./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:38:47,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:38:47,832 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:38:47,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:38:47,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:38:47,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:38:47,867 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:38:47,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:38:47,868 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:38:47,872 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:38:47,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:38:47,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:38:47,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:38:47,875 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:38:47,875 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:38:47,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:38:47,876 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:38:47,876 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:38:47,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:38:47,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:38:47,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:38:47,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:38:47,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:38:47,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:38:47,879 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:38:47,879 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:38:47,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:38:47,880 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:38:47,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:38:47,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:38:47,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:38:47,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:38:47,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:38:47,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:38:47,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:38:47,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:38:47,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:38:47,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:38:47,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:38:47,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:38:47,884 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:38:47,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:38:47,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:38:47,886 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:38:48,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:38:48,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:38:48,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:38:48,187 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:38:48,188 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:38:48,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:38:49,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:38:49,411 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:38:49,412 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:38:49,428 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8302dcdb2/7e5f509342124e0d895011589dfc8d64/FLAG667535820 [2024-06-28 01:38:49,438 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8302dcdb2/7e5f509342124e0d895011589dfc8d64 [2024-06-28 01:38:49,440 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:38:49,442 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:38:49,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 01:38:49,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:38:49,654 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:38:49,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:38:49,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:38:49,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:38:49,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:38:49" (1/2) ... [2024-06-28 01:38:49,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb4dbed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:38:49, skipping insertion in model container [2024-06-28 01:38:49,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:38:49" (1/2) ... [2024-06-28 01:38:49,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7238fb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:38:49, skipping insertion in model container [2024-06-28 01:38:49,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:38:49" (2/2) ... [2024-06-28 01:38:49,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb4dbed and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:49, skipping insertion in model container [2024-06-28 01:38:49,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:38:49" (2/2) ... [2024-06-28 01:38:49,664 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:38:49,731 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:38:49,732 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ((((((((((((((((((! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-28 01:38:49,732 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((((! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-28 01:38:49,732 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] ((((((((((((((((((! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-28 01:38:49,732 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:38:49,733 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-28 01:38:49,770 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:38:49,899 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2024-06-28 01:38:50,078 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:38:50,093 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:38:50,128 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:38:50,194 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:38:50,226 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:38:50,226 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50 WrapperNode [2024-06-28 01:38:50,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:38:50,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:38:50,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:38:50,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:38:50,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (1/1) ... [2024-06-28 01:38:50,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (1/1) ... [2024-06-28 01:38:50,302 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2024-06-28 01:38:50,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:38:50,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:38:50,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:38:50,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:38:50,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (1/1) ... [2024-06-28 01:38:50,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (1/1) ... [2024-06-28 01:38:50,333 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (1/1) ... [2024-06-28 01:38:50,354 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:38:50,354 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (1/1) ... [2024-06-28 01:38:50,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (1/1) ... [2024-06-28 01:38:50,361 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (1/1) ... [2024-06-28 01:38:50,363 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (1/1) ... [2024-06-28 01:38:50,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (1/1) ... [2024-06-28 01:38:50,365 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (1/1) ... [2024-06-28 01:38:50,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:38:50,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:38:50,369 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:38:50,369 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:38:50,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (1/1) ... [2024-06-28 01:38:50,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:38:50,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:38:50,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:38:50,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:38:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:38:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:38:50,458 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:38:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:38:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:38:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:38:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:38:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:38:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:38:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:38:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:38:50,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:38:50,462 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:38:50,581 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:38:50,583 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:38:50,936 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:38:50,936 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:38:51,080 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:38:51,080 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:38:51,081 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:38:51 BoogieIcfgContainer [2024-06-28 01:38:51,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:38:51,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:38:51,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:38:51,086 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:38:51,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:38:49" (1/4) ... [2024-06-28 01:38:51,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5823cf55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:38:51, skipping insertion in model container [2024-06-28 01:38:51,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:38:49" (2/4) ... [2024-06-28 01:38:51,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5823cf55 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:38:51, skipping insertion in model container [2024-06-28 01:38:51,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:50" (3/4) ... [2024-06-28 01:38:51,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5823cf55 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:38:51, skipping insertion in model container [2024-06-28 01:38:51,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:38:51" (4/4) ... [2024-06-28 01:38:51,090 INFO L112 eAbstractionObserver]: Analyzing ICFG mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:38:51,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:38:51,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:38:51,104 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:38:51,141 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:38:51,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:38:51,201 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:38:51,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:38:51,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-28 01:38:51,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:38:51,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:38:51,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:38:51,226 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;@656f0937, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:38:51,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:38:51,230 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:38:51,231 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:38:51,231 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:38:51,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:51,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:38:51,232 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:51,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:51,239 INFO L85 PathProgramCache]: Analyzing trace with hash 351715282, now seen corresponding path program 1 times [2024-06-28 01:38:51,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:51,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145073777] [2024-06-28 01:38:51,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:51,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:52,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:52,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145073777] [2024-06-28 01:38:52,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145073777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:52,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:52,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:38:52,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275268714] [2024-06-28 01:38:52,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:52,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:38:52,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:52,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:38:52,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:38:52,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:38:52,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:52,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:52,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:38:52,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:53,042 INFO L124 PetriNetUnfolderBase]: 4180/6823 cut-off events. [2024-06-28 01:38:53,042 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 01:38:53,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12898 conditions, 6823 events. 4180/6823 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 44450 event pairs, 3456 based on Foata normal form. 211/6486 useless extension candidates. Maximal degree in co-relation 12886. Up to 5985 conditions per place. [2024-06-28 01:38:53,082 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 43 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-28 01:38:53,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 231 flow [2024-06-28 01:38:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:38:53,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:38:53,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-28 01:38:53,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2024-06-28 01:38:53,095 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 98 transitions. [2024-06-28 01:38:53,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 231 flow [2024-06-28 01:38:53,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:38:53,103 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 01:38:53,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 01:38:53,108 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:38:53,108 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 01:38:53,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:53,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:53,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:53,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:38:53,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:53,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:53,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1303996367, now seen corresponding path program 1 times [2024-06-28 01:38:53,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:53,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995737098] [2024-06-28 01:38:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:53,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:53,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:53,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995737098] [2024-06-28 01:38:53,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995737098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:53,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:53,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:38:53,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222755833] [2024-06-28 01:38:53,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:53,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:38:53,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:53,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:38:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:38:53,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:53,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:53,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:53,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:53,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:54,412 INFO L124 PetriNetUnfolderBase]: 4775/7040 cut-off events. [2024-06-28 01:38:54,413 INFO L125 PetriNetUnfolderBase]: For 927/927 co-relation queries the response was YES. [2024-06-28 01:38:54,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15474 conditions, 7040 events. 4775/7040 cut-off events. For 927/927 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 39931 event pairs, 2525 based on Foata normal form. 3/6769 useless extension candidates. Maximal degree in co-relation 15462. Up to 6792 conditions per place. [2024-06-28 01:38:54,442 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 56 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-06-28 01:38:54,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 331 flow [2024-06-28 01:38:54,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:38:54,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:38:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-28 01:38:54,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-28 01:38:54,446 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 4 states and 124 transitions. [2024-06-28 01:38:54,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 331 flow [2024-06-28 01:38:54,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 76 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:38:54,453 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 177 flow [2024-06-28 01:38:54,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-28 01:38:54,454 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 01:38:54,454 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 177 flow [2024-06-28 01:38:54,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:54,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:54,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:54,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:38:54,457 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:54,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:54,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1769180589, now seen corresponding path program 1 times [2024-06-28 01:38:54,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:54,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739625793] [2024-06-28 01:38:54,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:54,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:55,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:55,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739625793] [2024-06-28 01:38:55,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739625793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:55,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:55,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:38:55,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745109930] [2024-06-28 01:38:55,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:55,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:38:55,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:55,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:38:55,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:38:55,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:55,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:55,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:55,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:55,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:55,739 INFO L124 PetriNetUnfolderBase]: 4805/7675 cut-off events. [2024-06-28 01:38:55,740 INFO L125 PetriNetUnfolderBase]: For 2872/2872 co-relation queries the response was YES. [2024-06-28 01:38:55,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17673 conditions, 7675 events. 4805/7675 cut-off events. For 2872/2872 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 49029 event pairs, 2769 based on Foata normal form. 5/7172 useless extension candidates. Maximal degree in co-relation 17659. Up to 6710 conditions per place. [2024-06-28 01:38:55,776 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 74 selfloop transitions, 21 changer transitions 0/106 dead transitions. [2024-06-28 01:38:55,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 106 transitions, 535 flow [2024-06-28 01:38:55,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:38:55,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:38:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-06-28 01:38:55,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-28 01:38:55,780 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 177 flow. Second operand 5 states and 162 transitions. [2024-06-28 01:38:55,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 106 transitions, 535 flow [2024-06-28 01:38:55,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 106 transitions, 516 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:38:55,785 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 306 flow [2024-06-28 01:38:55,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2024-06-28 01:38:55,786 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-28 01:38:55,786 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 306 flow [2024-06-28 01:38:55,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:55,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:55,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:55,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:38:55,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:55,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:55,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1481630770, now seen corresponding path program 1 times [2024-06-28 01:38:55,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:55,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771514086] [2024-06-28 01:38:55,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:55,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:56,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:56,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771514086] [2024-06-28 01:38:56,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771514086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:56,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:56,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:38:56,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439355420] [2024-06-28 01:38:56,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:56,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:38:56,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:38:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:38:56,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:56,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:56,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:56,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:56,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:57,420 INFO L124 PetriNetUnfolderBase]: 4856/7729 cut-off events. [2024-06-28 01:38:57,420 INFO L125 PetriNetUnfolderBase]: For 7081/7084 co-relation queries the response was YES. [2024-06-28 01:38:57,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20708 conditions, 7729 events. 4856/7729 cut-off events. For 7081/7084 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 49239 event pairs, 2205 based on Foata normal form. 12/7224 useless extension candidates. Maximal degree in co-relation 20691. Up to 6687 conditions per place. [2024-06-28 01:38:57,449 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 83 selfloop transitions, 25 changer transitions 0/119 dead transitions. [2024-06-28 01:38:57,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 119 transitions, 680 flow [2024-06-28 01:38:57,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:38:57,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:38:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-28 01:38:57,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-06-28 01:38:57,451 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 306 flow. Second operand 6 states and 189 transitions. [2024-06-28 01:38:57,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 119 transitions, 680 flow [2024-06-28 01:38:57,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 119 transitions, 668 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 01:38:57,455 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 381 flow [2024-06-28 01:38:57,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=381, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-06-28 01:38:57,456 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-28 01:38:57,456 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 381 flow [2024-06-28 01:38:57,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:57,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:57,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:57,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:38:57,457 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:57,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash -10719685, now seen corresponding path program 1 times [2024-06-28 01:38:57,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:57,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475480807] [2024-06-28 01:38:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:57,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:57,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475480807] [2024-06-28 01:38:57,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475480807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:57,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:57,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:38:57,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006385994] [2024-06-28 01:38:57,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:57,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:38:57,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:57,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:38:57,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:38:58,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:58,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:58,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:58,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:58,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:58,748 INFO L124 PetriNetUnfolderBase]: 4782/7226 cut-off events. [2024-06-28 01:38:58,749 INFO L125 PetriNetUnfolderBase]: For 8983/8983 co-relation queries the response was YES. [2024-06-28 01:38:58,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21766 conditions, 7226 events. 4782/7226 cut-off events. For 8983/8983 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 42738 event pairs, 1513 based on Foata normal form. 2/6880 useless extension candidates. Maximal degree in co-relation 21745. Up to 6800 conditions per place. [2024-06-28 01:38:58,778 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 71 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2024-06-28 01:38:58,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 611 flow [2024-06-28 01:38:58,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:38:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:38:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:38:58,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:38:58,781 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 381 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:38:58,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 611 flow [2024-06-28 01:38:58,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 93 transitions, 540 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:58,792 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 362 flow [2024-06-28 01:38:58,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-06-28 01:38:58,795 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-28 01:38:58,795 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 362 flow [2024-06-28 01:38:58,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:58,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:58,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:58,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:38:58,796 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:58,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:58,797 INFO L85 PathProgramCache]: Analyzing trace with hash -332799365, now seen corresponding path program 1 times [2024-06-28 01:38:58,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:58,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119613214] [2024-06-28 01:38:58,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:58,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:59,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:59,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119613214] [2024-06-28 01:38:59,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119613214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:59,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:59,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:38:59,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138097574] [2024-06-28 01:38:59,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:59,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:38:59,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:59,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:38:59,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:38:59,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:59,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:59,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:59,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:59,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:00,324 INFO L124 PetriNetUnfolderBase]: 4770/7738 cut-off events. [2024-06-28 01:39:00,324 INFO L125 PetriNetUnfolderBase]: For 10231/10231 co-relation queries the response was YES. [2024-06-28 01:39:00,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21902 conditions, 7738 events. 4770/7738 cut-off events. For 10231/10231 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 50368 event pairs, 1994 based on Foata normal form. 4/7230 useless extension candidates. Maximal degree in co-relation 21878. Up to 6763 conditions per place. [2024-06-28 01:39:00,360 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 81 selfloop transitions, 19 changer transitions 0/110 dead transitions. [2024-06-28 01:39:00,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 110 transitions, 728 flow [2024-06-28 01:39:00,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:00,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:39:00,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:39:00,361 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 362 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:39:00,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 110 transitions, 728 flow [2024-06-28 01:39:00,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 110 transitions, 672 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:00,369 INFO L231 Difference]: Finished difference. Result has 75 places, 86 transitions, 502 flow [2024-06-28 01:39:00,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=75, PETRI_TRANSITIONS=86} [2024-06-28 01:39:00,370 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-28 01:39:00,370 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 86 transitions, 502 flow [2024-06-28 01:39:00,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:00,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:00,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:00,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:39:00,371 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:00,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:00,371 INFO L85 PathProgramCache]: Analyzing trace with hash -347618796, now seen corresponding path program 1 times [2024-06-28 01:39:00,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:00,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931131148] [2024-06-28 01:39:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:00,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:00,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:00,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931131148] [2024-06-28 01:39:00,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931131148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:00,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:00,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:39:00,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766113517] [2024-06-28 01:39:00,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:00,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:39:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:00,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:39:00,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:39:00,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 48 [2024-06-28 01:39:00,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 86 transitions, 502 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:00,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:00,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 48 [2024-06-28 01:39:00,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:00,665 INFO L124 PetriNetUnfolderBase]: 1314/2889 cut-off events. [2024-06-28 01:39:00,665 INFO L125 PetriNetUnfolderBase]: For 4434/4737 co-relation queries the response was YES. [2024-06-28 01:39:00,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6979 conditions, 2889 events. 1314/2889 cut-off events. For 4434/4737 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23258 event pairs, 436 based on Foata normal form. 17/2655 useless extension candidates. Maximal degree in co-relation 6954. Up to 1654 conditions per place. [2024-06-28 01:39:00,681 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 31 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2024-06-28 01:39:00,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 522 flow [2024-06-28 01:39:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:39:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:39:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-28 01:39:00,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-28 01:39:00,682 INFO L175 Difference]: Start difference. First operand has 75 places, 86 transitions, 502 flow. Second operand 3 states and 108 transitions. [2024-06-28 01:39:00,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 522 flow [2024-06-28 01:39:00,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 85 transitions, 505 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:39:00,688 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 423 flow [2024-06-28 01:39:00,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=423, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2024-06-28 01:39:00,689 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2024-06-28 01:39:00,690 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 423 flow [2024-06-28 01:39:00,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:00,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:00,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:00,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:39:00,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:00,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:00,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1717789798, now seen corresponding path program 1 times [2024-06-28 01:39:00,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:00,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790450230] [2024-06-28 01:39:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:00,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:01,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:01,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790450230] [2024-06-28 01:39:01,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790450230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:01,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:01,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:01,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837106568] [2024-06-28 01:39:01,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:01,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:01,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:01,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:01,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:01,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:01,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 423 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:01,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:01,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:01,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:02,278 INFO L124 PetriNetUnfolderBase]: 4775/7241 cut-off events. [2024-06-28 01:39:02,278 INFO L125 PetriNetUnfolderBase]: For 14892/14901 co-relation queries the response was YES. [2024-06-28 01:39:02,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22103 conditions, 7241 events. 4775/7241 cut-off events. For 14892/14901 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 42426 event pairs, 1568 based on Foata normal form. 10/7192 useless extension candidates. Maximal degree in co-relation 22077. Up to 6645 conditions per place. [2024-06-28 01:39:02,317 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 77 selfloop transitions, 25 changer transitions 4/115 dead transitions. [2024-06-28 01:39:02,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 115 transitions, 771 flow [2024-06-28 01:39:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 01:39:02,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-06-28 01:39:02,319 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 423 flow. Second operand 6 states and 158 transitions. [2024-06-28 01:39:02,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 115 transitions, 771 flow [2024-06-28 01:39:02,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 115 transitions, 747 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:39:02,327 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 483 flow [2024-06-28 01:39:02,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=483, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-06-28 01:39:02,329 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-28 01:39:02,329 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 483 flow [2024-06-28 01:39:02,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:02,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:02,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:02,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:39:02,330 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:02,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:02,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1711370938, now seen corresponding path program 2 times [2024-06-28 01:39:02,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:02,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124422104] [2024-06-28 01:39:02,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:02,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:02,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:02,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124422104] [2024-06-28 01:39:02,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124422104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:02,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:02,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:02,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787265130] [2024-06-28 01:39:02,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:02,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:02,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:02,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:02,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:02,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:02,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 483 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:02,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:02,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:02,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:03,652 INFO L124 PetriNetUnfolderBase]: 4229/6439 cut-off events. [2024-06-28 01:39:03,652 INFO L125 PetriNetUnfolderBase]: For 14303/14303 co-relation queries the response was YES. [2024-06-28 01:39:03,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20023 conditions, 6439 events. 4229/6439 cut-off events. For 14303/14303 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 37213 event pairs, 1413 based on Foata normal form. 2/6379 useless extension candidates. Maximal degree in co-relation 19995. Up to 5897 conditions per place. [2024-06-28 01:39:03,688 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 74 selfloop transitions, 25 changer transitions 0/108 dead transitions. [2024-06-28 01:39:03,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 108 transitions, 757 flow [2024-06-28 01:39:03,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:03,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 01:39:03,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:39:03,690 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 483 flow. Second operand 6 states and 150 transitions. [2024-06-28 01:39:03,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 108 transitions, 757 flow [2024-06-28 01:39:03,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 108 transitions, 719 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:03,704 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 504 flow [2024-06-28 01:39:03,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=504, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-06-28 01:39:03,704 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2024-06-28 01:39:03,705 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 504 flow [2024-06-28 01:39:03,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:03,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:03,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:03,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:39:03,707 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:03,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:03,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1712365316, now seen corresponding path program 1 times [2024-06-28 01:39:03,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:03,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140123102] [2024-06-28 01:39:03,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:03,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:04,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:04,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:04,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140123102] [2024-06-28 01:39:04,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140123102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:04,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:04,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458133551] [2024-06-28 01:39:04,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:04,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:04,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:04,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:04,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:04,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:04,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 504 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:04,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:04,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:04,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:05,329 INFO L124 PetriNetUnfolderBase]: 4524/7217 cut-off events. [2024-06-28 01:39:05,330 INFO L125 PetriNetUnfolderBase]: For 18507/18507 co-relation queries the response was YES. [2024-06-28 01:39:05,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22345 conditions, 7217 events. 4524/7217 cut-off events. For 18507/18507 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 44305 event pairs, 1274 based on Foata normal form. 8/7018 useless extension candidates. Maximal degree in co-relation 22316. Up to 5954 conditions per place. [2024-06-28 01:39:05,363 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 107 selfloop transitions, 44 changer transitions 0/160 dead transitions. [2024-06-28 01:39:05,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 160 transitions, 1311 flow [2024-06-28 01:39:05,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:39:05,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 01:39:05,365 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 504 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:39:05,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 160 transitions, 1311 flow [2024-06-28 01:39:05,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 160 transitions, 1145 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:05,377 INFO L231 Difference]: Finished difference. Result has 85 places, 109 transitions, 765 flow [2024-06-28 01:39:05,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=765, PETRI_PLACES=85, PETRI_TRANSITIONS=109} [2024-06-28 01:39:05,377 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-28 01:39:05,378 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 109 transitions, 765 flow [2024-06-28 01:39:05,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:05,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:05,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:05,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:39:05,378 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:05,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:05,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1521827846, now seen corresponding path program 2 times [2024-06-28 01:39:05,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:05,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636950515] [2024-06-28 01:39:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:05,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:05,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:05,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:05,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636950515] [2024-06-28 01:39:05,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636950515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:05,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:05,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:05,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298293945] [2024-06-28 01:39:05,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:05,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:05,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:05,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:05,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:06,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:06,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 109 transitions, 765 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:06,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:06,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:06,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:07,199 INFO L124 PetriNetUnfolderBase]: 4618/7338 cut-off events. [2024-06-28 01:39:07,200 INFO L125 PetriNetUnfolderBase]: For 23253/23255 co-relation queries the response was YES. [2024-06-28 01:39:07,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24792 conditions, 7338 events. 4618/7338 cut-off events. For 23253/23255 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 44792 event pairs, 1258 based on Foata normal form. 6/7129 useless extension candidates. Maximal degree in co-relation 24759. Up to 6018 conditions per place. [2024-06-28 01:39:07,258 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 101 selfloop transitions, 61 changer transitions 0/171 dead transitions. [2024-06-28 01:39:07,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 171 transitions, 1467 flow [2024-06-28 01:39:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:07,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:07,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:39:07,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 01:39:07,260 INFO L175 Difference]: Start difference. First operand has 85 places, 109 transitions, 765 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:39:07,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 171 transitions, 1467 flow [2024-06-28 01:39:07,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 171 transitions, 1433 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 01:39:07,298 INFO L231 Difference]: Finished difference. Result has 95 places, 127 transitions, 1095 flow [2024-06-28 01:39:07,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1095, PETRI_PLACES=95, PETRI_TRANSITIONS=127} [2024-06-28 01:39:07,299 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-06-28 01:39:07,299 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 127 transitions, 1095 flow [2024-06-28 01:39:07,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:07,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:07,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:07,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:39:07,300 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:07,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:07,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1445290298, now seen corresponding path program 3 times [2024-06-28 01:39:07,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:07,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522555766] [2024-06-28 01:39:07,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:07,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:07,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:07,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522555766] [2024-06-28 01:39:07,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522555766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:07,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:07,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:07,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243296272] [2024-06-28 01:39:07,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:07,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:07,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:07,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:07,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:08,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:08,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 127 transitions, 1095 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:08,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:08,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:08,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:09,076 INFO L124 PetriNetUnfolderBase]: 4608/7324 cut-off events. [2024-06-28 01:39:09,077 INFO L125 PetriNetUnfolderBase]: For 27928/27930 co-relation queries the response was YES. [2024-06-28 01:39:09,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26007 conditions, 7324 events. 4608/7324 cut-off events. For 27928/27930 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 44703 event pairs, 1258 based on Foata normal form. 6/7115 useless extension candidates. Maximal degree in co-relation 25968. Up to 6014 conditions per place. [2024-06-28 01:39:09,113 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 96 selfloop transitions, 65 changer transitions 0/170 dead transitions. [2024-06-28 01:39:09,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 170 transitions, 1625 flow [2024-06-28 01:39:09,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:39:09,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 01:39:09,116 INFO L175 Difference]: Start difference. First operand has 95 places, 127 transitions, 1095 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:39:09,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 170 transitions, 1625 flow [2024-06-28 01:39:09,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 170 transitions, 1587 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 01:39:09,145 INFO L231 Difference]: Finished difference. Result has 102 places, 130 transitions, 1245 flow [2024-06-28 01:39:09,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1245, PETRI_PLACES=102, PETRI_TRANSITIONS=130} [2024-06-28 01:39:09,146 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-28 01:39:09,146 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 130 transitions, 1245 flow [2024-06-28 01:39:09,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:09,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:09,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:09,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:39:09,146 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:09,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:09,147 INFO L85 PathProgramCache]: Analyzing trace with hash -393265732, now seen corresponding path program 4 times [2024-06-28 01:39:09,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:09,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376345302] [2024-06-28 01:39:09,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:09,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:09,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:09,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376345302] [2024-06-28 01:39:09,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376345302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:09,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:09,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:09,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371541057] [2024-06-28 01:39:09,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:09,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:09,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:09,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:09,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:09,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 130 transitions, 1245 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:09,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:09,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:09,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:10,861 INFO L124 PetriNetUnfolderBase]: 4968/7854 cut-off events. [2024-06-28 01:39:10,861 INFO L125 PetriNetUnfolderBase]: For 34903/34905 co-relation queries the response was YES. [2024-06-28 01:39:10,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29929 conditions, 7854 events. 4968/7854 cut-off events. For 34903/34905 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 47849 event pairs, 1246 based on Foata normal form. 10/7661 useless extension candidates. Maximal degree in co-relation 29887. Up to 6241 conditions per place. [2024-06-28 01:39:10,902 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 122 selfloop transitions, 92 changer transitions 0/223 dead transitions. [2024-06-28 01:39:10,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 223 transitions, 2413 flow [2024-06-28 01:39:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:10,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:39:10,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-28 01:39:10,906 INFO L175 Difference]: Start difference. First operand has 102 places, 130 transitions, 1245 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:39:10,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 223 transitions, 2413 flow [2024-06-28 01:39:10,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 223 transitions, 2265 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:10,985 INFO L231 Difference]: Finished difference. Result has 109 places, 166 transitions, 1833 flow [2024-06-28 01:39:10,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1833, PETRI_PLACES=109, PETRI_TRANSITIONS=166} [2024-06-28 01:39:10,986 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-28 01:39:10,986 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 166 transitions, 1833 flow [2024-06-28 01:39:10,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:10,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:10,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:10,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:39:10,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:10,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:10,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1521581768, now seen corresponding path program 1 times [2024-06-28 01:39:10,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:10,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940503712] [2024-06-28 01:39:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:10,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:11,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:11,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940503712] [2024-06-28 01:39:11,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940503712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:11,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:11,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:11,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152663215] [2024-06-28 01:39:11,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:11,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:11,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:12,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:12,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 166 transitions, 1833 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:12,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:12,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:12,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:13,197 INFO L124 PetriNetUnfolderBase]: 4358/7104 cut-off events. [2024-06-28 01:39:13,198 INFO L125 PetriNetUnfolderBase]: For 35189/35191 co-relation queries the response was YES. [2024-06-28 01:39:13,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28228 conditions, 7104 events. 4358/7104 cut-off events. For 35189/35191 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 44417 event pairs, 1315 based on Foata normal form. 4/6906 useless extension candidates. Maximal degree in co-relation 28182. Up to 6136 conditions per place. [2024-06-28 01:39:13,256 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 173 selfloop transitions, 18 changer transitions 0/201 dead transitions. [2024-06-28 01:39:13,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 201 transitions, 2331 flow [2024-06-28 01:39:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:39:13,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 01:39:13,258 INFO L175 Difference]: Start difference. First operand has 109 places, 166 transitions, 1833 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:39:13,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 201 transitions, 2331 flow [2024-06-28 01:39:13,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 201 transitions, 2133 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:13,306 INFO L231 Difference]: Finished difference. Result has 109 places, 169 transitions, 1711 flow [2024-06-28 01:39:13,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1711, PETRI_PLACES=109, PETRI_TRANSITIONS=169} [2024-06-28 01:39:13,306 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-28 01:39:13,307 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 169 transitions, 1711 flow [2024-06-28 01:39:13,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:13,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:13,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:13,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:39:13,307 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:13,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:13,308 INFO L85 PathProgramCache]: Analyzing trace with hash 944932578, now seen corresponding path program 1 times [2024-06-28 01:39:13,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:13,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389213745] [2024-06-28 01:39:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:13,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:13,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:13,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389213745] [2024-06-28 01:39:13,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389213745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:13,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:13,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:39:13,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131689278] [2024-06-28 01:39:13,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:13,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:39:13,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:39:13,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:39:13,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:13,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 169 transitions, 1711 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:13,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:13,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:13,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:14,722 INFO L124 PetriNetUnfolderBase]: 4363/7080 cut-off events. [2024-06-28 01:39:14,723 INFO L125 PetriNetUnfolderBase]: For 36654/36656 co-relation queries the response was YES. [2024-06-28 01:39:14,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28208 conditions, 7080 events. 4363/7080 cut-off events. For 36654/36656 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 44000 event pairs, 1595 based on Foata normal form. 1/6878 useless extension candidates. Maximal degree in co-relation 28163. Up to 6209 conditions per place. [2024-06-28 01:39:14,771 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 170 selfloop transitions, 10 changer transitions 0/190 dead transitions. [2024-06-28 01:39:14,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 190 transitions, 2186 flow [2024-06-28 01:39:14,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:39:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:39:14,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 01:39:14,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-28 01:39:14,773 INFO L175 Difference]: Start difference. First operand has 109 places, 169 transitions, 1711 flow. Second operand 5 states and 119 transitions. [2024-06-28 01:39:14,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 190 transitions, 2186 flow [2024-06-28 01:39:14,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 190 transitions, 2128 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:14,817 INFO L231 Difference]: Finished difference. Result has 110 places, 176 transitions, 1772 flow [2024-06-28 01:39:14,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1772, PETRI_PLACES=110, PETRI_TRANSITIONS=176} [2024-06-28 01:39:14,817 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-28 01:39:14,817 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 176 transitions, 1772 flow [2024-06-28 01:39:14,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:14,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:14,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:14,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:39:14,818 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:14,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:14,818 INFO L85 PathProgramCache]: Analyzing trace with hash 650865598, now seen corresponding path program 1 times [2024-06-28 01:39:14,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:14,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857287786] [2024-06-28 01:39:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:14,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:15,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:15,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857287786] [2024-06-28 01:39:15,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857287786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:15,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:15,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:15,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602808361] [2024-06-28 01:39:15,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:15,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:15,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:15,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:15,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:15,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:15,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 176 transitions, 1772 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:15,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:15,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:15,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:16,595 INFO L124 PetriNetUnfolderBase]: 5175/8202 cut-off events. [2024-06-28 01:39:16,595 INFO L125 PetriNetUnfolderBase]: For 49149/49151 co-relation queries the response was YES. [2024-06-28 01:39:16,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34222 conditions, 8202 events. 5175/8202 cut-off events. For 49149/49151 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 50474 event pairs, 1283 based on Foata normal form. 10/8022 useless extension candidates. Maximal degree in co-relation 34175. Up to 6417 conditions per place. [2024-06-28 01:39:16,653 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 123 selfloop transitions, 111 changer transitions 0/243 dead transitions. [2024-06-28 01:39:16,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 243 transitions, 2775 flow [2024-06-28 01:39:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:16,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:16,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:39:16,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 01:39:16,655 INFO L175 Difference]: Start difference. First operand has 110 places, 176 transitions, 1772 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:39:16,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 243 transitions, 2775 flow [2024-06-28 01:39:16,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 243 transitions, 2751 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 01:39:16,712 INFO L231 Difference]: Finished difference. Result has 116 places, 198 transitions, 2323 flow [2024-06-28 01:39:16,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2323, PETRI_PLACES=116, PETRI_TRANSITIONS=198} [2024-06-28 01:39:16,713 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 62 predicate places. [2024-06-28 01:39:16,713 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 198 transitions, 2323 flow [2024-06-28 01:39:16,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:16,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:16,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:16,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:39:16,714 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:16,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:16,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1568403798, now seen corresponding path program 2 times [2024-06-28 01:39:16,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:16,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909025549] [2024-06-28 01:39:16,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:16,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:17,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:17,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909025549] [2024-06-28 01:39:17,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909025549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:17,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:17,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:17,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690319693] [2024-06-28 01:39:17,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:17,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:17,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:17,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:17,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:17,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:17,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 198 transitions, 2323 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:17,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:17,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:17,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:18,451 INFO L124 PetriNetUnfolderBase]: 5149/8203 cut-off events. [2024-06-28 01:39:18,452 INFO L125 PetriNetUnfolderBase]: For 55227/55235 co-relation queries the response was YES. [2024-06-28 01:39:18,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35540 conditions, 8203 events. 5149/8203 cut-off events. For 55227/55235 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 50772 event pairs, 1321 based on Foata normal form. 18/8031 useless extension candidates. Maximal degree in co-relation 35490. Up to 6396 conditions per place. [2024-06-28 01:39:18,510 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 119 selfloop transitions, 119 changer transitions 0/247 dead transitions. [2024-06-28 01:39:18,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 247 transitions, 3055 flow [2024-06-28 01:39:18,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:39:18,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 01:39:18,512 INFO L175 Difference]: Start difference. First operand has 116 places, 198 transitions, 2323 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:39:18,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 247 transitions, 3055 flow [2024-06-28 01:39:18,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 247 transitions, 2856 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:18,605 INFO L231 Difference]: Finished difference. Result has 121 places, 202 transitions, 2494 flow [2024-06-28 01:39:18,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2127, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2494, PETRI_PLACES=121, PETRI_TRANSITIONS=202} [2024-06-28 01:39:18,606 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-28 01:39:18,606 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 202 transitions, 2494 flow [2024-06-28 01:39:18,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:18,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:18,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:18,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:39:18,607 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:18,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash 75329474, now seen corresponding path program 3 times [2024-06-28 01:39:18,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:18,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639558066] [2024-06-28 01:39:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:18,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:19,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:19,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639558066] [2024-06-28 01:39:19,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639558066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:19,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:19,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675186425] [2024-06-28 01:39:19,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:19,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:19,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:19,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:19,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:19,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 202 transitions, 2494 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:19,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:19,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:19,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:20,397 INFO L124 PetriNetUnfolderBase]: 5133/8150 cut-off events. [2024-06-28 01:39:20,398 INFO L125 PetriNetUnfolderBase]: For 59435/59447 co-relation queries the response was YES. [2024-06-28 01:39:20,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35967 conditions, 8150 events. 5133/8150 cut-off events. For 59435/59447 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 50292 event pairs, 1302 based on Foata normal form. 11/7960 useless extension candidates. Maximal degree in co-relation 35915. Up to 6383 conditions per place. [2024-06-28 01:39:20,461 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 122 selfloop transitions, 110 changer transitions 0/241 dead transitions. [2024-06-28 01:39:20,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 241 transitions, 3114 flow [2024-06-28 01:39:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:39:20,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-28 01:39:20,464 INFO L175 Difference]: Start difference. First operand has 121 places, 202 transitions, 2494 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:39:20,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 241 transitions, 3114 flow [2024-06-28 01:39:20,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 241 transitions, 2934 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:20,547 INFO L231 Difference]: Finished difference. Result has 124 places, 204 transitions, 2575 flow [2024-06-28 01:39:20,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2575, PETRI_PLACES=124, PETRI_TRANSITIONS=204} [2024-06-28 01:39:20,548 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-28 01:39:20,548 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 204 transitions, 2575 flow [2024-06-28 01:39:20,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:20,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:20,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:20,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:39:20,549 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:20,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash -771859387, now seen corresponding path program 1 times [2024-06-28 01:39:20,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:20,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375599562] [2024-06-28 01:39:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:20,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:21,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:21,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375599562] [2024-06-28 01:39:21,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375599562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:21,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:21,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:21,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967553833] [2024-06-28 01:39:21,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:21,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:21,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:21,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:21,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:21,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:21,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 204 transitions, 2575 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:21,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:21,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:21,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:22,274 INFO L124 PetriNetUnfolderBase]: 5138/8152 cut-off events. [2024-06-28 01:39:22,274 INFO L125 PetriNetUnfolderBase]: For 65067/65069 co-relation queries the response was YES. [2024-06-28 01:39:22,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36213 conditions, 8152 events. 5138/8152 cut-off events. For 65067/65069 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 50046 event pairs, 1914 based on Foata normal form. 1/7966 useless extension candidates. Maximal degree in co-relation 36160. Up to 7275 conditions per place. [2024-06-28 01:39:22,324 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 205 selfloop transitions, 13 changer transitions 0/227 dead transitions. [2024-06-28 01:39:22,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 227 transitions, 3101 flow [2024-06-28 01:39:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:22,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:39:22,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:39:22,326 INFO L175 Difference]: Start difference. First operand has 124 places, 204 transitions, 2575 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:39:22,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 227 transitions, 3101 flow [2024-06-28 01:39:22,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 227 transitions, 2926 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:22,406 INFO L231 Difference]: Finished difference. Result has 126 places, 207 transitions, 2464 flow [2024-06-28 01:39:22,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2464, PETRI_PLACES=126, PETRI_TRANSITIONS=207} [2024-06-28 01:39:22,406 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 72 predicate places. [2024-06-28 01:39:22,407 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 207 transitions, 2464 flow [2024-06-28 01:39:22,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:22,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:22,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:22,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:39:22,407 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:22,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1413471041, now seen corresponding path program 1 times [2024-06-28 01:39:22,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:22,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987104021] [2024-06-28 01:39:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:22,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:23,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:23,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987104021] [2024-06-28 01:39:23,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987104021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:23,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:23,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:23,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127102072] [2024-06-28 01:39:23,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:23,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:23,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:23,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:23,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:23,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 207 transitions, 2464 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:23,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:23,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:23,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:24,373 INFO L124 PetriNetUnfolderBase]: 5427/8704 cut-off events. [2024-06-28 01:39:24,373 INFO L125 PetriNetUnfolderBase]: For 75291/75299 co-relation queries the response was YES. [2024-06-28 01:39:24,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38635 conditions, 8704 events. 5427/8704 cut-off events. For 75291/75299 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 54944 event pairs, 1639 based on Foata normal form. 8/8446 useless extension candidates. Maximal degree in co-relation 38580. Up to 7291 conditions per place. [2024-06-28 01:39:24,424 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 178 selfloop transitions, 63 changer transitions 0/251 dead transitions. [2024-06-28 01:39:24,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 251 transitions, 3108 flow [2024-06-28 01:39:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:39:24,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 01:39:24,427 INFO L175 Difference]: Start difference. First operand has 126 places, 207 transitions, 2464 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:39:24,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 251 transitions, 3108 flow [2024-06-28 01:39:24,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 251 transitions, 3068 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:24,522 INFO L231 Difference]: Finished difference. Result has 129 places, 209 transitions, 2587 flow [2024-06-28 01:39:24,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2587, PETRI_PLACES=129, PETRI_TRANSITIONS=209} [2024-06-28 01:39:24,523 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-28 01:39:24,523 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 209 transitions, 2587 flow [2024-06-28 01:39:24,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:24,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:24,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:24,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:39:24,524 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:24,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1416328001, now seen corresponding path program 2 times [2024-06-28 01:39:24,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:24,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088872070] [2024-06-28 01:39:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:24,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:25,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:25,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088872070] [2024-06-28 01:39:25,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088872070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:25,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:25,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:25,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647572739] [2024-06-28 01:39:25,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:25,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:25,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:25,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:25,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:25,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:25,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 209 transitions, 2587 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:25,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:25,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:25,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:26,380 INFO L124 PetriNetUnfolderBase]: 5419/8695 cut-off events. [2024-06-28 01:39:26,380 INFO L125 PetriNetUnfolderBase]: For 83467/83475 co-relation queries the response was YES. [2024-06-28 01:39:26,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39518 conditions, 8695 events. 5419/8695 cut-off events. For 83467/83475 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 55001 event pairs, 1300 based on Foata normal form. 8/8439 useless extension candidates. Maximal degree in co-relation 39462. Up to 7114 conditions per place. [2024-06-28 01:39:26,447 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 187 selfloop transitions, 56 changer transitions 0/253 dead transitions. [2024-06-28 01:39:26,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 253 transitions, 3235 flow [2024-06-28 01:39:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:26,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:39:26,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 01:39:26,448 INFO L175 Difference]: Start difference. First operand has 129 places, 209 transitions, 2587 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:39:26,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 253 transitions, 3235 flow [2024-06-28 01:39:26,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 253 transitions, 3102 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:26,563 INFO L231 Difference]: Finished difference. Result has 131 places, 211 transitions, 2603 flow [2024-06-28 01:39:26,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2603, PETRI_PLACES=131, PETRI_TRANSITIONS=211} [2024-06-28 01:39:26,564 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-06-28 01:39:26,564 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 211 transitions, 2603 flow [2024-06-28 01:39:26,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:26,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:26,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:26,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:39:26,565 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:26,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:26,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1220712465, now seen corresponding path program 1 times [2024-06-28 01:39:26,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:26,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867593826] [2024-06-28 01:39:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:26,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:28,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:28,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867593826] [2024-06-28 01:39:28,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867593826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:28,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:28,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:28,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629796116] [2024-06-28 01:39:28,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:28,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:28,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:28,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:28,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:28,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:28,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 211 transitions, 2603 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:28,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:28,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:28,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:29,488 INFO L124 PetriNetUnfolderBase]: 5607/8884 cut-off events. [2024-06-28 01:39:29,488 INFO L125 PetriNetUnfolderBase]: For 96050/96052 co-relation queries the response was YES. [2024-06-28 01:39:29,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41315 conditions, 8884 events. 5607/8884 cut-off events. For 96050/96052 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 55667 event pairs, 1245 based on Foata normal form. 24/8666 useless extension candidates. Maximal degree in co-relation 41258. Up to 6722 conditions per place. [2024-06-28 01:39:29,554 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 130 selfloop transitions, 125 changer transitions 0/265 dead transitions. [2024-06-28 01:39:29,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 265 transitions, 3319 flow [2024-06-28 01:39:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:29,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:39:29,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-28 01:39:29,557 INFO L175 Difference]: Start difference. First operand has 131 places, 211 transitions, 2603 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:39:29,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 265 transitions, 3319 flow [2024-06-28 01:39:29,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 265 transitions, 3192 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:29,687 INFO L231 Difference]: Finished difference. Result has 134 places, 214 transitions, 2783 flow [2024-06-28 01:39:29,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2476, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2783, PETRI_PLACES=134, PETRI_TRANSITIONS=214} [2024-06-28 01:39:29,688 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 80 predicate places. [2024-06-28 01:39:29,688 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 214 transitions, 2783 flow [2024-06-28 01:39:29,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:29,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:29,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:29,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:39:29,688 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:29,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:29,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1830692097, now seen corresponding path program 1 times [2024-06-28 01:39:29,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:29,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821279721] [2024-06-28 01:39:29,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:29,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:30,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:30,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821279721] [2024-06-28 01:39:30,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821279721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:30,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:30,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:30,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843128170] [2024-06-28 01:39:30,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:30,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:30,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:30,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:30,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:30,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:30,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 214 transitions, 2783 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:30,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:30,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:30,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:31,354 INFO L124 PetriNetUnfolderBase]: 5708/9018 cut-off events. [2024-06-28 01:39:31,354 INFO L125 PetriNetUnfolderBase]: For 100720/100728 co-relation queries the response was YES. [2024-06-28 01:39:31,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43312 conditions, 9018 events. 5708/9018 cut-off events. For 100720/100728 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 56108 event pairs, 1934 based on Foata normal form. 9/8776 useless extension candidates. Maximal degree in co-relation 43254. Up to 8013 conditions per place. [2024-06-28 01:39:31,420 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 222 selfloop transitions, 18 changer transitions 0/250 dead transitions. [2024-06-28 01:39:31,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 250 transitions, 3521 flow [2024-06-28 01:39:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:31,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 01:39:31,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:39:31,422 INFO L175 Difference]: Start difference. First operand has 134 places, 214 transitions, 2783 flow. Second operand 6 states and 140 transitions. [2024-06-28 01:39:31,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 250 transitions, 3521 flow [2024-06-28 01:39:31,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 250 transitions, 3335 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:31,606 INFO L231 Difference]: Finished difference. Result has 136 places, 225 transitions, 2838 flow [2024-06-28 01:39:31,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2838, PETRI_PLACES=136, PETRI_TRANSITIONS=225} [2024-06-28 01:39:31,607 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-28 01:39:31,607 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 225 transitions, 2838 flow [2024-06-28 01:39:31,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:31,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:31,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:31,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:39:31,608 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:31,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:31,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1421671003, now seen corresponding path program 2 times [2024-06-28 01:39:31,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:31,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121551689] [2024-06-28 01:39:31,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:31,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:32,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:32,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:32,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121551689] [2024-06-28 01:39:32,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121551689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:32,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:32,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:32,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298301233] [2024-06-28 01:39:32,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:32,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:32,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:32,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:32,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:32,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:32,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 225 transitions, 2838 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:32,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:32,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:32,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:34,234 INFO L124 PetriNetUnfolderBase]: 5710/9006 cut-off events. [2024-06-28 01:39:34,235 INFO L125 PetriNetUnfolderBase]: For 108701/108709 co-relation queries the response was YES. [2024-06-28 01:39:34,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43681 conditions, 9006 events. 5710/9006 cut-off events. For 108701/108709 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 56030 event pairs, 1444 based on Foata normal form. 6/8742 useless extension candidates. Maximal degree in co-relation 43621. Up to 7124 conditions per place. [2024-06-28 01:39:34,305 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 133 selfloop transitions, 131 changer transitions 0/274 dead transitions. [2024-06-28 01:39:34,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 274 transitions, 3574 flow [2024-06-28 01:39:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:34,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:39:34,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:39:34,307 INFO L175 Difference]: Start difference. First operand has 136 places, 225 transitions, 2838 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:39:34,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 274 transitions, 3574 flow [2024-06-28 01:39:34,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 274 transitions, 3530 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:34,501 INFO L231 Difference]: Finished difference. Result has 141 places, 228 transitions, 3115 flow [2024-06-28 01:39:34,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3115, PETRI_PLACES=141, PETRI_TRANSITIONS=228} [2024-06-28 01:39:34,502 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-06-28 01:39:34,502 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 228 transitions, 3115 flow [2024-06-28 01:39:34,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:34,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:34,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:34,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:39:34,503 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:34,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:34,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1657846363, now seen corresponding path program 3 times [2024-06-28 01:39:34,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:34,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919257482] [2024-06-28 01:39:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:34,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:35,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:35,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919257482] [2024-06-28 01:39:35,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919257482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:35,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:35,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:35,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749882139] [2024-06-28 01:39:35,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:35,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:35,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:35,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:35,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:35,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 228 transitions, 3115 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:35,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:35,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:35,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:36,919 INFO L124 PetriNetUnfolderBase]: 5744/9045 cut-off events. [2024-06-28 01:39:36,920 INFO L125 PetriNetUnfolderBase]: For 123583/123591 co-relation queries the response was YES. [2024-06-28 01:39:36,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45817 conditions, 9045 events. 5744/9045 cut-off events. For 123583/123591 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 56283 event pairs, 1416 based on Foata normal form. 6/8782 useless extension candidates. Maximal degree in co-relation 45756. Up to 7174 conditions per place. [2024-06-28 01:39:37,002 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 133 selfloop transitions, 134 changer transitions 0/277 dead transitions. [2024-06-28 01:39:37,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 277 transitions, 3865 flow [2024-06-28 01:39:37,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:39:37,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-28 01:39:37,003 INFO L175 Difference]: Start difference. First operand has 141 places, 228 transitions, 3115 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:39:37,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 277 transitions, 3865 flow [2024-06-28 01:39:37,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 277 transitions, 3570 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:37,250 INFO L231 Difference]: Finished difference. Result has 143 places, 231 transitions, 3153 flow [2024-06-28 01:39:37,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3153, PETRI_PLACES=143, PETRI_TRANSITIONS=231} [2024-06-28 01:39:37,251 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-28 01:39:37,251 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 231 transitions, 3153 flow [2024-06-28 01:39:37,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:37,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:37,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:37,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:39:37,252 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:37,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1658143033, now seen corresponding path program 4 times [2024-06-28 01:39:37,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:37,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917519258] [2024-06-28 01:39:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:38,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:38,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:38,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917519258] [2024-06-28 01:39:38,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917519258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:38,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:38,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:38,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918146922] [2024-06-28 01:39:38,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:38,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:38,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:38,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:38,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:38,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:38,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 231 transitions, 3153 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:38,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:38,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:38,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:39,672 INFO L124 PetriNetUnfolderBase]: 5736/9035 cut-off events. [2024-06-28 01:39:39,672 INFO L125 PetriNetUnfolderBase]: For 132337/132345 co-relation queries the response was YES. [2024-06-28 01:39:39,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46431 conditions, 9035 events. 5736/9035 cut-off events. For 132337/132345 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 56292 event pairs, 1039 based on Foata normal form. 6/8769 useless extension candidates. Maximal degree in co-relation 46369. Up to 6750 conditions per place. [2024-06-28 01:39:39,740 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 128 selfloop transitions, 145 changer transitions 0/283 dead transitions. [2024-06-28 01:39:39,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 283 transitions, 3929 flow [2024-06-28 01:39:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:39:39,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-06-28 01:39:39,742 INFO L175 Difference]: Start difference. First operand has 143 places, 231 transitions, 3153 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:39:39,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 283 transitions, 3929 flow [2024-06-28 01:39:39,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 283 transitions, 3622 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:39,938 INFO L231 Difference]: Finished difference. Result has 145 places, 234 transitions, 3206 flow [2024-06-28 01:39:39,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2846, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3206, PETRI_PLACES=145, PETRI_TRANSITIONS=234} [2024-06-28 01:39:39,939 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 91 predicate places. [2024-06-28 01:39:39,940 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 234 transitions, 3206 flow [2024-06-28 01:39:39,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:39,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:39,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:39,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:39:39,940 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:39,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1649354329, now seen corresponding path program 2 times [2024-06-28 01:39:39,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:39,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511449976] [2024-06-28 01:39:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:39,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:40,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:40,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511449976] [2024-06-28 01:39:40,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511449976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:40,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:40,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:40,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882516332] [2024-06-28 01:39:40,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:40,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:40,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:40,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:40,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:40,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:40,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 234 transitions, 3206 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:40,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:40,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:40,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:41,858 INFO L124 PetriNetUnfolderBase]: 5773/9119 cut-off events. [2024-06-28 01:39:41,858 INFO L125 PetriNetUnfolderBase]: For 139728/139758 co-relation queries the response was YES. [2024-06-28 01:39:41,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47536 conditions, 9119 events. 5773/9119 cut-off events. For 139728/139758 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 56815 event pairs, 1937 based on Foata normal form. 25/8892 useless extension candidates. Maximal degree in co-relation 47473. Up to 8085 conditions per place. [2024-06-28 01:39:41,922 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 228 selfloop transitions, 22 changer transitions 0/260 dead transitions. [2024-06-28 01:39:41,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 260 transitions, 3855 flow [2024-06-28 01:39:41,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:41,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:39:41,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:39:41,923 INFO L175 Difference]: Start difference. First operand has 145 places, 234 transitions, 3206 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:39:41,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 260 transitions, 3855 flow [2024-06-28 01:39:42,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 260 transitions, 3519 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:42,142 INFO L231 Difference]: Finished difference. Result has 145 places, 237 transitions, 2968 flow [2024-06-28 01:39:42,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2870, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2968, PETRI_PLACES=145, PETRI_TRANSITIONS=237} [2024-06-28 01:39:42,143 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 91 predicate places. [2024-06-28 01:39:42,143 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 237 transitions, 2968 flow [2024-06-28 01:39:42,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:42,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:42,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:42,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:39:42,144 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:42,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:42,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1836411969, now seen corresponding path program 1 times [2024-06-28 01:39:42,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:42,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376799075] [2024-06-28 01:39:42,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:42,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:42,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:42,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376799075] [2024-06-28 01:39:42,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376799075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:42,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:42,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:42,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536459262] [2024-06-28 01:39:42,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:42,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:42,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:42,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:42,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:42,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:42,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 237 transitions, 2968 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:42,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:42,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:42,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:43,834 INFO L124 PetriNetUnfolderBase]: 5191/8346 cut-off events. [2024-06-28 01:39:43,834 INFO L125 PetriNetUnfolderBase]: For 128380/128382 co-relation queries the response was YES. [2024-06-28 01:39:43,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43266 conditions, 8346 events. 5191/8346 cut-off events. For 128380/128382 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 52620 event pairs, 1777 based on Foata normal form. 1/8096 useless extension candidates. Maximal degree in co-relation 43202. Up to 7318 conditions per place. [2024-06-28 01:39:43,906 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 239 selfloop transitions, 14 changer transitions 0/264 dead transitions. [2024-06-28 01:39:43,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 264 transitions, 3635 flow [2024-06-28 01:39:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:39:43,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:39:43,907 INFO L175 Difference]: Start difference. First operand has 145 places, 237 transitions, 2968 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:39:43,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 264 transitions, 3635 flow [2024-06-28 01:39:44,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 264 transitions, 3567 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:44,200 INFO L231 Difference]: Finished difference. Result has 148 places, 244 transitions, 3042 flow [2024-06-28 01:39:44,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2900, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3042, PETRI_PLACES=148, PETRI_TRANSITIONS=244} [2024-06-28 01:39:44,202 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-28 01:39:44,205 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 244 transitions, 3042 flow [2024-06-28 01:39:44,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:44,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:44,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:44,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:39:44,206 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:44,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:44,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1649348377, now seen corresponding path program 2 times [2024-06-28 01:39:44,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:44,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113551356] [2024-06-28 01:39:44,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:44,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:44,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:44,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113551356] [2024-06-28 01:39:44,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113551356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:44,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:44,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:44,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893536143] [2024-06-28 01:39:44,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:44,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:44,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:44,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:44,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:44,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:44,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 244 transitions, 3042 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:44,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:44,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:44,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:45,958 INFO L124 PetriNetUnfolderBase]: 5166/8297 cut-off events. [2024-06-28 01:39:45,959 INFO L125 PetriNetUnfolderBase]: For 135576/135587 co-relation queries the response was YES. [2024-06-28 01:39:45,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44131 conditions, 8297 events. 5166/8297 cut-off events. For 135576/135587 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 52222 event pairs, 1754 based on Foata normal form. 7/8064 useless extension candidates. Maximal degree in co-relation 44065. Up to 7262 conditions per place. [2024-06-28 01:39:46,034 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 237 selfloop transitions, 19 changer transitions 0/267 dead transitions. [2024-06-28 01:39:46,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 267 transitions, 3680 flow [2024-06-28 01:39:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:39:46,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:39:46,035 INFO L175 Difference]: Start difference. First operand has 148 places, 244 transitions, 3042 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:39:46,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 267 transitions, 3680 flow [2024-06-28 01:39:46,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 267 transitions, 3633 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:46,311 INFO L231 Difference]: Finished difference. Result has 151 places, 247 transitions, 3083 flow [2024-06-28 01:39:46,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2995, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3083, PETRI_PLACES=151, PETRI_TRANSITIONS=247} [2024-06-28 01:39:46,313 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-28 01:39:46,313 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 247 transitions, 3083 flow [2024-06-28 01:39:46,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:46,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:46,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:46,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:39:46,313 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:46,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:46,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1842164577, now seen corresponding path program 1 times [2024-06-28 01:39:46,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:46,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843549772] [2024-06-28 01:39:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:46,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:46,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:46,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843549772] [2024-06-28 01:39:46,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843549772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:46,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:46,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:46,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648068796] [2024-06-28 01:39:46,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:46,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:46,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:47,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:47,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 247 transitions, 3083 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:47,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:47,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:47,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:48,111 INFO L124 PetriNetUnfolderBase]: 5475/8635 cut-off events. [2024-06-28 01:39:48,112 INFO L125 PetriNetUnfolderBase]: For 144141/144143 co-relation queries the response was YES. [2024-06-28 01:39:48,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46517 conditions, 8635 events. 5475/8635 cut-off events. For 144141/144143 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 52903 event pairs, 1926 based on Foata normal form. 1/8445 useless extension candidates. Maximal degree in co-relation 46450. Up to 7759 conditions per place. [2024-06-28 01:39:48,186 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 251 selfloop transitions, 16 changer transitions 0/276 dead transitions. [2024-06-28 01:39:48,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 276 transitions, 3775 flow [2024-06-28 01:39:48,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:48,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:39:48,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-28 01:39:48,188 INFO L175 Difference]: Start difference. First operand has 151 places, 247 transitions, 3083 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:39:48,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 276 transitions, 3775 flow [2024-06-28 01:39:48,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 276 transitions, 3711 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:48,387 INFO L231 Difference]: Finished difference. Result has 154 places, 250 transitions, 3101 flow [2024-06-28 01:39:48,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3019, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3101, PETRI_PLACES=154, PETRI_TRANSITIONS=250} [2024-06-28 01:39:48,388 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-06-28 01:39:48,388 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 250 transitions, 3101 flow [2024-06-28 01:39:48,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:48,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:48,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:48,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:39:48,389 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:48,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash -867928331, now seen corresponding path program 1 times [2024-06-28 01:39:48,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:48,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853335309] [2024-06-28 01:39:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:48,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:49,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:49,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853335309] [2024-06-28 01:39:49,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853335309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:49,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:49,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:49,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142296763] [2024-06-28 01:39:49,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:49,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:49,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:49,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:49,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 250 transitions, 3101 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:49,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:49,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:49,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:50,560 INFO L124 PetriNetUnfolderBase]: 5953/9361 cut-off events. [2024-06-28 01:39:50,560 INFO L125 PetriNetUnfolderBase]: For 181148/181156 co-relation queries the response was YES. [2024-06-28 01:39:50,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51810 conditions, 9361 events. 5953/9361 cut-off events. For 181148/181156 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 58143 event pairs, 1484 based on Foata normal form. 22/9128 useless extension candidates. Maximal degree in co-relation 51742. Up to 7006 conditions per place. [2024-06-28 01:39:50,635 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 163 selfloop transitions, 135 changer transitions 0/308 dead transitions. [2024-06-28 01:39:50,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 308 transitions, 3955 flow [2024-06-28 01:39:50,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:50,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:39:50,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 01:39:50,637 INFO L175 Difference]: Start difference. First operand has 154 places, 250 transitions, 3101 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:39:50,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 308 transitions, 3955 flow [2024-06-28 01:39:50,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 308 transitions, 3897 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:50,902 INFO L231 Difference]: Finished difference. Result has 158 places, 255 transitions, 3414 flow [2024-06-28 01:39:50,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3043, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3414, PETRI_PLACES=158, PETRI_TRANSITIONS=255} [2024-06-28 01:39:50,902 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2024-06-28 01:39:50,902 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 255 transitions, 3414 flow [2024-06-28 01:39:50,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:50,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:50,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:50,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:39:50,903 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:50,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:50,904 INFO L85 PathProgramCache]: Analyzing trace with hash -101064291, now seen corresponding path program 2 times [2024-06-28 01:39:50,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:50,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127864055] [2024-06-28 01:39:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:50,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:51,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:51,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127864055] [2024-06-28 01:39:51,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127864055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:51,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:51,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:51,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486985453] [2024-06-28 01:39:51,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:51,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:51,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:51,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:51,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:51,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:51,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 255 transitions, 3414 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:51,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:51,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:51,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:53,274 INFO L124 PetriNetUnfolderBase]: 6179/9730 cut-off events. [2024-06-28 01:39:53,275 INFO L125 PetriNetUnfolderBase]: For 209001/209009 co-relation queries the response was YES. [2024-06-28 01:39:53,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55710 conditions, 9730 events. 6179/9730 cut-off events. For 209001/209009 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 60880 event pairs, 1332 based on Foata normal form. 22/9498 useless extension candidates. Maximal degree in co-relation 55640. Up to 6535 conditions per place. [2024-06-28 01:39:53,355 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 177 selfloop transitions, 131 changer transitions 0/318 dead transitions. [2024-06-28 01:39:53,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 318 transitions, 4452 flow [2024-06-28 01:39:53,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:39:53,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 01:39:53,357 INFO L175 Difference]: Start difference. First operand has 158 places, 255 transitions, 3414 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:39:53,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 318 transitions, 4452 flow [2024-06-28 01:39:53,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 318 transitions, 4261 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:53,655 INFO L231 Difference]: Finished difference. Result has 164 places, 264 transitions, 3688 flow [2024-06-28 01:39:53,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3688, PETRI_PLACES=164, PETRI_TRANSITIONS=264} [2024-06-28 01:39:53,655 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 110 predicate places. [2024-06-28 01:39:53,655 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 264 transitions, 3688 flow [2024-06-28 01:39:53,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:53,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:53,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:53,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:39:53,656 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:53,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:53,657 INFO L85 PathProgramCache]: Analyzing trace with hash 916582063, now seen corresponding path program 1 times [2024-06-28 01:39:53,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:53,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233515417] [2024-06-28 01:39:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:53,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:54,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:54,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233515417] [2024-06-28 01:39:54,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233515417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:54,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:54,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:54,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939555821] [2024-06-28 01:39:54,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:54,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:54,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:54,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:54,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:54,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:54,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 264 transitions, 3688 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:54,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:54,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:54,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:55,901 INFO L124 PetriNetUnfolderBase]: 6186/9772 cut-off events. [2024-06-28 01:39:55,901 INFO L125 PetriNetUnfolderBase]: For 212041/212070 co-relation queries the response was YES. [2024-06-28 01:39:55,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57240 conditions, 9772 events. 6186/9772 cut-off events. For 212041/212070 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 61661 event pairs, 2000 based on Foata normal form. 28/9544 useless extension candidates. Maximal degree in co-relation 57166. Up to 8512 conditions per place. [2024-06-28 01:39:55,980 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 273 selfloop transitions, 50 changer transitions 0/333 dead transitions. [2024-06-28 01:39:55,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 333 transitions, 5157 flow [2024-06-28 01:39:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:55,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:55,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:39:55,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-28 01:39:55,981 INFO L175 Difference]: Start difference. First operand has 164 places, 264 transitions, 3688 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:39:55,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 333 transitions, 5157 flow [2024-06-28 01:39:56,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 333 transitions, 4962 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:56,325 INFO L231 Difference]: Finished difference. Result has 170 places, 298 transitions, 4399 flow [2024-06-28 01:39:56,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3511, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4399, PETRI_PLACES=170, PETRI_TRANSITIONS=298} [2024-06-28 01:39:56,325 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2024-06-28 01:39:56,325 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 298 transitions, 4399 flow [2024-06-28 01:39:56,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:56,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:56,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:56,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:39:56,326 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:56,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:56,326 INFO L85 PathProgramCache]: Analyzing trace with hash -818343907, now seen corresponding path program 3 times [2024-06-28 01:39:56,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:56,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367046149] [2024-06-28 01:39:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:56,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:56,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:56,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367046149] [2024-06-28 01:39:56,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367046149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:56,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:56,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:56,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769731352] [2024-06-28 01:39:56,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:56,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:56,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:57,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:57,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 298 transitions, 4399 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:57,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:57,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:57,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:58,846 INFO L124 PetriNetUnfolderBase]: 6412/10164 cut-off events. [2024-06-28 01:39:58,847 INFO L125 PetriNetUnfolderBase]: For 235780/235806 co-relation queries the response was YES. [2024-06-28 01:39:58,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61784 conditions, 10164 events. 6412/10164 cut-off events. For 235780/235806 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 64775 event pairs, 1436 based on Foata normal form. 42/9949 useless extension candidates. Maximal degree in co-relation 61706. Up to 7576 conditions per place. [2024-06-28 01:39:58,933 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 195 selfloop transitions, 156 changer transitions 0/361 dead transitions. [2024-06-28 01:39:58,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 361 transitions, 5554 flow [2024-06-28 01:39:58,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 01:39:58,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-28 01:39:58,936 INFO L175 Difference]: Start difference. First operand has 170 places, 298 transitions, 4399 flow. Second operand 8 states and 213 transitions. [2024-06-28 01:39:58,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 361 transitions, 5554 flow [2024-06-28 01:39:59,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 361 transitions, 5452 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:59,402 INFO L231 Difference]: Finished difference. Result has 176 places, 303 transitions, 4758 flow [2024-06-28 01:39:59,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4297, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4758, PETRI_PLACES=176, PETRI_TRANSITIONS=303} [2024-06-28 01:39:59,403 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-06-28 01:39:59,403 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 303 transitions, 4758 flow [2024-06-28 01:39:59,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:59,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:59,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:59,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:39:59,404 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:59,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1588721487, now seen corresponding path program 4 times [2024-06-28 01:39:59,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:59,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151397402] [2024-06-28 01:39:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:59,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:00,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:00,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151397402] [2024-06-28 01:40:00,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151397402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:00,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:00,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:40:00,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459957757] [2024-06-28 01:40:00,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:00,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:40:00,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:00,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:40:00,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:40:00,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:00,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 303 transitions, 4758 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:00,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:00,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:00,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:02,023 INFO L124 PetriNetUnfolderBase]: 6566/10397 cut-off events. [2024-06-28 01:40:02,024 INFO L125 PetriNetUnfolderBase]: For 260817/260843 co-relation queries the response was YES. [2024-06-28 01:40:02,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64577 conditions, 10397 events. 6566/10397 cut-off events. For 260817/260843 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 66449 event pairs, 1804 based on Foata normal form. 46/10184 useless extension candidates. Maximal degree in co-relation 64497. Up to 8217 conditions per place. [2024-06-28 01:40:02,128 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 197 selfloop transitions, 153 changer transitions 0/360 dead transitions. [2024-06-28 01:40:02,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 360 transitions, 5747 flow [2024-06-28 01:40:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:40:02,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 01:40:02,130 INFO L175 Difference]: Start difference. First operand has 176 places, 303 transitions, 4758 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:40:02,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 360 transitions, 5747 flow [2024-06-28 01:40:02,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 360 transitions, 5530 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:02,652 INFO L231 Difference]: Finished difference. Result has 180 places, 305 transitions, 4921 flow [2024-06-28 01:40:02,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4543, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4921, PETRI_PLACES=180, PETRI_TRANSITIONS=305} [2024-06-28 01:40:02,653 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2024-06-28 01:40:02,653 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 305 transitions, 4921 flow [2024-06-28 01:40:02,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:02,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:02,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:02,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:40:02,654 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:02,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:02,654 INFO L85 PathProgramCache]: Analyzing trace with hash -812833657, now seen corresponding path program 5 times [2024-06-28 01:40:02,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:02,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590391357] [2024-06-28 01:40:02,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:02,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:03,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590391357] [2024-06-28 01:40:03,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590391357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:03,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:03,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:40:03,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915161192] [2024-06-28 01:40:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:03,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:40:03,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:03,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:40:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:40:03,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:03,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 305 transitions, 4921 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:03,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:03,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:03,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:05,425 INFO L124 PetriNetUnfolderBase]: 6720/10600 cut-off events. [2024-06-28 01:40:05,425 INFO L125 PetriNetUnfolderBase]: For 275093/275101 co-relation queries the response was YES. [2024-06-28 01:40:05,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66935 conditions, 10600 events. 6720/10600 cut-off events. For 275093/275101 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 67767 event pairs, 1797 based on Foata normal form. 26/10370 useless extension candidates. Maximal degree in co-relation 66853. Up to 8451 conditions per place. [2024-06-28 01:40:05,508 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 205 selfloop transitions, 144 changer transitions 0/359 dead transitions. [2024-06-28 01:40:05,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 359 transitions, 5893 flow [2024-06-28 01:40:05,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:40:05,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 01:40:05,510 INFO L175 Difference]: Start difference. First operand has 180 places, 305 transitions, 4921 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:40:05,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 359 transitions, 5893 flow [2024-06-28 01:40:06,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 359 transitions, 5563 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:06,085 INFO L231 Difference]: Finished difference. Result has 182 places, 307 transitions, 4955 flow [2024-06-28 01:40:06,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4591, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4955, PETRI_PLACES=182, PETRI_TRANSITIONS=307} [2024-06-28 01:40:06,085 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 128 predicate places. [2024-06-28 01:40:06,086 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 307 transitions, 4955 flow [2024-06-28 01:40:06,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:06,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:06,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:06,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:40:06,086 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:06,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:06,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1583143905, now seen corresponding path program 1 times [2024-06-28 01:40:06,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:06,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194114122] [2024-06-28 01:40:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:06,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:07,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:07,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194114122] [2024-06-28 01:40:07,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194114122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:07,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:07,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:07,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648055060] [2024-06-28 01:40:07,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:07,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:07,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:07,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:07,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:07,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:07,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 307 transitions, 4955 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:07,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:07,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:07,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:09,417 INFO L124 PetriNetUnfolderBase]: 6834/10774 cut-off events. [2024-06-28 01:40:09,417 INFO L125 PetriNetUnfolderBase]: For 281498/281506 co-relation queries the response was YES. [2024-06-28 01:40:09,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67857 conditions, 10774 events. 6834/10774 cut-off events. For 281498/281506 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 69148 event pairs, 1670 based on Foata normal form. 18/10533 useless extension candidates. Maximal degree in co-relation 67774. Up to 7911 conditions per place. [2024-06-28 01:40:09,508 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 201 selfloop transitions, 150 changer transitions 0/361 dead transitions. [2024-06-28 01:40:09,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 361 transitions, 5925 flow [2024-06-28 01:40:09,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:09,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:40:09,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-28 01:40:09,510 INFO L175 Difference]: Start difference. First operand has 182 places, 307 transitions, 4955 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:40:09,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 361 transitions, 5925 flow [2024-06-28 01:40:10,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 361 transitions, 5609 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:10,037 INFO L231 Difference]: Finished difference. Result has 184 places, 309 transitions, 5007 flow [2024-06-28 01:40:10,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4639, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5007, PETRI_PLACES=184, PETRI_TRANSITIONS=309} [2024-06-28 01:40:10,038 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-28 01:40:10,038 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 309 transitions, 5007 flow [2024-06-28 01:40:10,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:10,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:10,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:10,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:40:10,038 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:10,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash -714643867, now seen corresponding path program 2 times [2024-06-28 01:40:10,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:10,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135119933] [2024-06-28 01:40:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:10,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:10,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:10,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135119933] [2024-06-28 01:40:10,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135119933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:10,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:10,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:10,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913045344] [2024-06-28 01:40:10,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:10,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:10,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:10,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:10,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:10,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:10,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 309 transitions, 5007 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:10,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:10,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:10,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:12,367 INFO L124 PetriNetUnfolderBase]: 6894/10877 cut-off events. [2024-06-28 01:40:12,367 INFO L125 PetriNetUnfolderBase]: For 282035/282052 co-relation queries the response was YES. [2024-06-28 01:40:12,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68496 conditions, 10877 events. 6894/10877 cut-off events. For 282035/282052 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 70039 event pairs, 2214 based on Foata normal form. 14/10635 useless extension candidates. Maximal degree in co-relation 68412. Up to 9463 conditions per place. [2024-06-28 01:40:12,467 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 287 selfloop transitions, 51 changer transitions 0/348 dead transitions. [2024-06-28 01:40:12,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 348 transitions, 6013 flow [2024-06-28 01:40:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:40:12,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:40:12,468 INFO L175 Difference]: Start difference. First operand has 184 places, 309 transitions, 5007 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:40:12,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 348 transitions, 6013 flow [2024-06-28 01:40:13,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 348 transitions, 5677 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:13,220 INFO L231 Difference]: Finished difference. Result has 186 places, 317 transitions, 4933 flow [2024-06-28 01:40:13,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4933, PETRI_PLACES=186, PETRI_TRANSITIONS=317} [2024-06-28 01:40:13,221 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 132 predicate places. [2024-06-28 01:40:13,221 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 317 transitions, 4933 flow [2024-06-28 01:40:13,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:13,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:13,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:13,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:40:13,221 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:13,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:13,222 INFO L85 PathProgramCache]: Analyzing trace with hash -714643464, now seen corresponding path program 1 times [2024-06-28 01:40:13,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:13,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384042138] [2024-06-28 01:40:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:13,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:13,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:13,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384042138] [2024-06-28 01:40:13,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384042138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:13,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:13,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:13,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225149210] [2024-06-28 01:40:13,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:13,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:13,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:13,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:13,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:13,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:40:13,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 317 transitions, 4933 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:13,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:13,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:40:13,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:15,670 INFO L124 PetriNetUnfolderBase]: 7216/11236 cut-off events. [2024-06-28 01:40:15,671 INFO L125 PetriNetUnfolderBase]: For 291885/291900 co-relation queries the response was YES. [2024-06-28 01:40:15,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71031 conditions, 11236 events. 7216/11236 cut-off events. For 291885/291900 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 70721 event pairs, 2396 based on Foata normal form. 13/11018 useless extension candidates. Maximal degree in co-relation 70945. Up to 10300 conditions per place. [2024-06-28 01:40:15,782 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 322 selfloop transitions, 25 changer transitions 0/355 dead transitions. [2024-06-28 01:40:15,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 355 transitions, 5881 flow [2024-06-28 01:40:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:15,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 01:40:15,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348958333333333 [2024-06-28 01:40:15,786 INFO L175 Difference]: Start difference. First operand has 186 places, 317 transitions, 4933 flow. Second operand 8 states and 167 transitions. [2024-06-28 01:40:15,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 355 transitions, 5881 flow [2024-06-28 01:40:16,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 355 transitions, 5780 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:16,433 INFO L231 Difference]: Finished difference. Result has 193 places, 327 transitions, 5035 flow [2024-06-28 01:40:16,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4833, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5035, PETRI_PLACES=193, PETRI_TRANSITIONS=327} [2024-06-28 01:40:16,435 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-28 01:40:16,435 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 327 transitions, 5035 flow [2024-06-28 01:40:16,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:16,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:16,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:16,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:40:16,436 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:16,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:16,437 INFO L85 PathProgramCache]: Analyzing trace with hash -397833665, now seen corresponding path program 6 times [2024-06-28 01:40:16,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:16,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593853733] [2024-06-28 01:40:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:16,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:17,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:17,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593853733] [2024-06-28 01:40:17,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593853733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:17,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:17,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:40:17,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535876075] [2024-06-28 01:40:17,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:17,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:40:17,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:17,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:40:17,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:40:17,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:17,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 327 transitions, 5035 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:17,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:17,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:17,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:19,313 INFO L124 PetriNetUnfolderBase]: 6938/10929 cut-off events. [2024-06-28 01:40:19,313 INFO L125 PetriNetUnfolderBase]: For 306232/306273 co-relation queries the response was YES. [2024-06-28 01:40:19,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70004 conditions, 10929 events. 6938/10929 cut-off events. For 306232/306273 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 69959 event pairs, 1838 based on Foata normal form. 32/10681 useless extension candidates. Maximal degree in co-relation 69914. Up to 8759 conditions per place. [2024-06-28 01:40:19,423 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 227 selfloop transitions, 138 changer transitions 0/376 dead transitions. [2024-06-28 01:40:19,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 376 transitions, 5989 flow [2024-06-28 01:40:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:19,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:40:19,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-28 01:40:19,430 INFO L175 Difference]: Start difference. First operand has 193 places, 327 transitions, 5035 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:40:19,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 376 transitions, 5989 flow [2024-06-28 01:40:20,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 376 transitions, 5889 flow, removed 40 selfloop flow, removed 2 redundant places. [2024-06-28 01:40:20,176 INFO L231 Difference]: Finished difference. Result has 199 places, 328 transitions, 5247 flow [2024-06-28 01:40:20,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4945, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5247, PETRI_PLACES=199, PETRI_TRANSITIONS=328} [2024-06-28 01:40:20,177 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 145 predicate places. [2024-06-28 01:40:20,177 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 328 transitions, 5247 flow [2024-06-28 01:40:20,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:20,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:20,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:20,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:40:20,178 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:20,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash -366077375, now seen corresponding path program 2 times [2024-06-28 01:40:20,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:20,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476700814] [2024-06-28 01:40:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:20,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:21,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:21,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476700814] [2024-06-28 01:40:21,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476700814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:21,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:21,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:21,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867666834] [2024-06-28 01:40:21,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:21,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:21,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:21,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:21,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:21,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:21,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 328 transitions, 5247 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:21,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:21,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:21,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:23,351 INFO L124 PetriNetUnfolderBase]: 6923/10904 cut-off events. [2024-06-28 01:40:23,351 INFO L125 PetriNetUnfolderBase]: For 303116/303157 co-relation queries the response was YES. [2024-06-28 01:40:23,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69940 conditions, 10904 events. 6923/10904 cut-off events. For 303116/303157 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 69820 event pairs, 1807 based on Foata normal form. 24/10639 useless extension candidates. Maximal degree in co-relation 69848. Up to 8584 conditions per place. [2024-06-28 01:40:23,466 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 224 selfloop transitions, 142 changer transitions 0/377 dead transitions. [2024-06-28 01:40:23,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 377 transitions, 6183 flow [2024-06-28 01:40:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:40:23,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 01:40:23,468 INFO L175 Difference]: Start difference. First operand has 199 places, 328 transitions, 5247 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:40:23,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 377 transitions, 6183 flow [2024-06-28 01:40:24,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 377 transitions, 5959 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:24,137 INFO L231 Difference]: Finished difference. Result has 202 places, 328 transitions, 5314 flow [2024-06-28 01:40:24,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5023, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5314, PETRI_PLACES=202, PETRI_TRANSITIONS=328} [2024-06-28 01:40:24,138 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-28 01:40:24,138 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 328 transitions, 5314 flow [2024-06-28 01:40:24,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:24,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:24,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:24,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:40:24,139 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:24,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:24,139 INFO L85 PathProgramCache]: Analyzing trace with hash -356880605, now seen corresponding path program 3 times [2024-06-28 01:40:24,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:24,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584775993] [2024-06-28 01:40:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:24,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:25,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:25,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584775993] [2024-06-28 01:40:25,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584775993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:25,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:25,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:25,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185096861] [2024-06-28 01:40:25,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:25,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:25,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:25,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:25,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:25,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:25,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 328 transitions, 5314 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:25,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:25,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:25,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:27,063 INFO L124 PetriNetUnfolderBase]: 6926/10885 cut-off events. [2024-06-28 01:40:27,064 INFO L125 PetriNetUnfolderBase]: For 305399/305436 co-relation queries the response was YES. [2024-06-28 01:40:27,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69450 conditions, 10885 events. 6926/10885 cut-off events. For 305399/305436 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 69489 event pairs, 1396 based on Foata normal form. 24/10626 useless extension candidates. Maximal degree in co-relation 69356. Up to 7449 conditions per place. [2024-06-28 01:40:27,164 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 208 selfloop transitions, 158 changer transitions 0/377 dead transitions. [2024-06-28 01:40:27,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 377 transitions, 6228 flow [2024-06-28 01:40:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:27,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:40:27,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-28 01:40:27,176 INFO L175 Difference]: Start difference. First operand has 202 places, 328 transitions, 5314 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:40:27,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 377 transitions, 6228 flow [2024-06-28 01:40:27,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 377 transitions, 5628 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 01:40:27,642 INFO L231 Difference]: Finished difference. Result has 200 places, 329 transitions, 5025 flow [2024-06-28 01:40:27,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4652, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5025, PETRI_PLACES=200, PETRI_TRANSITIONS=329} [2024-06-28 01:40:27,644 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 146 predicate places. [2024-06-28 01:40:27,644 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 329 transitions, 5025 flow [2024-06-28 01:40:27,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:27,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:27,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:27,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:40:27,645 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:27,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:27,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1272512996, now seen corresponding path program 2 times [2024-06-28 01:40:27,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:27,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791058437] [2024-06-28 01:40:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:27,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:28,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:28,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791058437] [2024-06-28 01:40:28,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791058437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:28,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:28,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:28,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815743157] [2024-06-28 01:40:28,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:28,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:28,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:28,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:28,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:28,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:40:28,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 329 transitions, 5025 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:28,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:28,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:40:28,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:30,053 INFO L124 PetriNetUnfolderBase]: 7168/11155 cut-off events. [2024-06-28 01:40:30,054 INFO L125 PetriNetUnfolderBase]: For 302534/302561 co-relation queries the response was YES. [2024-06-28 01:40:30,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69148 conditions, 11155 events. 7168/11155 cut-off events. For 302534/302561 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 69921 event pairs, 2318 based on Foata normal form. 19/10943 useless extension candidates. Maximal degree in co-relation 69055. Up to 10138 conditions per place. [2024-06-28 01:40:30,172 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 317 selfloop transitions, 39 changer transitions 0/364 dead transitions. [2024-06-28 01:40:30,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 364 transitions, 6093 flow [2024-06-28 01:40:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 01:40:30,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:40:30,173 INFO L175 Difference]: Start difference. First operand has 200 places, 329 transitions, 5025 flow. Second operand 7 states and 154 transitions. [2024-06-28 01:40:30,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 364 transitions, 6093 flow [2024-06-28 01:40:30,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 364 transitions, 5742 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:30,845 INFO L231 Difference]: Finished difference. Result has 201 places, 335 transitions, 4880 flow [2024-06-28 01:40:30,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4674, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4880, PETRI_PLACES=201, PETRI_TRANSITIONS=335} [2024-06-28 01:40:30,846 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 147 predicate places. [2024-06-28 01:40:30,847 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 335 transitions, 4880 flow [2024-06-28 01:40:30,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:30,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:30,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:30,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:40:30,847 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:30,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash 409625120, now seen corresponding path program 3 times [2024-06-28 01:40:30,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:30,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233021358] [2024-06-28 01:40:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:30,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:31,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:31,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233021358] [2024-06-28 01:40:31,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233021358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:31,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:31,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:31,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449119719] [2024-06-28 01:40:31,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:31,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:31,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:31,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:31,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:31,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:40:31,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 335 transitions, 4880 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:31,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:31,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:40:31,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:33,377 INFO L124 PetriNetUnfolderBase]: 7188/11182 cut-off events. [2024-06-28 01:40:33,378 INFO L125 PetriNetUnfolderBase]: For 308628/308655 co-relation queries the response was YES. [2024-06-28 01:40:33,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68968 conditions, 11182 events. 7188/11182 cut-off events. For 308628/308655 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 70041 event pairs, 2322 based on Foata normal form. 19/10970 useless extension candidates. Maximal degree in co-relation 68874. Up to 10159 conditions per place. [2024-06-28 01:40:33,505 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 317 selfloop transitions, 42 changer transitions 0/367 dead transitions. [2024-06-28 01:40:33,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 367 transitions, 5904 flow [2024-06-28 01:40:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-28 01:40:33,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 01:40:33,506 INFO L175 Difference]: Start difference. First operand has 201 places, 335 transitions, 4880 flow. Second operand 8 states and 168 transitions. [2024-06-28 01:40:33,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 367 transitions, 5904 flow [2024-06-28 01:40:34,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 367 transitions, 5816 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:34,115 INFO L231 Difference]: Finished difference. Result has 206 places, 338 transitions, 4946 flow [2024-06-28 01:40:34,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4798, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4946, PETRI_PLACES=206, PETRI_TRANSITIONS=338} [2024-06-28 01:40:34,116 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 152 predicate places. [2024-06-28 01:40:34,116 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 338 transitions, 4946 flow [2024-06-28 01:40:34,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:34,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:34,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:34,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:40:34,117 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:34,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:34,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1272067123, now seen corresponding path program 3 times [2024-06-28 01:40:34,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:34,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417951907] [2024-06-28 01:40:34,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:34,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:34,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:34,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417951907] [2024-06-28 01:40:34,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417951907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:34,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:34,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:40:34,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875491314] [2024-06-28 01:40:34,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:34,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:40:34,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:34,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:40:34,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:40:34,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:34,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 338 transitions, 4946 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:34,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:34,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:34,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:36,686 INFO L124 PetriNetUnfolderBase]: 6959/10869 cut-off events. [2024-06-28 01:40:36,686 INFO L125 PetriNetUnfolderBase]: For 320595/320667 co-relation queries the response was YES. [2024-06-28 01:40:36,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68217 conditions, 10869 events. 6959/10869 cut-off events. For 320595/320667 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 68643 event pairs, 2130 based on Foata normal form. 13/10633 useless extension candidates. Maximal degree in co-relation 68121. Up to 9367 conditions per place. [2024-06-28 01:40:36,804 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 297 selfloop transitions, 65 changer transitions 0/376 dead transitions. [2024-06-28 01:40:36,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 376 transitions, 6146 flow [2024-06-28 01:40:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:40:36,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:40:36,806 INFO L175 Difference]: Start difference. First operand has 206 places, 338 transitions, 4946 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:40:36,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 376 transitions, 6146 flow [2024-06-28 01:40:37,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 376 transitions, 6047 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:37,617 INFO L231 Difference]: Finished difference. Result has 209 places, 346 transitions, 5149 flow [2024-06-28 01:40:37,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4847, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5149, PETRI_PLACES=209, PETRI_TRANSITIONS=346} [2024-06-28 01:40:37,618 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 155 predicate places. [2024-06-28 01:40:37,618 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 346 transitions, 5149 flow [2024-06-28 01:40:37,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:37,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:37,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:37,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:40:37,619 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:37,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:37,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1760865636, now seen corresponding path program 4 times [2024-06-28 01:40:37,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:37,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897824920] [2024-06-28 01:40:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:37,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:38,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:38,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897824920] [2024-06-28 01:40:38,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897824920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:38,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:38,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:38,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509574768] [2024-06-28 01:40:38,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:38,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:38,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:38,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:38,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:38,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:40:38,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 346 transitions, 5149 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:38,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:38,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:40:38,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:40,312 INFO L124 PetriNetUnfolderBase]: 7268/11311 cut-off events. [2024-06-28 01:40:40,312 INFO L125 PetriNetUnfolderBase]: For 341382/341382 co-relation queries the response was YES. [2024-06-28 01:40:40,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71942 conditions, 11311 events. 7268/11311 cut-off events. For 341382/341382 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 71181 event pairs, 2407 based on Foata normal form. 1/11074 useless extension candidates. Maximal degree in co-relation 71844. Up to 10335 conditions per place. [2024-06-28 01:40:40,409 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 346 selfloop transitions, 35 changer transitions 0/389 dead transitions. [2024-06-28 01:40:40,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 389 transitions, 6159 flow [2024-06-28 01:40:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 01:40:40,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:40:40,410 INFO L175 Difference]: Start difference. First operand has 209 places, 346 transitions, 5149 flow. Second operand 8 states and 176 transitions. [2024-06-28 01:40:40,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 389 transitions, 6159 flow [2024-06-28 01:40:40,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 389 transitions, 5939 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:40,989 INFO L231 Difference]: Finished difference. Result has 215 places, 356 transitions, 5149 flow [2024-06-28 01:40:40,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4933, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5149, PETRI_PLACES=215, PETRI_TRANSITIONS=356} [2024-06-28 01:40:40,990 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 161 predicate places. [2024-06-28 01:40:40,990 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 356 transitions, 5149 flow [2024-06-28 01:40:40,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:40,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:40,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:40,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:40:40,991 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:40,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:40,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1094076841, now seen corresponding path program 1 times [2024-06-28 01:40:40,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:40,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231286583] [2024-06-28 01:40:40,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:40,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:41,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:41,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231286583] [2024-06-28 01:40:41,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231286583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:41,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:41,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:40:41,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882455105] [2024-06-28 01:40:41,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:41,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:40:41,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:41,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:40:41,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:40:41,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:40:41,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 356 transitions, 5149 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:41,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:41,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:40:41,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:43,487 INFO L124 PetriNetUnfolderBase]: 6440/10294 cut-off events. [2024-06-28 01:40:43,487 INFO L125 PetriNetUnfolderBase]: For 302579/302659 co-relation queries the response was YES. [2024-06-28 01:40:43,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64442 conditions, 10294 events. 6440/10294 cut-off events. For 302579/302659 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 66640 event pairs, 1946 based on Foata normal form. 10/10028 useless extension candidates. Maximal degree in co-relation 64341. Up to 9100 conditions per place. [2024-06-28 01:40:43,605 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 346 selfloop transitions, 30 changer transitions 0/392 dead transitions. [2024-06-28 01:40:43,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 392 transitions, 6108 flow [2024-06-28 01:40:43,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:43,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:43,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:40:43,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:40:43,607 INFO L175 Difference]: Start difference. First operand has 215 places, 356 transitions, 5149 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:40:43,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 392 transitions, 6108 flow [2024-06-28 01:40:44,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 392 transitions, 5998 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 01:40:44,261 INFO L231 Difference]: Finished difference. Result has 216 places, 365 transitions, 5236 flow [2024-06-28 01:40:44,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5039, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5236, PETRI_PLACES=216, PETRI_TRANSITIONS=365} [2024-06-28 01:40:44,262 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 162 predicate places. [2024-06-28 01:40:44,262 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 365 transitions, 5236 flow [2024-06-28 01:40:44,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:44,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:44,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:44,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:40:44,263 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:44,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:44,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1682819491, now seen corresponding path program 2 times [2024-06-28 01:40:44,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:44,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952277357] [2024-06-28 01:40:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:44,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:44,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:44,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952277357] [2024-06-28 01:40:44,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952277357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:44,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:44,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:40:44,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368494829] [2024-06-28 01:40:44,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:44,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:40:44,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:44,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:40:44,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:40:44,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:40:44,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 365 transitions, 5236 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:44,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:44,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:40:44,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:46,703 INFO L124 PetriNetUnfolderBase]: 6491/10361 cut-off events. [2024-06-28 01:40:46,703 INFO L125 PetriNetUnfolderBase]: For 318789/318869 co-relation queries the response was YES. [2024-06-28 01:40:46,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67006 conditions, 10361 events. 6491/10361 cut-off events. For 318789/318869 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 67071 event pairs, 1933 based on Foata normal form. 10/10096 useless extension candidates. Maximal degree in co-relation 66903. Up to 9128 conditions per place. [2024-06-28 01:40:46,824 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 350 selfloop transitions, 38 changer transitions 0/404 dead transitions. [2024-06-28 01:40:46,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 404 transitions, 6390 flow [2024-06-28 01:40:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:46,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:40:46,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:40:46,826 INFO L175 Difference]: Start difference. First operand has 216 places, 365 transitions, 5236 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:40:46,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 404 transitions, 6390 flow [2024-06-28 01:40:47,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 404 transitions, 6295 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:47,567 INFO L231 Difference]: Finished difference. Result has 221 places, 377 transitions, 5429 flow [2024-06-28 01:40:47,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5141, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5429, PETRI_PLACES=221, PETRI_TRANSITIONS=377} [2024-06-28 01:40:47,567 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 167 predicate places. [2024-06-28 01:40:47,567 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 377 transitions, 5429 flow [2024-06-28 01:40:47,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:47,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:47,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:47,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:40:47,568 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:47,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1682819708, now seen corresponding path program 1 times [2024-06-28 01:40:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:47,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537583692] [2024-06-28 01:40:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:47,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:48,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:48,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537583692] [2024-06-28 01:40:48,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537583692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:48,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:48,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:48,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968590261] [2024-06-28 01:40:48,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:48,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:48,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:48,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:48,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 377 transitions, 5429 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:48,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:48,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:48,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:50,130 INFO L124 PetriNetUnfolderBase]: 6768/10658 cut-off events. [2024-06-28 01:40:50,130 INFO L125 PetriNetUnfolderBase]: For 333098/333098 co-relation queries the response was YES. [2024-06-28 01:40:50,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69788 conditions, 10658 events. 6768/10658 cut-off events. For 333098/333098 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 67654 event pairs, 2134 based on Foata normal form. 1/10449 useless extension candidates. Maximal degree in co-relation 69683. Up to 9669 conditions per place. [2024-06-28 01:40:50,246 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 376 selfloop transitions, 21 changer transitions 0/406 dead transitions. [2024-06-28 01:40:50,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 406 transitions, 6410 flow [2024-06-28 01:40:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:50,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 01:40:50,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-06-28 01:40:50,247 INFO L175 Difference]: Start difference. First operand has 221 places, 377 transitions, 5429 flow. Second operand 8 states and 170 transitions. [2024-06-28 01:40:50,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 406 transitions, 6410 flow [2024-06-28 01:40:51,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 406 transitions, 6311 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:51,091 INFO L231 Difference]: Finished difference. Result has 226 places, 380 transitions, 5441 flow [2024-06-28 01:40:51,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5334, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5441, PETRI_PLACES=226, PETRI_TRANSITIONS=380} [2024-06-28 01:40:51,092 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-28 01:40:51,092 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 380 transitions, 5441 flow [2024-06-28 01:40:51,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:51,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:51,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:51,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:40:51,093 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:51,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:51,093 INFO L85 PathProgramCache]: Analyzing trace with hash 409809632, now seen corresponding path program 2 times [2024-06-28 01:40:51,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:51,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908424882] [2024-06-28 01:40:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:51,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:51,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:51,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908424882] [2024-06-28 01:40:51,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908424882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:51,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:51,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:51,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814841410] [2024-06-28 01:40:51,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:51,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:51,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:51,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:51,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:51,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:51,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 380 transitions, 5441 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:51,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:51,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:51,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:53,703 INFO L124 PetriNetUnfolderBase]: 6796/10759 cut-off events. [2024-06-28 01:40:53,704 INFO L125 PetriNetUnfolderBase]: For 344639/344651 co-relation queries the response was YES. [2024-06-28 01:40:53,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70984 conditions, 10759 events. 6796/10759 cut-off events. For 344639/344651 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 68636 event pairs, 2071 based on Foata normal form. 9/10535 useless extension candidates. Maximal degree in co-relation 70877. Up to 9644 conditions per place. [2024-06-28 01:40:53,850 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 374 selfloop transitions, 31 changer transitions 0/414 dead transitions. [2024-06-28 01:40:53,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 414 transitions, 6646 flow [2024-06-28 01:40:53,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:53,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 01:40:53,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:40:53,852 INFO L175 Difference]: Start difference. First operand has 226 places, 380 transitions, 5441 flow. Second operand 7 states and 161 transitions. [2024-06-28 01:40:53,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 414 transitions, 6646 flow [2024-06-28 01:40:54,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 414 transitions, 6573 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:54,800 INFO L231 Difference]: Finished difference. Result has 228 places, 386 transitions, 5558 flow [2024-06-28 01:40:54,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5368, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5558, PETRI_PLACES=228, PETRI_TRANSITIONS=386} [2024-06-28 01:40:54,800 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2024-06-28 01:40:54,801 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 386 transitions, 5558 flow [2024-06-28 01:40:54,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:54,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:54,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:54,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:40:54,801 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:54,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1098868201, now seen corresponding path program 3 times [2024-06-28 01:40:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:54,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325515553] [2024-06-28 01:40:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:55,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:55,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325515553] [2024-06-28 01:40:55,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325515553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:55,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:55,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:55,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363656786] [2024-06-28 01:40:55,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:55,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:55,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:55,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:55,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:55,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:40:55,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 386 transitions, 5558 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:55,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:55,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:40:55,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:57,473 INFO L124 PetriNetUnfolderBase]: 6563/10566 cut-off events. [2024-06-28 01:40:57,473 INFO L125 PetriNetUnfolderBase]: For 363679/363823 co-relation queries the response was YES. [2024-06-28 01:40:57,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70877 conditions, 10566 events. 6563/10566 cut-off events. For 363679/363823 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 69187 event pairs, 1928 based on Foata normal form. 7/10257 useless extension candidates. Maximal degree in co-relation 70770. Up to 9174 conditions per place. [2024-06-28 01:40:57,589 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 357 selfloop transitions, 53 changer transitions 0/429 dead transitions. [2024-06-28 01:40:57,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 429 transitions, 6921 flow [2024-06-28 01:40:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:40:57,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-06-28 01:40:57,591 INFO L175 Difference]: Start difference. First operand has 228 places, 386 transitions, 5558 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:40:57,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 429 transitions, 6921 flow [2024-06-28 01:40:58,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 429 transitions, 6840 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:58,564 INFO L231 Difference]: Finished difference. Result has 235 places, 404 transitions, 5978 flow [2024-06-28 01:40:58,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5479, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5978, PETRI_PLACES=235, PETRI_TRANSITIONS=404} [2024-06-28 01:40:58,565 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 181 predicate places. [2024-06-28 01:40:58,565 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 404 transitions, 5978 flow [2024-06-28 01:40:58,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:58,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:58,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:58,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:40:58,566 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:58,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:58,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1272518948, now seen corresponding path program 3 times [2024-06-28 01:40:58,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:58,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947290806] [2024-06-28 01:40:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:58,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:59,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:59,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:59,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947290806] [2024-06-28 01:40:59,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947290806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:59,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:59,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:59,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648163755] [2024-06-28 01:40:59,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:59,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:59,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:59,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:59,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:59,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:59,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 404 transitions, 5978 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:59,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:59,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:59,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:01,227 INFO L124 PetriNetUnfolderBase]: 6787/10779 cut-off events. [2024-06-28 01:41:01,227 INFO L125 PetriNetUnfolderBase]: For 376917/376929 co-relation queries the response was YES. [2024-06-28 01:41:01,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73455 conditions, 10779 events. 6787/10779 cut-off events. For 376917/376929 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 69265 event pairs, 2106 based on Foata normal form. 9/10551 useless extension candidates. Maximal degree in co-relation 73344. Up to 9633 conditions per place. [2024-06-28 01:41:01,347 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 385 selfloop transitions, 38 changer transitions 0/432 dead transitions. [2024-06-28 01:41:01,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 432 transitions, 7040 flow [2024-06-28 01:41:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:01,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:41:01,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-28 01:41:01,349 INFO L175 Difference]: Start difference. First operand has 235 places, 404 transitions, 5978 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:41:01,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 432 transitions, 7040 flow [2024-06-28 01:41:02,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 432 transitions, 6809 flow, removed 104 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:02,164 INFO L231 Difference]: Finished difference. Result has 239 places, 404 transitions, 5853 flow [2024-06-28 01:41:02,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5771, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5853, PETRI_PLACES=239, PETRI_TRANSITIONS=404} [2024-06-28 01:41:02,165 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 185 predicate places. [2024-06-28 01:41:02,166 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 404 transitions, 5853 flow [2024-06-28 01:41:02,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:02,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:02,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:02,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:41:02,167 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:02,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:02,167 INFO L85 PathProgramCache]: Analyzing trace with hash -411447698, now seen corresponding path program 1 times [2024-06-28 01:41:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:02,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597854662] [2024-06-28 01:41:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:02,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:02,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:02,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597854662] [2024-06-28 01:41:02,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597854662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:02,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:02,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:02,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395922013] [2024-06-28 01:41:02,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:02,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:02,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:02,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:02,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:41:02,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 404 transitions, 5853 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:02,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:02,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:41:02,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:05,001 INFO L124 PetriNetUnfolderBase]: 7190/11367 cut-off events. [2024-06-28 01:41:05,001 INFO L125 PetriNetUnfolderBase]: For 443510/443656 co-relation queries the response was YES. [2024-06-28 01:41:05,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79158 conditions, 11367 events. 7190/11367 cut-off events. For 443510/443656 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 73320 event pairs, 2062 based on Foata normal form. 16/11070 useless extension candidates. Maximal degree in co-relation 79045. Up to 9910 conditions per place. [2024-06-28 01:41:05,128 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 369 selfloop transitions, 54 changer transitions 0/441 dead transitions. [2024-06-28 01:41:05,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 441 transitions, 6917 flow [2024-06-28 01:41:05,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:41:05,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-28 01:41:05,130 INFO L175 Difference]: Start difference. First operand has 239 places, 404 transitions, 5853 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:41:05,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 441 transitions, 6917 flow [2024-06-28 01:41:06,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 441 transitions, 6825 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:06,097 INFO L231 Difference]: Finished difference. Result has 240 places, 409 transitions, 5959 flow [2024-06-28 01:41:06,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5761, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5959, PETRI_PLACES=240, PETRI_TRANSITIONS=409} [2024-06-28 01:41:06,099 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 186 predicate places. [2024-06-28 01:41:06,099 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 409 transitions, 5959 flow [2024-06-28 01:41:06,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:06,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:06,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:06,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:41:06,105 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:06,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:06,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1641438496, now seen corresponding path program 2 times [2024-06-28 01:41:06,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:06,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544209764] [2024-06-28 01:41:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:06,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:06,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:06,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544209764] [2024-06-28 01:41:06,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544209764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:06,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:06,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:06,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388754542] [2024-06-28 01:41:06,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:06,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:06,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:06,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:06,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:06,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:41:06,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 409 transitions, 5959 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:06,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:06,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:41:06,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:08,904 INFO L124 PetriNetUnfolderBase]: 7207/11393 cut-off events. [2024-06-28 01:41:08,904 INFO L125 PetriNetUnfolderBase]: For 456889/457035 co-relation queries the response was YES. [2024-06-28 01:41:08,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79832 conditions, 11393 events. 7207/11393 cut-off events. For 456889/457035 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 73456 event pairs, 2058 based on Foata normal form. 16/11097 useless extension candidates. Maximal degree in co-relation 79718. Up to 9750 conditions per place. [2024-06-28 01:41:09,017 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 361 selfloop transitions, 64 changer transitions 0/443 dead transitions. [2024-06-28 01:41:09,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 443 transitions, 7137 flow [2024-06-28 01:41:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:41:09,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:41:09,019 INFO L175 Difference]: Start difference. First operand has 240 places, 409 transitions, 5959 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:41:09,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 443 transitions, 7137 flow [2024-06-28 01:41:10,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 443 transitions, 7053 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:10,021 INFO L231 Difference]: Finished difference. Result has 244 places, 412 transitions, 6078 flow [2024-06-28 01:41:10,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5875, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6078, PETRI_PLACES=244, PETRI_TRANSITIONS=412} [2024-06-28 01:41:10,021 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 190 predicate places. [2024-06-28 01:41:10,022 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 412 transitions, 6078 flow [2024-06-28 01:41:10,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:10,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:10,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:10,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:41:10,022 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:10,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:10,023 INFO L85 PathProgramCache]: Analyzing trace with hash -586377164, now seen corresponding path program 1 times [2024-06-28 01:41:10,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:10,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406591807] [2024-06-28 01:41:10,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:10,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:10,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:10,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:10,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406591807] [2024-06-28 01:41:10,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406591807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:10,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:10,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:10,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562935342] [2024-06-28 01:41:10,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:10,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:10,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:10,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:10,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:10,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:41:10,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 412 transitions, 6078 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:10,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:10,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:41:10,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:12,934 INFO L124 PetriNetUnfolderBase]: 7491/11712 cut-off events. [2024-06-28 01:41:13,159 INFO L125 PetriNetUnfolderBase]: For 467914/467926 co-relation queries the response was YES. [2024-06-28 01:41:13,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81663 conditions, 11712 events. 7491/11712 cut-off events. For 467914/467926 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 74388 event pairs, 2223 based on Foata normal form. 10/11448 useless extension candidates. Maximal degree in co-relation 81548. Up to 10416 conditions per place. [2024-06-28 01:41:13,271 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 388 selfloop transitions, 60 changer transitions 0/456 dead transitions. [2024-06-28 01:41:13,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 456 transitions, 7254 flow [2024-06-28 01:41:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 01:41:13,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:41:13,274 INFO L175 Difference]: Start difference. First operand has 244 places, 412 transitions, 6078 flow. Second operand 8 states and 184 transitions. [2024-06-28 01:41:13,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 456 transitions, 7254 flow [2024-06-28 01:41:14,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 456 transitions, 7125 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:14,440 INFO L231 Difference]: Finished difference. Result has 248 places, 416 transitions, 6164 flow [2024-06-28 01:41:14,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5949, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6164, PETRI_PLACES=248, PETRI_TRANSITIONS=416} [2024-06-28 01:41:14,440 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 194 predicate places. [2024-06-28 01:41:14,440 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 416 transitions, 6164 flow [2024-06-28 01:41:14,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:14,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:14,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:14,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:41:14,441 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:14,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:14,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1641430002, now seen corresponding path program 2 times [2024-06-28 01:41:14,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:14,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391001102] [2024-06-28 01:41:14,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:14,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:15,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:15,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391001102] [2024-06-28 01:41:15,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391001102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:15,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:15,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:15,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703124453] [2024-06-28 01:41:15,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:15,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:15,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:15,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:15,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:41:15,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 416 transitions, 6164 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:15,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:15,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:41:15,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:17,474 INFO L124 PetriNetUnfolderBase]: 7602/11869 cut-off events. [2024-06-28 01:41:17,474 INFO L125 PetriNetUnfolderBase]: For 493466/493478 co-relation queries the response was YES. [2024-06-28 01:41:17,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84506 conditions, 11869 events. 7602/11869 cut-off events. For 493466/493478 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 75443 event pairs, 2223 based on Foata normal form. 10/11608 useless extension candidates. Maximal degree in co-relation 84390. Up to 10180 conditions per place. [2024-06-28 01:41:17,610 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 380 selfloop transitions, 75 changer transitions 0/463 dead transitions. [2024-06-28 01:41:17,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 463 transitions, 7708 flow [2024-06-28 01:41:17,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 01:41:17,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:41:17,612 INFO L175 Difference]: Start difference. First operand has 248 places, 416 transitions, 6164 flow. Second operand 8 states and 184 transitions. [2024-06-28 01:41:17,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 463 transitions, 7708 flow [2024-06-28 01:41:18,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 463 transitions, 7543 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:18,770 INFO L231 Difference]: Finished difference. Result has 252 places, 424 transitions, 6363 flow [2024-06-28 01:41:18,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5999, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6363, PETRI_PLACES=252, PETRI_TRANSITIONS=424} [2024-06-28 01:41:18,771 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 01:41:18,771 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 424 transitions, 6363 flow [2024-06-28 01:41:18,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:18,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:18,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:18,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:41:18,772 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:18,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:18,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1641429568, now seen corresponding path program 1 times [2024-06-28 01:41:18,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:18,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149781583] [2024-06-28 01:41:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:18,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:19,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:19,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149781583] [2024-06-28 01:41:19,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149781583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:19,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:19,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:19,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770317363] [2024-06-28 01:41:19,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:19,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:19,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:19,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:19,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:19,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:41:19,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 424 transitions, 6363 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:19,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:19,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:41:19,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:21,830 INFO L124 PetriNetUnfolderBase]: 7622/11919 cut-off events. [2024-06-28 01:41:21,830 INFO L125 PetriNetUnfolderBase]: For 519769/519769 co-relation queries the response was YES. [2024-06-28 01:41:21,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86704 conditions, 11919 events. 7622/11919 cut-off events. For 519769/519769 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 75902 event pairs, 2290 based on Foata normal form. 1/11644 useless extension candidates. Maximal degree in co-relation 86586. Up to 10762 conditions per place. [2024-06-28 01:41:21,950 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 412 selfloop transitions, 41 changer transitions 0/461 dead transitions. [2024-06-28 01:41:21,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 461 transitions, 7531 flow [2024-06-28 01:41:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-28 01:41:21,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-28 01:41:21,951 INFO L175 Difference]: Start difference. First operand has 252 places, 424 transitions, 6363 flow. Second operand 8 states and 174 transitions. [2024-06-28 01:41:21,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 461 transitions, 7531 flow [2024-06-28 01:41:23,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 461 transitions, 7355 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:23,229 INFO L231 Difference]: Finished difference. Result has 256 places, 427 transitions, 6353 flow [2024-06-28 01:41:23,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6187, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6353, PETRI_PLACES=256, PETRI_TRANSITIONS=427} [2024-06-28 01:41:23,230 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 202 predicate places. [2024-06-28 01:41:23,230 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 427 transitions, 6353 flow [2024-06-28 01:41:23,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:23,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:23,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:23,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:41:23,230 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:23,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1641442092, now seen corresponding path program 3 times [2024-06-28 01:41:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:23,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352073197] [2024-06-28 01:41:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:23,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:23,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:23,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352073197] [2024-06-28 01:41:23,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352073197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:23,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:23,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:23,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31031163] [2024-06-28 01:41:23,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:23,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:23,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:23,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:23,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:24,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:41:24,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 427 transitions, 6353 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:24,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:24,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:41:24,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:26,412 INFO L124 PetriNetUnfolderBase]: 7641/11943 cut-off events. [2024-06-28 01:41:26,412 INFO L125 PetriNetUnfolderBase]: For 530601/530613 co-relation queries the response was YES. [2024-06-28 01:41:26,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87511 conditions, 11943 events. 7641/11943 cut-off events. For 530601/530613 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 76056 event pairs, 2230 based on Foata normal form. 10/11677 useless extension candidates. Maximal degree in co-relation 87391. Up to 10229 conditions per place. [2024-06-28 01:41:26,576 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 381 selfloop transitions, 79 changer transitions 0/468 dead transitions. [2024-06-28 01:41:26,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 468 transitions, 7680 flow [2024-06-28 01:41:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:26,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 01:41:26,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:41:26,578 INFO L175 Difference]: Start difference. First operand has 256 places, 427 transitions, 6353 flow. Second operand 8 states and 184 transitions. [2024-06-28 01:41:26,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 468 transitions, 7680 flow [2024-06-28 01:41:27,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 468 transitions, 7548 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:27,977 INFO L231 Difference]: Finished difference. Result has 258 places, 431 transitions, 6473 flow [2024-06-28 01:41:27,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6221, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6473, PETRI_PLACES=258, PETRI_TRANSITIONS=431} [2024-06-28 01:41:27,978 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 204 predicate places. [2024-06-28 01:41:27,978 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 431 transitions, 6473 flow [2024-06-28 01:41:27,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:27,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:27,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:27,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:41:27,979 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:27,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:27,979 INFO L85 PathProgramCache]: Analyzing trace with hash 979811808, now seen corresponding path program 3 times [2024-06-28 01:41:27,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:27,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691703917] [2024-06-28 01:41:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:27,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:28,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:28,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691703917] [2024-06-28 01:41:28,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691703917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:28,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:28,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:28,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712874528] [2024-06-28 01:41:28,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:28,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:28,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:28,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:28,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:28,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:41:28,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 431 transitions, 6473 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:28,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:28,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:41:28,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:31,233 INFO L124 PetriNetUnfolderBase]: 7525/11867 cut-off events. [2024-06-28 01:41:31,233 INFO L125 PetriNetUnfolderBase]: For 556820/557063 co-relation queries the response was YES. [2024-06-28 01:41:31,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89001 conditions, 11867 events. 7525/11867 cut-off events. For 556820/557063 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 76717 event pairs, 2105 based on Foata normal form. 22/11543 useless extension candidates. Maximal degree in co-relation 88880. Up to 10302 conditions per place. [2024-06-28 01:41:31,364 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 385 selfloop transitions, 82 changer transitions 0/489 dead transitions. [2024-06-28 01:41:31,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 489 transitions, 8207 flow [2024-06-28 01:41:31,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-28 01:41:31,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:41:31,365 INFO L175 Difference]: Start difference. First operand has 258 places, 431 transitions, 6473 flow. Second operand 9 states and 198 transitions. [2024-06-28 01:41:31,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 489 transitions, 8207 flow [2024-06-28 01:41:32,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 489 transitions, 7995 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:32,946 INFO L231 Difference]: Finished difference. Result has 264 places, 461 transitions, 7178 flow [2024-06-28 01:41:32,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6295, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7178, PETRI_PLACES=264, PETRI_TRANSITIONS=461} [2024-06-28 01:41:32,946 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 210 predicate places. [2024-06-28 01:41:32,946 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 461 transitions, 7178 flow [2024-06-28 01:41:32,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:32,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:32,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:32,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:41:32,947 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:32,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:32,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1521368430, now seen corresponding path program 4 times [2024-06-28 01:41:32,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:32,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654171241] [2024-06-28 01:41:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:32,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:33,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:33,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654171241] [2024-06-28 01:41:33,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654171241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:33,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:33,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:33,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921876764] [2024-06-28 01:41:33,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:33,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:33,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:33,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:33,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:33,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:41:33,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 461 transitions, 7178 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:33,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:33,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:41:33,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:35,823 INFO L124 PetriNetUnfolderBase]: 7518/11856 cut-off events. [2024-06-28 01:41:35,823 INFO L125 PetriNetUnfolderBase]: For 566267/566510 co-relation queries the response was YES. [2024-06-28 01:41:35,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89507 conditions, 11856 events. 7518/11856 cut-off events. For 566267/566510 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 76494 event pairs, 2105 based on Foata normal form. 22/11532 useless extension candidates. Maximal degree in co-relation 89383. Up to 10279 conditions per place. [2024-06-28 01:41:35,970 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 386 selfloop transitions, 82 changer transitions 0/490 dead transitions. [2024-06-28 01:41:35,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 490 transitions, 8278 flow [2024-06-28 01:41:35,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:35,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:35,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-28 01:41:35,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-28 01:41:35,972 INFO L175 Difference]: Start difference. First operand has 264 places, 461 transitions, 7178 flow. Second operand 8 states and 178 transitions. [2024-06-28 01:41:35,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 490 transitions, 8278 flow [2024-06-28 01:41:37,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 490 transitions, 8143 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:37,894 INFO L231 Difference]: Finished difference. Result has 270 places, 461 transitions, 7223 flow [2024-06-28 01:41:37,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7047, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7223, PETRI_PLACES=270, PETRI_TRANSITIONS=461} [2024-06-28 01:41:37,895 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 216 predicate places. [2024-06-28 01:41:37,895 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 461 transitions, 7223 flow [2024-06-28 01:41:37,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:37,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:37,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:37,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:41:37,896 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:37,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2129439818, now seen corresponding path program 5 times [2024-06-28 01:41:37,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:37,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130096741] [2024-06-28 01:41:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:37,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:38,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:38,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130096741] [2024-06-28 01:41:38,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130096741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:38,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:38,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:38,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172949167] [2024-06-28 01:41:38,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:38,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:38,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:38,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:38,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:38,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:41:38,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 461 transitions, 7223 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:38,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:38,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:41:38,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:40,784 INFO L124 PetriNetUnfolderBase]: 7538/11886 cut-off events. [2024-06-28 01:41:40,784 INFO L125 PetriNetUnfolderBase]: For 580882/581125 co-relation queries the response was YES. [2024-06-28 01:41:40,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89928 conditions, 11886 events. 7538/11886 cut-off events. For 580882/581125 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 76764 event pairs, 2094 based on Foata normal form. 22/11561 useless extension candidates. Maximal degree in co-relation 89802. Up to 10223 conditions per place. [2024-06-28 01:41:40,933 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 381 selfloop transitions, 90 changer transitions 0/493 dead transitions. [2024-06-28 01:41:40,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 493 transitions, 8421 flow [2024-06-28 01:41:40,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 01:41:40,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-28 01:41:40,935 INFO L175 Difference]: Start difference. First operand has 270 places, 461 transitions, 7223 flow. Second operand 7 states and 164 transitions. [2024-06-28 01:41:40,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 493 transitions, 8421 flow [2024-06-28 01:41:42,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 493 transitions, 8084 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 01:41:42,365 INFO L231 Difference]: Finished difference. Result has 267 places, 464 transitions, 7139 flow [2024-06-28 01:41:42,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6886, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7139, PETRI_PLACES=267, PETRI_TRANSITIONS=464} [2024-06-28 01:41:42,365 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 213 predicate places. [2024-06-28 01:41:42,366 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 464 transitions, 7139 flow [2024-06-28 01:41:42,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:42,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:42,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:42,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:41:42,366 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:42,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:42,367 INFO L85 PathProgramCache]: Analyzing trace with hash -180816378, now seen corresponding path program 6 times [2024-06-28 01:41:42,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:42,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868806891] [2024-06-28 01:41:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:42,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:42,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:42,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868806891] [2024-06-28 01:41:42,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868806891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:42,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:42,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:42,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152799155] [2024-06-28 01:41:42,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:42,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:42,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:42,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:43,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:41:43,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 464 transitions, 7139 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:43,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:43,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:41:43,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:45,307 INFO L124 PetriNetUnfolderBase]: 7582/11930 cut-off events. [2024-06-28 01:41:45,307 INFO L125 PetriNetUnfolderBase]: For 578807/579033 co-relation queries the response was YES. [2024-06-28 01:41:45,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90018 conditions, 11930 events. 7582/11930 cut-off events. For 578807/579033 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 76926 event pairs, 2083 based on Foata normal form. 23/11611 useless extension candidates. Maximal degree in co-relation 89892. Up to 9990 conditions per place. [2024-06-28 01:41:45,470 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 368 selfloop transitions, 109 changer transitions 0/499 dead transitions. [2024-06-28 01:41:45,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 499 transitions, 8525 flow [2024-06-28 01:41:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:45,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:45,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:41:45,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-28 01:41:45,471 INFO L175 Difference]: Start difference. First operand has 267 places, 464 transitions, 7139 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:41:45,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 499 transitions, 8525 flow [2024-06-28 01:41:47,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 499 transitions, 8314 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:47,107 INFO L231 Difference]: Finished difference. Result has 269 places, 467 transitions, 7219 flow [2024-06-28 01:41:47,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6928, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7219, PETRI_PLACES=269, PETRI_TRANSITIONS=467} [2024-06-28 01:41:47,108 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 215 predicate places. [2024-06-28 01:41:47,108 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 467 transitions, 7219 flow [2024-06-28 01:41:47,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:47,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:47,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:47,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:41:47,109 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:47,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:47,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1124638936, now seen corresponding path program 7 times [2024-06-28 01:41:47,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:47,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667504195] [2024-06-28 01:41:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:47,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:47,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:47,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667504195] [2024-06-28 01:41:47,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667504195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:47,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:47,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:47,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226977961] [2024-06-28 01:41:47,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:47,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:47,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:47,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:41:47,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 467 transitions, 7219 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:47,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:47,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:41:47,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:50,271 INFO L124 PetriNetUnfolderBase]: 7574/11922 cut-off events. [2024-06-28 01:41:50,272 INFO L125 PetriNetUnfolderBase]: For 588819/589045 co-relation queries the response was YES. [2024-06-28 01:41:50,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90116 conditions, 11922 events. 7574/11922 cut-off events. For 588819/589045 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 76985 event pairs, 2085 based on Foata normal form. 24/11602 useless extension candidates. Maximal degree in co-relation 89989. Up to 9982 conditions per place. [2024-06-28 01:41:50,421 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 369 selfloop transitions, 107 changer transitions 0/498 dead transitions. [2024-06-28 01:41:50,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 498 transitions, 8417 flow [2024-06-28 01:41:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 01:41:50,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 01:41:50,423 INFO L175 Difference]: Start difference. First operand has 269 places, 467 transitions, 7219 flow. Second operand 8 states and 180 transitions. [2024-06-28 01:41:50,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 498 transitions, 8417 flow [2024-06-28 01:41:51,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 498 transitions, 8141 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:51,853 INFO L231 Difference]: Finished difference. Result has 273 places, 467 transitions, 7165 flow [2024-06-28 01:41:51,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6943, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7165, PETRI_PLACES=273, PETRI_TRANSITIONS=467} [2024-06-28 01:41:51,854 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 219 predicate places. [2024-06-28 01:41:51,854 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 467 transitions, 7165 flow [2024-06-28 01:41:51,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:51,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:51,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:51,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:41:51,855 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:51,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:51,855 INFO L85 PathProgramCache]: Analyzing trace with hash 793198576, now seen corresponding path program 4 times [2024-06-28 01:41:51,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:51,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244875091] [2024-06-28 01:41:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:51,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:52,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:52,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244875091] [2024-06-28 01:41:52,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244875091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:52,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:52,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641448610] [2024-06-28 01:41:52,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:52,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:52,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:52,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:41:52,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 467 transitions, 7165 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:52,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:52,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:41:52,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:55,316 INFO L124 PetriNetUnfolderBase]: 7872/12239 cut-off events. [2024-06-28 01:41:55,316 INFO L125 PetriNetUnfolderBase]: For 602589/602601 co-relation queries the response was YES. [2024-06-28 01:41:55,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92571 conditions, 12239 events. 7872/12239 cut-off events. For 602589/602601 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 77515 event pairs, 2197 based on Foata normal form. 10/11964 useless extension candidates. Maximal degree in co-relation 92443. Up to 10080 conditions per place. [2024-06-28 01:41:55,444 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 376 selfloop transitions, 135 changer transitions 0/519 dead transitions. [2024-06-28 01:41:55,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 519 transitions, 9059 flow [2024-06-28 01:41:55,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 01:41:55,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:41:55,446 INFO L175 Difference]: Start difference. First operand has 273 places, 467 transitions, 7165 flow. Second operand 8 states and 184 transitions. [2024-06-28 01:41:55,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 519 transitions, 9059 flow [2024-06-28 01:41:56,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 519 transitions, 8809 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:41:56,878 INFO L231 Difference]: Finished difference. Result has 274 places, 478 transitions, 7468 flow [2024-06-28 01:41:56,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6915, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7468, PETRI_PLACES=274, PETRI_TRANSITIONS=478} [2024-06-28 01:41:56,879 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 220 predicate places. [2024-06-28 01:41:56,879 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 478 transitions, 7468 flow [2024-06-28 01:41:56,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:56,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:56,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:56,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:41:56,879 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:56,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash 793199010, now seen corresponding path program 2 times [2024-06-28 01:41:56,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:56,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91647784] [2024-06-28 01:41:56,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:56,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:57,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:57,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91647784] [2024-06-28 01:41:57,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91647784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:57,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:57,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:57,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728885239] [2024-06-28 01:41:57,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:57,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:57,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:57,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:57,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:57,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:41:57,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 478 transitions, 7468 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:57,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:57,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:41:57,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:00,003 INFO L124 PetriNetUnfolderBase]: 7923/12373 cut-off events. [2024-06-28 01:42:00,003 INFO L125 PetriNetUnfolderBase]: For 635815/635833 co-relation queries the response was YES. [2024-06-28 01:42:00,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95655 conditions, 12373 events. 7923/12373 cut-off events. For 635815/635833 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 78885 event pairs, 2241 based on Foata normal form. 13/12097 useless extension candidates. Maximal degree in co-relation 95525. Up to 11053 conditions per place. [2024-06-28 01:42:00,177 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 455 selfloop transitions, 61 changer transitions 0/524 dead transitions. [2024-06-28 01:42:00,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 524 transitions, 9257 flow [2024-06-28 01:42:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 01:42:00,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-28 01:42:00,178 INFO L175 Difference]: Start difference. First operand has 274 places, 478 transitions, 7468 flow. Second operand 8 states and 177 transitions. [2024-06-28 01:42:00,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 524 transitions, 9257 flow [2024-06-28 01:42:02,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 524 transitions, 9002 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:02,157 INFO L231 Difference]: Finished difference. Result has 280 places, 489 transitions, 7631 flow [2024-06-28 01:42:02,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7213, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7631, PETRI_PLACES=280, PETRI_TRANSITIONS=489} [2024-06-28 01:42:02,158 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 226 predicate places. [2024-06-28 01:42:02,158 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 489 transitions, 7631 flow [2024-06-28 01:42:02,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:02,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:02,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:02,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:42:02,158 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:02,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:02,159 INFO L85 PathProgramCache]: Analyzing trace with hash 779376916, now seen corresponding path program 5 times [2024-06-28 01:42:02,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:02,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214836721] [2024-06-28 01:42:02,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:02,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:02,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:02,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214836721] [2024-06-28 01:42:02,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214836721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:02,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:02,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:02,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085599676] [2024-06-28 01:42:02,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:02,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:02,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:02,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:02,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:03,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:42:03,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 489 transitions, 7631 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:03,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:03,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:42:03,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:05,579 INFO L124 PetriNetUnfolderBase]: 7986/12412 cut-off events. [2024-06-28 01:42:05,579 INFO L125 PetriNetUnfolderBase]: For 652219/652231 co-relation queries the response was YES. [2024-06-28 01:42:05,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96328 conditions, 12412 events. 7986/12412 cut-off events. For 652219/652231 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 78649 event pairs, 2226 based on Foata normal form. 10/12137 useless extension candidates. Maximal degree in co-relation 96195. Up to 10208 conditions per place. [2024-06-28 01:42:05,731 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 393 selfloop transitions, 137 changer transitions 0/538 dead transitions. [2024-06-28 01:42:05,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 538 transitions, 9605 flow [2024-06-28 01:42:05,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:05,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:05,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:42:05,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 01:42:05,733 INFO L175 Difference]: Start difference. First operand has 280 places, 489 transitions, 7631 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:42:05,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 538 transitions, 9605 flow [2024-06-28 01:42:07,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 538 transitions, 9474 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:07,284 INFO L231 Difference]: Finished difference. Result has 286 places, 498 transitions, 8053 flow [2024-06-28 01:42:07,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7500, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8053, PETRI_PLACES=286, PETRI_TRANSITIONS=498} [2024-06-28 01:42:07,285 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 232 predicate places. [2024-06-28 01:42:07,285 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 498 transitions, 8053 flow [2024-06-28 01:42:07,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:07,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:07,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:07,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:42:07,286 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:07,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:07,286 INFO L85 PathProgramCache]: Analyzing trace with hash 793674240, now seen corresponding path program 3 times [2024-06-28 01:42:07,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:07,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605787193] [2024-06-28 01:42:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:07,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:08,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605787193] [2024-06-28 01:42:08,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605787193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:08,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:08,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:08,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625629087] [2024-06-28 01:42:08,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:08,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:08,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:08,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:08,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:08,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:42:08,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 498 transitions, 8053 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:08,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:08,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:42:08,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:10,525 INFO L124 PetriNetUnfolderBase]: 7983/12467 cut-off events. [2024-06-28 01:42:10,525 INFO L125 PetriNetUnfolderBase]: For 669322/669340 co-relation queries the response was YES. [2024-06-28 01:42:10,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97981 conditions, 12467 events. 7983/12467 cut-off events. For 669322/669340 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 79540 event pairs, 2243 based on Foata normal form. 13/12190 useless extension candidates. Maximal degree in co-relation 97845. Up to 11135 conditions per place. [2024-06-28 01:42:10,699 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 459 selfloop transitions, 65 changer transitions 0/532 dead transitions. [2024-06-28 01:42:10,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 532 transitions, 9480 flow [2024-06-28 01:42:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-28 01:42:10,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557291666666667 [2024-06-28 01:42:10,700 INFO L175 Difference]: Start difference. First operand has 286 places, 498 transitions, 8053 flow. Second operand 8 states and 175 transitions. [2024-06-28 01:42:10,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 532 transitions, 9480 flow [2024-06-28 01:42:12,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 532 transitions, 9126 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:12,569 INFO L231 Difference]: Finished difference. Result has 290 places, 498 transitions, 7835 flow [2024-06-28 01:42:12,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7699, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7835, PETRI_PLACES=290, PETRI_TRANSITIONS=498} [2024-06-28 01:42:12,570 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 236 predicate places. [2024-06-28 01:42:12,570 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 498 transitions, 7835 flow [2024-06-28 01:42:12,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:12,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:12,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:12,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:42:12,570 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:12,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:12,571 INFO L85 PathProgramCache]: Analyzing trace with hash -186521370, now seen corresponding path program 4 times [2024-06-28 01:42:12,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:12,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619544098] [2024-06-28 01:42:12,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:12,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:13,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:13,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619544098] [2024-06-28 01:42:13,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619544098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:13,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:13,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:13,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114150510] [2024-06-28 01:42:13,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:13,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:13,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:13,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:13,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:13,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:42:13,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 498 transitions, 7835 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:13,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:13,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:42:13,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:15,818 INFO L124 PetriNetUnfolderBase]: 7980/12463 cut-off events. [2024-06-28 01:42:15,818 INFO L125 PetriNetUnfolderBase]: For 666091/666109 co-relation queries the response was YES. [2024-06-28 01:42:15,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96829 conditions, 12463 events. 7980/12463 cut-off events. For 666091/666109 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 79522 event pairs, 2256 based on Foata normal form. 13/12186 useless extension candidates. Maximal degree in co-relation 96692. Up to 11132 conditions per place. [2024-06-28 01:42:15,977 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 465 selfloop transitions, 59 changer transitions 0/532 dead transitions. [2024-06-28 01:42:15,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 532 transitions, 9141 flow [2024-06-28 01:42:15,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:15,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:15,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 01:42:15,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:42:15,979 INFO L175 Difference]: Start difference. First operand has 290 places, 498 transitions, 7835 flow. Second operand 8 states and 176 transitions. [2024-06-28 01:42:15,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 532 transitions, 9141 flow [2024-06-28 01:42:17,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 532 transitions, 8969 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:17,798 INFO L231 Difference]: Finished difference. Result has 292 places, 499 transitions, 7796 flow [2024-06-28 01:42:17,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7664, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7796, PETRI_PLACES=292, PETRI_TRANSITIONS=499} [2024-06-28 01:42:17,798 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 238 predicate places. [2024-06-28 01:42:17,799 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 499 transitions, 7796 flow [2024-06-28 01:42:17,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:17,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:17,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:17,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:42:17,799 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:17,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash -186521804, now seen corresponding path program 6 times [2024-06-28 01:42:17,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:17,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5483324] [2024-06-28 01:42:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:17,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:18,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:18,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5483324] [2024-06-28 01:42:18,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5483324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:18,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:18,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:18,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721385522] [2024-06-28 01:42:18,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:18,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:18,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:18,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:18,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:18,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:42:18,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 499 transitions, 7796 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:18,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:18,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:42:18,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:21,148 INFO L124 PetriNetUnfolderBase]: 7976/12393 cut-off events. [2024-06-28 01:42:21,148 INFO L125 PetriNetUnfolderBase]: For 678932/678944 co-relation queries the response was YES. [2024-06-28 01:42:21,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96613 conditions, 12393 events. 7976/12393 cut-off events. For 678932/678944 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 78441 event pairs, 2224 based on Foata normal form. 10/12119 useless extension candidates. Maximal degree in co-relation 96475. Up to 10198 conditions per place. [2024-06-28 01:42:21,298 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 399 selfloop transitions, 132 changer transitions 0/539 dead transitions. [2024-06-28 01:42:21,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 539 transitions, 9556 flow [2024-06-28 01:42:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:21,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:42:21,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 01:42:21,299 INFO L175 Difference]: Start difference. First operand has 292 places, 499 transitions, 7796 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:42:21,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 539 transitions, 9556 flow [2024-06-28 01:42:22,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 539 transitions, 9400 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:22,950 INFO L231 Difference]: Finished difference. Result has 295 places, 499 transitions, 7912 flow [2024-06-28 01:42:22,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7640, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7912, PETRI_PLACES=295, PETRI_TRANSITIONS=499} [2024-06-28 01:42:22,950 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 241 predicate places. [2024-06-28 01:42:22,951 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 499 transitions, 7912 flow [2024-06-28 01:42:22,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:22,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:22,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:22,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:42:22,951 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:22,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:22,952 INFO L85 PathProgramCache]: Analyzing trace with hash -988164064, now seen corresponding path program 1 times [2024-06-28 01:42:22,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:22,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555958015] [2024-06-28 01:42:22,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:22,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:23,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:23,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555958015] [2024-06-28 01:42:23,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555958015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:23,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:23,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147177709] [2024-06-28 01:42:23,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:23,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:23,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:23,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:23,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:42:23,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 499 transitions, 7912 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:23,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:23,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:42:23,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:26,442 INFO L124 PetriNetUnfolderBase]: 7384/11805 cut-off events. [2024-06-28 01:42:26,442 INFO L125 PetriNetUnfolderBase]: For 688989/689332 co-relation queries the response was YES. [2024-06-28 01:42:26,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93403 conditions, 11805 events. 7384/11805 cut-off events. For 688989/689332 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 77887 event pairs, 2047 based on Foata normal form. 17/11427 useless extension candidates. Maximal degree in co-relation 93264. Up to 10195 conditions per place. [2024-06-28 01:42:26,608 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 461 selfloop transitions, 41 changer transitions 0/535 dead transitions. [2024-06-28 01:42:26,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 535 transitions, 9190 flow [2024-06-28 01:42:26,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:26,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:42:26,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-28 01:42:26,610 INFO L175 Difference]: Start difference. First operand has 295 places, 499 transitions, 7912 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:42:26,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 535 transitions, 9190 flow [2024-06-28 01:42:28,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 535 transitions, 8695 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-28 01:42:28,814 INFO L231 Difference]: Finished difference. Result has 294 places, 508 transitions, 7693 flow [2024-06-28 01:42:28,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7455, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7693, PETRI_PLACES=294, PETRI_TRANSITIONS=508} [2024-06-28 01:42:28,815 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 240 predicate places. [2024-06-28 01:42:28,815 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 508 transitions, 7693 flow [2024-06-28 01:42:28,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:28,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:28,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:28,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:42:28,816 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:28,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:28,816 INFO L85 PathProgramCache]: Analyzing trace with hash -443354530, now seen corresponding path program 1 times [2024-06-28 01:42:28,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:28,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320190589] [2024-06-28 01:42:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:28,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:29,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:29,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320190589] [2024-06-28 01:42:29,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320190589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:29,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:29,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:29,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832714983] [2024-06-28 01:42:29,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:29,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:29,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:29,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:29,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:29,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:42:29,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 508 transitions, 7693 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:29,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:29,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:42:29,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:31,985 INFO L124 PetriNetUnfolderBase]: 7692/12141 cut-off events. [2024-06-28 01:42:31,986 INFO L125 PetriNetUnfolderBase]: For 695644/695678 co-relation queries the response was YES. [2024-06-28 01:42:32,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94561 conditions, 12141 events. 7692/12141 cut-off events. For 695644/695678 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 78733 event pairs, 2264 based on Foata normal form. 2/11851 useless extension candidates. Maximal degree in co-relation 94422. Up to 10803 conditions per place. [2024-06-28 01:42:32,162 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 489 selfloop transitions, 42 changer transitions 0/545 dead transitions. [2024-06-28 01:42:32,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 545 transitions, 8989 flow [2024-06-28 01:42:32,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:32,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-06-28 01:42:32,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45601851851851855 [2024-06-28 01:42:32,164 INFO L175 Difference]: Start difference. First operand has 294 places, 508 transitions, 7693 flow. Second operand 9 states and 197 transitions. [2024-06-28 01:42:32,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 545 transitions, 8989 flow [2024-06-28 01:42:34,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 545 transitions, 8917 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:34,505 INFO L231 Difference]: Finished difference. Result has 300 places, 512 transitions, 7802 flow [2024-06-28 01:42:34,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7621, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7802, PETRI_PLACES=300, PETRI_TRANSITIONS=512} [2024-06-28 01:42:34,506 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 246 predicate places. [2024-06-28 01:42:34,506 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 512 transitions, 7802 flow [2024-06-28 01:42:34,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:34,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:34,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:34,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:42:34,507 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:34,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:34,507 INFO L85 PathProgramCache]: Analyzing trace with hash -439600120, now seen corresponding path program 2 times [2024-06-28 01:42:34,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:34,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822667422] [2024-06-28 01:42:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:34,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:35,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:35,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822667422] [2024-06-28 01:42:35,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822667422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:35,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:35,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:35,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239988302] [2024-06-28 01:42:35,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:35,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:35,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:35,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:35,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:42:35,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 512 transitions, 7802 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:35,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:35,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:42:35,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:37,878 INFO L124 PetriNetUnfolderBase]: 7761/12230 cut-off events. [2024-06-28 01:42:37,879 INFO L125 PetriNetUnfolderBase]: For 724090/724124 co-relation queries the response was YES. [2024-06-28 01:42:37,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96935 conditions, 12230 events. 7761/12230 cut-off events. For 724090/724124 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 79209 event pairs, 2260 based on Foata normal form. 2/11941 useless extension candidates. Maximal degree in co-relation 96795. Up to 10789 conditions per place. [2024-06-28 01:42:38,052 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 481 selfloop transitions, 62 changer transitions 0/557 dead transitions. [2024-06-28 01:42:38,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 557 transitions, 9426 flow [2024-06-28 01:42:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:38,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:38,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:42:38,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-28 01:42:38,054 INFO L175 Difference]: Start difference. First operand has 300 places, 512 transitions, 7802 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:42:38,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 557 transitions, 9426 flow [2024-06-28 01:42:39,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 557 transitions, 9273 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:39,764 INFO L231 Difference]: Finished difference. Result has 302 places, 524 transitions, 8052 flow [2024-06-28 01:42:39,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7649, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8052, PETRI_PLACES=302, PETRI_TRANSITIONS=524} [2024-06-28 01:42:39,765 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 248 predicate places. [2024-06-28 01:42:39,765 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 524 transitions, 8052 flow [2024-06-28 01:42:39,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:39,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:39,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:39,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:42:39,765 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:39,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash -439599872, now seen corresponding path program 1 times [2024-06-28 01:42:39,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:39,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76282421] [2024-06-28 01:42:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:39,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:40,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:40,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76282421] [2024-06-28 01:42:40,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76282421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:40,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:40,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:40,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989420858] [2024-06-28 01:42:40,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:40,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:40,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:40,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:40,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:40,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:42:40,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 524 transitions, 8052 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:40,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:40,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:42:40,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:43,188 INFO L124 PetriNetUnfolderBase]: 7772/12255 cut-off events. [2024-06-28 01:42:43,188 INFO L125 PetriNetUnfolderBase]: For 750388/750422 co-relation queries the response was YES. [2024-06-28 01:42:43,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98621 conditions, 12255 events. 7772/12255 cut-off events. For 750388/750422 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 79496 event pairs, 2227 based on Foata normal form. 2/11965 useless extension candidates. Maximal degree in co-relation 98479. Up to 10951 conditions per place. [2024-06-28 01:42:43,351 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 515 selfloop transitions, 31 changer transitions 0/560 dead transitions. [2024-06-28 01:42:43,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 560 transitions, 9429 flow [2024-06-28 01:42:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-28 01:42:43,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44212962962962965 [2024-06-28 01:42:43,352 INFO L175 Difference]: Start difference. First operand has 302 places, 524 transitions, 8052 flow. Second operand 9 states and 191 transitions. [2024-06-28 01:42:43,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 560 transitions, 9429 flow [2024-06-28 01:42:45,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 560 transitions, 9253 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:45,142 INFO L231 Difference]: Finished difference. Result has 307 places, 527 transitions, 8030 flow [2024-06-28 01:42:45,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7885, PETRI_DIFFERENCE_MINUEND_PLACES=298, 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=9, PETRI_FLOW=8030, PETRI_PLACES=307, PETRI_TRANSITIONS=527} [2024-06-28 01:42:45,143 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 253 predicate places. [2024-06-28 01:42:45,143 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 527 transitions, 8030 flow [2024-06-28 01:42:45,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:45,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:45,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:45,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:42:45,143 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:45,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:45,144 INFO L85 PathProgramCache]: Analyzing trace with hash -439606630, now seen corresponding path program 3 times [2024-06-28 01:42:45,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:45,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947092010] [2024-06-28 01:42:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:45,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:45,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:45,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947092010] [2024-06-28 01:42:45,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947092010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:45,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:45,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:45,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017928199] [2024-06-28 01:42:45,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:45,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:45,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:45,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:45,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:46,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:42:46,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 527 transitions, 8030 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:46,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:46,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:42:46,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:49,264 INFO L124 PetriNetUnfolderBase]: 7764/12222 cut-off events. [2024-06-28 01:42:49,264 INFO L125 PetriNetUnfolderBase]: For 763579/763613 co-relation queries the response was YES. [2024-06-28 01:42:49,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99177 conditions, 12222 events. 7764/12222 cut-off events. For 763579/763613 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 78943 event pairs, 2255 based on Foata normal form. 2/11939 useless extension candidates. Maximal degree in co-relation 99033. Up to 10788 conditions per place. [2024-06-28 01:42:49,412 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 486 selfloop transitions, 64 changer transitions 0/564 dead transitions. [2024-06-28 01:42:49,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 564 transitions, 9516 flow [2024-06-28 01:42:49,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:49,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:42:49,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 01:42:49,414 INFO L175 Difference]: Start difference. First operand has 307 places, 527 transitions, 8030 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:42:49,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 564 transitions, 9516 flow [2024-06-28 01:42:51,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 564 transitions, 9396 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 01:42:51,956 INFO L231 Difference]: Finished difference. Result has 307 places, 531 transitions, 8127 flow [2024-06-28 01:42:51,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7910, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8127, PETRI_PLACES=307, PETRI_TRANSITIONS=531} [2024-06-28 01:42:51,957 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 253 predicate places. [2024-06-28 01:42:51,957 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 531 transitions, 8127 flow [2024-06-28 01:42:51,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:51,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:51,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:51,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:42:51,957 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:51,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:51,958 INFO L85 PathProgramCache]: Analyzing trace with hash -180808256, now seen corresponding path program 4 times [2024-06-28 01:42:51,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:51,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56329998] [2024-06-28 01:42:51,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:51,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:52,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:52,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56329998] [2024-06-28 01:42:52,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56329998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:52,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:52,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:52,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975786748] [2024-06-28 01:42:52,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:52,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:52,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:52,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:42:52,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 531 transitions, 8127 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:52,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:52,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:42:52,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:56,038 INFO L124 PetriNetUnfolderBase]: 7826/12367 cut-off events. [2024-06-28 01:42:56,038 INFO L125 PetriNetUnfolderBase]: For 789498/789549 co-relation queries the response was YES. [2024-06-28 01:42:56,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100398 conditions, 12367 events. 7826/12367 cut-off events. For 789498/789549 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 80574 event pairs, 2242 based on Foata normal form. 2/12052 useless extension candidates. Maximal degree in co-relation 100253. Up to 10761 conditions per place. [2024-06-28 01:42:56,193 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 477 selfloop transitions, 97 changer transitions 0/588 dead transitions. [2024-06-28 01:42:56,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 588 transitions, 10272 flow [2024-06-28 01:42:56,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-06-28 01:42:56,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:42:56,195 INFO L175 Difference]: Start difference. First operand has 307 places, 531 transitions, 8127 flow. Second operand 9 states and 200 transitions. [2024-06-28 01:42:56,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 588 transitions, 10272 flow [2024-06-28 01:42:58,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 588 transitions, 10117 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:58,311 INFO L231 Difference]: Finished difference. Result has 313 places, 556 transitions, 8814 flow [2024-06-28 01:42:58,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7972, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8814, PETRI_PLACES=313, PETRI_TRANSITIONS=556} [2024-06-28 01:42:58,311 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 259 predicate places. [2024-06-28 01:42:58,319 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 556 transitions, 8814 flow [2024-06-28 01:42:58,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:58,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:58,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:58,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:42:58,320 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:58,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:58,320 INFO L85 PathProgramCache]: Analyzing trace with hash -180801746, now seen corresponding path program 5 times [2024-06-28 01:42:58,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:58,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933503015] [2024-06-28 01:42:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:58,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:59,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:59,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:59,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933503015] [2024-06-28 01:42:59,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933503015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:59,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:59,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:59,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035691461] [2024-06-28 01:42:59,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:59,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:59,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:59,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:59,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:59,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:42:59,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 556 transitions, 8814 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:59,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:59,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:42:59,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:02,281 INFO L124 PetriNetUnfolderBase]: 7859/12408 cut-off events. [2024-06-28 01:43:02,281 INFO L125 PetriNetUnfolderBase]: For 824936/824987 co-relation queries the response was YES. [2024-06-28 01:43:02,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102887 conditions, 12408 events. 7859/12408 cut-off events. For 824936/824987 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 80718 event pairs, 2243 based on Foata normal form. 2/12094 useless extension candidates. Maximal degree in co-relation 102739. Up to 10791 conditions per place. [2024-06-28 01:43:02,569 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 480 selfloop transitions, 103 changer transitions 0/597 dead transitions. [2024-06-28 01:43:02,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 597 transitions, 10682 flow [2024-06-28 01:43:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:02,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-28 01:43:02,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2024-06-28 01:43:02,571 INFO L175 Difference]: Start difference. First operand has 313 places, 556 transitions, 8814 flow. Second operand 9 states and 202 transitions. [2024-06-28 01:43:02,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 597 transitions, 10682 flow [2024-06-28 01:43:05,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 597 transitions, 10307 flow, removed 173 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:05,358 INFO L231 Difference]: Finished difference. Result has 320 places, 564 transitions, 8907 flow [2024-06-28 01:43:05,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8557, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8907, PETRI_PLACES=320, PETRI_TRANSITIONS=564} [2024-06-28 01:43:05,358 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 266 predicate places. [2024-06-28 01:43:05,359 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 564 transitions, 8907 flow [2024-06-28 01:43:05,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:05,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:05,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:05,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:43:05,359 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:05,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash 785109312, now seen corresponding path program 2 times [2024-06-28 01:43:05,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:05,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043867202] [2024-06-28 01:43:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:05,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:06,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:06,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043867202] [2024-06-28 01:43:06,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043867202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:06,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:06,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:06,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611479331] [2024-06-28 01:43:06,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:06,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:06,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:06,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:06,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:06,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:43:06,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 564 transitions, 8907 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:06,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:06,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:43:06,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:09,143 INFO L124 PetriNetUnfolderBase]: 7887/12450 cut-off events. [2024-06-28 01:43:09,143 INFO L125 PetriNetUnfolderBase]: For 839094/839157 co-relation queries the response was YES. [2024-06-28 01:43:09,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103419 conditions, 12450 events. 7887/12450 cut-off events. For 839094/839157 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 81084 event pairs, 2234 based on Foata normal form. 12/12146 useless extension candidates. Maximal degree in co-relation 103268. Up to 10994 conditions per place. [2024-06-28 01:43:09,450 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 536 selfloop transitions, 61 changer transitions 0/611 dead transitions. [2024-06-28 01:43:09,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 611 transitions, 10775 flow [2024-06-28 01:43:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:09,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-06-28 01:43:09,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45601851851851855 [2024-06-28 01:43:09,452 INFO L175 Difference]: Start difference. First operand has 320 places, 564 transitions, 8907 flow. Second operand 9 states and 197 transitions. [2024-06-28 01:43:09,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 611 transitions, 10775 flow [2024-06-28 01:43:11,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 611 transitions, 10512 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:11,788 INFO L231 Difference]: Finished difference. Result has 324 places, 570 transitions, 8952 flow [2024-06-28 01:43:11,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8657, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8952, PETRI_PLACES=324, PETRI_TRANSITIONS=570} [2024-06-28 01:43:11,789 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 270 predicate places. [2024-06-28 01:43:11,789 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 570 transitions, 8952 flow [2024-06-28 01:43:11,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:11,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:11,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:11,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:43:11,790 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:11,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:11,790 INFO L85 PathProgramCache]: Analyzing trace with hash 785348322, now seen corresponding path program 3 times [2024-06-28 01:43:11,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:11,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446039862] [2024-06-28 01:43:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:11,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:12,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:12,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446039862] [2024-06-28 01:43:12,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446039862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:12,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:12,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:12,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026903126] [2024-06-28 01:43:12,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:12,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:12,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:12,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:12,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:12,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:43:12,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 570 transitions, 8952 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:12,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:12,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:43:12,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:15,865 INFO L124 PetriNetUnfolderBase]: 7907/12487 cut-off events. [2024-06-28 01:43:15,865 INFO L125 PetriNetUnfolderBase]: For 861593/861656 co-relation queries the response was YES. [2024-06-28 01:43:15,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104390 conditions, 12487 events. 7907/12487 cut-off events. For 861593/861656 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 81463 event pairs, 2232 based on Foata normal form. 12/12182 useless extension candidates. Maximal degree in co-relation 104238. Up to 11015 conditions per place. [2024-06-28 01:43:16,028 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 529 selfloop transitions, 70 changer transitions 0/613 dead transitions. [2024-06-28 01:43:16,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 613 transitions, 10709 flow [2024-06-28 01:43:16,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:16,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:16,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 195 transitions. [2024-06-28 01:43:16,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2024-06-28 01:43:16,029 INFO L175 Difference]: Start difference. First operand has 324 places, 570 transitions, 8952 flow. Second operand 9 states and 195 transitions. [2024-06-28 01:43:16,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 613 transitions, 10709 flow [2024-06-28 01:43:18,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 613 transitions, 10581 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:18,722 INFO L231 Difference]: Finished difference. Result has 328 places, 573 transitions, 9057 flow [2024-06-28 01:43:18,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8832, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9057, PETRI_PLACES=328, PETRI_TRANSITIONS=573} [2024-06-28 01:43:18,737 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 274 predicate places. [2024-06-28 01:43:18,737 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 573 transitions, 9057 flow [2024-06-28 01:43:18,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:18,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:18,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:18,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:43:18,737 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:18,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash 793383522, now seen corresponding path program 4 times [2024-06-28 01:43:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:18,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490484519] [2024-06-28 01:43:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:18,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:19,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:19,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490484519] [2024-06-28 01:43:19,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490484519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:19,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:19,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:19,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670526296] [2024-06-28 01:43:19,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:19,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:19,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:19,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:19,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:43:19,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 573 transitions, 9057 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:19,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:19,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:43:19,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:22,827 INFO L124 PetriNetUnfolderBase]: 7950/12552 cut-off events. [2024-06-28 01:43:22,827 INFO L125 PetriNetUnfolderBase]: For 872005/872068 co-relation queries the response was YES. [2024-06-28 01:43:22,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105146 conditions, 12552 events. 7950/12552 cut-off events. For 872005/872068 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 81906 event pairs, 2237 based on Foata normal form. 12/12243 useless extension candidates. Maximal degree in co-relation 104992. Up to 11065 conditions per place. [2024-06-28 01:43:22,975 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 534 selfloop transitions, 65 changer transitions 0/613 dead transitions. [2024-06-28 01:43:22,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 613 transitions, 10606 flow [2024-06-28 01:43:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:22,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:43:22,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-06-28 01:43:22,977 INFO L175 Difference]: Start difference. First operand has 328 places, 573 transitions, 9057 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:43:22,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 613 transitions, 10606 flow [2024-06-28 01:43:25,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 613 transitions, 10389 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:25,366 INFO L231 Difference]: Finished difference. Result has 330 places, 573 transitions, 8977 flow [2024-06-28 01:43:25,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8840, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8977, PETRI_PLACES=330, PETRI_TRANSITIONS=573} [2024-06-28 01:43:25,367 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 276 predicate places. [2024-06-28 01:43:25,367 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 573 transitions, 8977 flow [2024-06-28 01:43:25,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:25,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:25,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:25,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:43:25,368 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:25,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:25,368 INFO L85 PathProgramCache]: Analyzing trace with hash 793383274, now seen corresponding path program 6 times [2024-06-28 01:43:25,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:25,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922039185] [2024-06-28 01:43:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:25,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:26,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:26,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922039185] [2024-06-28 01:43:26,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922039185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:26,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:26,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:26,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860545488] [2024-06-28 01:43:26,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:26,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:26,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:26,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:26,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:26,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:43:26,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 573 transitions, 8977 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:26,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:26,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:43:26,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand