONS=506} [2024-06-27 20:00:08,765 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 349 predicate places. [2024-06-27 20:00:08,765 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 506 transitions, 6492 flow [2024-06-27 20:00:08,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:08,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:08,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:08,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 20:00:08,766 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:00:08,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:08,766 INFO L85 PathProgramCache]: Analyzing trace with hash -117915788, now seen corresponding path program 5 times [2024-06-27 20:00:08,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:08,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696944355] [2024-06-27 20:00:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:08,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:12,139 INFO 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 20:00:12,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:12,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696944355] [2024-06-27 20:00:12,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696944355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:12,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:12,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:12,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538254155] [2024-06-27 20:00:12,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:12,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:12,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:12,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:12,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:12,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 20:00:12,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 506 transitions, 6492 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:12,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:12,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 20:00:12,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:15,193 INFO L124 PetriNetUnfolderBase]: 5690/8759 cut-off events. [2024-06-27 20:00:15,193 INFO L125 PetriNetUnfolderBase]: For 1892381/1892381 co-relation queries the response was YES. [2024-06-27 20:00:15,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95533 conditions, 8759 events. 5690/8759 cut-off events. For 1892381/1892381 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 52309 event pairs, 1133 based on Foata normal form. 12/8768 useless extension candidates. Maximal degree in co-relation 95350. Up to 8454 conditions per place. [2024-06-27 20:00:15,652 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 503 selfloop transitions, 43 changer transitions 0/549 dead transitions. [2024-06-27 20:00:15,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 549 transitions, 7858 flow [2024-06-27 20:00:15,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 20:00:15,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880952380952381 [2024-06-27 20:00:15,653 INFO L175 Difference]: Start difference. First operand has 392 places, 506 transitions, 6492 flow. Second operand 10 states and 163 transitions. [2024-06-27 20:00:15,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 549 transitions, 7858 flow [2024-06-27 20:00:19,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 549 transitions, 7714 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:19,662 INFO L231 Difference]: Finished difference. Result has 392 places, 509 transitions, 6584 flow [2024-06-27 20:00:19,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6348, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6584, PETRI_PLACES=392, PETRI_TRANSITIONS=509} [2024-06-27 20:00:19,662 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 349 predicate places. [2024-06-27 20:00:19,662 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 509 transitions, 6584 flow [2024-06-27 20:00:19,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:19,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:19,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:19,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 20:00:19,663 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:00:19,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:19,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1317205120, now seen corresponding path program 1 times [2024-06-27 20:00:19,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:19,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081535493] [2024-06-27 20:00:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:19,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:21,266 INFO 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 20:00:21,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:21,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081535493] [2024-06-27 20:00:21,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081535493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:21,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:21,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:00:21,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293396953] [2024-06-27 20:00:21,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:21,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:00:21,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:21,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:00:21,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:00:21,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 20:00:21,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 509 transitions, 6584 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:21,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:21,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 20:00:21,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:23,807 INFO L124 PetriNetUnfolderBase]: 5700/8773 cut-off events. [2024-06-27 20:00:23,808 INFO L125 PetriNetUnfolderBase]: For 1854660/1854660 co-relation queries the response was YES. [2024-06-27 20:00:23,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95840 conditions, 8773 events. 5700/8773 cut-off events. For 1854660/1854660 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 52368 event pairs, 1151 based on Foata normal form. 2/8772 useless extension candidates. Maximal degree in co-relation 95656. Up to 8613 conditions per place. [2024-06-27 20:00:23,952 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 497 selfloop transitions, 39 changer transitions 0/539 dead transitions. [2024-06-27 20:00:23,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 539 transitions, 7866 flow [2024-06-27 20:00:23,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:00:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:00:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 20:00:23,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-27 20:00:23,953 INFO L175 Difference]: Start difference. First operand has 392 places, 509 transitions, 6584 flow. Second operand 8 states and 130 transitions. [2024-06-27 20:00:23,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 539 transitions, 7866 flow [2024-06-27 20:00:27,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 539 transitions, 7668 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-27 20:00:27,938 INFO L231 Difference]: Finished difference. Result has 393 places, 512 transitions, 6597 flow [2024-06-27 20:00:27,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6386, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6597, PETRI_PLACES=393, PETRI_TRANSITIONS=512} [2024-06-27 20:00:27,939 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 350 predicate places. [2024-06-27 20:00:27,939 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 512 transitions, 6597 flow [2024-06-27 20:00:27,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:27,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:27,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:27,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 20:00:27,939 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:00:27,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:27,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1310538880, now seen corresponding path program 2 times [2024-06-27 20:00:27,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:27,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241821704] [2024-06-27 20:00:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:29,545 INFO 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 20:00:29,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:29,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241821704] [2024-06-27 20:00:29,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241821704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:29,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:29,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:00:29,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927482198] [2024-06-27 20:00:29,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:29,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:00:29,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:29,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:00:29,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:00:29,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 20:00:29,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 512 transitions, 6597 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:29,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:29,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 20:00:29,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:32,070 INFO L124 PetriNetUnfolderBase]: 5710/8787 cut-off events. [2024-06-27 20:00:32,070 INFO L125 PetriNetUnfolderBase]: For 1873612/1873612 co-relation queries the response was YES. [2024-06-27 20:00:32,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96162 conditions, 8787 events. 5710/8787 cut-off events. For 1873612/1873612 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 52466 event pairs, 1178 based on Foata normal form. 2/8786 useless extension candidates. Maximal degree in co-relation 95977. Up to 8667 conditions per place. [2024-06-27 20:00:32,213 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 502 selfloop transitions, 36 changer transitions 0/541 dead transitions. [2024-06-27 20:00:32,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 541 transitions, 7890 flow [2024-06-27 20:00:32,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:00:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:00:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-27 20:00:32,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:00:32,214 INFO L175 Difference]: Start difference. First operand has 393 places, 512 transitions, 6597 flow. Second operand 8 states and 126 transitions. [2024-06-27 20:00:32,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 541 transitions, 7890 flow [2024-06-27 20:00:35,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 541 transitions, 7703 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-27 20:00:35,825 INFO L231 Difference]: Finished difference. Result has 396 places, 518 transitions, 6647 flow [2024-06-27 20:00:35,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6410, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6647, PETRI_PLACES=396, PETRI_TRANSITIONS=518} [2024-06-27 20:00:35,826 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 353 predicate places. [2024-06-27 20:00:35,826 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 518 transitions, 6647 flow [2024-06-27 20:00:35,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:35,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:35,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:35,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 20:00:35,826 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:00:35,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:35,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1201735204, now seen corresponding path program 1 times [2024-06-27 20:00:35,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:35,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880947047] [2024-06-27 20:00:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:35,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:37,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:37,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880947047] [2024-06-27 20:00:37,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880947047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:37,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:37,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:00:37,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319630563] [2024-06-27 20:00:37,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:37,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:00:37,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:00:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:00:37,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 20:00:37,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 518 transitions, 6647 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:37,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:37,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 20:00:37,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:40,108 INFO L124 PetriNetUnfolderBase]: 5725/8808 cut-off events. [2024-06-27 20:00:40,108 INFO L125 PetriNetUnfolderBase]: For 1915163/1915163 co-relation queries the response was YES. [2024-06-27 20:00:40,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97674 conditions, 8808 events. 5725/8808 cut-off events. For 1915163/1915163 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 52584 event pairs, 1183 based on Foata normal form. 3/8808 useless extension candidates. Maximal degree in co-relation 97487. Up to 8708 conditions per place. [2024-06-27 20:00:40,257 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 504 selfloop transitions, 37 changer transitions 0/544 dead transitions. [2024-06-27 20:00:40,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 544 transitions, 7987 flow [2024-06-27 20:00:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:00:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:00:40,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-27 20:00:40,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:00:40,259 INFO L175 Difference]: Start difference. First operand has 396 places, 518 transitions, 6647 flow. Second operand 8 states and 126 transitions. [2024-06-27 20:00:40,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 544 transitions, 7987 flow [2024-06-27 20:00:44,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 544 transitions, 7803 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-27 20:00:44,571 INFO L231 Difference]: Finished difference. Result has 399 places, 521 transitions, 6667 flow [2024-06-27 20:00:44,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6463, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6667, PETRI_PLACES=399, PETRI_TRANSITIONS=521} [2024-06-27 20:00:44,571 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 356 predicate places. [2024-06-27 20:00:44,571 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 521 transitions, 6667 flow [2024-06-27 20:00:44,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:44,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:44,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:44,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 20:00:44,572 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:00:44,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:44,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1201913950, now seen corresponding path program 3 times [2024-06-27 20:00:44,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:44,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95684364] [2024-06-27 20:00:44,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:44,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:46,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:46,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95684364] [2024-06-27 20:00:46,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95684364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:46,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:46,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:00:46,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395197582] [2024-06-27 20:00:46,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:46,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:00:46,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:46,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:00:46,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:00:46,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 20:00:46,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 521 transitions, 6667 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:46,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:46,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 20:00:46,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:48,707 INFO L124 PetriNetUnfolderBase]: 5735/8822 cut-off events. [2024-06-27 20:00:48,707 INFO L125 PetriNetUnfolderBase]: For 1941367/1941367 co-relation queries the response was YES. [2024-06-27 20:00:48,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98511 conditions, 8822 events. 5735/8822 cut-off events. For 1941367/1941367 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 52713 event pairs, 1135 based on Foata normal form. 2/8821 useless extension candidates. Maximal degree in co-relation 98323. Up to 8603 conditions per place. [2024-06-27 20:00:48,862 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 497 selfloop transitions, 48 changer transitions 0/548 dead transitions. [2024-06-27 20:00:48,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 548 transitions, 7971 flow [2024-06-27 20:00:48,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:00:48,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:00:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 20:00:48,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-27 20:00:48,863 INFO L175 Difference]: Start difference. First operand has 399 places, 521 transitions, 6667 flow. Second operand 8 states and 130 transitions. [2024-06-27 20:00:48,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 548 transitions, 7971 flow [2024-06-27 20:00:52,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 548 transitions, 7801 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-27 20:00:52,281 INFO L231 Difference]: Finished difference. Result has 401 places, 524 transitions, 6739 flow [2024-06-27 20:00:52,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6497, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6739, PETRI_PLACES=401, PETRI_TRANSITIONS=524} [2024-06-27 20:00:52,281 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 358 predicate places. [2024-06-27 20:00:52,282 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 524 transitions, 6739 flow [2024-06-27 20:00:52,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:52,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:52,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:52,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 20:00:52,282 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:00:52,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:52,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1201585474, now seen corresponding path program 2 times [2024-06-27 20:00:52,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:52,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550105030] [2024-06-27 20:00:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:52,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:54,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:54,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:54,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550105030] [2024-06-27 20:00:54,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550105030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:54,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:54,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:00:54,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657288910] [2024-06-27 20:00:54,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:54,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:00:54,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:54,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:00:54,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:00:54,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 20:00:54,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 524 transitions, 6739 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:54,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:54,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 20:00:54,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:56,900 INFO L124 PetriNetUnfolderBase]: 5750/8843 cut-off events. [2024-06-27 20:00:56,900 INFO L125 PetriNetUnfolderBase]: For 1982624/1982624 co-relation queries the response was YES. [2024-06-27 20:00:57,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99506 conditions, 8843 events. 5750/8843 cut-off events. For 1982624/1982624 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 52828 event pairs, 1185 based on Foata normal form. 3/8843 useless extension candidates. Maximal degree in co-relation 99317. Up to 8763 conditions per place. [2024-06-27 20:00:57,055 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 513 selfloop transitions, 31 changer transitions 0/547 dead transitions. [2024-06-27 20:00:57,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 547 transitions, 8083 flow [2024-06-27 20:00:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:00:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:00:57,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-27 20:00:57,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-27 20:00:57,057 INFO L175 Difference]: Start difference. First operand has 401 places, 524 transitions, 6739 flow. Second operand 8 states and 123 transitions. [2024-06-27 20:00:57,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 547 transitions, 8083 flow [2024-06-27 20:01:01,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 547 transitions, 7863 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-06-27 20:01:01,160 INFO L231 Difference]: Finished difference. Result has 403 places, 527 transitions, 6717 flow [2024-06-27 20:01:01,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6519, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6717, PETRI_PLACES=403, PETRI_TRANSITIONS=527} [2024-06-27 20:01:01,160 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 360 predicate places. [2024-06-27 20:01:01,160 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 527 transitions, 6717 flow [2024-06-27 20:01:01,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:01,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:01,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:01,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 20:01:01,161 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:01:01,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:01,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1201585257, now seen corresponding path program 1 times [2024-06-27 20:01:01,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:01,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484668751] [2024-06-27 20:01:01,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:01,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:03,093 INFO 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 20:01:03,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:03,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484668751] [2024-06-27 20:01:03,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484668751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:03,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:03,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:01:03,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706401672] [2024-06-27 20:01:03,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:03,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:01:03,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:03,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:01:03,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:01:03,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 20:01:03,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 527 transitions, 6717 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:03,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:03,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 20:01:03,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:06,286 INFO L124 PetriNetUnfolderBase]: 5755/8850 cut-off events. [2024-06-27 20:01:06,286 INFO L125 PetriNetUnfolderBase]: For 2000907/2000907 co-relation queries the response was YES. [2024-06-27 20:01:06,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100125 conditions, 8850 events. 5755/8850 cut-off events. For 2000907/2000907 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 52814 event pairs, 1184 based on Foata normal form. 1/8848 useless extension candidates. Maximal degree in co-relation 99935. Up to 8776 conditions per place. [2024-06-27 20:01:06,546 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 514 selfloop transitions, 31 changer transitions 0/548 dead transitions. [2024-06-27 20:01:06,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 548 transitions, 7983 flow [2024-06-27 20:01:06,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:01:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:01:06,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-27 20:01:06,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601190476190476 [2024-06-27 20:01:06,547 INFO L175 Difference]: Start difference. First operand has 403 places, 527 transitions, 6717 flow. Second operand 8 states and 121 transitions. [2024-06-27 20:01:06,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 548 transitions, 7983 flow [2024-06-27 20:01:09,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 548 transitions, 7815 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-27 20:01:09,958 INFO L231 Difference]: Finished difference. Result has 405 places, 530 transitions, 6747 flow [2024-06-27 20:01:09,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6549, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6747, PETRI_PLACES=405, PETRI_TRANSITIONS=530} [2024-06-27 20:01:09,959 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 362 predicate places. [2024-06-27 20:01:09,959 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 530 transitions, 6747 flow [2024-06-27 20:01:09,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:09,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:09,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:09,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 20:01:09,959 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:01:09,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:09,960 INFO L85 PathProgramCache]: Analyzing trace with hash 680662746, now seen corresponding path program 4 times [2024-06-27 20:01:09,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:09,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723651729] [2024-06-27 20:01:09,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:09,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:11,738 INFO 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 20:01:11,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:11,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723651729] [2024-06-27 20:01:11,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723651729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:11,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:11,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:01:11,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177807390] [2024-06-27 20:01:11,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:11,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:01:11,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:11,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:01:11,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:01:11,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 20:01:11,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 530 transitions, 6747 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:11,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:11,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 20:01:11,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:14,898 INFO L124 PetriNetUnfolderBase]: 5773/8875 cut-off events. [2024-06-27 20:01:14,898 INFO L125 PetriNetUnfolderBase]: For 2045201/2045201 co-relation queries the response was YES. [2024-06-27 20:01:15,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101047 conditions, 8875 events. 5773/8875 cut-off events. For 2045201/2045201 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 53002 event pairs, 1133 based on Foata normal form. 2/8874 useless extension candidates. Maximal degree in co-relation 100856. Up to 8627 conditions per place. [2024-06-27 20:01:15,196 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 498 selfloop transitions, 57 changer transitions 0/558 dead transitions. [2024-06-27 20:01:15,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 558 transitions, 8465 flow [2024-06-27 20:01:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:01:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:01:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 20:01:15,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-27 20:01:15,200 INFO L175 Difference]: Start difference. First operand has 405 places, 530 transitions, 6747 flow. Second operand 8 states and 129 transitions. [2024-06-27 20:01:15,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 558 transitions, 8465 flow [2024-06-27 20:01:18,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 558 transitions, 8289 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-27 20:01:18,902 INFO L231 Difference]: Finished difference. Result has 407 places, 536 transitions, 6985 flow [2024-06-27 20:01:18,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6571, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6985, PETRI_PLACES=407, PETRI_TRANSITIONS=536} [2024-06-27 20:01:18,902 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 364 predicate places. [2024-06-27 20:01:18,902 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 536 transitions, 6985 flow [2024-06-27 20:01:18,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:18,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:18,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:18,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 20:01:18,903 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:01:18,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash 887583499, now seen corresponding path program 2 times [2024-06-27 20:01:18,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:18,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376270104] [2024-06-27 20:01:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:18,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:20,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:20,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376270104] [2024-06-27 20:01:20,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376270104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:20,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:20,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:01:20,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439655938] [2024-06-27 20:01:20,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:20,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:01:20,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:20,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:01:20,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:01:20,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 20:01:20,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 536 transitions, 6985 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:20,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:20,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 20:01:20,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:23,966 INFO L124 PetriNetUnfolderBase]: 5778/8882 cut-off events. [2024-06-27 20:01:23,966 INFO L125 PetriNetUnfolderBase]: For 2076790/2076790 co-relation queries the response was YES. [2024-06-27 20:01:24,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101963 conditions, 8882 events. 5778/8882 cut-off events. For 2076790/2076790 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 53039 event pairs, 1184 based on Foata normal form. 1/8880 useless extension candidates. Maximal degree in co-relation 101771. Up to 8828 conditions per place. [2024-06-27 20:01:24,106 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 526 selfloop transitions, 25 changer transitions 0/554 dead transitions. [2024-06-27 20:01:24,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 554 transitions, 8261 flow [2024-06-27 20:01:24,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:01:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:01:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-27 20:01:24,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35119047619047616 [2024-06-27 20:01:24,108 INFO L175 Difference]: Start difference. First operand has 407 places, 536 transitions, 6985 flow. Second operand 8 states and 118 transitions. [2024-06-27 20:01:24,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 554 transitions, 8261 flow [2024-06-27 20:01:28,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 554 transitions, 8050 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-27 20:01:28,135 INFO L231 Difference]: Finished difference. Result has 411 places, 539 transitions, 6968 flow [2024-06-27 20:01:28,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6774, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6968, PETRI_PLACES=411, PETRI_TRANSITIONS=539} [2024-06-27 20:01:28,136 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 368 predicate places. [2024-06-27 20:01:28,136 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 539 transitions, 6968 flow [2024-06-27 20:01:28,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:28,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:28,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:28,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 20:01:28,137 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:01:28,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:28,137 INFO L85 PathProgramCache]: Analyzing trace with hash -994931817, now seen corresponding path program 3 times [2024-06-27 20:01:28,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:28,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023531810] [2024-06-27 20:01:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:30,036 INFO 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 20:01:30,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:30,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023531810] [2024-06-27 20:01:30,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023531810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:30,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:30,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:01:30,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581851388] [2024-06-27 20:01:30,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:30,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:01:30,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:30,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:01:30,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:01:30,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 20:01:30,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 539 transitions, 6968 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:30,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:30,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 20:01:30,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:33,315 INFO L124 PetriNetUnfolderBase]: 5783/8889 cut-off events. [2024-06-27 20:01:33,315 INFO L125 PetriNetUnfolderBase]: For 2104119/2104119 co-relation queries the response was YES. [2024-06-27 20:01:33,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102465 conditions, 8889 events. 5783/8889 cut-off events. For 2104119/2104119 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 53095 event pairs, 1184 based on Foata normal form. 1/8887 useless extension candidates. Maximal degree in co-relation 102271. Up to 8835 conditions per place. [2024-06-27 20:01:33,452 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 529 selfloop transitions, 25 changer transitions 0/557 dead transitions. [2024-06-27 20:01:33,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 557 transitions, 8256 flow [2024-06-27 20:01:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:01:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:01:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-27 20:01:33,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35119047619047616 [2024-06-27 20:01:33,453 INFO L175 Difference]: Start difference. First operand has 411 places, 539 transitions, 6968 flow. Second operand 8 states and 118 transitions. [2024-06-27 20:01:33,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 557 transitions, 8256 flow [2024-06-27 20:01:38,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 557 transitions, 8084 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-27 20:01:38,534 INFO L231 Difference]: Finished difference. Result has 413 places, 542 transitions, 6996 flow [2024-06-27 20:01:38,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6796, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6996, PETRI_PLACES=413, PETRI_TRANSITIONS=542} [2024-06-27 20:01:38,534 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 370 predicate places. [2024-06-27 20:01:38,534 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 542 transitions, 6996 flow [2024-06-27 20:01:38,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:38,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:38,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:38,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 20:01:38,535 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:01:38,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:38,535 INFO L85 PathProgramCache]: Analyzing trace with hash -994932034, now seen corresponding path program 3 times [2024-06-27 20:01:38,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:38,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100739181] [2024-06-27 20:01:38,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:38,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:40,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:40,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100739181] [2024-06-27 20:01:40,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100739181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:40,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:40,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:01:40,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454890885] [2024-06-27 20:01:40,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:40,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:01:40,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:01:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:01:40,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-27 20:01:40,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 542 transitions, 6996 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:40,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:40,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-27 20:01:40,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand