./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 04:14:50,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:14:50,761 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:14:50,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:14:50,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:14:50,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:14:50,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:14:50,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:14:50,800 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:14:50,804 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:14:50,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:14:50,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:14:50,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:14:50,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:14:50,806 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:14:50,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:14:50,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:14:50,807 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:14:50,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:14:50,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:14:50,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:14:50,809 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:14:50,809 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:14:50,809 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:14:50,809 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:14:50,810 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:14:50,810 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:14:50,810 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:14:50,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:14:50,811 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:14:50,811 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:14:50,811 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:14:50,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:14:50,811 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:14:50,811 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:14:50,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:14:50,812 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:14:50,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:14:50,812 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:14:50,812 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:14:50,812 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:14:50,813 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:14:50,813 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:14:50,813 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:14:51,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:14:51,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:14:51,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:14:51,075 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:14:51,076 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:14:51,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 04:14:52,162 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:14:52,441 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:14:52,441 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 04:14:52,454 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5559150ce/c95a89078e8845d2bedea50dfa52bbe9/FLAGbf7376035 [2024-06-28 04:14:52,471 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5559150ce/c95a89078e8845d2bedea50dfa52bbe9 [2024-06-28 04:14:52,474 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:14:52,474 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:14:52,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 04:14:52,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:14:52,672 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:14:52,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:14:52,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:14:52,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:14:52,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:14:52" (1/2) ... [2024-06-28 04:14:52,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78e01f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:52, skipping insertion in model container [2024-06-28 04:14:52,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:14:52" (1/2) ... [2024-06-28 04:14:52,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d5b8ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:52, skipping insertion in model container [2024-06-28 04:14:52,687 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:14:52" (2/2) ... [2024-06-28 04:14:52,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78e01f46 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:52, skipping insertion in model container [2024-06-28 04:14:52,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:14:52" (2/2) ... [2024-06-28 04:14:52,689 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:14:52,772 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:14:52,774 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] (((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-28 04:14:52,775 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] (((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-28 04:14:52,775 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] (((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-28 04:14:52,775 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:14:52,775 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-06-28 04:14:52,820 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:14:53,191 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:14:53,199 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:14:53,318 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:14:53,362 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:14:53,363 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:14:53 WrapperNode [2024-06-28 04:14:53,363 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:14:53,364 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:14:53,364 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:14:53,364 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:14:53,371 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 04:14:53" (1/1) ... [2024-06-28 04:14:53,390 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 04:14:53" (1/1) ... [2024-06-28 04:14:53,440 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 142 [2024-06-28 04:14:53,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:14:53,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:14:53,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:14:53,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:14:53,454 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 04:14:53" (1/1) ... [2024-06-28 04:14:53,455 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 04:14:53" (1/1) ... [2024-06-28 04:14:53,473 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 04:14:53" (1/1) ... [2024-06-28 04:14:53,491 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 04:14:53,494 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 04:14:53" (1/1) ... [2024-06-28 04:14:53,494 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 04:14:53" (1/1) ... [2024-06-28 04:14:53,514 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 04:14:53" (1/1) ... [2024-06-28 04:14:53,522 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 04:14:53" (1/1) ... [2024-06-28 04:14:53,524 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 04:14:53" (1/1) ... [2024-06-28 04:14:53,531 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 04:14:53" (1/1) ... [2024-06-28 04:14:53,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:14:53,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:14:53,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:14:53,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:14:53,538 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 04:14:53" (1/1) ... [2024-06-28 04:14:53,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:14:53,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:14:53,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 04:14:53,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 04:14:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:14:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:14:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:14:53,639 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:14:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:14:53,639 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:14:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:14:53,640 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:14:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:14:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:14:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:14:53,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:14:53,642 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 04:14:53,790 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:14:53,792 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:14:54,127 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:14:54,127 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:14:54,308 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:14:54,309 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:14:54,310 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:14:54 BoogieIcfgContainer [2024-06-28 04:14:54,310 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:14:54,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:14:54,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:14:54,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:14:54,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:14:52" (1/4) ... [2024-06-28 04:14:54,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d639e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:14:54, skipping insertion in model container [2024-06-28 04:14:54,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:14:52" (2/4) ... [2024-06-28 04:14:54,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d639e80 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:14:54, skipping insertion in model container [2024-06-28 04:14:54,318 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 04:14:53" (3/4) ... [2024-06-28 04:14:54,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d639e80 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:14:54, skipping insertion in model container [2024-06-28 04:14:54,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:14:54" (4/4) ... [2024-06-28 04:14:54,320 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 04:14:54,335 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:14:54,336 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 04:14:54,336 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:14:54,384 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:14:54,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 39 transitions, 90 flow [2024-06-28 04:14:54,457 INFO L124 PetriNetUnfolderBase]: 0/36 cut-off events. [2024-06-28 04:14:54,457 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:14:54,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 0/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:14:54,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 39 transitions, 90 flow [2024-06-28 04:14:54,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 30 transitions, 69 flow [2024-06-28 04:14:54,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:14:54,485 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;@5808d04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:14:54,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 04:14:54,493 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:14:54,493 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 04:14:54,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:14:54,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:54,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:14:54,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:54,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:54,499 INFO L85 PathProgramCache]: Analyzing trace with hash 367068007, now seen corresponding path program 1 times [2024-06-28 04:14:54,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:54,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555361877] [2024-06-28 04:14:54,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:54,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:55,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:55,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555361877] [2024-06-28 04:14:55,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555361877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:55,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:55,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:14:55,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540294141] [2024-06-28 04:14:55,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:55,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:14:55,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:55,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:14:55,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:14:55,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 04:14:55,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:55,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:55,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 04:14:55,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:55,891 INFO L124 PetriNetUnfolderBase]: 1156/1753 cut-off events. [2024-06-28 04:14:55,892 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-28 04:14:55,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3580 conditions, 1753 events. 1156/1753 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7857 event pairs, 805 based on Foata normal form. 1/1716 useless extension candidates. Maximal degree in co-relation 3568. Up to 1740 conditions per place. [2024-06-28 04:14:55,906 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 31 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-06-28 04:14:55,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 165 flow [2024-06-28 04:14:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:14:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:14:55,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-06-28 04:14:55,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-06-28 04:14:55,920 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 69 flow. Second operand 3 states and 68 transitions. [2024-06-28 04:14:55,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 165 flow [2024-06-28 04:14:55,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 04:14:55,925 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 96 flow [2024-06-28 04:14:55,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-06-28 04:14:55,929 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-06-28 04:14:55,930 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 96 flow [2024-06-28 04:14:55,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:55,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:55,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:55,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:14:55,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:55,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:55,931 INFO L85 PathProgramCache]: Analyzing trace with hash 565078598, now seen corresponding path program 1 times [2024-06-28 04:14:55,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:55,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663049919] [2024-06-28 04:14:55,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:55,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:56,519 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 04:14:56,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:56,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663049919] [2024-06-28 04:14:56,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663049919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:56,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:56,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 04:14:56,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074526607] [2024-06-28 04:14:56,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:56,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 04:14:56,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:56,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 04:14:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 04:14:56,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 04:14:56,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:56,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:56,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 04:14:56,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:56,853 INFO L124 PetriNetUnfolderBase]: 1150/1744 cut-off events. [2024-06-28 04:14:56,854 INFO L125 PetriNetUnfolderBase]: For 338/346 co-relation queries the response was YES. [2024-06-28 04:14:56,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4051 conditions, 1744 events. 1150/1744 cut-off events. For 338/346 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7706 event pairs, 699 based on Foata normal form. 6/1747 useless extension candidates. Maximal degree in co-relation 4039. Up to 1716 conditions per place. [2024-06-28 04:14:56,866 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 38 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2024-06-28 04:14:56,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 232 flow [2024-06-28 04:14:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:14:56,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:14:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-06-28 04:14:56,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-06-28 04:14:56,870 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 96 flow. Second operand 4 states and 88 transitions. [2024-06-28 04:14:56,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 232 flow [2024-06-28 04:14:56,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:14:56,874 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 132 flow [2024-06-28 04:14:56,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-28 04:14:56,875 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-06-28 04:14:56,875 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 132 flow [2024-06-28 04:14:56,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:56,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:56,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:56,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:14:56,879 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:56,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash 337568732, now seen corresponding path program 1 times [2024-06-28 04:14:56,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:56,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442214788] [2024-06-28 04:14:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:56,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:57,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:57,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442214788] [2024-06-28 04:14:57,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442214788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:57,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:57,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 04:14:57,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791205522] [2024-06-28 04:14:57,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:57,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 04:14:57,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 04:14:57,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 04:14:57,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 04:14:57,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:57,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:57,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 04:14:57,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:57,896 INFO L124 PetriNetUnfolderBase]: 1405/2112 cut-off events. [2024-06-28 04:14:57,897 INFO L125 PetriNetUnfolderBase]: For 1053/1053 co-relation queries the response was YES. [2024-06-28 04:14:57,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5406 conditions, 2112 events. 1405/2112 cut-off events. For 1053/1053 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9391 event pairs, 627 based on Foata normal form. 7/2117 useless extension candidates. Maximal degree in co-relation 5392. Up to 1974 conditions per place. [2024-06-28 04:14:57,909 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 60 selfloop transitions, 14 changer transitions 0/78 dead transitions. [2024-06-28 04:14:57,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 78 transitions, 417 flow [2024-06-28 04:14:57,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:14:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:14:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-28 04:14:57,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2024-06-28 04:14:57,912 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 132 flow. Second operand 5 states and 114 transitions. [2024-06-28 04:14:57,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 78 transitions, 417 flow [2024-06-28 04:14:57,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 78 transitions, 396 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 04:14:57,915 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 229 flow [2024-06-28 04:14:57,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2024-06-28 04:14:57,916 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-06-28 04:14:57,916 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 229 flow [2024-06-28 04:14:57,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:57,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:57,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:57,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:14:57,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:57,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:57,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2040931289, now seen corresponding path program 1 times [2024-06-28 04:14:57,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:57,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063404758] [2024-06-28 04:14:57,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:57,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:58,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:58,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063404758] [2024-06-28 04:14:58,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063404758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:58,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:58,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:14:58,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118878186] [2024-06-28 04:14:58,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:58,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:14:58,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:58,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:14:58,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:14:58,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 04:14:58,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 04:14:58,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:58,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 04:14:58,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:59,119 INFO L124 PetriNetUnfolderBase]: 1427/2145 cut-off events. [2024-06-28 04:14:59,120 INFO L125 PetriNetUnfolderBase]: For 2513/2515 co-relation queries the response was YES. [2024-06-28 04:14:59,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6648 conditions, 2145 events. 1427/2145 cut-off events. For 2513/2515 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9578 event pairs, 492 based on Foata normal form. 7/2150 useless extension candidates. Maximal degree in co-relation 6631. Up to 1917 conditions per place. [2024-06-28 04:14:59,136 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 71 selfloop transitions, 26 changer transitions 0/101 dead transitions. [2024-06-28 04:14:59,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 101 transitions, 621 flow [2024-06-28 04:14:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:14:59,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:14:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 04:14:59,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2024-06-28 04:14:59,142 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 229 flow. Second operand 6 states and 138 transitions. [2024-06-28 04:14:59,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 101 transitions, 621 flow [2024-06-28 04:14:59,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 101 transitions, 617 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 04:14:59,152 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 390 flow [2024-06-28 04:14:59,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=390, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2024-06-28 04:14:59,153 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2024-06-28 04:14:59,154 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 390 flow [2024-06-28 04:14:59,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 04:14:59,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:59,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:59,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:14:59,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:59,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:59,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2013917925, now seen corresponding path program 1 times [2024-06-28 04:14:59,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:59,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650744079] [2024-06-28 04:14:59,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:59,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:00,115 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 04:15:00,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:00,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650744079] [2024-06-28 04:15:00,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650744079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:00,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:00,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:15:00,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092665655] [2024-06-28 04:15:00,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:00,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:15:00,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:00,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:15:00,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:15:00,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 04:15:00,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 390 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:00,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:00,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 04:15:00,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:00,723 INFO L124 PetriNetUnfolderBase]: 1509/2291 cut-off events. [2024-06-28 04:15:00,723 INFO L125 PetriNetUnfolderBase]: For 5037/5039 co-relation queries the response was YES. [2024-06-28 04:15:00,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8305 conditions, 2291 events. 1509/2291 cut-off events. For 5037/5039 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10594 event pairs, 364 based on Foata normal form. 26/2315 useless extension candidates. Maximal degree in co-relation 8282. Up to 1881 conditions per place. [2024-06-28 04:15:00,745 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 79 selfloop transitions, 28 changer transitions 0/111 dead transitions. [2024-06-28 04:15:00,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 111 transitions, 790 flow [2024-06-28 04:15:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:00,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 04:15:00,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575091575091575 [2024-06-28 04:15:00,748 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 390 flow. Second operand 7 states and 157 transitions. [2024-06-28 04:15:00,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 111 transitions, 790 flow [2024-06-28 04:15:00,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 111 transitions, 780 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 04:15:00,761 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 454 flow [2024-06-28 04:15:00,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=454, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-06-28 04:15:00,763 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 23 predicate places. [2024-06-28 04:15:00,764 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 454 flow [2024-06-28 04:15:00,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:00,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:00,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:00,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:15:00,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:00,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:00,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1413061631, now seen corresponding path program 1 times [2024-06-28 04:15:00,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:00,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028223630] [2024-06-28 04:15:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:00,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:01,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:01,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028223630] [2024-06-28 04:15:01,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028223630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:01,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:01,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:15:01,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899766068] [2024-06-28 04:15:01,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:01,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:15:01,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:01,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:15:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:15:01,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:01,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:01,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:01,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:01,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:01,758 INFO L124 PetriNetUnfolderBase]: 1499/2276 cut-off events. [2024-06-28 04:15:01,759 INFO L125 PetriNetUnfolderBase]: For 6329/6329 co-relation queries the response was YES. [2024-06-28 04:15:01,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8832 conditions, 2276 events. 1499/2276 cut-off events. For 6329/6329 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10492 event pairs, 549 based on Foata normal form. 4/2278 useless extension candidates. Maximal degree in co-relation 8805. Up to 2246 conditions per place. [2024-06-28 04:15:01,777 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 63 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-06-28 04:15:01,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 76 transitions, 642 flow [2024-06-28 04:15:01,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:15:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:15:01,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-06-28 04:15:01,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-06-28 04:15:01,779 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 454 flow. Second operand 5 states and 81 transitions. [2024-06-28 04:15:01,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 76 transitions, 642 flow [2024-06-28 04:15:01,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 582 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:01,787 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 444 flow [2024-06-28 04:15:01,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=444, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2024-06-28 04:15:01,788 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2024-06-28 04:15:01,788 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 444 flow [2024-06-28 04:15:01,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:01,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:01,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:01,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:15:01,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:01,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:01,790 INFO L85 PathProgramCache]: Analyzing trace with hash -264995652, now seen corresponding path program 1 times [2024-06-28 04:15:01,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:01,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100230733] [2024-06-28 04:15:01,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:01,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:02,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:02,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100230733] [2024-06-28 04:15:02,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100230733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:02,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:02,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:15:02,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239796460] [2024-06-28 04:15:02,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:02,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:15:02,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:02,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:15:02,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:15:02,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:02,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 444 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:02,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:02,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:02,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:02,860 INFO L124 PetriNetUnfolderBase]: 1511/2295 cut-off events. [2024-06-28 04:15:02,861 INFO L125 PetriNetUnfolderBase]: For 7223/7225 co-relation queries the response was YES. [2024-06-28 04:15:02,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8919 conditions, 2295 events. 1511/2295 cut-off events. For 7223/7225 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10534 event pairs, 467 based on Foata normal form. 10/2303 useless extension candidates. Maximal degree in co-relation 8889. Up to 2144 conditions per place. [2024-06-28 04:15:02,890 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 70 selfloop transitions, 18 changer transitions 0/91 dead transitions. [2024-06-28 04:15:02,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 734 flow [2024-06-28 04:15:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 04:15:02,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-28 04:15:02,892 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 444 flow. Second operand 6 states and 105 transitions. [2024-06-28 04:15:02,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 734 flow [2024-06-28 04:15:02,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 712 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 04:15:02,902 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 514 flow [2024-06-28 04:15:02,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=514, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-06-28 04:15:02,903 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2024-06-28 04:15:02,904 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 514 flow [2024-06-28 04:15:02,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:02,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:02,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:02,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:15:02,904 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:02,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:02,905 INFO L85 PathProgramCache]: Analyzing trace with hash -226484508, now seen corresponding path program 2 times [2024-06-28 04:15:02,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:02,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043176690] [2024-06-28 04:15:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:02,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:03,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:03,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043176690] [2024-06-28 04:15:03,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043176690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:03,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:03,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:15:03,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656489072] [2024-06-28 04:15:03,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:03,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:15:03,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:03,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:15:03,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:15:03,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:03,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 514 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:03,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:03,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:03,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:04,004 INFO L124 PetriNetUnfolderBase]: 1488/2257 cut-off events. [2024-06-28 04:15:04,005 INFO L125 PetriNetUnfolderBase]: For 8431/8431 co-relation queries the response was YES. [2024-06-28 04:15:04,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9089 conditions, 2257 events. 1488/2257 cut-off events. For 8431/8431 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10259 event pairs, 509 based on Foata normal form. 4/2259 useless extension candidates. Maximal degree in co-relation 9057. Up to 2218 conditions per place. [2024-06-28 04:15:04,023 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 72 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2024-06-28 04:15:04,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 733 flow [2024-06-28 04:15:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:04,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-28 04:15:04,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405982905982906 [2024-06-28 04:15:04,025 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 514 flow. Second operand 6 states and 95 transitions. [2024-06-28 04:15:04,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 733 flow [2024-06-28 04:15:04,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 86 transitions, 710 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 04:15:04,039 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 534 flow [2024-06-28 04:15:04,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=534, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-06-28 04:15:04,041 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-06-28 04:15:04,041 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 534 flow [2024-06-28 04:15:04,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:04,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:04,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:04,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:15:04,042 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:04,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:04,042 INFO L85 PathProgramCache]: Analyzing trace with hash -259273796, now seen corresponding path program 1 times [2024-06-28 04:15:04,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:04,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273756806] [2024-06-28 04:15:04,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:04,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:05,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:05,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273756806] [2024-06-28 04:15:05,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273756806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:05,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:05,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:05,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714073937] [2024-06-28 04:15:05,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:05,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:05,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:05,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:05,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 534 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:05,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:05,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:05,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:05,585 INFO L124 PetriNetUnfolderBase]: 1480/2245 cut-off events. [2024-06-28 04:15:05,585 INFO L125 PetriNetUnfolderBase]: For 9870/9870 co-relation queries the response was YES. [2024-06-28 04:15:05,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9184 conditions, 2245 events. 1480/2245 cut-off events. For 9870/9870 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10180 event pairs, 490 based on Foata normal form. 4/2247 useless extension candidates. Maximal degree in co-relation 9151. Up to 2197 conditions per place. [2024-06-28 04:15:05,603 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 73 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-06-28 04:15:05,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 88 transitions, 760 flow [2024-06-28 04:15:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:05,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-28 04:15:05,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405982905982906 [2024-06-28 04:15:05,605 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 534 flow. Second operand 6 states and 95 transitions. [2024-06-28 04:15:05,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 88 transitions, 760 flow [2024-06-28 04:15:05,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 88 transitions, 736 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:05,621 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 561 flow [2024-06-28 04:15:05,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=561, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-06-28 04:15:05,622 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 33 predicate places. [2024-06-28 04:15:05,622 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 561 flow [2024-06-28 04:15:05,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:05,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:05,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:05,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:15:05,623 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:05,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:05,624 INFO L85 PathProgramCache]: Analyzing trace with hash 567051138, now seen corresponding path program 1 times [2024-06-28 04:15:05,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:05,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910848546] [2024-06-28 04:15:05,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:05,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:06,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:06,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910848546] [2024-06-28 04:15:06,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910848546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:06,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:06,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:06,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576541720] [2024-06-28 04:15:06,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:06,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:06,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:06,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:06,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:06,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:06,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 561 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:06,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:06,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:06,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:07,008 INFO L124 PetriNetUnfolderBase]: 1475/2238 cut-off events. [2024-06-28 04:15:07,009 INFO L125 PetriNetUnfolderBase]: For 11306/11306 co-relation queries the response was YES. [2024-06-28 04:15:07,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9445 conditions, 2238 events. 1475/2238 cut-off events. For 11306/11306 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10162 event pairs, 503 based on Foata normal form. 2/2238 useless extension candidates. Maximal degree in co-relation 9412. Up to 2181 conditions per place. [2024-06-28 04:15:07,027 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 69 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-06-28 04:15:07,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 773 flow [2024-06-28 04:15:07,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:07,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-28 04:15:07,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 04:15:07,029 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 561 flow. Second operand 6 states and 96 transitions. [2024-06-28 04:15:07,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 773 flow [2024-06-28 04:15:07,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 88 transitions, 740 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:07,045 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 572 flow [2024-06-28 04:15:07,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=572, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2024-06-28 04:15:07,047 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 35 predicate places. [2024-06-28 04:15:07,048 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 572 flow [2024-06-28 04:15:07,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:07,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:07,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:07,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:15:07,050 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:07,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:07,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1261530661, now seen corresponding path program 1 times [2024-06-28 04:15:07,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:07,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137111217] [2024-06-28 04:15:07,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:07,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:07,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:07,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:07,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137111217] [2024-06-28 04:15:07,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137111217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:07,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:07,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:07,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775161175] [2024-06-28 04:15:07,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:07,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:07,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:07,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:07,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:07,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:07,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 572 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:07,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:07,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:07,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:08,482 INFO L124 PetriNetUnfolderBase]: 1497/2271 cut-off events. [2024-06-28 04:15:08,482 INFO L125 PetriNetUnfolderBase]: For 13266/13268 co-relation queries the response was YES. [2024-06-28 04:15:08,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9749 conditions, 2271 events. 1497/2271 cut-off events. For 13266/13268 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10410 event pairs, 430 based on Foata normal form. 4/2273 useless extension candidates. Maximal degree in co-relation 9715. Up to 2011 conditions per place. [2024-06-28 04:15:08,499 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 74 selfloop transitions, 33 changer transitions 0/110 dead transitions. [2024-06-28 04:15:08,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 110 transitions, 990 flow [2024-06-28 04:15:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 04:15:08,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 04:15:08,501 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 572 flow. Second operand 7 states and 126 transitions. [2024-06-28 04:15:08,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 110 transitions, 990 flow [2024-06-28 04:15:08,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 110 transitions, 948 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:08,517 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 650 flow [2024-06-28 04:15:08,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=650, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2024-06-28 04:15:08,518 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 37 predicate places. [2024-06-28 04:15:08,518 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 650 flow [2024-06-28 04:15:08,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:08,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:08,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:08,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:15:08,519 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:08,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:08,519 INFO L85 PathProgramCache]: Analyzing trace with hash 250899877, now seen corresponding path program 2 times [2024-06-28 04:15:08,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:08,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961354578] [2024-06-28 04:15:08,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:08,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:09,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:09,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961354578] [2024-06-28 04:15:09,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961354578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:09,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:09,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:09,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457649046] [2024-06-28 04:15:09,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:09,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:09,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:09,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:09,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:09,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:09,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 650 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:09,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:09,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:09,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:09,751 INFO L124 PetriNetUnfolderBase]: 1487/2257 cut-off events. [2024-06-28 04:15:09,751 INFO L125 PetriNetUnfolderBase]: For 15407/15409 co-relation queries the response was YES. [2024-06-28 04:15:09,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10239 conditions, 2257 events. 1487/2257 cut-off events. For 15407/15409 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10306 event pairs, 440 based on Foata normal form. 4/2259 useless extension candidates. Maximal degree in co-relation 10204. Up to 2066 conditions per place. [2024-06-28 04:15:09,768 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 73 selfloop transitions, 29 changer transitions 0/105 dead transitions. [2024-06-28 04:15:09,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 970 flow [2024-06-28 04:15:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:09,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 04:15:09,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432234432234432 [2024-06-28 04:15:09,770 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 650 flow. Second operand 7 states and 121 transitions. [2024-06-28 04:15:09,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 970 flow [2024-06-28 04:15:09,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 105 transitions, 921 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 04:15:09,788 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 667 flow [2024-06-28 04:15:09,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2024-06-28 04:15:09,789 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-06-28 04:15:09,789 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 667 flow [2024-06-28 04:15:09,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:09,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:09,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:09,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:15:09,790 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:09,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:09,790 INFO L85 PathProgramCache]: Analyzing trace with hash 254624899, now seen corresponding path program 1 times [2024-06-28 04:15:09,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:09,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945940682] [2024-06-28 04:15:09,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:09,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:10,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:10,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:10,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945940682] [2024-06-28 04:15:10,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945940682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:10,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:10,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:10,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598818551] [2024-06-28 04:15:10,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:10,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:10,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:10,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:10,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:10,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 667 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:10,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:10,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:10,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:11,376 INFO L124 PetriNetUnfolderBase]: 1521/2311 cut-off events. [2024-06-28 04:15:11,376 INFO L125 PetriNetUnfolderBase]: For 17967/17969 co-relation queries the response was YES. [2024-06-28 04:15:11,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10733 conditions, 2311 events. 1521/2311 cut-off events. For 17967/17969 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10623 event pairs, 428 based on Foata normal form. 10/2319 useless extension candidates. Maximal degree in co-relation 10696. Up to 2136 conditions per place. [2024-06-28 04:15:11,392 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 81 selfloop transitions, 22 changer transitions 0/106 dead transitions. [2024-06-28 04:15:11,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 106 transitions, 965 flow [2024-06-28 04:15:11,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 04:15:11,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43223443223443225 [2024-06-28 04:15:11,394 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 667 flow. Second operand 7 states and 118 transitions. [2024-06-28 04:15:11,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 106 transitions, 965 flow [2024-06-28 04:15:11,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 106 transitions, 895 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:11,412 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 681 flow [2024-06-28 04:15:11,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=681, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-06-28 04:15:11,413 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 42 predicate places. [2024-06-28 04:15:11,413 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 681 flow [2024-06-28 04:15:11,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:11,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:11,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:11,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:15:11,414 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:11,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:11,415 INFO L85 PathProgramCache]: Analyzing trace with hash 664270031, now seen corresponding path program 2 times [2024-06-28 04:15:11,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:11,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855421282] [2024-06-28 04:15:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:11,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:12,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:12,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855421282] [2024-06-28 04:15:12,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855421282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:12,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:12,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:12,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296888562] [2024-06-28 04:15:12,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:12,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:12,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:12,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:12,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:12,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:12,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 681 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:12,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:12,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:12,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:12,956 INFO L124 PetriNetUnfolderBase]: 1538/2337 cut-off events. [2024-06-28 04:15:12,956 INFO L125 PetriNetUnfolderBase]: For 20369/20369 co-relation queries the response was YES. [2024-06-28 04:15:12,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11212 conditions, 2337 events. 1538/2337 cut-off events. For 20369/20369 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10705 event pairs, 488 based on Foata normal form. 4/2339 useless extension candidates. Maximal degree in co-relation 11174. Up to 2257 conditions per place. [2024-06-28 04:15:12,979 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 83 selfloop transitions, 18 changer transitions 0/104 dead transitions. [2024-06-28 04:15:12,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 104 transitions, 961 flow [2024-06-28 04:15:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 04:15:12,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40293040293040294 [2024-06-28 04:15:12,981 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 681 flow. Second operand 7 states and 110 transitions. [2024-06-28 04:15:12,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 104 transitions, 961 flow [2024-06-28 04:15:13,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 104 transitions, 901 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:13,002 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 693 flow [2024-06-28 04:15:13,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=693, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-06-28 04:15:13,003 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2024-06-28 04:15:13,003 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 693 flow [2024-06-28 04:15:13,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:13,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:13,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:13,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:15:13,004 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:13,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:13,005 INFO L85 PathProgramCache]: Analyzing trace with hash 398717022, now seen corresponding path program 1 times [2024-06-28 04:15:13,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:13,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816553629] [2024-06-28 04:15:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:13,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:13,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:13,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816553629] [2024-06-28 04:15:13,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816553629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:13,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:13,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:13,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494961529] [2024-06-28 04:15:13,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:13,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:13,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:13,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:13,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:13,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:13,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 693 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:13,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:13,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:13,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:14,201 INFO L124 PetriNetUnfolderBase]: 1518/2298 cut-off events. [2024-06-28 04:15:14,202 INFO L125 PetriNetUnfolderBase]: For 22780/22782 co-relation queries the response was YES. [2024-06-28 04:15:14,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11206 conditions, 2298 events. 1518/2298 cut-off events. For 22780/22782 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10449 event pairs, 437 based on Foata normal form. 2/2298 useless extension candidates. Maximal degree in co-relation 11167. Up to 2132 conditions per place. [2024-06-28 04:15:14,219 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 75 selfloop transitions, 28 changer transitions 0/106 dead transitions. [2024-06-28 04:15:14,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 106 transitions, 961 flow [2024-06-28 04:15:14,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 04:15:14,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45726495726495725 [2024-06-28 04:15:14,221 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 693 flow. Second operand 6 states and 107 transitions. [2024-06-28 04:15:14,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 106 transitions, 961 flow [2024-06-28 04:15:14,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 106 transitions, 909 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:14,252 INFO L231 Difference]: Finished difference. Result has 85 places, 83 transitions, 712 flow [2024-06-28 04:15:14,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=712, PETRI_PLACES=85, PETRI_TRANSITIONS=83} [2024-06-28 04:15:14,253 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 45 predicate places. [2024-06-28 04:15:14,253 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 83 transitions, 712 flow [2024-06-28 04:15:14,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:14,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:14,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:15:14,254 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:14,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash 671686781, now seen corresponding path program 3 times [2024-06-28 04:15:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526032651] [2024-06-28 04:15:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:15,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:15,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526032651] [2024-06-28 04:15:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526032651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:15,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:15,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:15,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501367030] [2024-06-28 04:15:15,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:15,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:15,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:15,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:15,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:15,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:15,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 83 transitions, 712 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:15,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:15,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:15,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:15,665 INFO L124 PetriNetUnfolderBase]: 1510/2285 cut-off events. [2024-06-28 04:15:15,665 INFO L125 PetriNetUnfolderBase]: For 24944/24944 co-relation queries the response was YES. [2024-06-28 04:15:15,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11331 conditions, 2285 events. 1510/2285 cut-off events. For 24944/24944 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10340 event pairs, 462 based on Foata normal form. 4/2287 useless extension candidates. Maximal degree in co-relation 11291. Up to 2214 conditions per place. [2024-06-28 04:15:15,682 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 89 selfloop transitions, 14 changer transitions 0/106 dead transitions. [2024-06-28 04:15:15,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 106 transitions, 998 flow [2024-06-28 04:15:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 04:15:15,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3992673992673993 [2024-06-28 04:15:15,684 INFO L175 Difference]: Start difference. First operand has 85 places, 83 transitions, 712 flow. Second operand 7 states and 109 transitions. [2024-06-28 04:15:15,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 106 transitions, 998 flow [2024-06-28 04:15:15,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 106 transitions, 942 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:15,710 INFO L231 Difference]: Finished difference. Result has 87 places, 85 transitions, 723 flow [2024-06-28 04:15:15,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=723, PETRI_PLACES=87, PETRI_TRANSITIONS=85} [2024-06-28 04:15:15,711 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2024-06-28 04:15:15,711 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 723 flow [2024-06-28 04:15:15,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:15,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:15,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:15,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:15:15,712 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:15,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2062042194, now seen corresponding path program 1 times [2024-06-28 04:15:15,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:15,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500093676] [2024-06-28 04:15:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:15,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:16,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500093676] [2024-06-28 04:15:16,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500093676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:16,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:16,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:15:16,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042005867] [2024-06-28 04:15:16,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:16,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:15:16,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:16,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:15:16,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:15:16,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:16,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 723 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:16,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:16,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:16,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:16,650 INFO L124 PetriNetUnfolderBase]: 1504/2277 cut-off events. [2024-06-28 04:15:16,650 INFO L125 PetriNetUnfolderBase]: For 27356/27356 co-relation queries the response was YES. [2024-06-28 04:15:16,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11468 conditions, 2277 events. 1504/2277 cut-off events. For 27356/27356 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10283 event pairs, 481 based on Foata normal form. 2/2277 useless extension candidates. Maximal degree in co-relation 11427. Up to 2256 conditions per place. [2024-06-28 04:15:16,669 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 84 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2024-06-28 04:15:16,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 97 transitions, 957 flow [2024-06-28 04:15:16,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:15:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:15:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-28 04:15:16,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:15:16,670 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 723 flow. Second operand 5 states and 78 transitions. [2024-06-28 04:15:16,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 97 transitions, 957 flow [2024-06-28 04:15:16,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 97 transitions, 908 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:16,698 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 730 flow [2024-06-28 04:15:16,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=730, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2024-06-28 04:15:16,699 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2024-06-28 04:15:16,699 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 730 flow [2024-06-28 04:15:16,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:16,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:16,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:16,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:15:16,700 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:16,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:16,700 INFO L85 PathProgramCache]: Analyzing trace with hash -452746627, now seen corresponding path program 1 times [2024-06-28 04:15:16,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:16,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400399395] [2024-06-28 04:15:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:16,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:17,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:17,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400399395] [2024-06-28 04:15:17,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400399395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:17,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:17,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:17,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867221651] [2024-06-28 04:15:17,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:17,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:17,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:17,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:17,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:17,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:17,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 730 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:17,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:17,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:17,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:18,098 INFO L124 PetriNetUnfolderBase]: 1623/2479 cut-off events. [2024-06-28 04:15:18,099 INFO L125 PetriNetUnfolderBase]: For 34438/34440 co-relation queries the response was YES. [2024-06-28 04:15:18,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12736 conditions, 2479 events. 1623/2479 cut-off events. For 34438/34440 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11628 event pairs, 287 based on Foata normal form. 16/2493 useless extension candidates. Maximal degree in co-relation 12694. Up to 1806 conditions per place. [2024-06-28 04:15:18,113 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 93 selfloop transitions, 36 changer transitions 0/132 dead transitions. [2024-06-28 04:15:18,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 132 transitions, 1214 flow [2024-06-28 04:15:18,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 04:15:18,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 04:15:18,118 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 730 flow. Second operand 8 states and 143 transitions. [2024-06-28 04:15:18,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 132 transitions, 1214 flow [2024-06-28 04:15:18,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 132 transitions, 1180 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 04:15:18,150 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 812 flow [2024-06-28 04:15:18,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=812, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-06-28 04:15:18,151 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-06-28 04:15:18,151 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 812 flow [2024-06-28 04:15:18,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:18,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:18,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:18,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:15:18,153 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:18,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:18,153 INFO L85 PathProgramCache]: Analyzing trace with hash -452743837, now seen corresponding path program 2 times [2024-06-28 04:15:18,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:18,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157683946] [2024-06-28 04:15:18,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:18,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:19,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157683946] [2024-06-28 04:15:19,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157683946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:19,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:19,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:19,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273604913] [2024-06-28 04:15:19,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:19,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:19,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:19,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:19,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:19,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 812 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:19,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:19,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:19,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:19,516 INFO L124 PetriNetUnfolderBase]: 1698/2604 cut-off events. [2024-06-28 04:15:19,517 INFO L125 PetriNetUnfolderBase]: For 39586/39588 co-relation queries the response was YES. [2024-06-28 04:15:19,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13669 conditions, 2604 events. 1698/2604 cut-off events. For 39586/39588 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12460 event pairs, 456 based on Foata normal form. 20/2622 useless extension candidates. Maximal degree in co-relation 13626. Up to 2234 conditions per place. [2024-06-28 04:15:19,531 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 91 selfloop transitions, 34 changer transitions 0/128 dead transitions. [2024-06-28 04:15:19,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 128 transitions, 1190 flow [2024-06-28 04:15:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:19,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:15:19,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-06-28 04:15:19,533 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 812 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:15:19,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 128 transitions, 1190 flow [2024-06-28 04:15:19,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 128 transitions, 1141 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:19,574 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 860 flow [2024-06-28 04:15:19,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=860, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-06-28 04:15:19,575 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 56 predicate places. [2024-06-28 04:15:19,575 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 860 flow [2024-06-28 04:15:19,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:19,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:19,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:19,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:15:19,576 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:19,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:19,576 INFO L85 PathProgramCache]: Analyzing trace with hash -449947327, now seen corresponding path program 3 times [2024-06-28 04:15:19,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:19,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373498095] [2024-06-28 04:15:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:19,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:20,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:20,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373498095] [2024-06-28 04:15:20,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373498095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:20,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:20,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:20,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217883687] [2024-06-28 04:15:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:20,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:20,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:20,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:20,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:20,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 860 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:20,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:20,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:20,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:21,028 INFO L124 PetriNetUnfolderBase]: 1703/2619 cut-off events. [2024-06-28 04:15:21,028 INFO L125 PetriNetUnfolderBase]: For 42493/42495 co-relation queries the response was YES. [2024-06-28 04:15:21,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13656 conditions, 2619 events. 1703/2619 cut-off events. For 42493/42495 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12604 event pairs, 471 based on Foata normal form. 34/2651 useless extension candidates. Maximal degree in co-relation 13611. Up to 2232 conditions per place. [2024-06-28 04:15:21,044 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 97 selfloop transitions, 26 changer transitions 0/126 dead transitions. [2024-06-28 04:15:21,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 126 transitions, 1226 flow [2024-06-28 04:15:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:21,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:21,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 04:15:21,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391025641025641 [2024-06-28 04:15:21,046 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 860 flow. Second operand 8 states and 137 transitions. [2024-06-28 04:15:21,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 126 transitions, 1226 flow [2024-06-28 04:15:21,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 126 transitions, 1143 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:21,103 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 862 flow [2024-06-28 04:15:21,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=862, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2024-06-28 04:15:21,104 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2024-06-28 04:15:21,104 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 862 flow [2024-06-28 04:15:21,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:21,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:21,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:21,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:15:21,105 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:21,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash -334478217, now seen corresponding path program 1 times [2024-06-28 04:15:21,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:21,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654081810] [2024-06-28 04:15:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:21,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:22,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:22,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654081810] [2024-06-28 04:15:22,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654081810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:22,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:22,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:22,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265892927] [2024-06-28 04:15:22,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:22,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:22,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:22,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:22,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 862 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:22,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:22,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:22,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:22,586 INFO L124 PetriNetUnfolderBase]: 1720/2646 cut-off events. [2024-06-28 04:15:22,587 INFO L125 PetriNetUnfolderBase]: For 40087/40089 co-relation queries the response was YES. [2024-06-28 04:15:22,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13827 conditions, 2646 events. 1720/2646 cut-off events. For 40087/40089 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12776 event pairs, 471 based on Foata normal form. 6/2650 useless extension candidates. Maximal degree in co-relation 13781. Up to 2489 conditions per place. [2024-06-28 04:15:22,605 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 97 selfloop transitions, 22 changer transitions 0/122 dead transitions. [2024-06-28 04:15:22,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 122 transitions, 1204 flow [2024-06-28 04:15:22,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:22,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:22,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:15:22,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43956043956043955 [2024-06-28 04:15:22,607 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 862 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:15:22,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 122 transitions, 1204 flow [2024-06-28 04:15:22,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 122 transitions, 1147 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:22,687 INFO L231 Difference]: Finished difference. Result has 99 places, 94 transitions, 890 flow [2024-06-28 04:15:22,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=890, PETRI_PLACES=99, PETRI_TRANSITIONS=94} [2024-06-28 04:15:22,688 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 59 predicate places. [2024-06-28 04:15:22,688 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 94 transitions, 890 flow [2024-06-28 04:15:22,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:22,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:22,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:22,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:15:22,688 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:22,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:22,689 INFO L85 PathProgramCache]: Analyzing trace with hash -169320881, now seen corresponding path program 2 times [2024-06-28 04:15:22,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:22,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513957594] [2024-06-28 04:15:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:22,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:23,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513957594] [2024-06-28 04:15:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513957594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:23,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:23,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:23,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463142576] [2024-06-28 04:15:23,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:23,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:23,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:23,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:23,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:23,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 94 transitions, 890 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:23,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:23,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:23,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:24,094 INFO L124 PetriNetUnfolderBase]: 1754/2700 cut-off events. [2024-06-28 04:15:24,095 INFO L125 PetriNetUnfolderBase]: For 43707/43709 co-relation queries the response was YES. [2024-06-28 04:15:24,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14226 conditions, 2700 events. 1754/2700 cut-off events. For 43707/43709 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13126 event pairs, 462 based on Foata normal form. 6/2704 useless extension candidates. Maximal degree in co-relation 14179. Up to 2456 conditions per place. [2024-06-28 04:15:24,110 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 95 selfloop transitions, 25 changer transitions 0/123 dead transitions. [2024-06-28 04:15:24,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 123 transitions, 1236 flow [2024-06-28 04:15:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:24,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 04:15:24,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249084249084249 [2024-06-28 04:15:24,111 INFO L175 Difference]: Start difference. First operand has 99 places, 94 transitions, 890 flow. Second operand 7 states and 116 transitions. [2024-06-28 04:15:24,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 123 transitions, 1236 flow [2024-06-28 04:15:24,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 123 transitions, 1169 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:24,143 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 941 flow [2024-06-28 04:15:24,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=941, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2024-06-28 04:15:24,144 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2024-06-28 04:15:24,144 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 941 flow [2024-06-28 04:15:24,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:24,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:24,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:24,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:15:24,145 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:24,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:24,146 INFO L85 PathProgramCache]: Analyzing trace with hash -660826061, now seen corresponding path program 3 times [2024-06-28 04:15:24,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:24,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58064635] [2024-06-28 04:15:24,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:24,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:25,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:25,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58064635] [2024-06-28 04:15:25,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58064635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:25,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:25,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:25,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352705142] [2024-06-28 04:15:25,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:25,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:25,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:25,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:25,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:25,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:25,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 941 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:25,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:25,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:25,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:25,686 INFO L124 PetriNetUnfolderBase]: 1771/2727 cut-off events. [2024-06-28 04:15:25,686 INFO L125 PetriNetUnfolderBase]: For 48085/48087 co-relation queries the response was YES. [2024-06-28 04:15:25,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14701 conditions, 2727 events. 1771/2727 cut-off events. For 48085/48087 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13209 event pairs, 480 based on Foata normal form. 4/2729 useless extension candidates. Maximal degree in co-relation 14652. Up to 2525 conditions per place. [2024-06-28 04:15:25,702 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 93 selfloop transitions, 32 changer transitions 0/128 dead transitions. [2024-06-28 04:15:25,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 128 transitions, 1303 flow [2024-06-28 04:15:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:25,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 04:15:25,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432234432234432 [2024-06-28 04:15:25,704 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 941 flow. Second operand 7 states and 121 transitions. [2024-06-28 04:15:25,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 128 transitions, 1303 flow [2024-06-28 04:15:25,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 128 transitions, 1237 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:25,756 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 991 flow [2024-06-28 04:15:25,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=991, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2024-06-28 04:15:25,757 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2024-06-28 04:15:25,757 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 991 flow [2024-06-28 04:15:25,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:25,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:25,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:25,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:15:25,757 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:25,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:25,758 INFO L85 PathProgramCache]: Analyzing trace with hash -660819551, now seen corresponding path program 4 times [2024-06-28 04:15:25,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:25,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118068031] [2024-06-28 04:15:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:25,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:26,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:26,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118068031] [2024-06-28 04:15:26,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118068031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:26,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:26,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:26,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524397881] [2024-06-28 04:15:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:26,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:26,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:26,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:26,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:26,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:26,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 991 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:26,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:26,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:26,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:27,233 INFO L124 PetriNetUnfolderBase]: 1788/2754 cut-off events. [2024-06-28 04:15:27,233 INFO L125 PetriNetUnfolderBase]: For 52813/52815 co-relation queries the response was YES. [2024-06-28 04:15:27,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15153 conditions, 2754 events. 1788/2754 cut-off events. For 52813/52815 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13434 event pairs, 471 based on Foata normal form. 4/2756 useless extension candidates. Maximal degree in co-relation 15103. Up to 2424 conditions per place. [2024-06-28 04:15:27,249 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 86 selfloop transitions, 38 changer transitions 0/127 dead transitions. [2024-06-28 04:15:27,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 127 transitions, 1345 flow [2024-06-28 04:15:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:27,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 04:15:27,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:15:27,250 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 991 flow. Second operand 7 states and 117 transitions. [2024-06-28 04:15:27,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 127 transitions, 1345 flow [2024-06-28 04:15:27,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 127 transitions, 1245 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:27,295 INFO L231 Difference]: Finished difference. Result has 107 places, 102 transitions, 1024 flow [2024-06-28 04:15:27,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1024, PETRI_PLACES=107, PETRI_TRANSITIONS=102} [2024-06-28 04:15:27,296 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 67 predicate places. [2024-06-28 04:15:27,296 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 102 transitions, 1024 flow [2024-06-28 04:15:27,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:27,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:27,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:27,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:15:27,297 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:27,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:27,297 INFO L85 PathProgramCache]: Analyzing trace with hash 201237915, now seen corresponding path program 5 times [2024-06-28 04:15:27,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:27,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194817081] [2024-06-28 04:15:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:27,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:28,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:28,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194817081] [2024-06-28 04:15:28,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194817081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:28,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:28,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:28,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436796415] [2024-06-28 04:15:28,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:28,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:28,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:28,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:28,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:28,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:28,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 102 transitions, 1024 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:28,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:28,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:28,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:28,475 INFO L124 PetriNetUnfolderBase]: 1780/2742 cut-off events. [2024-06-28 04:15:28,475 INFO L125 PetriNetUnfolderBase]: For 51467/51469 co-relation queries the response was YES. [2024-06-28 04:15:28,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14976 conditions, 2742 events. 1780/2742 cut-off events. For 51467/51469 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13292 event pairs, 528 based on Foata normal form. 4/2744 useless extension candidates. Maximal degree in co-relation 14925. Up to 2647 conditions per place. [2024-06-28 04:15:28,491 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 108 selfloop transitions, 15 changer transitions 0/126 dead transitions. [2024-06-28 04:15:28,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 126 transitions, 1366 flow [2024-06-28 04:15:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:28,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:28,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 04:15:28,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40293040293040294 [2024-06-28 04:15:28,492 INFO L175 Difference]: Start difference. First operand has 107 places, 102 transitions, 1024 flow. Second operand 7 states and 110 transitions. [2024-06-28 04:15:28,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 126 transitions, 1366 flow [2024-06-28 04:15:28,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 126 transitions, 1255 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:28,541 INFO L231 Difference]: Finished difference. Result has 109 places, 104 transitions, 996 flow [2024-06-28 04:15:28,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=996, PETRI_PLACES=109, PETRI_TRANSITIONS=104} [2024-06-28 04:15:28,542 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2024-06-28 04:15:28,542 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 104 transitions, 996 flow [2024-06-28 04:15:28,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:28,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:28,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:28,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:15:28,542 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:28,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:28,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1330370046, now seen corresponding path program 1 times [2024-06-28 04:15:28,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:28,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968702670] [2024-06-28 04:15:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:28,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:28,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:28,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968702670] [2024-06-28 04:15:28,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968702670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:28,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:28,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:15:28,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004633009] [2024-06-28 04:15:28,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:28,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:15:28,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:28,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:15:28,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:15:29,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:29,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 104 transitions, 996 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:29,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:29,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:29,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:29,476 INFO L124 PetriNetUnfolderBase]: 1790/2755 cut-off events. [2024-06-28 04:15:29,476 INFO L125 PetriNetUnfolderBase]: For 50146/50146 co-relation queries the response was YES. [2024-06-28 04:15:29,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14829 conditions, 2755 events. 1790/2755 cut-off events. For 50146/50146 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13456 event pairs, 545 based on Foata normal form. 2/2755 useless extension candidates. Maximal degree in co-relation 14777. Up to 2705 conditions per place. [2024-06-28 04:15:29,493 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 104 selfloop transitions, 18 changer transitions 0/125 dead transitions. [2024-06-28 04:15:29,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 125 transitions, 1378 flow [2024-06-28 04:15:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-28 04:15:29,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405982905982906 [2024-06-28 04:15:29,494 INFO L175 Difference]: Start difference. First operand has 109 places, 104 transitions, 996 flow. Second operand 6 states and 95 transitions. [2024-06-28 04:15:29,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 125 transitions, 1378 flow [2024-06-28 04:15:29,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 125 transitions, 1317 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:29,554 INFO L231 Difference]: Finished difference. Result has 110 places, 110 transitions, 1036 flow [2024-06-28 04:15:29,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1036, PETRI_PLACES=110, PETRI_TRANSITIONS=110} [2024-06-28 04:15:29,554 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 70 predicate places. [2024-06-28 04:15:29,554 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 110 transitions, 1036 flow [2024-06-28 04:15:29,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:29,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:29,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:29,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:15:29,555 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:29,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1674663332, now seen corresponding path program 2 times [2024-06-28 04:15:29,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:29,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411070330] [2024-06-28 04:15:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:29,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:30,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:30,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411070330] [2024-06-28 04:15:30,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411070330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:30,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:30,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:15:30,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002988607] [2024-06-28 04:15:30,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:30,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:15:30,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:30,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:15:30,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:15:30,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:30,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 110 transitions, 1036 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:30,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:30,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:30,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:30,526 INFO L124 PetriNetUnfolderBase]: 1784/2747 cut-off events. [2024-06-28 04:15:30,526 INFO L125 PetriNetUnfolderBase]: For 53529/53529 co-relation queries the response was YES. [2024-06-28 04:15:30,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15074 conditions, 2747 events. 1784/2747 cut-off events. For 53529/53529 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13428 event pairs, 544 based on Foata normal form. 2/2747 useless extension candidates. Maximal degree in co-relation 15021. Up to 2708 conditions per place. [2024-06-28 04:15:30,543 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 104 selfloop transitions, 15 changer transitions 0/122 dead transitions. [2024-06-28 04:15:30,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 122 transitions, 1306 flow [2024-06-28 04:15:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:15:30,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:15:30,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-28 04:15:30,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4205128205128205 [2024-06-28 04:15:30,544 INFO L175 Difference]: Start difference. First operand has 110 places, 110 transitions, 1036 flow. Second operand 5 states and 82 transitions. [2024-06-28 04:15:30,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 122 transitions, 1306 flow [2024-06-28 04:15:30,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 122 transitions, 1268 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 04:15:30,603 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 1040 flow [2024-06-28 04:15:30,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1040, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2024-06-28 04:15:30,603 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 73 predicate places. [2024-06-28 04:15:30,604 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 1040 flow [2024-06-28 04:15:30,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:30,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:30,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:30,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:15:30,604 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:30,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:30,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1967991496, now seen corresponding path program 1 times [2024-06-28 04:15:30,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:30,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278743163] [2024-06-28 04:15:30,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:30,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:31,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:31,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278743163] [2024-06-28 04:15:31,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278743163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:31,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:31,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963182991] [2024-06-28 04:15:31,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:31,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:31,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:31,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:31,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:31,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 1040 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:31,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:31,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:31,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:31,645 INFO L124 PetriNetUnfolderBase]: 1831/2813 cut-off events. [2024-06-28 04:15:31,646 INFO L125 PetriNetUnfolderBase]: For 58818/58820 co-relation queries the response was YES. [2024-06-28 04:15:31,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15647 conditions, 2813 events. 1831/2813 cut-off events. For 58818/58820 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13747 event pairs, 486 based on Foata normal form. 5/2816 useless extension candidates. Maximal degree in co-relation 15592. Up to 2595 conditions per place. [2024-06-28 04:15:31,663 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 115 selfloop transitions, 36 changer transitions 0/154 dead transitions. [2024-06-28 04:15:31,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 154 transitions, 1686 flow [2024-06-28 04:15:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:31,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 04:15:31,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2024-06-28 04:15:31,665 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 1040 flow. Second operand 7 states and 123 transitions. [2024-06-28 04:15:31,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 154 transitions, 1686 flow [2024-06-28 04:15:31,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 154 transitions, 1652 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:31,721 INFO L231 Difference]: Finished difference. Result has 118 places, 127 transitions, 1308 flow [2024-06-28 04:15:31,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1308, PETRI_PLACES=118, PETRI_TRANSITIONS=127} [2024-06-28 04:15:31,722 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 78 predicate places. [2024-06-28 04:15:31,722 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 127 transitions, 1308 flow [2024-06-28 04:15:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:31,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:31,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:31,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:15:31,723 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:31,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1778889176, now seen corresponding path program 1 times [2024-06-28 04:15:31,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:31,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242244426] [2024-06-28 04:15:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:31,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:32,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:32,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242244426] [2024-06-28 04:15:32,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242244426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:32,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:32,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:15:32,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427131752] [2024-06-28 04:15:32,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:32,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:15:32,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:32,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:15:32,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:15:32,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:32,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 127 transitions, 1308 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:32,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:32,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:32,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:33,321 INFO L124 PetriNetUnfolderBase]: 1872/2884 cut-off events. [2024-06-28 04:15:33,321 INFO L125 PetriNetUnfolderBase]: For 68748/68750 co-relation queries the response was YES. [2024-06-28 04:15:33,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17002 conditions, 2884 events. 1872/2884 cut-off events. For 68748/68750 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14241 event pairs, 487 based on Foata normal form. 12/2894 useless extension candidates. Maximal degree in co-relation 16944. Up to 2603 conditions per place. [2024-06-28 04:15:33,339 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 127 selfloop transitions, 33 changer transitions 0/163 dead transitions. [2024-06-28 04:15:33,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 163 transitions, 1754 flow [2024-06-28 04:15:33,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:33,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 04:15:33,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 04:15:33,341 INFO L175 Difference]: Start difference. First operand has 118 places, 127 transitions, 1308 flow. Second operand 8 states and 136 transitions. [2024-06-28 04:15:33,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 163 transitions, 1754 flow [2024-06-28 04:15:33,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 163 transitions, 1704 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-28 04:15:33,398 INFO L231 Difference]: Finished difference. Result has 125 places, 128 transitions, 1361 flow [2024-06-28 04:15:33,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1361, PETRI_PLACES=125, PETRI_TRANSITIONS=128} [2024-06-28 04:15:33,399 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 85 predicate places. [2024-06-28 04:15:33,399 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 128 transitions, 1361 flow [2024-06-28 04:15:33,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:33,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:33,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:33,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:15:33,400 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:33,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:33,400 INFO L85 PathProgramCache]: Analyzing trace with hash -118578206, now seen corresponding path program 2 times [2024-06-28 04:15:33,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:33,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170337302] [2024-06-28 04:15:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:33,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:34,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:34,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170337302] [2024-06-28 04:15:34,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170337302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:34,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:34,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:15:34,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763155750] [2024-06-28 04:15:34,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:34,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:15:34,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:34,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:15:34,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:15:34,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:34,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 128 transitions, 1361 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:34,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:34,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:34,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:35,044 INFO L124 PetriNetUnfolderBase]: 1913/2955 cut-off events. [2024-06-28 04:15:35,044 INFO L125 PetriNetUnfolderBase]: For 75541/75543 co-relation queries the response was YES. [2024-06-28 04:15:35,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17621 conditions, 2955 events. 1913/2955 cut-off events. For 75541/75543 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 14755 event pairs, 483 based on Foata normal form. 12/2965 useless extension candidates. Maximal degree in co-relation 17560. Up to 2546 conditions per place. [2024-06-28 04:15:35,064 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 119 selfloop transitions, 39 changer transitions 0/161 dead transitions. [2024-06-28 04:15:35,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 161 transitions, 1793 flow [2024-06-28 04:15:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:35,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 04:15:35,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-06-28 04:15:35,066 INFO L175 Difference]: Start difference. First operand has 125 places, 128 transitions, 1361 flow. Second operand 8 states and 132 transitions. [2024-06-28 04:15:35,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 161 transitions, 1793 flow [2024-06-28 04:15:35,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 161 transitions, 1706 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:35,149 INFO L231 Difference]: Finished difference. Result has 127 places, 129 transitions, 1391 flow [2024-06-28 04:15:35,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1391, PETRI_PLACES=127, PETRI_TRANSITIONS=129} [2024-06-28 04:15:35,150 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 87 predicate places. [2024-06-28 04:15:35,150 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 129 transitions, 1391 flow [2024-06-28 04:15:35,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:35,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:35,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:35,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:15:35,151 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:35,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1967722385, now seen corresponding path program 1 times [2024-06-28 04:15:35,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:35,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230363723] [2024-06-28 04:15:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:35,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:35,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:35,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230363723] [2024-06-28 04:15:35,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230363723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:35,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:35,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:35,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830621790] [2024-06-28 04:15:35,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:35,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:35,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:35,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:35,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:35,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 129 transitions, 1391 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:35,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:35,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:35,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:36,179 INFO L124 PetriNetUnfolderBase]: 1928/2975 cut-off events. [2024-06-28 04:15:36,179 INFO L125 PetriNetUnfolderBase]: For 75883/75883 co-relation queries the response was YES. [2024-06-28 04:15:36,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17851 conditions, 2975 events. 1928/2975 cut-off events. For 75883/75883 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 14796 event pairs, 580 based on Foata normal form. 2/2975 useless extension candidates. Maximal degree in co-relation 17789. Up to 2914 conditions per place. [2024-06-28 04:15:36,199 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 132 selfloop transitions, 23 changer transitions 0/158 dead transitions. [2024-06-28 04:15:36,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 158 transitions, 1899 flow [2024-06-28 04:15:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 04:15:36,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 04:15:36,200 INFO L175 Difference]: Start difference. First operand has 127 places, 129 transitions, 1391 flow. Second operand 7 states and 112 transitions. [2024-06-28 04:15:36,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 158 transitions, 1899 flow [2024-06-28 04:15:36,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 158 transitions, 1798 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:36,269 INFO L231 Difference]: Finished difference. Result has 129 places, 138 transitions, 1448 flow [2024-06-28 04:15:36,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1448, PETRI_PLACES=129, PETRI_TRANSITIONS=138} [2024-06-28 04:15:36,270 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 89 predicate places. [2024-06-28 04:15:36,270 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 138 transitions, 1448 flow [2024-06-28 04:15:36,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:36,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:36,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:36,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:15:36,270 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:36,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1207107258, now seen corresponding path program 2 times [2024-06-28 04:15:36,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:36,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814801721] [2024-06-28 04:15:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:36,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:36,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814801721] [2024-06-28 04:15:36,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814801721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:36,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:36,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:36,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354633425] [2024-06-28 04:15:36,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:36,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:36,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:36,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:36,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:36,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 138 transitions, 1448 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:36,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:36,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:36,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:37,331 INFO L124 PetriNetUnfolderBase]: 1979/3046 cut-off events. [2024-06-28 04:15:37,332 INFO L125 PetriNetUnfolderBase]: For 81463/81463 co-relation queries the response was YES. [2024-06-28 04:15:37,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18492 conditions, 3046 events. 1979/3046 cut-off events. For 81463/81463 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15185 event pairs, 583 based on Foata normal form. 3/3047 useless extension candidates. Maximal degree in co-relation 18428. Up to 2978 conditions per place. [2024-06-28 04:15:37,351 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 139 selfloop transitions, 24 changer transitions 0/166 dead transitions. [2024-06-28 04:15:37,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 166 transitions, 1991 flow [2024-06-28 04:15:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:37,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:37,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-28 04:15:37,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391025641025641 [2024-06-28 04:15:37,356 INFO L175 Difference]: Start difference. First operand has 129 places, 138 transitions, 1448 flow. Second operand 8 states and 122 transitions. [2024-06-28 04:15:37,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 166 transitions, 1991 flow [2024-06-28 04:15:37,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 166 transitions, 1947 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 04:15:37,438 INFO L231 Difference]: Finished difference. Result has 136 places, 146 transitions, 1585 flow [2024-06-28 04:15:37,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1585, PETRI_PLACES=136, PETRI_TRANSITIONS=146} [2024-06-28 04:15:37,439 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 96 predicate places. [2024-06-28 04:15:37,439 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 146 transitions, 1585 flow [2024-06-28 04:15:37,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:37,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:37,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:37,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:15:37,440 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:37,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:37,440 INFO L85 PathProgramCache]: Analyzing trace with hash -341912966, now seen corresponding path program 3 times [2024-06-28 04:15:37,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:37,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666280169] [2024-06-28 04:15:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:37,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:38,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:38,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666280169] [2024-06-28 04:15:38,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666280169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:38,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:38,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:38,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200219651] [2024-06-28 04:15:38,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:38,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:38,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:38,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:38,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:38,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 146 transitions, 1585 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:38,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:38,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:38,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:38,806 INFO L124 PetriNetUnfolderBase]: 1959/3015 cut-off events. [2024-06-28 04:15:38,807 INFO L125 PetriNetUnfolderBase]: For 85311/85313 co-relation queries the response was YES. [2024-06-28 04:15:38,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18308 conditions, 3015 events. 1959/3015 cut-off events. For 85311/85313 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14942 event pairs, 539 based on Foata normal form. 12/3025 useless extension candidates. Maximal degree in co-relation 18241. Up to 2851 conditions per place. [2024-06-28 04:15:38,825 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 155 selfloop transitions, 16 changer transitions 0/174 dead transitions. [2024-06-28 04:15:38,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 174 transitions, 1951 flow [2024-06-28 04:15:38,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 04:15:38,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-06-28 04:15:38,826 INFO L175 Difference]: Start difference. First operand has 136 places, 146 transitions, 1585 flow. Second operand 8 states and 124 transitions. [2024-06-28 04:15:38,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 174 transitions, 1951 flow [2024-06-28 04:15:38,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 174 transitions, 1851 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 04:15:38,907 INFO L231 Difference]: Finished difference. Result has 136 places, 145 transitions, 1471 flow [2024-06-28 04:15:38,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1471, PETRI_PLACES=136, PETRI_TRANSITIONS=145} [2024-06-28 04:15:38,907 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 96 predicate places. [2024-06-28 04:15:38,907 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 145 transitions, 1471 flow [2024-06-28 04:15:38,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:38,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:38,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:38,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:15:38,908 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:38,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:38,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1642595315, now seen corresponding path program 2 times [2024-06-28 04:15:38,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:38,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667591820] [2024-06-28 04:15:38,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:38,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:39,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:39,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667591820] [2024-06-28 04:15:39,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667591820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:39,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:39,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:39,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112710100] [2024-06-28 04:15:39,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:39,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:39,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:39,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:39,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:39,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:39,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 145 transitions, 1471 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:39,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:39,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:39,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:39,908 INFO L124 PetriNetUnfolderBase]: 1969/3028 cut-off events. [2024-06-28 04:15:39,908 INFO L125 PetriNetUnfolderBase]: For 81847/81847 co-relation queries the response was YES. [2024-06-28 04:15:39,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18262 conditions, 3028 events. 1969/3028 cut-off events. For 81847/81847 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 15037 event pairs, 570 based on Foata normal form. 2/3028 useless extension candidates. Maximal degree in co-relation 18196. Up to 3001 conditions per place. [2024-06-28 04:15:39,926 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 142 selfloop transitions, 16 changer transitions 0/161 dead transitions. [2024-06-28 04:15:39,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 161 transitions, 1865 flow [2024-06-28 04:15:39,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-28 04:15:39,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3803418803418803 [2024-06-28 04:15:39,928 INFO L175 Difference]: Start difference. First operand has 136 places, 145 transitions, 1471 flow. Second operand 6 states and 89 transitions. [2024-06-28 04:15:39,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 161 transitions, 1865 flow [2024-06-28 04:15:40,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 161 transitions, 1801 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 04:15:40,008 INFO L231 Difference]: Finished difference. Result has 136 places, 151 transitions, 1511 flow [2024-06-28 04:15:40,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1511, PETRI_PLACES=136, PETRI_TRANSITIONS=151} [2024-06-28 04:15:40,008 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 96 predicate places. [2024-06-28 04:15:40,008 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 151 transitions, 1511 flow [2024-06-28 04:15:40,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:40,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:40,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:40,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:15:40,009 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:40,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:40,009 INFO L85 PathProgramCache]: Analyzing trace with hash -24385338, now seen corresponding path program 3 times [2024-06-28 04:15:40,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:40,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004604804] [2024-06-28 04:15:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:40,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:40,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:40,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004604804] [2024-06-28 04:15:40,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004604804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:40,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:40,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:40,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429298033] [2024-06-28 04:15:40,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:40,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:40,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:40,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:40,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:40,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:40,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 151 transitions, 1511 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:40,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:40,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:40,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:41,146 INFO L124 PetriNetUnfolderBase]: 2012/3088 cut-off events. [2024-06-28 04:15:41,146 INFO L125 PetriNetUnfolderBase]: For 82314/82314 co-relation queries the response was YES. [2024-06-28 04:15:41,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18659 conditions, 3088 events. 2012/3088 cut-off events. For 82314/82314 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15408 event pairs, 502 based on Foata normal form. 3/3089 useless extension candidates. Maximal degree in co-relation 18592. Up to 2907 conditions per place. [2024-06-28 04:15:41,167 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 148 selfloop transitions, 36 changer transitions 0/187 dead transitions. [2024-06-28 04:15:41,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 187 transitions, 2124 flow [2024-06-28 04:15:41,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:41,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 04:15:41,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468864468864469 [2024-06-28 04:15:41,168 INFO L175 Difference]: Start difference. First operand has 136 places, 151 transitions, 1511 flow. Second operand 7 states and 122 transitions. [2024-06-28 04:15:41,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 187 transitions, 2124 flow [2024-06-28 04:15:41,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 187 transitions, 2080 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 04:15:41,262 INFO L231 Difference]: Finished difference. Result has 143 places, 159 transitions, 1706 flow [2024-06-28 04:15:41,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1706, PETRI_PLACES=143, PETRI_TRANSITIONS=159} [2024-06-28 04:15:41,262 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 103 predicate places. [2024-06-28 04:15:41,262 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 159 transitions, 1706 flow [2024-06-28 04:15:41,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:41,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:41,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:41,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:15:41,263 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:41,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash 374772557, now seen corresponding path program 3 times [2024-06-28 04:15:41,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:41,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290876352] [2024-06-28 04:15:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:41,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:41,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:41,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290876352] [2024-06-28 04:15:41,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290876352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:41,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:41,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:41,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467146641] [2024-06-28 04:15:41,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:41,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:41,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:41,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:41,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:41,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:41,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 159 transitions, 1706 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:41,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:41,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:41,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:42,267 INFO L124 PetriNetUnfolderBase]: 2014/3091 cut-off events. [2024-06-28 04:15:42,267 INFO L125 PetriNetUnfolderBase]: For 87391/87391 co-relation queries the response was YES. [2024-06-28 04:15:42,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19137 conditions, 3091 events. 2014/3091 cut-off events. For 87391/87391 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15361 event pairs, 576 based on Foata normal form. 2/3091 useless extension candidates. Maximal degree in co-relation 19066. Up to 3027 conditions per place. [2024-06-28 04:15:42,291 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 146 selfloop transitions, 31 changer transitions 0/180 dead transitions. [2024-06-28 04:15:42,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 180 transitions, 2218 flow [2024-06-28 04:15:42,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:42,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 04:15:42,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-06-28 04:15:42,293 INFO L175 Difference]: Start difference. First operand has 143 places, 159 transitions, 1706 flow. Second operand 6 states and 100 transitions. [2024-06-28 04:15:42,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 180 transitions, 2218 flow [2024-06-28 04:15:42,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 180 transitions, 2150 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 04:15:42,403 INFO L231 Difference]: Finished difference. Result has 146 places, 162 transitions, 1758 flow [2024-06-28 04:15:42,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1758, PETRI_PLACES=146, PETRI_TRANSITIONS=162} [2024-06-28 04:15:42,403 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 106 predicate places. [2024-06-28 04:15:42,403 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 162 transitions, 1758 flow [2024-06-28 04:15:42,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:42,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:42,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:42,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:15:42,404 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:42,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:42,404 INFO L85 PathProgramCache]: Analyzing trace with hash -273141159, now seen corresponding path program 1 times [2024-06-28 04:15:42,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:42,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367629646] [2024-06-28 04:15:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:42,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:42,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367629646] [2024-06-28 04:15:42,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367629646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:42,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:42,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:42,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420039314] [2024-06-28 04:15:42,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:42,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:42,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:42,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:42,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:42,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:42,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 162 transitions, 1758 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:42,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:42,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:42,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:43,624 INFO L124 PetriNetUnfolderBase]: 2034/3119 cut-off events. [2024-06-28 04:15:43,625 INFO L125 PetriNetUnfolderBase]: For 93331/93331 co-relation queries the response was YES. [2024-06-28 04:15:43,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19304 conditions, 3119 events. 2034/3119 cut-off events. For 93331/93331 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15522 event pairs, 574 based on Foata normal form. 4/3121 useless extension candidates. Maximal degree in co-relation 19232. Up to 3022 conditions per place. [2024-06-28 04:15:43,648 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 153 selfloop transitions, 30 changer transitions 0/186 dead transitions. [2024-06-28 04:15:43,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 186 transitions, 2302 flow [2024-06-28 04:15:43,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-28 04:15:43,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065934065934066 [2024-06-28 04:15:43,650 INFO L175 Difference]: Start difference. First operand has 146 places, 162 transitions, 1758 flow. Second operand 7 states and 111 transitions. [2024-06-28 04:15:43,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 186 transitions, 2302 flow [2024-06-28 04:15:43,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 186 transitions, 2222 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:43,767 INFO L231 Difference]: Finished difference. Result has 149 places, 168 transitions, 1813 flow [2024-06-28 04:15:43,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1813, PETRI_PLACES=149, PETRI_TRANSITIONS=168} [2024-06-28 04:15:43,768 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 109 predicate places. [2024-06-28 04:15:43,768 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 168 transitions, 1813 flow [2024-06-28 04:15:43,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:43,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:43,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:43,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:15:43,769 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:43,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:43,769 INFO L85 PathProgramCache]: Analyzing trace with hash 374957069, now seen corresponding path program 2 times [2024-06-28 04:15:43,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:43,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943459047] [2024-06-28 04:15:43,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:43,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:44,307 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 04:15:44,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:44,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943459047] [2024-06-28 04:15:44,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943459047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:44,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:44,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:44,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605350832] [2024-06-28 04:15:44,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:44,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:44,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:44,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:44,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:44,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:44,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 168 transitions, 1813 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:44,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:44,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:44,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:44,913 INFO L124 PetriNetUnfolderBase]: 2054/3147 cut-off events. [2024-06-28 04:15:44,913 INFO L125 PetriNetUnfolderBase]: For 94260/94260 co-relation queries the response was YES. [2024-06-28 04:15:44,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19670 conditions, 3147 events. 2054/3147 cut-off events. For 94260/94260 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15679 event pairs, 578 based on Foata normal form. 4/3149 useless extension candidates. Maximal degree in co-relation 19598. Up to 3062 conditions per place. [2024-06-28 04:15:44,934 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 158 selfloop transitions, 27 changer transitions 0/188 dead transitions. [2024-06-28 04:15:44,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 188 transitions, 2335 flow [2024-06-28 04:15:44,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-28 04:15:44,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-06-28 04:15:44,936 INFO L175 Difference]: Start difference. First operand has 149 places, 168 transitions, 1813 flow. Second operand 6 states and 99 transitions. [2024-06-28 04:15:44,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 188 transitions, 2335 flow [2024-06-28 04:15:45,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 188 transitions, 2290 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 04:15:45,045 INFO L231 Difference]: Finished difference. Result has 152 places, 171 transitions, 1865 flow [2024-06-28 04:15:45,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1865, PETRI_PLACES=152, PETRI_TRANSITIONS=171} [2024-06-28 04:15:45,046 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 112 predicate places. [2024-06-28 04:15:45,046 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 171 transitions, 1865 flow [2024-06-28 04:15:45,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:45,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:45,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:45,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:15:45,046 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:45,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:45,046 INFO L85 PathProgramCache]: Analyzing trace with hash 375164459, now seen corresponding path program 3 times [2024-06-28 04:15:45,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:45,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292077764] [2024-06-28 04:15:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:45,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:45,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:45,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292077764] [2024-06-28 04:15:45,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292077764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:45,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:45,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:45,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88899958] [2024-06-28 04:15:45,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:45,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:45,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:45,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:45,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:45,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 171 transitions, 1865 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:45,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:45,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:45,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:46,172 INFO L124 PetriNetUnfolderBase]: 2042/3131 cut-off events. [2024-06-28 04:15:46,172 INFO L125 PetriNetUnfolderBase]: For 97106/97106 co-relation queries the response was YES. [2024-06-28 04:15:46,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19646 conditions, 3131 events. 2042/3131 cut-off events. For 97106/97106 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15561 event pairs, 570 based on Foata normal form. 4/3133 useless extension candidates. Maximal degree in co-relation 19572. Up to 3054 conditions per place. [2024-06-28 04:15:46,191 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 158 selfloop transitions, 28 changer transitions 0/189 dead transitions. [2024-06-28 04:15:46,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 189 transitions, 2291 flow [2024-06-28 04:15:46,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:46,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-28 04:15:46,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3814102564102564 [2024-06-28 04:15:46,193 INFO L175 Difference]: Start difference. First operand has 152 places, 171 transitions, 1865 flow. Second operand 8 states and 119 transitions. [2024-06-28 04:15:46,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 189 transitions, 2291 flow [2024-06-28 04:15:46,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 189 transitions, 2213 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:46,302 INFO L231 Difference]: Finished difference. Result has 156 places, 171 transitions, 1850 flow [2024-06-28 04:15:46,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1850, PETRI_PLACES=156, PETRI_TRANSITIONS=171} [2024-06-28 04:15:46,303 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 116 predicate places. [2024-06-28 04:15:46,303 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 171 transitions, 1850 flow [2024-06-28 04:15:46,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:46,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:46,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:46,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:15:46,304 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:46,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:46,304 INFO L85 PathProgramCache]: Analyzing trace with hash 375172395, now seen corresponding path program 1 times [2024-06-28 04:15:46,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:46,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341009437] [2024-06-28 04:15:46,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:46,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:46,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:46,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341009437] [2024-06-28 04:15:46,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341009437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:46,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:46,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:46,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413790171] [2024-06-28 04:15:46,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:46,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:46,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:46,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:46,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:47,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:47,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 171 transitions, 1850 flow. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:47,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:47,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:47,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:47,527 INFO L124 PetriNetUnfolderBase]: 2037/3124 cut-off events. [2024-06-28 04:15:47,527 INFO L125 PetriNetUnfolderBase]: For 99752/99752 co-relation queries the response was YES. [2024-06-28 04:15:47,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19625 conditions, 3124 events. 2037/3124 cut-off events. For 99752/99752 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15457 event pairs, 573 based on Foata normal form. 2/3124 useless extension candidates. Maximal degree in co-relation 19550. Up to 3097 conditions per place. [2024-06-28 04:15:47,550 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 166 selfloop transitions, 14 changer transitions 0/183 dead transitions. [2024-06-28 04:15:47,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 183 transitions, 2266 flow [2024-06-28 04:15:47,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:47,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:47,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-28 04:15:47,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37606837606837606 [2024-06-28 04:15:47,552 INFO L175 Difference]: Start difference. First operand has 156 places, 171 transitions, 1850 flow. Second operand 6 states and 88 transitions. [2024-06-28 04:15:47,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 183 transitions, 2266 flow [2024-06-28 04:15:47,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 183 transitions, 2186 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 04:15:47,688 INFO L231 Difference]: Finished difference. Result has 155 places, 173 transitions, 1839 flow [2024-06-28 04:15:47,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1839, PETRI_PLACES=155, PETRI_TRANSITIONS=173} [2024-06-28 04:15:47,688 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 115 predicate places. [2024-06-28 04:15:47,688 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 173 transitions, 1839 flow [2024-06-28 04:15:47,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:47,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:47,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:47,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:15:47,689 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:47,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:47,689 INFO L85 PathProgramCache]: Analyzing trace with hash -878432223, now seen corresponding path program 1 times [2024-06-28 04:15:47,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:47,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071438955] [2024-06-28 04:15:47,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:47,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:48,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:48,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071438955] [2024-06-28 04:15:48,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071438955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:48,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:48,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:15:48,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277030001] [2024-06-28 04:15:48,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:48,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:15:48,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:48,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:15:48,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:15:48,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:48,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 173 transitions, 1839 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:48,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:48,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:48,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:49,206 INFO L124 PetriNetUnfolderBase]: 2079/3184 cut-off events. [2024-06-28 04:15:49,206 INFO L125 PetriNetUnfolderBase]: For 106688/106690 co-relation queries the response was YES. [2024-06-28 04:15:49,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20178 conditions, 3184 events. 2079/3184 cut-off events. For 106688/106690 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15916 event pairs, 500 based on Foata normal form. 5/3187 useless extension candidates. Maximal degree in co-relation 20102. Up to 2824 conditions per place. [2024-06-28 04:15:49,227 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 153 selfloop transitions, 66 changer transitions 0/222 dead transitions. [2024-06-28 04:15:49,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 222 transitions, 2724 flow [2024-06-28 04:15:49,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:15:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:15:49,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:15:49,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 04:15:49,228 INFO L175 Difference]: Start difference. First operand has 155 places, 173 transitions, 1839 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:15:49,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 222 transitions, 2724 flow [2024-06-28 04:15:49,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 222 transitions, 2671 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:49,381 INFO L231 Difference]: Finished difference. Result has 161 places, 184 transitions, 2077 flow [2024-06-28 04:15:49,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2077, PETRI_PLACES=161, PETRI_TRANSITIONS=184} [2024-06-28 04:15:49,382 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 121 predicate places. [2024-06-28 04:15:49,382 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 184 transitions, 2077 flow [2024-06-28 04:15:49,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:49,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:49,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:49,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:15:49,382 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:49,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:49,383 INFO L85 PathProgramCache]: Analyzing trace with hash -878192903, now seen corresponding path program 1 times [2024-06-28 04:15:49,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:49,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044831198] [2024-06-28 04:15:49,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:49,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:50,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:50,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044831198] [2024-06-28 04:15:50,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044831198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:50,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:50,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:15:50,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256875865] [2024-06-28 04:15:50,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:50,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:15:50,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:50,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:15:50,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:15:50,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:50,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 184 transitions, 2077 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:50,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:50,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:50,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:50,688 INFO L124 PetriNetUnfolderBase]: 2283/3467 cut-off events. [2024-06-28 04:15:50,688 INFO L125 PetriNetUnfolderBase]: For 131297/131299 co-relation queries the response was YES. [2024-06-28 04:15:50,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23261 conditions, 3467 events. 2283/3467 cut-off events. For 131297/131299 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17335 event pairs, 511 based on Foata normal form. 12/3477 useless extension candidates. Maximal degree in co-relation 23183. Up to 2468 conditions per place. [2024-06-28 04:15:50,782 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 143 selfloop transitions, 97 changer transitions 0/243 dead transitions. [2024-06-28 04:15:50,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 243 transitions, 3199 flow [2024-06-28 04:15:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 04:15:50,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-28 04:15:50,783 INFO L175 Difference]: Start difference. First operand has 161 places, 184 transitions, 2077 flow. Second operand 8 states and 150 transitions. [2024-06-28 04:15:50,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 243 transitions, 3199 flow [2024-06-28 04:15:50,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 243 transitions, 3068 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:50,943 INFO L231 Difference]: Finished difference. Result has 166 places, 202 transitions, 2475 flow [2024-06-28 04:15:50,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2475, PETRI_PLACES=166, PETRI_TRANSITIONS=202} [2024-06-28 04:15:50,944 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 126 predicate places. [2024-06-28 04:15:50,944 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 202 transitions, 2475 flow [2024-06-28 04:15:50,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:50,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:50,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:50,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:15:50,945 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:50,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:50,945 INFO L85 PathProgramCache]: Analyzing trace with hash -874618975, now seen corresponding path program 1 times [2024-06-28 04:15:50,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:50,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546513570] [2024-06-28 04:15:50,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:50,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:51,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:51,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546513570] [2024-06-28 04:15:51,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546513570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:51,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:51,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:51,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834734385] [2024-06-28 04:15:51,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:51,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:51,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:51,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:51,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:51,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:51,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 202 transitions, 2475 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:51,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:51,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:51,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:52,032 INFO L124 PetriNetUnfolderBase]: 2319/3517 cut-off events. [2024-06-28 04:15:52,032 INFO L125 PetriNetUnfolderBase]: For 138112/138114 co-relation queries the response was YES. [2024-06-28 04:15:52,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25251 conditions, 3517 events. 2319/3517 cut-off events. For 138112/138114 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 17646 event pairs, 524 based on Foata normal form. 6/3521 useless extension candidates. Maximal degree in co-relation 25169. Up to 3218 conditions per place. [2024-06-28 04:15:52,063 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 172 selfloop transitions, 60 changer transitions 0/235 dead transitions. [2024-06-28 04:15:52,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 235 transitions, 3320 flow [2024-06-28 04:15:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 04:15:52,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 04:15:52,064 INFO L175 Difference]: Start difference. First operand has 166 places, 202 transitions, 2475 flow. Second operand 7 states and 119 transitions. [2024-06-28 04:15:52,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 235 transitions, 3320 flow [2024-06-28 04:15:52,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 235 transitions, 3198 flow, removed 48 selfloop flow, removed 2 redundant places. [2024-06-28 04:15:52,271 INFO L231 Difference]: Finished difference. Result has 172 places, 211 transitions, 2669 flow [2024-06-28 04:15:52,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2669, PETRI_PLACES=172, PETRI_TRANSITIONS=211} [2024-06-28 04:15:52,271 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 132 predicate places. [2024-06-28 04:15:52,272 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 211 transitions, 2669 flow [2024-06-28 04:15:52,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:52,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:52,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:52,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 04:15:52,272 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:52,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:52,273 INFO L85 PathProgramCache]: Analyzing trace with hash -87110213, now seen corresponding path program 2 times [2024-06-28 04:15:52,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:52,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855646057] [2024-06-28 04:15:52,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:52,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:52,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:52,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855646057] [2024-06-28 04:15:52,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855646057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:52,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:52,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929756361] [2024-06-28 04:15:52,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:52,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:52,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:52,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:52,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:52,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 211 transitions, 2669 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:52,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:52,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:52,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:53,434 INFO L124 PetriNetUnfolderBase]: 2303/3494 cut-off events. [2024-06-28 04:15:53,434 INFO L125 PetriNetUnfolderBase]: For 140107/140107 co-relation queries the response was YES. [2024-06-28 04:15:53,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24859 conditions, 3494 events. 2303/3494 cut-off events. For 140107/140107 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17449 event pairs, 624 based on Foata normal form. 4/3496 useless extension candidates. Maximal degree in co-relation 24774. Up to 3435 conditions per place. [2024-06-28 04:15:53,464 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 203 selfloop transitions, 24 changer transitions 0/230 dead transitions. [2024-06-28 04:15:53,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 230 transitions, 3177 flow [2024-06-28 04:15:53,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:53,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-28 04:15:53,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 04:15:53,466 INFO L175 Difference]: Start difference. First operand has 172 places, 211 transitions, 2669 flow. Second operand 8 states and 120 transitions. [2024-06-28 04:15:53,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 230 transitions, 3177 flow [2024-06-28 04:15:53,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 230 transitions, 3053 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-28 04:15:53,681 INFO L231 Difference]: Finished difference. Result has 177 places, 211 transitions, 2601 flow [2024-06-28 04:15:53,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2601, PETRI_PLACES=177, PETRI_TRANSITIONS=211} [2024-06-28 04:15:53,681 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 137 predicate places. [2024-06-28 04:15:53,682 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 211 transitions, 2601 flow [2024-06-28 04:15:53,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:53,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:53,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:53,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 04:15:53,682 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:53,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:53,683 INFO L85 PathProgramCache]: Analyzing trace with hash -869850803, now seen corresponding path program 2 times [2024-06-28 04:15:53,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:53,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522871639] [2024-06-28 04:15:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:53,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:54,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:54,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522871639] [2024-06-28 04:15:54,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522871639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:54,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:54,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:54,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854948852] [2024-06-28 04:15:54,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:54,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:54,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:54,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:54,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:54,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:54,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 211 transitions, 2601 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:54,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:54,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:54,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:55,234 INFO L124 PetriNetUnfolderBase]: 2653/3977 cut-off events. [2024-06-28 04:15:55,234 INFO L125 PetriNetUnfolderBase]: For 179368/179368 co-relation queries the response was YES. [2024-06-28 04:15:55,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29117 conditions, 3977 events. 2653/3977 cut-off events. For 179368/179368 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 20026 event pairs, 657 based on Foata normal form. 6/3981 useless extension candidates. Maximal degree in co-relation 29031. Up to 3563 conditions per place. [2024-06-28 04:15:55,274 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 206 selfloop transitions, 57 changer transitions 0/266 dead transitions. [2024-06-28 04:15:55,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 266 transitions, 3804 flow [2024-06-28 04:15:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:15:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:15:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 04:15:55,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 04:15:55,280 INFO L175 Difference]: Start difference. First operand has 177 places, 211 transitions, 2601 flow. Second operand 10 states and 160 transitions. [2024-06-28 04:15:55,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 266 transitions, 3804 flow [2024-06-28 04:15:55,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 266 transitions, 3764 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:55,522 INFO L231 Difference]: Finished difference. Result has 183 places, 233 transitions, 3026 flow [2024-06-28 04:15:55,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3026, PETRI_PLACES=183, PETRI_TRANSITIONS=233} [2024-06-28 04:15:55,523 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 143 predicate places. [2024-06-28 04:15:55,523 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 233 transitions, 3026 flow [2024-06-28 04:15:55,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:55,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:55,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:55,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 04:15:55,524 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:55,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash -869861033, now seen corresponding path program 3 times [2024-06-28 04:15:55,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:55,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331124820] [2024-06-28 04:15:55,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:55,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:56,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:56,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331124820] [2024-06-28 04:15:56,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331124820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:56,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:56,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:15:56,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181017537] [2024-06-28 04:15:56,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:56,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:15:56,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:15:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:15:56,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:56,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 233 transitions, 3026 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:56,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:56,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:56,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:56,955 INFO L124 PetriNetUnfolderBase]: 2629/3947 cut-off events. [2024-06-28 04:15:56,955 INFO L125 PetriNetUnfolderBase]: For 186802/186802 co-relation queries the response was YES. [2024-06-28 04:15:56,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29590 conditions, 3947 events. 2629/3947 cut-off events. For 186802/186802 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 19922 event pairs, 671 based on Foata normal form. 12/3957 useless extension candidates. Maximal degree in co-relation 29501. Up to 3558 conditions per place. [2024-06-28 04:15:56,996 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 205 selfloop transitions, 58 changer transitions 0/266 dead transitions. [2024-06-28 04:15:56,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 266 transitions, 3974 flow [2024-06-28 04:15:56,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:15:56,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:15:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 04:15:56,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-06-28 04:15:56,997 INFO L175 Difference]: Start difference. First operand has 183 places, 233 transitions, 3026 flow. Second operand 9 states and 150 transitions. [2024-06-28 04:15:56,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 266 transitions, 3974 flow [2024-06-28 04:15:57,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 266 transitions, 3818 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:57,266 INFO L231 Difference]: Finished difference. Result has 188 places, 237 transitions, 3114 flow [2024-06-28 04:15:57,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2874, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3114, PETRI_PLACES=188, PETRI_TRANSITIONS=237} [2024-06-28 04:15:57,266 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 148 predicate places. [2024-06-28 04:15:57,267 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 237 transitions, 3114 flow [2024-06-28 04:15:57,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:57,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:57,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:57,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 04:15:57,267 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:57,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:57,267 INFO L85 PathProgramCache]: Analyzing trace with hash -869861343, now seen corresponding path program 2 times [2024-06-28 04:15:57,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:57,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786825395] [2024-06-28 04:15:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:57,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:57,994 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 04:15:57,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:57,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786825395] [2024-06-28 04:15:57,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786825395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:57,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:57,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:15:57,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966495790] [2024-06-28 04:15:57,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:57,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:15:57,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:57,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:15:57,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:15:58,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:58,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 237 transitions, 3114 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:58,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:58,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:58,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:58,810 INFO L124 PetriNetUnfolderBase]: 2598/3905 cut-off events. [2024-06-28 04:15:58,810 INFO L125 PetriNetUnfolderBase]: For 183154/183154 co-relation queries the response was YES. [2024-06-28 04:15:58,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29027 conditions, 3905 events. 2598/3905 cut-off events. For 183154/183154 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19688 event pairs, 649 based on Foata normal form. 9/3912 useless extension candidates. Maximal degree in co-relation 28935. Up to 3641 conditions per place. [2024-06-28 04:15:58,845 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 211 selfloop transitions, 56 changer transitions 0/270 dead transitions. [2024-06-28 04:15:58,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 270 transitions, 3978 flow [2024-06-28 04:15:58,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:15:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:15:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 04:15:58,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188034188034188 [2024-06-28 04:15:58,846 INFO L175 Difference]: Start difference. First operand has 188 places, 237 transitions, 3114 flow. Second operand 9 states and 147 transitions. [2024-06-28 04:15:58,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 270 transitions, 3978 flow [2024-06-28 04:15:59,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 270 transitions, 3836 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:59,091 INFO L231 Difference]: Finished difference. Result has 195 places, 242 transitions, 3214 flow [2024-06-28 04:15:59,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2998, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3214, PETRI_PLACES=195, PETRI_TRANSITIONS=242} [2024-06-28 04:15:59,091 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 155 predicate places. [2024-06-28 04:15:59,091 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 242 transitions, 3214 flow [2024-06-28 04:15:59,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:59,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:59,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:59,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 04:15:59,092 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:59,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:59,092 INFO L85 PathProgramCache]: Analyzing trace with hash 321490849, now seen corresponding path program 3 times [2024-06-28 04:15:59,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:59,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248756833] [2024-06-28 04:15:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:59,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:59,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:59,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248756833] [2024-06-28 04:15:59,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248756833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:59,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:59,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:59,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010504329] [2024-06-28 04:15:59,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:59,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:59,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:59,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:59,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:15:59,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 242 transitions, 3214 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:59,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:59,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:15:59,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:00,352 INFO L124 PetriNetUnfolderBase]: 2608/3919 cut-off events. [2024-06-28 04:16:00,352 INFO L125 PetriNetUnfolderBase]: For 184915/184915 co-relation queries the response was YES. [2024-06-28 04:16:00,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29517 conditions, 3919 events. 2608/3919 cut-off events. For 184915/184915 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 19697 event pairs, 713 based on Foata normal form. 2/3919 useless extension candidates. Maximal degree in co-relation 29421. Up to 3845 conditions per place. [2024-06-28 04:16:00,388 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 233 selfloop transitions, 29 changer transitions 0/265 dead transitions. [2024-06-28 04:16:00,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 265 transitions, 3969 flow [2024-06-28 04:16:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:16:00,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:16:00,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-28 04:16:00,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:16:00,389 INFO L175 Difference]: Start difference. First operand has 195 places, 242 transitions, 3214 flow. Second operand 8 states and 117 transitions. [2024-06-28 04:16:00,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 265 transitions, 3969 flow [2024-06-28 04:16:00,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 265 transitions, 3856 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 04:16:00,643 INFO L231 Difference]: Finished difference. Result has 198 places, 247 transitions, 3265 flow [2024-06-28 04:16:00,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3103, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3265, PETRI_PLACES=198, PETRI_TRANSITIONS=247} [2024-06-28 04:16:00,643 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 158 predicate places. [2024-06-28 04:16:00,643 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 247 transitions, 3265 flow [2024-06-28 04:16:00,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:00,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:00,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:00,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 04:16:00,644 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:00,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:00,644 INFO L85 PathProgramCache]: Analyzing trace with hash 122547127, now seen corresponding path program 4 times [2024-06-28 04:16:00,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:00,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294248429] [2024-06-28 04:16:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:00,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:01,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:01,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294248429] [2024-06-28 04:16:01,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294248429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:01,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:01,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:01,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109142432] [2024-06-28 04:16:01,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:01,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:01,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:01,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:01,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:01,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:01,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 247 transitions, 3265 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:01,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:01,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:01,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:01,848 INFO L124 PetriNetUnfolderBase]: 2602/3911 cut-off events. [2024-06-28 04:16:01,848 INFO L125 PetriNetUnfolderBase]: For 191483/191483 co-relation queries the response was YES. [2024-06-28 04:16:01,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29357 conditions, 3911 events. 2602/3911 cut-off events. For 191483/191483 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 19677 event pairs, 702 based on Foata normal form. 2/3911 useless extension candidates. Maximal degree in co-relation 29259. Up to 3875 conditions per place. [2024-06-28 04:16:01,884 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 237 selfloop transitions, 20 changer transitions 0/260 dead transitions. [2024-06-28 04:16:01,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 260 transitions, 3815 flow [2024-06-28 04:16:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:16:01,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:16:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-28 04:16:01,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3772893772893773 [2024-06-28 04:16:01,885 INFO L175 Difference]: Start difference. First operand has 198 places, 247 transitions, 3265 flow. Second operand 7 states and 103 transitions. [2024-06-28 04:16:01,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 260 transitions, 3815 flow [2024-06-28 04:16:02,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 260 transitions, 3622 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 04:16:02,161 INFO L231 Difference]: Finished difference. Result has 198 places, 247 transitions, 3118 flow [2024-06-28 04:16:02,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3072, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3118, PETRI_PLACES=198, PETRI_TRANSITIONS=247} [2024-06-28 04:16:02,161 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 158 predicate places. [2024-06-28 04:16:02,161 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 247 transitions, 3118 flow [2024-06-28 04:16:02,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:02,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:02,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:02,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 04:16:02,162 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:02,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash -435789305, now seen corresponding path program 5 times [2024-06-28 04:16:02,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:02,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434426032] [2024-06-28 04:16:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:02,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:02,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:02,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434426032] [2024-06-28 04:16:02,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434426032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:02,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:02,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:02,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916358116] [2024-06-28 04:16:02,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:02,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:02,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:02,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:02,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:02,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:02,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 247 transitions, 3118 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:02,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:02,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:02,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:03,433 INFO L124 PetriNetUnfolderBase]: 2590/3895 cut-off events. [2024-06-28 04:16:03,434 INFO L125 PetriNetUnfolderBase]: For 195558/195558 co-relation queries the response was YES. [2024-06-28 04:16:03,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28975 conditions, 3895 events. 2590/3895 cut-off events. For 195558/195558 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 19684 event pairs, 595 based on Foata normal form. 4/3897 useless extension candidates. Maximal degree in co-relation 28878. Up to 3709 conditions per place. [2024-06-28 04:16:03,469 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 230 selfloop transitions, 38 changer transitions 0/271 dead transitions. [2024-06-28 04:16:03,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 271 transitions, 3812 flow [2024-06-28 04:16:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:16:03,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:16:03,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 04:16:03,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 04:16:03,470 INFO L175 Difference]: Start difference. First operand has 198 places, 247 transitions, 3118 flow. Second operand 7 states and 119 transitions. [2024-06-28 04:16:03,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 271 transitions, 3812 flow [2024-06-28 04:16:03,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 271 transitions, 3726 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 04:16:03,799 INFO L231 Difference]: Finished difference. Result has 199 places, 247 transitions, 3122 flow [2024-06-28 04:16:03,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3032, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3122, PETRI_PLACES=199, PETRI_TRANSITIONS=247} [2024-06-28 04:16:03,800 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 159 predicate places. [2024-06-28 04:16:03,800 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 247 transitions, 3122 flow [2024-06-28 04:16:03,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:03,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:03,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:03,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 04:16:03,800 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:03,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1261244285, now seen corresponding path program 6 times [2024-06-28 04:16:03,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:03,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139875797] [2024-06-28 04:16:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:03,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:04,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:04,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139875797] [2024-06-28 04:16:04,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139875797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:04,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:04,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:16:04,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508492008] [2024-06-28 04:16:04,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:04,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:16:04,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:04,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:16:04,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:16:04,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:04,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 247 transitions, 3122 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:04,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:04,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:04,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:04,946 INFO L124 PetriNetUnfolderBase]: 2580/3881 cut-off events. [2024-06-28 04:16:04,946 INFO L125 PetriNetUnfolderBase]: For 200175/200175 co-relation queries the response was YES. [2024-06-28 04:16:04,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29059 conditions, 3881 events. 2580/3881 cut-off events. For 200175/200175 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19550 event pairs, 694 based on Foata normal form. 2/3881 useless extension candidates. Maximal degree in co-relation 28962. Up to 3830 conditions per place. [2024-06-28 04:16:04,983 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 239 selfloop transitions, 20 changer transitions 0/262 dead transitions. [2024-06-28 04:16:04,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 262 transitions, 3682 flow [2024-06-28 04:16:04,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:16:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:16:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-28 04:16:04,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 04:16:04,984 INFO L175 Difference]: Start difference. First operand has 199 places, 247 transitions, 3122 flow. Second operand 6 states and 96 transitions. [2024-06-28 04:16:04,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 262 transitions, 3682 flow [2024-06-28 04:16:05,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 262 transitions, 3599 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:05,212 INFO L231 Difference]: Finished difference. Result has 200 places, 247 transitions, 3089 flow [2024-06-28 04:16:05,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3039, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3089, PETRI_PLACES=200, PETRI_TRANSITIONS=247} [2024-06-28 04:16:05,213 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 160 predicate places. [2024-06-28 04:16:05,213 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 247 transitions, 3089 flow [2024-06-28 04:16:05,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:05,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:05,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:05,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 04:16:05,213 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:05,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:05,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1254987183, now seen corresponding path program 4 times [2024-06-28 04:16:05,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:05,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619947410] [2024-06-28 04:16:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:05,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:05,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:05,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619947410] [2024-06-28 04:16:05,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619947410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:05,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:05,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:05,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745017738] [2024-06-28 04:16:05,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:05,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:05,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:05,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:05,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 247 transitions, 3089 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:05,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:05,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:05,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:06,593 INFO L124 PetriNetUnfolderBase]: 2687/4030 cut-off events. [2024-06-28 04:16:06,594 INFO L125 PetriNetUnfolderBase]: For 213433/213433 co-relation queries the response was YES. [2024-06-28 04:16:06,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30318 conditions, 4030 events. 2687/4030 cut-off events. For 213433/213433 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20350 event pairs, 703 based on Foata normal form. 6/4034 useless extension candidates. Maximal degree in co-relation 30221. Up to 3872 conditions per place. [2024-06-28 04:16:06,636 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 234 selfloop transitions, 42 changer transitions 0/279 dead transitions. [2024-06-28 04:16:06,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 279 transitions, 3971 flow [2024-06-28 04:16:06,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:16:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:16:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 04:16:06,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351981351981352 [2024-06-28 04:16:06,638 INFO L175 Difference]: Start difference. First operand has 200 places, 247 transitions, 3089 flow. Second operand 11 states and 151 transitions. [2024-06-28 04:16:06,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 279 transitions, 3971 flow [2024-06-28 04:16:06,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 279 transitions, 3879 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 04:16:06,900 INFO L231 Difference]: Finished difference. Result has 206 places, 260 transitions, 3305 flow [2024-06-28 04:16:06,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3305, PETRI_PLACES=206, PETRI_TRANSITIONS=260} [2024-06-28 04:16:06,900 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 166 predicate places. [2024-06-28 04:16:06,900 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 260 transitions, 3305 flow [2024-06-28 04:16:06,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:06,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:06,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:06,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 04:16:06,901 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:06,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:06,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1315023771, now seen corresponding path program 5 times [2024-06-28 04:16:06,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:06,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66616076] [2024-06-28 04:16:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:06,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:07,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:07,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66616076] [2024-06-28 04:16:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66616076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:07,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:07,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:07,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285630368] [2024-06-28 04:16:07,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:07,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:07,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:07,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:07,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:07,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 260 transitions, 3305 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:07,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:07,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:07,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:08,423 INFO L124 PetriNetUnfolderBase]: 3093/4590 cut-off events. [2024-06-28 04:16:08,423 INFO L125 PetriNetUnfolderBase]: For 277460/277460 co-relation queries the response was YES. [2024-06-28 04:16:08,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37565 conditions, 4590 events. 3093/4590 cut-off events. For 277460/277460 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 23437 event pairs, 646 based on Foata normal form. 6/4594 useless extension candidates. Maximal degree in co-relation 37465. Up to 3682 conditions per place. [2024-06-28 04:16:08,470 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 222 selfloop transitions, 89 changer transitions 0/314 dead transitions. [2024-06-28 04:16:08,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 314 transitions, 4656 flow [2024-06-28 04:16:08,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:16:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:16:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 04:16:08,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-06-28 04:16:08,472 INFO L175 Difference]: Start difference. First operand has 206 places, 260 transitions, 3305 flow. Second operand 8 states and 141 transitions. [2024-06-28 04:16:08,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 314 transitions, 4656 flow [2024-06-28 04:16:08,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 314 transitions, 4500 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 04:16:08,990 INFO L231 Difference]: Finished difference. Result has 208 places, 282 transitions, 3800 flow [2024-06-28 04:16:08,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3149, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3800, PETRI_PLACES=208, PETRI_TRANSITIONS=282} [2024-06-28 04:16:08,990 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 168 predicate places. [2024-06-28 04:16:08,991 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 282 transitions, 3800 flow [2024-06-28 04:16:08,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:08,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:08,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:08,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 04:16:08,992 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:08,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:08,992 INFO L85 PathProgramCache]: Analyzing trace with hash -435793273, now seen corresponding path program 3 times [2024-06-28 04:16:08,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:08,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061265231] [2024-06-28 04:16:08,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:08,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:09,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:09,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:09,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061265231] [2024-06-28 04:16:09,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061265231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:09,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:09,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:09,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951639855] [2024-06-28 04:16:09,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:09,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:09,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:09,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:09,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:09,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:09,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 282 transitions, 3800 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:09,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:09,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:09,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:10,630 INFO L124 PetriNetUnfolderBase]: 3077/4571 cut-off events. [2024-06-28 04:16:10,630 INFO L125 PetriNetUnfolderBase]: For 288077/288077 co-relation queries the response was YES. [2024-06-28 04:16:10,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38312 conditions, 4571 events. 3077/4571 cut-off events. For 288077/288077 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 23381 event pairs, 620 based on Foata normal form. 10/4579 useless extension candidates. Maximal degree in co-relation 38212. Up to 3856 conditions per place. [2024-06-28 04:16:10,676 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 231 selfloop transitions, 106 changer transitions 0/340 dead transitions. [2024-06-28 04:16:10,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 340 transitions, 5187 flow [2024-06-28 04:16:10,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:16:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:16:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 04:16:10,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-06-28 04:16:10,677 INFO L175 Difference]: Start difference. First operand has 208 places, 282 transitions, 3800 flow. Second operand 8 states and 154 transitions. [2024-06-28 04:16:10,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 340 transitions, 5187 flow [2024-06-28 04:16:11,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 340 transitions, 4983 flow, removed 85 selfloop flow, removed 3 redundant places. [2024-06-28 04:16:11,145 INFO L231 Difference]: Finished difference. Result has 215 places, 297 transitions, 4296 flow [2024-06-28 04:16:11,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4296, PETRI_PLACES=215, PETRI_TRANSITIONS=297} [2024-06-28 04:16:11,146 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 175 predicate places. [2024-06-28 04:16:11,146 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 297 transitions, 4296 flow [2024-06-28 04:16:11,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:11,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:11,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:11,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 04:16:11,147 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:11,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:11,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1266961863, now seen corresponding path program 6 times [2024-06-28 04:16:11,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:11,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233056876] [2024-06-28 04:16:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:11,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:11,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:11,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233056876] [2024-06-28 04:16:11,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233056876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:11,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:11,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:11,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385382735] [2024-06-28 04:16:11,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:11,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:11,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:11,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:11,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:11,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:11,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 297 transitions, 4296 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:11,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:11,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:11,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:12,677 INFO L124 PetriNetUnfolderBase]: 3047/4532 cut-off events. [2024-06-28 04:16:12,677 INFO L125 PetriNetUnfolderBase]: For 287580/287580 co-relation queries the response was YES. [2024-06-28 04:16:12,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38318 conditions, 4532 events. 3047/4532 cut-off events. For 287580/287580 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 23184 event pairs, 615 based on Foata normal form. 12/4542 useless extension candidates. Maximal degree in co-relation 38214. Up to 3669 conditions per place. [2024-06-28 04:16:12,831 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 217 selfloop transitions, 114 changer transitions 0/334 dead transitions. [2024-06-28 04:16:12,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 334 transitions, 5329 flow [2024-06-28 04:16:12,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:16:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:16:12,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 04:16:12,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-28 04:16:12,832 INFO L175 Difference]: Start difference. First operand has 215 places, 297 transitions, 4296 flow. Second operand 8 states and 149 transitions. [2024-06-28 04:16:12,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 334 transitions, 5329 flow [2024-06-28 04:16:13,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 334 transitions, 5188 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 04:16:13,411 INFO L231 Difference]: Finished difference. Result has 220 places, 299 transitions, 4498 flow [2024-06-28 04:16:13,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4157, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4498, PETRI_PLACES=220, PETRI_TRANSITIONS=299} [2024-06-28 04:16:13,412 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 180 predicate places. [2024-06-28 04:16:13,412 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 299 transitions, 4498 flow [2024-06-28 04:16:13,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:13,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:13,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:13,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 04:16:13,412 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:13,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:13,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1254571101, now seen corresponding path program 1 times [2024-06-28 04:16:13,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:13,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375142613] [2024-06-28 04:16:13,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:13,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:14,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:14,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375142613] [2024-06-28 04:16:14,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375142613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:14,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:14,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:14,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825634982] [2024-06-28 04:16:14,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:14,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:14,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:14,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:14,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:14,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:14,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 299 transitions, 4498 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:14,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:14,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:14,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:15,021 INFO L124 PetriNetUnfolderBase]: 3044/4528 cut-off events. [2024-06-28 04:16:15,021 INFO L125 PetriNetUnfolderBase]: For 283450/283450 co-relation queries the response was YES. [2024-06-28 04:16:15,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38905 conditions, 4528 events. 3044/4528 cut-off events. For 283450/283450 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 23156 event pairs, 807 based on Foata normal form. 1/4527 useless extension candidates. Maximal degree in co-relation 38799. Up to 4498 conditions per place. [2024-06-28 04:16:15,065 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 286 selfloop transitions, 19 changer transitions 0/308 dead transitions. [2024-06-28 04:16:15,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 308 transitions, 5134 flow [2024-06-28 04:16:15,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:16:15,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:16:15,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-28 04:16:15,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3803418803418803 [2024-06-28 04:16:15,067 INFO L175 Difference]: Start difference. First operand has 220 places, 299 transitions, 4498 flow. Second operand 6 states and 89 transitions. [2024-06-28 04:16:15,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 308 transitions, 5134 flow [2024-06-28 04:16:15,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 308 transitions, 4880 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:15,624 INFO L231 Difference]: Finished difference. Result has 221 places, 299 transitions, 4292 flow [2024-06-28 04:16:15,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4292, PETRI_PLACES=221, PETRI_TRANSITIONS=299} [2024-06-28 04:16:15,624 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 181 predicate places. [2024-06-28 04:16:15,624 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 299 transitions, 4292 flow [2024-06-28 04:16:15,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:15,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:15,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:15,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 04:16:15,625 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:15,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:15,626 INFO L85 PathProgramCache]: Analyzing trace with hash 329117345, now seen corresponding path program 1 times [2024-06-28 04:16:15,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:15,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410405741] [2024-06-28 04:16:15,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:15,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:16,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:16,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:16,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410405741] [2024-06-28 04:16:16,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410405741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:16,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:16,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:16,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151690411] [2024-06-28 04:16:16,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:16,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:16,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:16,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:16,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:16,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:16,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 299 transitions, 4292 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:16,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:16,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:16,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:17,377 INFO L124 PetriNetUnfolderBase]: 3052/4540 cut-off events. [2024-06-28 04:16:17,377 INFO L125 PetriNetUnfolderBase]: For 292674/292674 co-relation queries the response was YES. [2024-06-28 04:16:17,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38256 conditions, 4540 events. 3052/4540 cut-off events. For 292674/292674 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 23195 event pairs, 768 based on Foata normal form. 2/4540 useless extension candidates. Maximal degree in co-relation 38150. Up to 4456 conditions per place. [2024-06-28 04:16:17,423 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 291 selfloop transitions, 27 changer transitions 0/321 dead transitions. [2024-06-28 04:16:17,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 321 transitions, 5140 flow [2024-06-28 04:16:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:16:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:16:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-28 04:16:17,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956043956043956 [2024-06-28 04:16:17,424 INFO L175 Difference]: Start difference. First operand has 221 places, 299 transitions, 4292 flow. Second operand 7 states and 108 transitions. [2024-06-28 04:16:17,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 321 transitions, 5140 flow [2024-06-28 04:16:17,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 321 transitions, 5063 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:17,928 INFO L231 Difference]: Finished difference. Result has 223 places, 303 transitions, 4348 flow [2024-06-28 04:16:17,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4217, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4348, PETRI_PLACES=223, PETRI_TRANSITIONS=303} [2024-06-28 04:16:17,929 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 183 predicate places. [2024-06-28 04:16:17,929 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 303 transitions, 4348 flow [2024-06-28 04:16:17,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:17,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:17,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:17,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 04:16:17,929 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:17,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:17,930 INFO L85 PathProgramCache]: Analyzing trace with hash 329177795, now seen corresponding path program 2 times [2024-06-28 04:16:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:17,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758132914] [2024-06-28 04:16:17,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:17,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:18,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:18,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758132914] [2024-06-28 04:16:18,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758132914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:18,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:18,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:18,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112001113] [2024-06-28 04:16:18,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:18,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:18,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:18,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:18,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:18,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:18,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 303 transitions, 4348 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:18,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:18,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:18,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:19,838 INFO L124 PetriNetUnfolderBase]: 3060/4552 cut-off events. [2024-06-28 04:16:19,838 INFO L125 PetriNetUnfolderBase]: For 293523/293523 co-relation queries the response was YES. [2024-06-28 04:16:19,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38417 conditions, 4552 events. 3060/4552 cut-off events. For 293523/293523 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 23327 event pairs, 807 based on Foata normal form. 2/4552 useless extension candidates. Maximal degree in co-relation 38310. Up to 4499 conditions per place. [2024-06-28 04:16:19,881 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 290 selfloop transitions, 25 changer transitions 0/318 dead transitions. [2024-06-28 04:16:19,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 318 transitions, 5048 flow [2024-06-28 04:16:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:16:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:16:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-28 04:16:19,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:16:19,883 INFO L175 Difference]: Start difference. First operand has 223 places, 303 transitions, 4348 flow. Second operand 7 states and 104 transitions. [2024-06-28 04:16:19,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 318 transitions, 5048 flow [2024-06-28 04:16:20,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 318 transitions, 4958 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 04:16:20,405 INFO L231 Difference]: Finished difference. Result has 227 places, 305 transitions, 4355 flow [2024-06-28 04:16:20,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4276, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4355, PETRI_PLACES=227, PETRI_TRANSITIONS=305} [2024-06-28 04:16:20,405 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 187 predicate places. [2024-06-28 04:16:20,405 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 305 transitions, 4355 flow [2024-06-28 04:16:20,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:20,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:20,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:20,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 04:16:20,406 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:20,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:20,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1261236349, now seen corresponding path program 3 times [2024-06-28 04:16:20,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:20,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458945048] [2024-06-28 04:16:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:20,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:21,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:21,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458945048] [2024-06-28 04:16:21,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458945048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:21,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:21,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:21,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775329725] [2024-06-28 04:16:21,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:21,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:21,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:21,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:21,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:21,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:21,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 305 transitions, 4355 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:21,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:21,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:21,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:22,084 INFO L124 PetriNetUnfolderBase]: 3055/4545 cut-off events. [2024-06-28 04:16:22,084 INFO L125 PetriNetUnfolderBase]: For 301630/301630 co-relation queries the response was YES. [2024-06-28 04:16:22,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38418 conditions, 4545 events. 3055/4545 cut-off events. For 301630/301630 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 23205 event pairs, 755 based on Foata normal form. 2/4545 useless extension candidates. Maximal degree in co-relation 38309. Up to 4482 conditions per place. [2024-06-28 04:16:22,132 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 295 selfloop transitions, 22 changer transitions 0/320 dead transitions. [2024-06-28 04:16:22,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 320 transitions, 5027 flow [2024-06-28 04:16:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:16:22,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:16:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-28 04:16:22,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 04:16:22,133 INFO L175 Difference]: Start difference. First operand has 227 places, 305 transitions, 4355 flow. Second operand 6 states and 96 transitions. [2024-06-28 04:16:22,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 320 transitions, 5027 flow [2024-06-28 04:16:22,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 320 transitions, 4958 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:22,629 INFO L231 Difference]: Finished difference. Result has 228 places, 305 transitions, 4338 flow [2024-06-28 04:16:22,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4286, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4338, PETRI_PLACES=228, PETRI_TRANSITIONS=305} [2024-06-28 04:16:22,630 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 188 predicate places. [2024-06-28 04:16:22,630 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 305 transitions, 4338 flow [2024-06-28 04:16:22,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:22,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:22,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:22,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 04:16:22,631 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:22,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:22,632 INFO L85 PathProgramCache]: Analyzing trace with hash -647157373, now seen corresponding path program 1 times [2024-06-28 04:16:22,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:22,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494619873] [2024-06-28 04:16:22,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:22,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:23,210 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 04:16:23,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:23,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494619873] [2024-06-28 04:16:23,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494619873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:23,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:23,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:23,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436242523] [2024-06-28 04:16:23,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:23,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:23,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:23,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:23,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:23,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:23,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 305 transitions, 4338 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:23,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:23,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:23,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:24,108 INFO L124 PetriNetUnfolderBase]: 3049/4538 cut-off events. [2024-06-28 04:16:24,108 INFO L125 PetriNetUnfolderBase]: For 308762/308764 co-relation queries the response was YES. [2024-06-28 04:16:24,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38441 conditions, 4538 events. 3049/4538 cut-off events. For 308762/308764 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 23235 event pairs, 612 based on Foata normal form. 4/4540 useless extension candidates. Maximal degree in co-relation 38331. Up to 4262 conditions per place. [2024-06-28 04:16:24,159 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 262 selfloop transitions, 67 changer transitions 0/332 dead transitions. [2024-06-28 04:16:24,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 332 transitions, 5194 flow [2024-06-28 04:16:24,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:16:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:16:24,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 04:16:24,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42628205128205127 [2024-06-28 04:16:24,160 INFO L175 Difference]: Start difference. First operand has 228 places, 305 transitions, 4338 flow. Second operand 8 states and 133 transitions. [2024-06-28 04:16:24,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 332 transitions, 5194 flow [2024-06-28 04:16:24,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 332 transitions, 5131 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:24,642 INFO L231 Difference]: Finished difference. Result has 231 places, 305 transitions, 4415 flow [2024-06-28 04:16:24,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4275, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4415, PETRI_PLACES=231, PETRI_TRANSITIONS=305} [2024-06-28 04:16:24,642 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 191 predicate places. [2024-06-28 04:16:24,642 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 305 transitions, 4415 flow [2024-06-28 04:16:24,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:24,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:24,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:24,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 04:16:24,643 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:24,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:24,643 INFO L85 PathProgramCache]: Analyzing trace with hash -654778909, now seen corresponding path program 1 times [2024-06-28 04:16:24,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:24,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808081850] [2024-06-28 04:16:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:24,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:25,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:25,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808081850] [2024-06-28 04:16:25,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808081850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:25,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:25,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:25,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137413619] [2024-06-28 04:16:25,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:25,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:25,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:25,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:25,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:25,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 305 transitions, 4415 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:25,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:25,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:25,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:26,670 INFO L124 PetriNetUnfolderBase]: 3475/5192 cut-off events. [2024-06-28 04:16:26,670 INFO L125 PetriNetUnfolderBase]: For 435595/435597 co-relation queries the response was YES. [2024-06-28 04:16:26,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45670 conditions, 5192 events. 3475/5192 cut-off events. For 435595/435597 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 27045 event pairs, 599 based on Foata normal form. 12/5202 useless extension candidates. Maximal degree in co-relation 45559. Up to 3042 conditions per place. [2024-06-28 04:16:26,725 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 205 selfloop transitions, 176 changer transitions 0/384 dead transitions. [2024-06-28 04:16:26,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 384 transitions, 6230 flow [2024-06-28 04:16:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:16:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:16:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 04:16:26,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2024-06-28 04:16:26,727 INFO L175 Difference]: Start difference. First operand has 231 places, 305 transitions, 4415 flow. Second operand 9 states and 177 transitions. [2024-06-28 04:16:26,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 384 transitions, 6230 flow [2024-06-28 04:16:27,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 384 transitions, 6027 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 04:16:27,393 INFO L231 Difference]: Finished difference. Result has 235 places, 324 transitions, 5149 flow [2024-06-28 04:16:27,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4212, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5149, PETRI_PLACES=235, PETRI_TRANSITIONS=324} [2024-06-28 04:16:27,394 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 195 predicate places. [2024-06-28 04:16:27,394 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 324 transitions, 5149 flow [2024-06-28 04:16:27,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:27,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:27,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:27,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 04:16:27,395 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:27,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:27,395 INFO L85 PathProgramCache]: Analyzing trace with hash -654569659, now seen corresponding path program 2 times [2024-06-28 04:16:27,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:27,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452316100] [2024-06-28 04:16:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:27,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:28,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:28,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452316100] [2024-06-28 04:16:28,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452316100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:28,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:28,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:28,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975833386] [2024-06-28 04:16:28,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:28,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:28,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:28,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:28,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:28,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:28,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 324 transitions, 5149 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:28,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:28,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:28,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:29,384 INFO L124 PetriNetUnfolderBase]: 3539/5288 cut-off events. [2024-06-28 04:16:29,384 INFO L125 PetriNetUnfolderBase]: For 461045/461047 co-relation queries the response was YES. [2024-06-28 04:16:29,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48848 conditions, 5288 events. 3539/5288 cut-off events. For 461045/461047 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 27857 event pairs, 678 based on Foata normal form. 13/5299 useless extension candidates. Maximal degree in co-relation 48734. Up to 3963 conditions per place. [2024-06-28 04:16:29,449 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 198 selfloop transitions, 181 changer transitions 0/382 dead transitions. [2024-06-28 04:16:29,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 382 transitions, 6634 flow [2024-06-28 04:16:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:16:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:16:29,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 04:16:29,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-28 04:16:29,451 INFO L175 Difference]: Start difference. First operand has 235 places, 324 transitions, 5149 flow. Second operand 9 states and 168 transitions. [2024-06-28 04:16:29,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 382 transitions, 6634 flow [2024-06-28 04:16:30,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 382 transitions, 6532 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-06-28 04:16:30,263 INFO L231 Difference]: Finished difference. Result has 243 places, 333 transitions, 5575 flow [2024-06-28 04:16:30,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5061, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5575, PETRI_PLACES=243, PETRI_TRANSITIONS=333} [2024-06-28 04:16:30,264 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 203 predicate places. [2024-06-28 04:16:30,264 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 333 transitions, 5575 flow [2024-06-28 04:16:30,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:30,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:30,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:30,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 04:16:30,264 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:30,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1454175198, now seen corresponding path program 1 times [2024-06-28 04:16:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:30,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491760077] [2024-06-28 04:16:30,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:30,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:31,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491760077] [2024-06-28 04:16:31,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491760077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:31,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:31,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:16:31,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682672607] [2024-06-28 04:16:31,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:31,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:16:31,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:31,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:16:31,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:16:31,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:31,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 333 transitions, 5575 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:31,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:31,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:31,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:32,235 INFO L124 PetriNetUnfolderBase]: 3525/5270 cut-off events. [2024-06-28 04:16:32,236 INFO L125 PetriNetUnfolderBase]: For 472229/472231 co-relation queries the response was YES. [2024-06-28 04:16:32,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49667 conditions, 5270 events. 3525/5270 cut-off events. For 472229/472231 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 27640 event pairs, 724 based on Foata normal form. 6/5274 useless extension candidates. Maximal degree in co-relation 49550. Up to 4286 conditions per place. [2024-06-28 04:16:32,300 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 232 selfloop transitions, 141 changer transitions 0/376 dead transitions. [2024-06-28 04:16:32,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 376 transitions, 6933 flow [2024-06-28 04:16:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:16:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:16:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 04:16:32,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45014245014245013 [2024-06-28 04:16:32,301 INFO L175 Difference]: Start difference. First operand has 243 places, 333 transitions, 5575 flow. Second operand 9 states and 158 transitions. [2024-06-28 04:16:32,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 376 transitions, 6933 flow [2024-06-28 04:16:33,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 376 transitions, 6621 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:33,130 INFO L231 Difference]: Finished difference. Result has 247 places, 336 transitions, 5616 flow [2024-06-28 04:16:33,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5268, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5616, PETRI_PLACES=247, PETRI_TRANSITIONS=336} [2024-06-28 04:16:33,131 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 207 predicate places. [2024-06-28 04:16:33,131 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 336 transitions, 5616 flow [2024-06-28 04:16:33,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:33,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:33,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:33,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 04:16:33,131 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:33,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:33,132 INFO L85 PathProgramCache]: Analyzing trace with hash -647160349, now seen corresponding path program 3 times [2024-06-28 04:16:33,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:33,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637578152] [2024-06-28 04:16:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:34,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:34,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637578152] [2024-06-28 04:16:34,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637578152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:34,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:34,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:34,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148181709] [2024-06-28 04:16:34,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:34,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:34,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:34,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:34,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:34,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 336 transitions, 5616 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:34,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:34,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:34,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:35,257 INFO L124 PetriNetUnfolderBase]: 3597/5382 cut-off events. [2024-06-28 04:16:35,257 INFO L125 PetriNetUnfolderBase]: For 512186/512188 co-relation queries the response was YES. [2024-06-28 04:16:35,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50569 conditions, 5382 events. 3597/5382 cut-off events. For 512186/512188 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 28393 event pairs, 802 based on Foata normal form. 22/5402 useless extension candidates. Maximal degree in co-relation 50451. Up to 5017 conditions per place. [2024-06-28 04:16:35,321 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 296 selfloop transitions, 74 changer transitions 0/373 dead transitions. [2024-06-28 04:16:35,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 373 transitions, 6704 flow [2024-06-28 04:16:35,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:16:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:16:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 04:16:35,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-06-28 04:16:35,322 INFO L175 Difference]: Start difference. First operand has 247 places, 336 transitions, 5616 flow. Second operand 9 states and 150 transitions. [2024-06-28 04:16:35,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 373 transitions, 6704 flow [2024-06-28 04:16:36,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 373 transitions, 6327 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 04:16:36,097 INFO L231 Difference]: Finished difference. Result has 250 places, 339 transitions, 5473 flow [2024-06-28 04:16:36,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5239, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5473, PETRI_PLACES=250, PETRI_TRANSITIONS=339} [2024-06-28 04:16:36,098 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 210 predicate places. [2024-06-28 04:16:36,098 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 339 transitions, 5473 flow [2024-06-28 04:16:36,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:36,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:36,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:36,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 04:16:36,099 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:36,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:36,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1343383461, now seen corresponding path program 2 times [2024-06-28 04:16:36,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:36,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170362881] [2024-06-28 04:16:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:36,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:36,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:36,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170362881] [2024-06-28 04:16:36,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170362881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:36,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:36,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:36,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959784169] [2024-06-28 04:16:36,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:36,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:36,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:36,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:36,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:36,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:36,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 339 transitions, 5473 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:36,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:36,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:36,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:37,785 INFO L124 PetriNetUnfolderBase]: 3607/5396 cut-off events. [2024-06-28 04:16:37,785 INFO L125 PetriNetUnfolderBase]: For 494756/494758 co-relation queries the response was YES. [2024-06-28 04:16:37,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50420 conditions, 5396 events. 3607/5396 cut-off events. For 494756/494758 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 28431 event pairs, 819 based on Foata normal form. 4/5398 useless extension candidates. Maximal degree in co-relation 50301. Up to 5116 conditions per place. [2024-06-28 04:16:37,847 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 297 selfloop transitions, 66 changer transitions 0/366 dead transitions. [2024-06-28 04:16:37,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 366 transitions, 6464 flow [2024-06-28 04:16:37,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:16:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:16:37,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 04:16:37,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:16:37,848 INFO L175 Difference]: Start difference. First operand has 250 places, 339 transitions, 5473 flow. Second operand 8 states and 130 transitions. [2024-06-28 04:16:37,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 366 transitions, 6464 flow [2024-06-28 04:16:38,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 366 transitions, 6283 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 04:16:38,710 INFO L231 Difference]: Finished difference. Result has 252 places, 342 transitions, 5495 flow [2024-06-28 04:16:38,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5298, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5495, PETRI_PLACES=252, PETRI_TRANSITIONS=342} [2024-06-28 04:16:38,710 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 212 predicate places. [2024-06-28 04:16:38,711 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 342 transitions, 5495 flow [2024-06-28 04:16:38,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:38,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:38,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:38,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 04:16:38,711 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:38,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:38,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1343383120, now seen corresponding path program 1 times [2024-06-28 04:16:38,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:38,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12682247] [2024-06-28 04:16:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:38,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:39,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:39,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12682247] [2024-06-28 04:16:39,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12682247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:39,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:39,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:39,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983732314] [2024-06-28 04:16:39,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:39,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:39,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:39,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:39,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:39,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:39,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 342 transitions, 5495 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:39,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:39,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:39,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:40,410 INFO L124 PetriNetUnfolderBase]: 3803/5668 cut-off events. [2024-06-28 04:16:40,410 INFO L125 PetriNetUnfolderBase]: For 561316/561318 co-relation queries the response was YES. [2024-06-28 04:16:40,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53837 conditions, 5668 events. 3803/5668 cut-off events. For 561316/561318 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 29991 event pairs, 794 based on Foata normal form. 12/5678 useless extension candidates. Maximal degree in co-relation 53717. Up to 3825 conditions per place. [2024-06-28 04:16:40,475 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 198 selfloop transitions, 198 changer transitions 0/399 dead transitions. [2024-06-28 04:16:40,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 399 transitions, 7357 flow [2024-06-28 04:16:40,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:16:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:16:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 04:16:40,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-28 04:16:40,476 INFO L175 Difference]: Start difference. First operand has 252 places, 342 transitions, 5495 flow. Second operand 8 states and 147 transitions. [2024-06-28 04:16:40,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 399 transitions, 7357 flow [2024-06-28 04:16:41,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 399 transitions, 7234 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:41,465 INFO L231 Difference]: Finished difference. Result has 257 places, 364 transitions, 6390 flow [2024-06-28 04:16:41,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5372, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6390, PETRI_PLACES=257, PETRI_TRANSITIONS=364} [2024-06-28 04:16:41,466 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 217 predicate places. [2024-06-28 04:16:41,466 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 364 transitions, 6390 flow [2024-06-28 04:16:41,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:41,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:41,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:41,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 04:16:41,467 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:41,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1195773520, now seen corresponding path program 2 times [2024-06-28 04:16:41,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:41,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677498644] [2024-06-28 04:16:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:41,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:42,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:42,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677498644] [2024-06-28 04:16:42,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677498644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:42,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:42,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:42,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90893118] [2024-06-28 04:16:42,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:42,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:42,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:42,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:42,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:42,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 364 transitions, 6390 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:42,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:42,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:42,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:43,387 INFO L124 PetriNetUnfolderBase]: 4228/6264 cut-off events. [2024-06-28 04:16:43,387 INFO L125 PetriNetUnfolderBase]: For 621670/621670 co-relation queries the response was YES. [2024-06-28 04:16:43,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61308 conditions, 6264 events. 4228/6264 cut-off events. For 621670/621670 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 33419 event pairs, 1163 based on Foata normal form. 12/6274 useless extension candidates. Maximal degree in co-relation 61185. Up to 5846 conditions per place. [2024-06-28 04:16:43,465 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 369 selfloop transitions, 71 changer transitions 0/443 dead transitions. [2024-06-28 04:16:43,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 443 transitions, 8429 flow [2024-06-28 04:16:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:16:43,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:16:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 04:16:43,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39487179487179486 [2024-06-28 04:16:43,466 INFO L175 Difference]: Start difference. First operand has 257 places, 364 transitions, 6390 flow. Second operand 10 states and 154 transitions. [2024-06-28 04:16:43,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 443 transitions, 8429 flow [2024-06-28 04:16:44,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 443 transitions, 7915 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-28 04:16:44,586 INFO L231 Difference]: Finished difference. Result has 267 places, 411 transitions, 7003 flow [2024-06-28 04:16:44,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5931, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7003, PETRI_PLACES=267, PETRI_TRANSITIONS=411} [2024-06-28 04:16:44,587 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 227 predicate places. [2024-06-28 04:16:44,587 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 411 transitions, 7003 flow [2024-06-28 04:16:44,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:44,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:44,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:44,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 04:16:44,587 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:44,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1195566130, now seen corresponding path program 3 times [2024-06-28 04:16:44,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:44,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019150182] [2024-06-28 04:16:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:44,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:45,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:45,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019150182] [2024-06-28 04:16:45,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019150182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:45,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:45,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:45,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790888131] [2024-06-28 04:16:45,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:45,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:45,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:45,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:45,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:45,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:45,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 411 transitions, 7003 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:45,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:45,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:45,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:46,660 INFO L124 PetriNetUnfolderBase]: 4176/6192 cut-off events. [2024-06-28 04:16:46,661 INFO L125 PetriNetUnfolderBase]: For 615321/615321 co-relation queries the response was YES. [2024-06-28 04:16:46,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59268 conditions, 6192 events. 4176/6192 cut-off events. For 615321/615321 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 32970 event pairs, 1139 based on Foata normal form. 12/6202 useless extension candidates. Maximal degree in co-relation 59140. Up to 5818 conditions per place. [2024-06-28 04:16:46,741 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 369 selfloop transitions, 72 changer transitions 0/444 dead transitions. [2024-06-28 04:16:46,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 444 transitions, 8228 flow [2024-06-28 04:16:46,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:16:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:16:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-28 04:16:46,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 04:16:46,742 INFO L175 Difference]: Start difference. First operand has 267 places, 411 transitions, 7003 flow. Second operand 11 states and 165 transitions. [2024-06-28 04:16:46,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 444 transitions, 8228 flow [2024-06-28 04:16:47,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 444 transitions, 8165 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 04:16:47,972 INFO L231 Difference]: Finished difference. Result has 277 places, 417 transitions, 7253 flow [2024-06-28 04:16:47,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6940, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7253, PETRI_PLACES=277, PETRI_TRANSITIONS=417} [2024-06-28 04:16:47,973 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2024-06-28 04:16:47,974 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 417 transitions, 7253 flow [2024-06-28 04:16:47,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:47,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:47,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:47,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 04:16:47,974 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:47,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:47,975 INFO L85 PathProgramCache]: Analyzing trace with hash -388872379, now seen corresponding path program 4 times [2024-06-28 04:16:47,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:47,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823538297] [2024-06-28 04:16:47,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:47,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:48,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:48,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:48,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823538297] [2024-06-28 04:16:48,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823538297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:48,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:48,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:48,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961074671] [2024-06-28 04:16:48,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:48,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:48,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:48,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:48,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:48,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:48,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 417 transitions, 7253 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:48,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:48,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:48,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:50,376 INFO L124 PetriNetUnfolderBase]: 4248/6304 cut-off events. [2024-06-28 04:16:50,376 INFO L125 PetriNetUnfolderBase]: For 655712/655712 co-relation queries the response was YES. [2024-06-28 04:16:50,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60971 conditions, 6304 events. 4248/6304 cut-off events. For 655712/655712 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 33783 event pairs, 1146 based on Foata normal form. 20/6322 useless extension candidates. Maximal degree in co-relation 60838. Up to 6102 conditions per place. [2024-06-28 04:16:50,459 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 396 selfloop transitions, 48 changer transitions 0/447 dead transitions. [2024-06-28 04:16:50,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 447 transitions, 8357 flow [2024-06-28 04:16:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:16:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:16:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 04:16:50,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382051282051282 [2024-06-28 04:16:50,460 INFO L175 Difference]: Start difference. First operand has 277 places, 417 transitions, 7253 flow. Second operand 10 states and 149 transitions. [2024-06-28 04:16:50,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 447 transitions, 8357 flow [2024-06-28 04:16:51,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 447 transitions, 8260 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:51,526 INFO L231 Difference]: Finished difference. Result has 282 places, 420 transitions, 7349 flow [2024-06-28 04:16:51,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7156, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7349, PETRI_PLACES=282, PETRI_TRANSITIONS=420} [2024-06-28 04:16:51,526 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 242 predicate places. [2024-06-28 04:16:51,527 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 420 transitions, 7349 flow [2024-06-28 04:16:51,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:51,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:51,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:51,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 04:16:51,527 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:51,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:51,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1195558194, now seen corresponding path program 1 times [2024-06-28 04:16:51,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:51,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860124427] [2024-06-28 04:16:51,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:51,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:52,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:52,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860124427] [2024-06-28 04:16:52,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860124427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:52,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:52,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:16:52,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448944655] [2024-06-28 04:16:52,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:52,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:16:52,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:52,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:16:52,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:16:52,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:52,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 420 transitions, 7349 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:52,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:52,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:52,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:53,755 INFO L124 PetriNetUnfolderBase]: 4256/6316 cut-off events. [2024-06-28 04:16:53,755 INFO L125 PetriNetUnfolderBase]: For 637165/637165 co-relation queries the response was YES. [2024-06-28 04:16:53,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61385 conditions, 6316 events. 4256/6316 cut-off events. For 637165/637165 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 33847 event pairs, 1102 based on Foata normal form. 2/6316 useless extension candidates. Maximal degree in co-relation 61251. Up to 6229 conditions per place. [2024-06-28 04:16:53,833 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 395 selfloop transitions, 43 changer transitions 0/441 dead transitions. [2024-06-28 04:16:53,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 441 transitions, 8321 flow [2024-06-28 04:16:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:16:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:16:53,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 04:16:53,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38782051282051283 [2024-06-28 04:16:53,834 INFO L175 Difference]: Start difference. First operand has 282 places, 420 transitions, 7349 flow. Second operand 8 states and 121 transitions. [2024-06-28 04:16:53,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 441 transitions, 8321 flow [2024-06-28 04:16:54,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 441 transitions, 8209 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 04:16:54,917 INFO L231 Difference]: Finished difference. Result has 284 places, 422 transitions, 7373 flow [2024-06-28 04:16:54,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7237, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7373, PETRI_PLACES=284, PETRI_TRANSITIONS=422} [2024-06-28 04:16:54,918 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 244 predicate places. [2024-06-28 04:16:54,918 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 422 transitions, 7373 flow [2024-06-28 04:16:54,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:54,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:54,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:54,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 04:16:54,919 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:54,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:54,919 INFO L85 PathProgramCache]: Analyzing trace with hash -370719558, now seen corresponding path program 4 times [2024-06-28 04:16:54,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:54,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254257187] [2024-06-28 04:16:54,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:54,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:55,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:55,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254257187] [2024-06-28 04:16:55,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254257187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:55,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:55,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455494573] [2024-06-28 04:16:55,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:55,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:55,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:55,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:55,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 422 transitions, 7373 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:55,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:55,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:55,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:56,948 INFO L124 PetriNetUnfolderBase]: 4288/6361 cut-off events. [2024-06-28 04:16:56,948 INFO L125 PetriNetUnfolderBase]: For 664498/664498 co-relation queries the response was YES. [2024-06-28 04:16:57,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62010 conditions, 6361 events. 4288/6361 cut-off events. For 664498/664498 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34180 event pairs, 1195 based on Foata normal form. 4/6363 useless extension candidates. Maximal degree in co-relation 61875. Up to 6064 conditions per place. [2024-06-28 04:16:57,028 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 388 selfloop transitions, 64 changer transitions 0/455 dead transitions. [2024-06-28 04:16:57,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 455 transitions, 8839 flow [2024-06-28 04:16:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:16:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:16:57,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 04:16:57,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:16:57,030 INFO L175 Difference]: Start difference. First operand has 284 places, 422 transitions, 7373 flow. Second operand 8 states and 130 transitions. [2024-06-28 04:16:57,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 455 transitions, 8839 flow [2024-06-28 04:16:58,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 455 transitions, 8721 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 04:16:58,266 INFO L231 Difference]: Finished difference. Result has 287 places, 428 transitions, 7562 flow [2024-06-28 04:16:58,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7255, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7562, PETRI_PLACES=287, PETRI_TRANSITIONS=428} [2024-06-28 04:16:58,267 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 247 predicate places. [2024-06-28 04:16:58,267 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 428 transitions, 7562 flow [2024-06-28 04:16:58,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:58,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:58,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:58,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 04:16:58,268 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:58,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:58,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1376282715, now seen corresponding path program 3 times [2024-06-28 04:16:58,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:58,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814202589] [2024-06-28 04:16:58,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:58,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:58,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:58,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814202589] [2024-06-28 04:16:58,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814202589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:58,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:58,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:58,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954803806] [2024-06-28 04:16:58,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:58,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:58,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:58,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:58,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:58,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:16:58,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 428 transitions, 7562 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:58,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:58,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:16:58,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:00,352 INFO L124 PetriNetUnfolderBase]: 4298/6375 cut-off events. [2024-06-28 04:17:00,352 INFO L125 PetriNetUnfolderBase]: For 678559/678559 co-relation queries the response was YES. [2024-06-28 04:17:00,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62620 conditions, 6375 events. 4298/6375 cut-off events. For 678559/678559 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 34226 event pairs, 1223 based on Foata normal form. 2/6375 useless extension candidates. Maximal degree in co-relation 62483. Up to 6297 conditions per place. [2024-06-28 04:17:00,436 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 416 selfloop transitions, 31 changer transitions 0/450 dead transitions. [2024-06-28 04:17:00,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 450 transitions, 8583 flow [2024-06-28 04:17:00,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:17:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:17:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-28 04:17:00,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 04:17:00,437 INFO L175 Difference]: Start difference. First operand has 287 places, 428 transitions, 7562 flow. Second operand 8 states and 120 transitions. [2024-06-28 04:17:00,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 450 transitions, 8583 flow [2024-06-28 04:17:01,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 450 transitions, 8061 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-28 04:17:01,778 INFO L231 Difference]: Finished difference. Result has 288 places, 431 transitions, 7177 flow [2024-06-28 04:17:01,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7041, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7177, PETRI_PLACES=288, PETRI_TRANSITIONS=431} [2024-06-28 04:17:01,779 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 248 predicate places. [2024-06-28 04:17:01,779 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 431 transitions, 7177 flow [2024-06-28 04:17:01,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:01,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:01,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:01,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 04:17:01,779 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:01,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:01,779 INFO L85 PathProgramCache]: Analyzing trace with hash -364553813, now seen corresponding path program 1 times [2024-06-28 04:17:01,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:01,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192577921] [2024-06-28 04:17:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:01,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:02,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:02,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192577921] [2024-06-28 04:17:02,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192577921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:02,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:02,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:17:02,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267517809] [2024-06-28 04:17:02,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:02,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:17:02,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:02,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:17:02,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:17:02,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:02,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 431 transitions, 7177 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:02,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:02,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:02,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:03,802 INFO L124 PetriNetUnfolderBase]: 4291/6365 cut-off events. [2024-06-28 04:17:03,802 INFO L125 PetriNetUnfolderBase]: For 684915/684915 co-relation queries the response was YES. [2024-06-28 04:17:03,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61307 conditions, 6365 events. 4291/6365 cut-off events. For 684915/684915 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34204 event pairs, 1219 based on Foata normal form. 1/6364 useless extension candidates. Maximal degree in co-relation 61171. Up to 6258 conditions per place. [2024-06-28 04:17:03,893 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 407 selfloop transitions, 45 changer transitions 0/455 dead transitions. [2024-06-28 04:17:03,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 455 transitions, 8433 flow [2024-06-28 04:17:03,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:17:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:17:03,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 04:17:03,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40293040293040294 [2024-06-28 04:17:03,894 INFO L175 Difference]: Start difference. First operand has 288 places, 431 transitions, 7177 flow. Second operand 7 states and 110 transitions. [2024-06-28 04:17:03,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 455 transitions, 8433 flow [2024-06-28 04:17:05,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 455 transitions, 8321 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 04:17:05,216 INFO L231 Difference]: Finished difference. Result has 290 places, 437 transitions, 7365 flow [2024-06-28 04:17:05,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7065, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7365, PETRI_PLACES=290, PETRI_TRANSITIONS=437} [2024-06-28 04:17:05,217 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 250 predicate places. [2024-06-28 04:17:05,217 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 437 transitions, 7365 flow [2024-06-28 04:17:05,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:05,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:05,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:05,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 04:17:05,218 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:05,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:05,218 INFO L85 PathProgramCache]: Analyzing trace with hash -582459845, now seen corresponding path program 2 times [2024-06-28 04:17:05,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:05,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688284235] [2024-06-28 04:17:05,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:05,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:05,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:05,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688284235] [2024-06-28 04:17:05,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688284235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:05,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:05,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:17:05,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271313762] [2024-06-28 04:17:05,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:05,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:17:05,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:05,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:17:05,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:17:05,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:05,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 437 transitions, 7365 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:05,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:05,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:05,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:07,523 INFO L124 PetriNetUnfolderBase]: 4288/6361 cut-off events. [2024-06-28 04:17:07,524 INFO L125 PetriNetUnfolderBase]: For 701039/701039 co-relation queries the response was YES. [2024-06-28 04:17:07,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61613 conditions, 6361 events. 4288/6361 cut-off events. For 701039/701039 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34110 event pairs, 1238 based on Foata normal form. 1/6360 useless extension candidates. Maximal degree in co-relation 61475. Up to 6303 conditions per place. [2024-06-28 04:17:07,613 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 418 selfloop transitions, 29 changer transitions 0/450 dead transitions. [2024-06-28 04:17:07,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 450 transitions, 8297 flow [2024-06-28 04:17:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:17:07,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:17:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-28 04:17:07,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 04:17:07,615 INFO L175 Difference]: Start difference. First operand has 290 places, 437 transitions, 7365 flow. Second operand 7 states and 105 transitions. [2024-06-28 04:17:07,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 450 transitions, 8297 flow [2024-06-28 04:17:08,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 450 transitions, 8193 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 04:17:08,987 INFO L231 Difference]: Finished difference. Result has 291 places, 437 transitions, 7329 flow [2024-06-28 04:17:08,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7261, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7329, PETRI_PLACES=291, PETRI_TRANSITIONS=437} [2024-06-28 04:17:08,987 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 251 predicate places. [2024-06-28 04:17:08,987 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 437 transitions, 7329 flow [2024-06-28 04:17:08,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:08,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:08,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:08,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 04:17:08,988 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:08,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:08,988 INFO L85 PathProgramCache]: Analyzing trace with hash -496005030, now seen corresponding path program 5 times [2024-06-28 04:17:08,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:08,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316493820] [2024-06-28 04:17:08,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:08,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:09,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:09,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316493820] [2024-06-28 04:17:09,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316493820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:09,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:09,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:17:09,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703489666] [2024-06-28 04:17:09,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:09,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:17:09,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:09,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:17:09,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:17:09,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:09,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 437 transitions, 7329 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:09,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:09,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:09,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:11,105 INFO L124 PetriNetUnfolderBase]: 4308/6389 cut-off events. [2024-06-28 04:17:11,106 INFO L125 PetriNetUnfolderBase]: For 708248/708248 co-relation queries the response was YES. [2024-06-28 04:17:11,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61807 conditions, 6389 events. 4308/6389 cut-off events. For 708248/708248 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 34262 event pairs, 1236 based on Foata normal form. 4/6391 useless extension candidates. Maximal degree in co-relation 61669. Up to 6228 conditions per place. [2024-06-28 04:17:11,175 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 412 selfloop transitions, 47 changer transitions 0/462 dead transitions. [2024-06-28 04:17:11,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 462 transitions, 8540 flow [2024-06-28 04:17:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:17:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:17:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 04:17:11,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40705128205128205 [2024-06-28 04:17:11,176 INFO L175 Difference]: Start difference. First operand has 291 places, 437 transitions, 7329 flow. Second operand 8 states and 127 transitions. [2024-06-28 04:17:11,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 462 transitions, 8540 flow [2024-06-28 04:17:12,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 462 transitions, 8444 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 04:17:12,387 INFO L231 Difference]: Finished difference. Result has 293 places, 440 transitions, 7405 flow [2024-06-28 04:17:12,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7237, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7405, PETRI_PLACES=293, PETRI_TRANSITIONS=440} [2024-06-28 04:17:12,387 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 253 predicate places. [2024-06-28 04:17:12,388 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 440 transitions, 7405 flow [2024-06-28 04:17:12,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:12,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:12,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:12,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 04:17:12,388 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:12,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:12,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1701410126, now seen corresponding path program 6 times [2024-06-28 04:17:12,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:12,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347558871] [2024-06-28 04:17:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:12,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:12,910 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 04:17:12,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:12,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347558871] [2024-06-28 04:17:12,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347558871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:12,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:12,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:17:12,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112586813] [2024-06-28 04:17:12,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:12,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:17:12,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:12,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:17:12,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:17:12,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:12,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 440 transitions, 7405 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:12,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:12,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:12,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:14,413 INFO L124 PetriNetUnfolderBase]: 4325/6413 cut-off events. [2024-06-28 04:17:14,413 INFO L125 PetriNetUnfolderBase]: For 707278/707278 co-relation queries the response was YES. [2024-06-28 04:17:14,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62032 conditions, 6413 events. 4325/6413 cut-off events. For 707278/707278 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 34448 event pairs, 1238 based on Foata normal form. 4/6415 useless extension candidates. Maximal degree in co-relation 61894. Up to 6288 conditions per place. [2024-06-28 04:17:14,495 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 419 selfloop transitions, 44 changer transitions 0/466 dead transitions. [2024-06-28 04:17:14,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 466 transitions, 8514 flow [2024-06-28 04:17:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:17:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:17:14,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 04:17:14,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-06-28 04:17:14,496 INFO L175 Difference]: Start difference. First operand has 293 places, 440 transitions, 7405 flow. Second operand 8 states and 124 transitions. [2024-06-28 04:17:14,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 466 transitions, 8514 flow [2024-06-28 04:17:15,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 466 transitions, 8349 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 04:17:15,879 INFO L231 Difference]: Finished difference. Result has 297 places, 447 transitions, 7459 flow [2024-06-28 04:17:15,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7266, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7459, PETRI_PLACES=297, PETRI_TRANSITIONS=447} [2024-06-28 04:17:15,879 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 257 predicate places. [2024-06-28 04:17:15,880 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 447 transitions, 7459 flow [2024-06-28 04:17:15,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:15,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:15,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:15,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 04:17:15,880 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:15,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:15,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1701023835, now seen corresponding path program 4 times [2024-06-28 04:17:15,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:15,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832435582] [2024-06-28 04:17:15,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:15,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:16,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:16,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832435582] [2024-06-28 04:17:16,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832435582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:16,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:16,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:17:16,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447107422] [2024-06-28 04:17:16,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:16,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:17:16,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:16,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:17:16,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:17:16,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:16,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 447 transitions, 7459 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:16,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:16,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:16,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:17,927 INFO L124 PetriNetUnfolderBase]: 4319/6405 cut-off events. [2024-06-28 04:17:17,927 INFO L125 PetriNetUnfolderBase]: For 719913/719913 co-relation queries the response was YES. [2024-06-28 04:17:17,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62791 conditions, 6405 events. 4319/6405 cut-off events. For 719913/719913 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 34320 event pairs, 1226 based on Foata normal form. 2/6405 useless extension candidates. Maximal degree in co-relation 62651. Up to 6359 conditions per place. [2024-06-28 04:17:18,005 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 436 selfloop transitions, 23 changer transitions 0/462 dead transitions. [2024-06-28 04:17:18,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 462 transitions, 8429 flow [2024-06-28 04:17:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:17:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:17:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-28 04:17:18,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3685897435897436 [2024-06-28 04:17:18,007 INFO L175 Difference]: Start difference. First operand has 297 places, 447 transitions, 7459 flow. Second operand 8 states and 115 transitions. [2024-06-28 04:17:18,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 462 transitions, 8429 flow [2024-06-28 04:17:19,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 462 transitions, 8309 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 04:17:19,448 INFO L231 Difference]: Finished difference. Result has 301 places, 447 transitions, 7391 flow [2024-06-28 04:17:19,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7339, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7391, PETRI_PLACES=301, PETRI_TRANSITIONS=447} [2024-06-28 04:17:19,448 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 261 predicate places. [2024-06-28 04:17:19,448 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 447 transitions, 7391 flow [2024-06-28 04:17:19,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:19,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:19,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:19,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 04:17:19,449 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:19,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:19,449 INFO L85 PathProgramCache]: Analyzing trace with hash -443479892, now seen corresponding path program 7 times [2024-06-28 04:17:19,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:19,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844756374] [2024-06-28 04:17:19,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:19,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:19,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:19,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844756374] [2024-06-28 04:17:19,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844756374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:19,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:19,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:17:19,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861496648] [2024-06-28 04:17:19,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:19,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:17:19,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:19,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:17:19,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:17:20,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:20,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 447 transitions, 7391 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:20,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:20,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:20,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:21,618 INFO L124 PetriNetUnfolderBase]: 4339/6433 cut-off events. [2024-06-28 04:17:21,618 INFO L125 PetriNetUnfolderBase]: For 743281/743281 co-relation queries the response was YES. [2024-06-28 04:17:21,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63156 conditions, 6433 events. 4339/6433 cut-off events. For 743281/743281 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 34504 event pairs, 1237 based on Foata normal form. 4/6435 useless extension candidates. Maximal degree in co-relation 63015. Up to 6335 conditions per place. [2024-06-28 04:17:21,701 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 429 selfloop transitions, 36 changer transitions 0/468 dead transitions. [2024-06-28 04:17:21,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 468 transitions, 8463 flow [2024-06-28 04:17:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:17:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:17:21,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 04:17:21,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40293040293040294 [2024-06-28 04:17:21,703 INFO L175 Difference]: Start difference. First operand has 301 places, 447 transitions, 7391 flow. Second operand 7 states and 110 transitions. [2024-06-28 04:17:21,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 468 transitions, 8463 flow [2024-06-28 04:17:23,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 468 transitions, 8302 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 04:17:23,262 INFO L231 Difference]: Finished difference. Result has 301 places, 452 transitions, 7400 flow [2024-06-28 04:17:23,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7230, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7400, PETRI_PLACES=301, PETRI_TRANSITIONS=452} [2024-06-28 04:17:23,262 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 261 predicate places. [2024-06-28 04:17:23,262 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 452 transitions, 7400 flow [2024-06-28 04:17:23,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:23,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:23,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:23,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 04:17:23,263 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:23,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash -244178102, now seen corresponding path program 8 times [2024-06-28 04:17:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:23,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354847246] [2024-06-28 04:17:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:23,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:23,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:23,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354847246] [2024-06-28 04:17:23,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354847246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:23,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:23,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:17:23,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173699654] [2024-06-28 04:17:23,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:23,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:17:23,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:23,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:17:23,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:17:23,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:23,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 452 transitions, 7400 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:23,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:23,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:23,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:25,364 INFO L124 PetriNetUnfolderBase]: 4327/6417 cut-off events. [2024-06-28 04:17:25,364 INFO L125 PetriNetUnfolderBase]: For 753579/753579 co-relation queries the response was YES. [2024-06-28 04:17:25,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62955 conditions, 6417 events. 4327/6417 cut-off events. For 753579/753579 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 34421 event pairs, 1226 based on Foata normal form. 4/6419 useless extension candidates. Maximal degree in co-relation 62812. Up to 6321 conditions per place. [2024-06-28 04:17:25,455 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 427 selfloop transitions, 40 changer transitions 0/470 dead transitions. [2024-06-28 04:17:25,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 470 transitions, 8404 flow [2024-06-28 04:17:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:17:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:17:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-28 04:17:25,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3732193732193732 [2024-06-28 04:17:25,456 INFO L175 Difference]: Start difference. First operand has 301 places, 452 transitions, 7400 flow. Second operand 9 states and 131 transitions. [2024-06-28 04:17:25,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 470 transitions, 8404 flow [2024-06-28 04:17:27,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 470 transitions, 8330 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 04:17:27,162 INFO L231 Difference]: Finished difference. Result has 306 places, 452 transitions, 7412 flow [2024-06-28 04:17:27,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7326, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7412, PETRI_PLACES=306, PETRI_TRANSITIONS=452} [2024-06-28 04:17:27,163 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 266 predicate places. [2024-06-28 04:17:27,163 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 452 transitions, 7412 flow [2024-06-28 04:17:27,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:27,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:27,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:27,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 04:17:27,163 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:27,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:27,163 INFO L85 PathProgramCache]: Analyzing trace with hash 410846166, now seen corresponding path program 9 times [2024-06-28 04:17:27,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:27,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868097969] [2024-06-28 04:17:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:27,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:27,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:27,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868097969] [2024-06-28 04:17:27,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868097969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:27,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:27,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:17:27,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022499545] [2024-06-28 04:17:27,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:27,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:17:27,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:27,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:17:27,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:17:27,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:27,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 452 transitions, 7412 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:27,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:27,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:27,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:29,149 INFO L124 PetriNetUnfolderBase]: 4319/6407 cut-off events. [2024-06-28 04:17:29,149 INFO L125 PetriNetUnfolderBase]: For 763405/763405 co-relation queries the response was YES. [2024-06-28 04:17:29,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62865 conditions, 6407 events. 4319/6407 cut-off events. For 763405/763405 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 34406 event pairs, 1205 based on Foata normal form. 4/6409 useless extension candidates. Maximal degree in co-relation 62721. Up to 6214 conditions per place. [2024-06-28 04:17:29,234 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 418 selfloop transitions, 53 changer transitions 0/474 dead transitions. [2024-06-28 04:17:29,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 474 transitions, 8590 flow [2024-06-28 04:17:29,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:17:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:17:29,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 04:17:29,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:17:29,235 INFO L175 Difference]: Start difference. First operand has 306 places, 452 transitions, 7412 flow. Second operand 7 states and 117 transitions. [2024-06-28 04:17:29,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 474 transitions, 8590 flow [2024-06-28 04:17:30,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 474 transitions, 8482 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 04:17:30,743 INFO L231 Difference]: Finished difference. Result has 305 places, 452 transitions, 7417 flow [2024-06-28 04:17:30,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7304, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7417, PETRI_PLACES=305, PETRI_TRANSITIONS=452} [2024-06-28 04:17:30,744 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 265 predicate places. [2024-06-28 04:17:30,744 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 452 transitions, 7417 flow [2024-06-28 04:17:30,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:30,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:30,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:30,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 04:17:30,744 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:30,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:30,744 INFO L85 PathProgramCache]: Analyzing trace with hash -620997362, now seen corresponding path program 10 times [2024-06-28 04:17:30,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:30,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950248486] [2024-06-28 04:17:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:30,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:31,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:31,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950248486] [2024-06-28 04:17:31,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950248486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:31,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:31,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:17:31,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234665910] [2024-06-28 04:17:31,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:31,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:17:31,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:31,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:17:31,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:17:31,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:31,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 452 transitions, 7417 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:31,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:31,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:31,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:32,755 INFO L124 PetriNetUnfolderBase]: 4387/6503 cut-off events. [2024-06-28 04:17:32,755 INFO L125 PetriNetUnfolderBase]: For 804480/804480 co-relation queries the response was YES. [2024-06-28 04:17:32,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63972 conditions, 6503 events. 4387/6503 cut-off events. For 804480/804480 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 34982 event pairs, 909 based on Foata normal form. 12/6513 useless extension candidates. Maximal degree in co-relation 63828. Up to 5493 conditions per place. [2024-06-28 04:17:32,855 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 362 selfloop transitions, 126 changer transitions 0/491 dead transitions. [2024-06-28 04:17:32,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 491 transitions, 8944 flow [2024-06-28 04:17:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:17:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:17:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 04:17:32,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-28 04:17:32,856 INFO L175 Difference]: Start difference. First operand has 305 places, 452 transitions, 7417 flow. Second operand 8 states and 146 transitions. [2024-06-28 04:17:32,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 491 transitions, 8944 flow [2024-06-28 04:17:34,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 491 transitions, 8813 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 04:17:34,675 INFO L231 Difference]: Finished difference. Result has 308 places, 459 transitions, 7680 flow [2024-06-28 04:17:34,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7286, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7680, PETRI_PLACES=308, PETRI_TRANSITIONS=459} [2024-06-28 04:17:34,675 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 268 predicate places. [2024-06-28 04:17:34,675 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 459 transitions, 7680 flow [2024-06-28 04:17:34,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:34,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:34,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:34,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 04:17:34,676 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:34,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:34,676 INFO L85 PathProgramCache]: Analyzing trace with hash 411083161, now seen corresponding path program 3 times [2024-06-28 04:17:34,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:34,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932952373] [2024-06-28 04:17:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:34,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:35,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:35,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932952373] [2024-06-28 04:17:35,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932952373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:35,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:35,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:17:35,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085994533] [2024-06-28 04:17:35,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:35,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:17:35,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:35,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:17:35,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:17:35,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:35,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 459 transitions, 7680 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:35,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:35,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:35,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:36,951 INFO L124 PetriNetUnfolderBase]: 4380/6493 cut-off events. [2024-06-28 04:17:36,951 INFO L125 PetriNetUnfolderBase]: For 796058/796058 co-relation queries the response was YES. [2024-06-28 04:17:37,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64565 conditions, 6493 events. 4380/6493 cut-off events. For 796058/796058 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 34935 event pairs, 1226 based on Foata normal form. 1/6492 useless extension candidates. Maximal degree in co-relation 64420. Up to 6416 conditions per place. [2024-06-28 04:17:37,050 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 441 selfloop transitions, 30 changer transitions 0/474 dead transitions. [2024-06-28 04:17:37,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 474 transitions, 8668 flow [2024-06-28 04:17:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:17:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:17:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-28 04:17:37,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41452991452991456 [2024-06-28 04:17:37,051 INFO L175 Difference]: Start difference. First operand has 308 places, 459 transitions, 7680 flow. Second operand 6 states and 97 transitions. [2024-06-28 04:17:37,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 474 transitions, 8668 flow [2024-06-28 04:17:38,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 474 transitions, 8273 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 04:17:38,803 INFO L231 Difference]: Finished difference. Result has 307 places, 459 transitions, 7363 flow [2024-06-28 04:17:38,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7285, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7363, PETRI_PLACES=307, PETRI_TRANSITIONS=459} [2024-06-28 04:17:38,804 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 267 predicate places. [2024-06-28 04:17:38,804 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 459 transitions, 7363 flow [2024-06-28 04:17:38,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:38,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:38,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:38,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 04:17:38,805 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:38,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:38,805 INFO L85 PathProgramCache]: Analyzing trace with hash -620789972, now seen corresponding path program 11 times [2024-06-28 04:17:38,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:38,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611260556] [2024-06-28 04:17:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:38,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:39,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:39,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611260556] [2024-06-28 04:17:39,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611260556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:39,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:39,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:17:39,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726203293] [2024-06-28 04:17:39,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:39,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:17:39,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:17:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:17:39,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:39,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 459 transitions, 7363 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:39,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:39,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:39,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:40,833 INFO L124 PetriNetUnfolderBase]: 4336/6433 cut-off events. [2024-06-28 04:17:40,833 INFO L125 PetriNetUnfolderBase]: For 806615/806615 co-relation queries the response was YES. [2024-06-28 04:17:40,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62555 conditions, 6433 events. 4336/6433 cut-off events. For 806615/806615 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 34535 event pairs, 935 based on Foata normal form. 12/6443 useless extension candidates. Maximal degree in co-relation 62410. Up to 5469 conditions per place. [2024-06-28 04:17:40,927 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 365 selfloop transitions, 119 changer transitions 0/487 dead transitions. [2024-06-28 04:17:40,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 487 transitions, 8603 flow [2024-06-28 04:17:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:17:40,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:17:40,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 04:17:40,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-06-28 04:17:40,928 INFO L175 Difference]: Start difference. First operand has 307 places, 459 transitions, 7363 flow. Second operand 8 states and 141 transitions. [2024-06-28 04:17:40,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 487 transitions, 8603 flow [2024-06-28 04:17:42,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 487 transitions, 8487 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 04:17:42,450 INFO L231 Difference]: Finished difference. Result has 308 places, 459 transitions, 7502 flow [2024-06-28 04:17:42,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7251, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7502, PETRI_PLACES=308, PETRI_TRANSITIONS=459} [2024-06-28 04:17:42,451 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 268 predicate places. [2024-06-28 04:17:42,451 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 459 transitions, 7502 flow [2024-06-28 04:17:42,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:42,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:42,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:42,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 04:17:42,452 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:42,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:42,452 INFO L85 PathProgramCache]: Analyzing trace with hash -249892022, now seen corresponding path program 12 times [2024-06-28 04:17:42,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:42,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038222783] [2024-06-28 04:17:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:42,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:42,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:42,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038222783] [2024-06-28 04:17:42,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038222783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:42,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:42,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:17:42,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619873537] [2024-06-28 04:17:42,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:42,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:17:42,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:42,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:17:42,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:17:43,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:43,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 459 transitions, 7502 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:43,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:43,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:43,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:44,474 INFO L124 PetriNetUnfolderBase]: 4302/6386 cut-off events. [2024-06-28 04:17:44,474 INFO L125 PetriNetUnfolderBase]: For 756279/756279 co-relation queries the response was YES. [2024-06-28 04:17:44,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61744 conditions, 6386 events. 4302/6386 cut-off events. For 756279/756279 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 34286 event pairs, 1192 based on Foata normal form. 8/6392 useless extension candidates. Maximal degree in co-relation 61600. Up to 6192 conditions per place. [2024-06-28 04:17:44,574 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 425 selfloop transitions, 51 changer transitions 0/479 dead transitions. [2024-06-28 04:17:44,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 479 transitions, 8542 flow [2024-06-28 04:17:44,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:17:44,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:17:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 04:17:44,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38746438746438744 [2024-06-28 04:17:44,576 INFO L175 Difference]: Start difference. First operand has 308 places, 459 transitions, 7502 flow. Second operand 9 states and 136 transitions. [2024-06-28 04:17:44,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 479 transitions, 8542 flow [2024-06-28 04:17:46,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 479 transitions, 8313 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 04:17:46,285 INFO L231 Difference]: Finished difference. Result has 312 places, 459 transitions, 7383 flow [2024-06-28 04:17:46,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7273, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7383, PETRI_PLACES=312, PETRI_TRANSITIONS=459} [2024-06-28 04:17:46,285 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 272 predicate places. [2024-06-28 04:17:46,285 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 459 transitions, 7383 flow [2024-06-28 04:17:46,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:46,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:46,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:46,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 04:17:46,286 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:46,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:46,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1959440699, now seen corresponding path program 5 times [2024-06-28 04:17:46,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:46,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437980989] [2024-06-28 04:17:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:46,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:47,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:47,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437980989] [2024-06-28 04:17:47,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437980989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:47,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:47,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:17:47,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418817696] [2024-06-28 04:17:47,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:47,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:17:47,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:47,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:17:47,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:17:47,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:47,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 459 transitions, 7383 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:47,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:47,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:47,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:48,615 INFO L124 PetriNetUnfolderBase]: 4460/6648 cut-off events. [2024-06-28 04:17:48,616 INFO L125 PetriNetUnfolderBase]: For 801046/801046 co-relation queries the response was YES. [2024-06-28 04:17:48,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62741 conditions, 6648 events. 4460/6648 cut-off events. For 801046/801046 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 36246 event pairs, 865 based on Foata normal form. 20/6666 useless extension candidates. Maximal degree in co-relation 62596. Up to 6086 conditions per place. [2024-06-28 04:17:48,710 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 448 selfloop transitions, 57 changer transitions 0/508 dead transitions. [2024-06-28 04:17:48,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 508 transitions, 8697 flow [2024-06-28 04:17:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:17:48,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:17:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 04:17:48,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586894586894587 [2024-06-28 04:17:48,711 INFO L175 Difference]: Start difference. First operand has 312 places, 459 transitions, 7383 flow. Second operand 9 states and 161 transitions. [2024-06-28 04:17:48,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 508 transitions, 8697 flow [2024-06-28 04:17:50,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 508 transitions, 8579 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 04:17:50,581 INFO L231 Difference]: Finished difference. Result has 313 places, 464 transitions, 7514 flow [2024-06-28 04:17:50,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7265, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7514, PETRI_PLACES=313, PETRI_TRANSITIONS=464} [2024-06-28 04:17:50,582 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 273 predicate places. [2024-06-28 04:17:50,582 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 464 transitions, 7514 flow [2024-06-28 04:17:50,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:50,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:50,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:50,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 04:17:50,583 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:50,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash -620782036, now seen corresponding path program 2 times [2024-06-28 04:17:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474077553] [2024-06-28 04:17:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:50,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:51,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:51,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:51,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474077553] [2024-06-28 04:17:51,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474077553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:51,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:51,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:17:51,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084613] [2024-06-28 04:17:51,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:51,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:17:51,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:51,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:17:51,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:17:51,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:51,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 464 transitions, 7514 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:51,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:51,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:51,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:52,931 INFO L124 PetriNetUnfolderBase]: 4468/6660 cut-off events. [2024-06-28 04:17:52,931 INFO L125 PetriNetUnfolderBase]: For 774088/774088 co-relation queries the response was YES. [2024-06-28 04:17:52,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63456 conditions, 6660 events. 4468/6660 cut-off events. For 774088/774088 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 36435 event pairs, 1153 based on Foata normal form. 2/6660 useless extension candidates. Maximal degree in co-relation 63310. Up to 6567 conditions per place. [2024-06-28 04:17:53,021 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 437 selfloop transitions, 44 changer transitions 0/484 dead transitions. [2024-06-28 04:17:53,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 484 transitions, 8578 flow [2024-06-28 04:17:53,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:17:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:17:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 04:17:53,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40293040293040294 [2024-06-28 04:17:53,023 INFO L175 Difference]: Start difference. First operand has 313 places, 464 transitions, 7514 flow. Second operand 7 states and 110 transitions. [2024-06-28 04:17:53,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 484 transitions, 8578 flow [2024-06-28 04:17:54,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 484 transitions, 8448 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 04:17:54,764 INFO L231 Difference]: Finished difference. Result has 315 places, 466 transitions, 7529 flow [2024-06-28 04:17:54,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7384, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7529, PETRI_PLACES=315, PETRI_TRANSITIONS=466} [2024-06-28 04:17:54,765 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 275 predicate places. [2024-06-28 04:17:54,765 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 466 transitions, 7529 flow [2024-06-28 04:17:54,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:54,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:54,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:54,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 04:17:54,765 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:54,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:54,765 INFO L85 PathProgramCache]: Analyzing trace with hash -249884086, now seen corresponding path program 3 times [2024-06-28 04:17:54,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:54,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195211724] [2024-06-28 04:17:54,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:54,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:55,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:55,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195211724] [2024-06-28 04:17:55,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195211724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:55,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:55,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:17:55,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33504620] [2024-06-28 04:17:55,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:55,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:17:55,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:55,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:17:55,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:17:55,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:55,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 466 transitions, 7529 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:55,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:55,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:55,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:57,005 INFO L124 PetriNetUnfolderBase]: 4476/6672 cut-off events. [2024-06-28 04:17:57,006 INFO L125 PetriNetUnfolderBase]: For 792960/792960 co-relation queries the response was YES. [2024-06-28 04:17:57,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63459 conditions, 6672 events. 4476/6672 cut-off events. For 792960/792960 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 36526 event pairs, 1230 based on Foata normal form. 2/6672 useless extension candidates. Maximal degree in co-relation 63312. Up to 6637 conditions per place. [2024-06-28 04:17:57,103 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 457 selfloop transitions, 19 changer transitions 0/479 dead transitions. [2024-06-28 04:17:57,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 479 transitions, 8561 flow [2024-06-28 04:17:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:17:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:17:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-28 04:17:57,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663003663003663 [2024-06-28 04:17:57,104 INFO L175 Difference]: Start difference. First operand has 315 places, 466 transitions, 7529 flow. Second operand 7 states and 100 transitions. [2024-06-28 04:17:57,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 479 transitions, 8561 flow [2024-06-28 04:17:58,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 479 transitions, 8434 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 04:17:58,980 INFO L231 Difference]: Finished difference. Result has 317 places, 468 transitions, 7497 flow [2024-06-28 04:17:58,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7406, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7497, PETRI_PLACES=317, PETRI_TRANSITIONS=468} [2024-06-28 04:17:58,981 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 277 predicate places. [2024-06-28 04:17:58,982 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 468 transitions, 7497 flow [2024-06-28 04:17:58,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:58,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:58,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:58,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 04:17:58,982 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:58,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:58,983 INFO L85 PathProgramCache]: Analyzing trace with hash -236997479, now seen corresponding path program 1 times [2024-06-28 04:17:58,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:58,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123899209] [2024-06-28 04:17:58,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:58,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:59,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:59,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123899209] [2024-06-28 04:17:59,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123899209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:59,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:59,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:17:59,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654821751] [2024-06-28 04:17:59,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:59,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:17:59,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:59,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:17:59,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:17:59,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:17:59,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 468 transitions, 7497 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:59,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:59,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:17:59,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:01,198 INFO L124 PetriNetUnfolderBase]: 4490/6692 cut-off events. [2024-06-28 04:18:01,198 INFO L125 PetriNetUnfolderBase]: For 790720/790720 co-relation queries the response was YES. [2024-06-28 04:18:01,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63487 conditions, 6692 events. 4490/6692 cut-off events. For 790720/790720 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 36592 event pairs, 1228 based on Foata normal form. 3/6693 useless extension candidates. Maximal degree in co-relation 63339. Up to 6443 conditions per place. [2024-06-28 04:18:01,293 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 428 selfloop transitions, 69 changer transitions 0/500 dead transitions. [2024-06-28 04:18:01,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 500 transitions, 8954 flow [2024-06-28 04:18:01,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:18:01,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:18:01,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 04:18:01,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39316239316239315 [2024-06-28 04:18:01,294 INFO L175 Difference]: Start difference. First operand has 317 places, 468 transitions, 7497 flow. Second operand 9 states and 138 transitions. [2024-06-28 04:18:01,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 500 transitions, 8954 flow [2024-06-28 04:18:03,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 500 transitions, 8879 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 04:18:03,109 INFO L231 Difference]: Finished difference. Result has 323 places, 480 transitions, 7866 flow [2024-06-28 04:18:03,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7422, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7866, PETRI_PLACES=323, PETRI_TRANSITIONS=480} [2024-06-28 04:18:03,110 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 283 predicate places. [2024-06-28 04:18:03,110 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 480 transitions, 7866 flow [2024-06-28 04:18:03,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:03,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:03,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:03,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 04:18:03,110 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:03,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:03,111 INFO L85 PathProgramCache]: Analyzing trace with hash -236997076, now seen corresponding path program 4 times [2024-06-28 04:18:03,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:03,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045327078] [2024-06-28 04:18:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:03,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:03,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:03,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045327078] [2024-06-28 04:18:03,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045327078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:03,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:03,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:18:03,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401294556] [2024-06-28 04:18:03,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:03,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:18:03,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:03,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:18:03,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:18:03,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:18:03,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 480 transitions, 7866 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:03,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:03,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:18:03,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:05,470 INFO L124 PetriNetUnfolderBase]: 4498/6704 cut-off events. [2024-06-28 04:18:05,470 INFO L125 PetriNetUnfolderBase]: For 811583/811583 co-relation queries the response was YES. [2024-06-28 04:18:05,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64738 conditions, 6704 events. 4498/6704 cut-off events. For 811583/811583 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 36661 event pairs, 1237 based on Foata normal form. 2/6704 useless extension candidates. Maximal degree in co-relation 64587. Up to 6660 conditions per place. [2024-06-28 04:18:05,561 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 467 selfloop transitions, 23 changer transitions 0/493 dead transitions. [2024-06-28 04:18:05,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 493 transitions, 8926 flow [2024-06-28 04:18:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:18:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:18:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-28 04:18:05,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663003663003663 [2024-06-28 04:18:05,562 INFO L175 Difference]: Start difference. First operand has 323 places, 480 transitions, 7866 flow. Second operand 7 states and 100 transitions. [2024-06-28 04:18:05,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 493 transitions, 8926 flow [2024-06-28 04:18:07,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 493 transitions, 8754 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-06-28 04:18:07,080 INFO L231 Difference]: Finished difference. Result has 326 places, 482 transitions, 7800 flow [2024-06-28 04:18:07,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7694, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7800, PETRI_PLACES=326, PETRI_TRANSITIONS=482} [2024-06-28 04:18:07,081 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 286 predicate places. [2024-06-28 04:18:07,081 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 482 transitions, 7800 flow [2024-06-28 04:18:07,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:07,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:07,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:07,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 04:18:07,081 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:07,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:07,082 INFO L85 PathProgramCache]: Analyzing trace with hash -236551606, now seen corresponding path program 5 times [2024-06-28 04:18:07,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:07,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215465019] [2024-06-28 04:18:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:07,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:07,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:07,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215465019] [2024-06-28 04:18:07,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215465019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:07,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:07,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:18:07,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844887476] [2024-06-28 04:18:07,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:07,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:18:07,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:07,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:18:07,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:18:07,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:18:07,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 482 transitions, 7800 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:07,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:07,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:18:07,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:09,386 INFO L124 PetriNetUnfolderBase]: 4493/6697 cut-off events. [2024-06-28 04:18:09,386 INFO L125 PetriNetUnfolderBase]: For 823819/823819 co-relation queries the response was YES. [2024-06-28 04:18:09,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64479 conditions, 6697 events. 4493/6697 cut-off events. For 823819/823819 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 36593 event pairs, 1220 based on Foata normal form. 2/6697 useless extension candidates. Maximal degree in co-relation 64327. Up to 6660 conditions per place. [2024-06-28 04:18:09,484 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 475 selfloop transitions, 17 changer transitions 0/495 dead transitions. [2024-06-28 04:18:09,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 495 transitions, 8862 flow [2024-06-28 04:18:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:18:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:18:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-28 04:18:09,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3626373626373626 [2024-06-28 04:18:09,485 INFO L175 Difference]: Start difference. First operand has 326 places, 482 transitions, 7800 flow. Second operand 7 states and 99 transitions. [2024-06-28 04:18:09,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 495 transitions, 8862 flow [2024-06-28 04:18:11,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 495 transitions, 8768 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 04:18:11,334 INFO L231 Difference]: Finished difference. Result has 328 places, 484 transitions, 7801 flow [2024-06-28 04:18:11,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7710, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7801, PETRI_PLACES=328, PETRI_TRANSITIONS=484} [2024-06-28 04:18:11,335 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 288 predicate places. [2024-06-28 04:18:11,335 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 484 transitions, 7801 flow [2024-06-28 04:18:11,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:11,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:11,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:11,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 04:18:11,335 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:11,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:11,336 INFO L85 PathProgramCache]: Analyzing trace with hash 336546766, now seen corresponding path program 13 times [2024-06-28 04:18:11,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:11,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380518696] [2024-06-28 04:18:11,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:11,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:11,934 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 04:18:11,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:11,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380518696] [2024-06-28 04:18:11,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380518696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:11,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:11,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:18:11,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29189900] [2024-06-28 04:18:11,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:11,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:18:11,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:11,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:18:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:18:11,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:18:11,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 484 transitions, 7801 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:11,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:11,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:18:11,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:13,648 INFO L124 PetriNetUnfolderBase]: 4929/7309 cut-off events. [2024-06-28 04:18:13,648 INFO L125 PetriNetUnfolderBase]: For 880903/880903 co-relation queries the response was YES. [2024-06-28 04:18:13,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69954 conditions, 7309 events. 4929/7309 cut-off events. For 880903/880903 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 40258 event pairs, 1098 based on Foata normal form. 12/7319 useless extension candidates. Maximal degree in co-relation 69801. Up to 6548 conditions per place. [2024-06-28 04:18:13,761 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 448 selfloop transitions, 127 changer transitions 0/578 dead transitions. [2024-06-28 04:18:13,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 578 transitions, 10434 flow [2024-06-28 04:18:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:18:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:18:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 04:18:13,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41794871794871796 [2024-06-28 04:18:13,762 INFO L175 Difference]: Start difference. First operand has 328 places, 484 transitions, 7801 flow. Second operand 10 states and 163 transitions. [2024-06-28 04:18:13,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 578 transitions, 10434 flow [2024-06-28 04:18:15,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 578 transitions, 10359 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 04:18:15,412 INFO L231 Difference]: Finished difference. Result has 337 places, 541 transitions, 9282 flow [2024-06-28 04:18:15,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7726, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9282, PETRI_PLACES=337, PETRI_TRANSITIONS=541} [2024-06-28 04:18:15,413 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 297 predicate places. [2024-06-28 04:18:15,413 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 541 transitions, 9282 flow [2024-06-28 04:18:15,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:15,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:15,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:15,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 04:18:15,413 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:15,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:15,413 INFO L85 PathProgramCache]: Analyzing trace with hash -307826812, now seen corresponding path program 14 times [2024-06-28 04:18:15,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:15,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34768356] [2024-06-28 04:18:15,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:15,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:16,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:16,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34768356] [2024-06-28 04:18:16,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34768356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:16,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:16,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:18:16,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487912370] [2024-06-28 04:18:16,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:16,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:18:16,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:16,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:18:16,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:18:16,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:18:16,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 541 transitions, 9282 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:16,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:16,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:18:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:17,844 INFO L124 PetriNetUnfolderBase]: 4877/7237 cut-off events. [2024-06-28 04:18:17,844 INFO L125 PetriNetUnfolderBase]: For 868452/868452 co-relation queries the response was YES. [2024-06-28 04:18:17,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70173 conditions, 7237 events. 4877/7237 cut-off events. For 868452/868452 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 39841 event pairs, 1104 based on Foata normal form. 12/7247 useless extension candidates. Maximal degree in co-relation 70015. Up to 6520 conditions per place. [2024-06-28 04:18:17,949 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 447 selfloop transitions, 129 changer transitions 0/579 dead transitions. [2024-06-28 04:18:17,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 579 transitions, 10855 flow [2024-06-28 04:18:17,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:18:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:18:17,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 04:18:17,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40559440559440557 [2024-06-28 04:18:17,951 INFO L175 Difference]: Start difference. First operand has 337 places, 541 transitions, 9282 flow. Second operand 11 states and 174 transitions. [2024-06-28 04:18:17,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 579 transitions, 10855 flow [2024-06-28 04:18:20,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 579 transitions, 10626 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 04:18:20,358 INFO L231 Difference]: Finished difference. Result has 347 places, 547 transitions, 9542 flow [2024-06-28 04:18:20,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9053, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9542, PETRI_PLACES=347, PETRI_TRANSITIONS=547} [2024-06-28 04:18:20,358 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 307 predicate places. [2024-06-28 04:18:20,359 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 547 transitions, 9542 flow [2024-06-28 04:18:20,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:20,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:20,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:20,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 04:18:20,359 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:20,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:20,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1612704432, now seen corresponding path program 1 times [2024-06-28 04:18:20,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:20,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608547894] [2024-06-28 04:18:20,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:20,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:21,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:21,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608547894] [2024-06-28 04:18:21,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608547894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:21,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:21,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:18:21,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977667229] [2024-06-28 04:18:21,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:21,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:18:21,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:21,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:18:21,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:18:21,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:18:21,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 547 transitions, 9542 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:21,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:21,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:18:21,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:23,174 INFO L124 PetriNetUnfolderBase]: 4951/7351 cut-off events. [2024-06-28 04:18:23,174 INFO L125 PetriNetUnfolderBase]: For 905198/905198 co-relation queries the response was YES. [2024-06-28 04:18:23,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72236 conditions, 7351 events. 4951/7351 cut-off events. For 905198/905198 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 40647 event pairs, 1357 based on Foata normal form. 8/7357 useless extension candidates. Maximal degree in co-relation 72074. Up to 7058 conditions per place. [2024-06-28 04:18:23,278 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 527 selfloop transitions, 49 changer transitions 0/579 dead transitions. [2024-06-28 04:18:23,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 579 transitions, 11034 flow [2024-06-28 04:18:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:18:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:18:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 04:18:23,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39316239316239315 [2024-06-28 04:18:23,279 INFO L175 Difference]: Start difference. First operand has 347 places, 547 transitions, 9542 flow. Second operand 9 states and 138 transitions. [2024-06-28 04:18:23,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 579 transitions, 11034 flow [2024-06-28 04:18:25,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 579 transitions, 10724 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 04:18:25,952 INFO L231 Difference]: Finished difference. Result has 346 places, 549 transitions, 9372 flow [2024-06-28 04:18:25,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9232, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9372, PETRI_PLACES=346, PETRI_TRANSITIONS=549} [2024-06-28 04:18:25,952 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 306 predicate places. [2024-06-28 04:18:25,952 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 549 transitions, 9372 flow [2024-06-28 04:18:25,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:25,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:25,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:25,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 04:18:25,953 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:25,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:25,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2014091888, now seen corresponding path program 2 times [2024-06-28 04:18:25,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:25,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056171754] [2024-06-28 04:18:25,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:25,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:26,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056171754] [2024-06-28 04:18:26,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056171754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:26,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:26,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:18:26,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38648501] [2024-06-28 04:18:26,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:26,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:18:26,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:26,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:18:26,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:18:27,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:18:27,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 549 transitions, 9372 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:27,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:27,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:18:27,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:28,869 INFO L124 PetriNetUnfolderBase]: 5051/7503 cut-off events. [2024-06-28 04:18:28,870 INFO L125 PetriNetUnfolderBase]: For 963182/963182 co-relation queries the response was YES. [2024-06-28 04:18:28,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73879 conditions, 7503 events. 5051/7503 cut-off events. For 963182/963182 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 41759 event pairs, 1420 based on Foata normal form. 8/7509 useless extension candidates. Maximal degree in co-relation 73716. Up to 7272 conditions per place. [2024-06-28 04:18:29,250 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 528 selfloop transitions, 47 changer transitions 0/578 dead transitions. [2024-06-28 04:18:29,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 578 transitions, 10864 flow [2024-06-28 04:18:29,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:18:29,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:18:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 04:18:29,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903133903133903 [2024-06-28 04:18:29,251 INFO L175 Difference]: Start difference. First operand has 346 places, 549 transitions, 9372 flow. Second operand 9 states and 137 transitions. [2024-06-28 04:18:29,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 578 transitions, 10864 flow [2024-06-28 04:18:31,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 578 transitions, 10802 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 04:18:31,464 INFO L231 Difference]: Finished difference. Result has 350 places, 551 transitions, 9450 flow [2024-06-28 04:18:31,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9310, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9450, PETRI_PLACES=350, PETRI_TRANSITIONS=551} [2024-06-28 04:18:31,465 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 310 predicate places. [2024-06-28 04:18:31,465 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 551 transitions, 9450 flow [2024-06-28 04:18:31,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:31,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:31,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:31,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 04:18:31,465 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:31,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:31,466 INFO L85 PathProgramCache]: Analyzing trace with hash -582447104, now seen corresponding path program 3 times [2024-06-28 04:18:31,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:31,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434079988] [2024-06-28 04:18:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:31,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:32,276 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 04:18:32,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:32,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434079988] [2024-06-28 04:18:32,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434079988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:32,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:32,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:18:32,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758549639] [2024-06-28 04:18:32,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:32,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:18:32,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:32,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:18:32,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:18:32,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:18:32,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 551 transitions, 9450 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:32,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:32,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:18:32,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:34,237 INFO L124 PetriNetUnfolderBase]: 5023/7463 cut-off events. [2024-06-28 04:18:34,237 INFO L125 PetriNetUnfolderBase]: For 957706/957706 co-relation queries the response was YES. [2024-06-28 04:18:34,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73040 conditions, 7463 events. 5023/7463 cut-off events. For 957706/957706 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 41427 event pairs, 1422 based on Foata normal form. 12/7473 useless extension candidates. Maximal degree in co-relation 72875. Up to 7298 conditions per place. [2024-06-28 04:18:34,369 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 525 selfloop transitions, 45 changer transitions 0/573 dead transitions. [2024-06-28 04:18:34,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 573 transitions, 10706 flow [2024-06-28 04:18:34,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:18:34,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:18:34,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 04:18:34,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40064102564102566 [2024-06-28 04:18:34,371 INFO L175 Difference]: Start difference. First operand has 350 places, 551 transitions, 9450 flow. Second operand 8 states and 125 transitions. [2024-06-28 04:18:34,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 573 transitions, 10706 flow [2024-06-28 04:18:37,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 573 transitions, 10637 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 04:18:37,374 INFO L231 Difference]: Finished difference. Result has 353 places, 551 transitions, 9477 flow [2024-06-28 04:18:37,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9381, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9477, PETRI_PLACES=353, PETRI_TRANSITIONS=551} [2024-06-28 04:18:37,374 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 313 predicate places. [2024-06-28 04:18:37,374 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 551 transitions, 9477 flow [2024-06-28 04:18:37,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:37,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:37,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:37,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 04:18:37,375 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:37,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:37,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1204274168, now seen corresponding path program 4 times [2024-06-28 04:18:37,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:37,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621238970] [2024-06-28 04:18:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:37,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:38,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:38,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621238970] [2024-06-28 04:18:38,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621238970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:38,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:38,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:18:38,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221064982] [2024-06-28 04:18:38,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:38,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:18:38,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:38,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:18:38,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:18:38,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:18:38,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 551 transitions, 9477 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:38,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:38,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:18:38,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:40,195 INFO L124 PetriNetUnfolderBase]: 5067/7531 cut-off events. [2024-06-28 04:18:40,195 INFO L125 PetriNetUnfolderBase]: For 979496/979496 co-relation queries the response was YES. [2024-06-28 04:18:40,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73736 conditions, 7531 events. 5067/7531 cut-off events. For 979496/979496 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 41954 event pairs, 1430 based on Foata normal form. 12/7541 useless extension candidates. Maximal degree in co-relation 73569. Up to 7389 conditions per place. [2024-06-28 04:18:40,305 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 533 selfloop transitions, 37 changer transitions 0/573 dead transitions. [2024-06-28 04:18:40,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 573 transitions, 10748 flow [2024-06-28 04:18:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:18:40,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:18:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 04:18:40,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139194139194139 [2024-06-28 04:18:40,307 INFO L175 Difference]: Start difference. First operand has 353 places, 551 transitions, 9477 flow. Second operand 7 states and 113 transitions. [2024-06-28 04:18:40,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 573 transitions, 10748 flow [2024-06-28 04:18:42,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 573 transitions, 10653 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 04:18:42,798 INFO L231 Difference]: Finished difference. Result has 353 places, 552 transitions, 9488 flow [2024-06-28 04:18:42,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9382, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9488, PETRI_PLACES=353, PETRI_TRANSITIONS=552} [2024-06-28 04:18:42,799 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 313 predicate places. [2024-06-28 04:18:42,799 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 552 transitions, 9488 flow [2024-06-28 04:18:42,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:42,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:42,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:42,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 04:18:42,799 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:42,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:42,799 INFO L85 PathProgramCache]: Analyzing trace with hash -443619826, now seen corresponding path program 5 times [2024-06-28 04:18:42,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:42,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884541543] [2024-06-28 04:18:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:42,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:43,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:43,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884541543] [2024-06-28 04:18:43,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884541543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:43,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:43,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:18:43,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77794336] [2024-06-28 04:18:43,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:43,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:18:43,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:43,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:18:43,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:18:43,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:18:43,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 552 transitions, 9488 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:43,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:43,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:18:43,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:45,751 INFO L124 PetriNetUnfolderBase]: 5095/7575 cut-off events. [2024-06-28 04:18:45,752 INFO L125 PetriNetUnfolderBase]: For 987662/987662 co-relation queries the response was YES. [2024-06-28 04:18:45,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74287 conditions, 7575 events. 5095/7575 cut-off events. For 987662/987662 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 42283 event pairs, 1385 based on Foata normal form. 8/7581 useless extension candidates. Maximal degree in co-relation 74119. Up to 7297 conditions per place. [2024-06-28 04:18:45,853 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 536 selfloop transitions, 41 changer transitions 0/580 dead transitions. [2024-06-28 04:18:45,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 580 transitions, 10962 flow [2024-06-28 04:18:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:18:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:18:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 04:18:45,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 04:18:45,854 INFO L175 Difference]: Start difference. First operand has 353 places, 552 transitions, 9488 flow. Second operand 7 states and 119 transitions. [2024-06-28 04:18:45,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 580 transitions, 10962 flow [2024-06-28 04:18:48,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 580 transitions, 10884 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 04:18:48,299 INFO L231 Difference]: Finished difference. Result has 355 places, 553 transitions, 9520 flow [2024-06-28 04:18:48,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9410, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9520, PETRI_PLACES=355, PETRI_TRANSITIONS=553} [2024-06-28 04:18:48,299 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 315 predicate places. [2024-06-28 04:18:48,300 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 553 transitions, 9520 flow [2024-06-28 04:18:48,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:48,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:48,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:48,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 04:18:48,300 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:48,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:48,301 INFO L85 PathProgramCache]: Analyzing trace with hash -236812564, now seen corresponding path program 1 times [2024-06-28 04:18:48,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:48,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580352396] [2024-06-28 04:18:48,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:48,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:49,183 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 04:18:49,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:49,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580352396] [2024-06-28 04:18:49,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580352396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:49,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:49,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:18:49,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497993514] [2024-06-28 04:18:49,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:49,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:18:49,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:49,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:18:49,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:18:49,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:18:49,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 553 transitions, 9520 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:49,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:49,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:18:49,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:51,138 INFO L124 PetriNetUnfolderBase]: 5067/7535 cut-off events. [2024-06-28 04:18:51,138 INFO L125 PetriNetUnfolderBase]: For 980175/980175 co-relation queries the response was YES. [2024-06-28 04:18:51,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73234 conditions, 7535 events. 5067/7535 cut-off events. For 980175/980175 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 42047 event pairs, 1422 based on Foata normal form. 12/7545 useless extension candidates. Maximal degree in co-relation 73065. Up to 7399 conditions per place. [2024-06-28 04:18:51,259 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 535 selfloop transitions, 38 changer transitions 0/576 dead transitions. [2024-06-28 04:18:51,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 576 transitions, 10779 flow [2024-06-28 04:18:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:18:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:18:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-28 04:18:51,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817663817663818 [2024-06-28 04:18:51,260 INFO L175 Difference]: Start difference. First operand has 355 places, 553 transitions, 9520 flow. Second operand 9 states and 134 transitions. [2024-06-28 04:18:51,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 576 transitions, 10779 flow [2024-06-28 04:18:54,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 576 transitions, 10636 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 04:18:54,095 INFO L231 Difference]: Finished difference. Result has 358 places, 553 transitions, 9459 flow [2024-06-28 04:18:54,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9377, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9459, PETRI_PLACES=358, PETRI_TRANSITIONS=553} [2024-06-28 04:18:54,096 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 318 predicate places. [2024-06-28 04:18:54,096 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 553 transitions, 9459 flow [2024-06-28 04:18:54,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:54,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:54,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:54,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 04:18:54,096 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:54,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:54,096 INFO L85 PathProgramCache]: Analyzing trace with hash -236545654, now seen corresponding path program 2 times [2024-06-28 04:18:54,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:54,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68141841] [2024-06-28 04:18:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:54,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:54,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:54,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68141841] [2024-06-28 04:18:54,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68141841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:54,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:54,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:18:54,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679503906] [2024-06-28 04:18:54,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:54,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:18:54,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:18:54,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:18:55,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:18:55,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 553 transitions, 9459 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:55,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:55,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:18:55,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:56,939 INFO L124 PetriNetUnfolderBase]: 5049/7509 cut-off events. [2024-06-28 04:18:56,939 INFO L125 PetriNetUnfolderBase]: For 954407/954407 co-relation queries the response was YES. [2024-06-28 04:18:57,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72257 conditions, 7509 events. 5049/7509 cut-off events. For 954407/954407 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 41781 event pairs, 1398 based on Foata normal form. 8/7515 useless extension candidates. Maximal degree in co-relation 72088. Up to 7277 conditions per place. [2024-06-28 04:18:57,055 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 533 selfloop transitions, 42 changer transitions 0/578 dead transitions. [2024-06-28 04:18:57,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 578 transitions, 10741 flow [2024-06-28 04:18:57,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:18:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:18:57,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-28 04:18:57,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 04:18:57,056 INFO L175 Difference]: Start difference. First operand has 358 places, 553 transitions, 9459 flow. Second operand 9 states and 135 transitions. [2024-06-28 04:18:57,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 578 transitions, 10741 flow [2024-06-28 04:18:59,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 578 transitions, 10647 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 04:18:59,974 INFO L231 Difference]: Finished difference. Result has 359 places, 553 transitions, 9453 flow [2024-06-28 04:18:59,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9365, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9453, PETRI_PLACES=359, PETRI_TRANSITIONS=553} [2024-06-28 04:18:59,975 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 319 predicate places. [2024-06-28 04:18:59,975 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 553 transitions, 9453 flow [2024-06-28 04:18:59,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:59,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:59,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:59,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 04:18:59,976 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:59,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:59,976 INFO L85 PathProgramCache]: Analyzing trace with hash 663072220, now seen corresponding path program 1 times [2024-06-28 04:18:59,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:59,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857491820] [2024-06-28 04:18:59,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:59,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:00,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:00,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857491820] [2024-06-28 04:19:00,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857491820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:00,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:00,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:19:00,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878862887] [2024-06-28 04:19:00,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:00,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:19:00,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:00,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:19:00,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:19:00,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:19:00,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 553 transitions, 9453 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:00,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:00,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:19:00,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:02,805 INFO L124 PetriNetUnfolderBase]: 5331/7898 cut-off events. [2024-06-28 04:19:02,805 INFO L125 PetriNetUnfolderBase]: For 1082508/1082510 co-relation queries the response was YES. [2024-06-28 04:19:02,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78695 conditions, 7898 events. 5331/7898 cut-off events. For 1082508/1082510 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 44133 event pairs, 1020 based on Foata normal form. 2/7898 useless extension candidates. Maximal degree in co-relation 78525. Up to 5529 conditions per place. [2024-06-28 04:19:02,920 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 325 selfloop transitions, 290 changer transitions 0/618 dead transitions. [2024-06-28 04:19:02,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 618 transitions, 11942 flow [2024-06-28 04:19:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:19:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:19:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 04:19:02,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-28 04:19:02,921 INFO L175 Difference]: Start difference. First operand has 359 places, 553 transitions, 9453 flow. Second operand 8 states and 147 transitions. [2024-06-28 04:19:02,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 618 transitions, 11942 flow [2024-06-28 04:19:05,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 618 transitions, 11817 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 04:19:05,867 INFO L231 Difference]: Finished difference. Result has 361 places, 580 transitions, 10608 flow [2024-06-28 04:19:05,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9328, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10608, PETRI_PLACES=361, PETRI_TRANSITIONS=580} [2024-06-28 04:19:05,868 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 321 predicate places. [2024-06-28 04:19:05,869 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 580 transitions, 10608 flow [2024-06-28 04:19:05,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:05,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:05,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:05,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 04:19:05,869 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:05,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:05,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1183180116, now seen corresponding path program 2 times [2024-06-28 04:19:05,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:05,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124392099] [2024-06-28 04:19:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:05,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:06,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:06,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124392099] [2024-06-28 04:19:06,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124392099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:06,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:06,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:19:06,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790211764] [2024-06-28 04:19:06,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:06,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:19:06,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:06,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:19:06,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:19:06,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:19:06,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 580 transitions, 10608 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:06,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:06,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:19:06,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:08,930 INFO L124 PetriNetUnfolderBase]: 5341/7912 cut-off events. [2024-06-28 04:19:08,930 INFO L125 PetriNetUnfolderBase]: For 1115596/1115598 co-relation queries the response was YES. [2024-06-28 04:19:09,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81395 conditions, 7912 events. 5341/7912 cut-off events. For 1115596/1115598 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 44166 event pairs, 907 based on Foata normal form. 2/7912 useless extension candidates. Maximal degree in co-relation 81223. Up to 6041 conditions per place. [2024-06-28 04:19:09,037 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 314 selfloop transitions, 308 changer transitions 0/625 dead transitions. [2024-06-28 04:19:09,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 625 transitions, 12705 flow [2024-06-28 04:19:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:19:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:19:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 04:19:09,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672364672364672 [2024-06-28 04:19:09,038 INFO L175 Difference]: Start difference. First operand has 361 places, 580 transitions, 10608 flow. Second operand 9 states and 164 transitions. [2024-06-28 04:19:09,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 625 transitions, 12705 flow [2024-06-28 04:19:12,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 625 transitions, 12310 flow, removed 100 selfloop flow, removed 3 redundant places. [2024-06-28 04:19:12,152 INFO L231 Difference]: Finished difference. Result has 367 places, 583 transitions, 10932 flow [2024-06-28 04:19:12,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10253, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10932, PETRI_PLACES=367, PETRI_TRANSITIONS=583} [2024-06-28 04:19:12,153 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 327 predicate places. [2024-06-28 04:19:12,153 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 583 transitions, 10932 flow [2024-06-28 04:19:12,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:12,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:12,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:12,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 04:19:12,153 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:12,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:12,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2017156834, now seen corresponding path program 3 times [2024-06-28 04:19:12,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:12,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094106265] [2024-06-28 04:19:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:12,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:13,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:13,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:13,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094106265] [2024-06-28 04:19:13,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094106265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:13,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:13,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:19:13,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976952602] [2024-06-28 04:19:13,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:13,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:19:13,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:13,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:19:13,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:19:13,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:19:13,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 583 transitions, 10932 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:13,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:13,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:19:13,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:15,131 INFO L124 PetriNetUnfolderBase]: 5327/7892 cut-off events. [2024-06-28 04:19:15,131 INFO L125 PetriNetUnfolderBase]: For 1102934/1102936 co-relation queries the response was YES. [2024-06-28 04:19:15,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82082 conditions, 7892 events. 5327/7892 cut-off events. For 1102934/1102936 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 44028 event pairs, 1013 based on Foata normal form. 4/7894 useless extension candidates. Maximal degree in co-relation 81908. Up to 7442 conditions per place. [2024-06-28 04:19:15,263 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 513 selfloop transitions, 108 changer transitions 0/624 dead transitions. [2024-06-28 04:19:15,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 624 transitions, 12704 flow [2024-06-28 04:19:15,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:19:15,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:19:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 04:19:15,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41595441595441596 [2024-06-28 04:19:15,264 INFO L175 Difference]: Start difference. First operand has 367 places, 583 transitions, 10932 flow. Second operand 9 states and 146 transitions. [2024-06-28 04:19:15,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 624 transitions, 12704 flow [2024-06-28 04:19:18,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 624 transitions, 12224 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 04:19:18,902 INFO L231 Difference]: Finished difference. Result has 371 places, 595 transitions, 10943 flow [2024-06-28 04:19:18,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10452, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10943, PETRI_PLACES=371, PETRI_TRANSITIONS=595} [2024-06-28 04:19:18,902 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 331 predicate places. [2024-06-28 04:19:18,902 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 595 transitions, 10943 flow [2024-06-28 04:19:18,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:18,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:18,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:18,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 04:19:18,903 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:18,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:18,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2130052062, now seen corresponding path program 4 times [2024-06-28 04:19:18,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:18,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787654947] [2024-06-28 04:19:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:18,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:19,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:19,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787654947] [2024-06-28 04:19:19,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787654947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:19,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:19,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:19:19,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194942613] [2024-06-28 04:19:19,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:19,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:19:19,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:19,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:19:19,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:19:19,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:19:19,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 595 transitions, 10943 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:19,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:19,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:19:19,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:21,791 INFO L124 PetriNetUnfolderBase]: 5309/7868 cut-off events. [2024-06-28 04:19:21,792 INFO L125 PetriNetUnfolderBase]: For 1119778/1119780 co-relation queries the response was YES. [2024-06-28 04:19:21,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80722 conditions, 7868 events. 5309/7868 cut-off events. For 1119778/1119780 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 43947 event pairs, 907 based on Foata normal form. 6/7872 useless extension candidates. Maximal degree in co-relation 80546. Up to 6293 conditions per place. [2024-06-28 04:19:21,923 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 372 selfloop transitions, 263 changer transitions 0/638 dead transitions. [2024-06-28 04:19:21,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 638 transitions, 13363 flow [2024-06-28 04:19:21,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:19:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:19:21,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 04:19:21,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2024-06-28 04:19:21,925 INFO L175 Difference]: Start difference. First operand has 371 places, 595 transitions, 10943 flow. Second operand 10 states and 177 transitions. [2024-06-28 04:19:21,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 638 transitions, 13363 flow [2024-06-28 04:19:25,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 638 transitions, 13118 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 04:19:25,204 INFO L231 Difference]: Finished difference. Result has 375 places, 595 transitions, 11232 flow [2024-06-28 04:19:25,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10698, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11232, PETRI_PLACES=375, PETRI_TRANSITIONS=595} [2024-06-28 04:19:25,205 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 335 predicate places. [2024-06-28 04:19:25,205 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 595 transitions, 11232 flow [2024-06-28 04:19:25,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:25,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:25,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:25,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 04:19:25,206 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:25,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:25,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1413166636, now seen corresponding path program 1 times [2024-06-28 04:19:25,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:25,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726638493] [2024-06-28 04:19:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:25,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:25,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:25,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726638493] [2024-06-28 04:19:25,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726638493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:25,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:25,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:19:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750713742] [2024-06-28 04:19:25,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:25,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:19:25,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:25,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:19:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:19:25,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:19:25,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 595 transitions, 11232 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:25,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:25,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:19:25,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:28,193 INFO L124 PetriNetUnfolderBase]: 5349/7924 cut-off events. [2024-06-28 04:19:28,193 INFO L125 PetriNetUnfolderBase]: For 1160560/1160562 co-relation queries the response was YES. [2024-06-28 04:19:28,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82385 conditions, 7924 events. 5349/7924 cut-off events. For 1160560/1160562 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 44271 event pairs, 1058 based on Foata normal form. 8/7930 useless extension candidates. Maximal degree in co-relation 82208. Up to 5144 conditions per place. [2024-06-28 04:19:28,311 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 263 selfloop transitions, 381 changer transitions 0/647 dead transitions. [2024-06-28 04:19:28,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 647 transitions, 13835 flow [2024-06-28 04:19:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:19:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:19:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-28 04:19:28,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 04:19:28,312 INFO L175 Difference]: Start difference. First operand has 375 places, 595 transitions, 11232 flow. Second operand 11 states and 195 transitions. [2024-06-28 04:19:28,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 647 transitions, 13835 flow [2024-06-28 04:19:31,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 647 transitions, 13045 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-28 04:19:31,495 INFO L231 Difference]: Finished difference. Result has 379 places, 601 transitions, 11347 flow [2024-06-28 04:19:31,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10472, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11347, PETRI_PLACES=379, PETRI_TRANSITIONS=601} [2024-06-28 04:19:31,496 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 339 predicate places. [2024-06-28 04:19:31,496 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 601 transitions, 11347 flow [2024-06-28 04:19:31,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:31,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:31,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:31,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 04:19:31,496 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:31,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:31,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1412958936, now seen corresponding path program 5 times [2024-06-28 04:19:31,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:31,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805894281] [2024-06-28 04:19:31,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:31,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:32,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:32,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805894281] [2024-06-28 04:19:32,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805894281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:32,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:32,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:19:32,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649504261] [2024-06-28 04:19:32,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:32,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:19:32,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:32,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:19:32,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:19:32,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:19:32,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 601 transitions, 11347 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:32,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:32,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:19:32,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:34,271 INFO L124 PetriNetUnfolderBase]: 5343/7916 cut-off events. [2024-06-28 04:19:34,271 INFO L125 PetriNetUnfolderBase]: For 1144846/1144848 co-relation queries the response was YES. [2024-06-28 04:19:34,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82639 conditions, 7916 events. 5343/7916 cut-off events. For 1144846/1144848 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 44190 event pairs, 1018 based on Foata normal form. 4/7918 useless extension candidates. Maximal degree in co-relation 82461. Up to 7548 conditions per place. [2024-06-28 04:19:34,400 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 530 selfloop transitions, 95 changer transitions 0/628 dead transitions. [2024-06-28 04:19:34,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 628 transitions, 12723 flow [2024-06-28 04:19:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:19:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:19:34,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 04:19:34,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 04:19:34,402 INFO L175 Difference]: Start difference. First operand has 379 places, 601 transitions, 11347 flow. Second operand 9 states and 144 transitions. [2024-06-28 04:19:34,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 628 transitions, 12723 flow [2024-06-28 04:19:37,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 628 transitions, 11745 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 04:19:37,702 INFO L231 Difference]: Finished difference. Result has 380 places, 601 transitions, 10565 flow [2024-06-28 04:19:37,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10369, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10565, PETRI_PLACES=380, PETRI_TRANSITIONS=601} [2024-06-28 04:19:37,703 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 340 predicate places. [2024-06-28 04:19:37,703 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 601 transitions, 10565 flow [2024-06-28 04:19:37,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:37,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:37,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:37,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 04:19:37,703 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:37,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:37,704 INFO L85 PathProgramCache]: Analyzing trace with hash 897612950, now seen corresponding path program 2 times [2024-06-28 04:19:37,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:37,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417326480] [2024-06-28 04:19:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:37,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:38,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:38,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417326480] [2024-06-28 04:19:38,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417326480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:38,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:38,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:19:38,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934627841] [2024-06-28 04:19:38,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:38,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:19:38,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:38,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:19:38,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:19:38,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:19:38,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 601 transitions, 10565 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:38,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:38,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:19:38,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:40,499 INFO L124 PetriNetUnfolderBase]: 5319/7884 cut-off events. [2024-06-28 04:19:40,499 INFO L125 PetriNetUnfolderBase]: For 1146914/1146916 co-relation queries the response was YES. [2024-06-28 04:19:40,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79892 conditions, 7884 events. 5319/7884 cut-off events. For 1146914/1146916 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 44047 event pairs, 1050 based on Foata normal form. 8/7890 useless extension candidates. Maximal degree in co-relation 79713. Up to 5129 conditions per place. [2024-06-28 04:19:40,617 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 264 selfloop transitions, 373 changer transitions 0/640 dead transitions. [2024-06-28 04:19:40,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 640 transitions, 12811 flow [2024-06-28 04:19:40,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:19:40,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:19:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 04:19:40,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700854700854701 [2024-06-28 04:19:40,618 INFO L175 Difference]: Start difference. First operand has 380 places, 601 transitions, 10565 flow. Second operand 9 states and 165 transitions. [2024-06-28 04:19:40,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 640 transitions, 12811 flow [2024-06-28 04:19:44,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 640 transitions, 12591 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 04:19:44,671 INFO L231 Difference]: Finished difference. Result has 382 places, 601 transitions, 11103 flow [2024-06-28 04:19:44,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10345, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=373, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11103, PETRI_PLACES=382, PETRI_TRANSITIONS=601} [2024-06-28 04:19:44,672 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 342 predicate places. [2024-06-28 04:19:44,672 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 601 transitions, 11103 flow [2024-06-28 04:19:44,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:44,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:44,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:44,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 04:19:44,672 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:44,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash 34542876, now seen corresponding path program 1 times [2024-06-28 04:19:44,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:44,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788112339] [2024-06-28 04:19:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:44,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:45,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:45,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:45,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788112339] [2024-06-28 04:19:45,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788112339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:45,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:45,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:19:45,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655690037] [2024-06-28 04:19:45,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:45,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:19:45,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:45,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:19:45,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:19:45,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:19:45,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 601 transitions, 11103 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:45,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:45,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:19:45,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:47,719 INFO L124 PetriNetUnfolderBase]: 5361/7946 cut-off events. [2024-06-28 04:19:47,720 INFO L125 PetriNetUnfolderBase]: For 1183924/1183926 co-relation queries the response was YES. [2024-06-28 04:19:47,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82808 conditions, 7946 events. 5361/7946 cut-off events. For 1183924/1183926 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 44505 event pairs, 988 based on Foata normal form. 6/7950 useless extension candidates. Maximal degree in co-relation 82628. Up to 7498 conditions per place. [2024-06-28 04:19:47,834 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 536 selfloop transitions, 95 changer transitions 0/634 dead transitions. [2024-06-28 04:19:47,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 634 transitions, 12825 flow [2024-06-28 04:19:47,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:19:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:19:47,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 04:19:47,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42628205128205127 [2024-06-28 04:19:47,836 INFO L175 Difference]: Start difference. First operand has 382 places, 601 transitions, 11103 flow. Second operand 8 states and 133 transitions. [2024-06-28 04:19:47,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 634 transitions, 12825 flow [2024-06-28 04:19:51,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 634 transitions, 12236 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 04:19:51,458 INFO L231 Difference]: Finished difference. Result has 383 places, 607 transitions, 10892 flow [2024-06-28 04:19:51,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10514, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10892, PETRI_PLACES=383, PETRI_TRANSITIONS=607} [2024-06-28 04:19:51,459 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 343 predicate places. [2024-06-28 04:19:51,459 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 607 transitions, 10892 flow [2024-06-28 04:19:51,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:51,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:51,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:51,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 04:19:51,460 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:51,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2068381146, now seen corresponding path program 2 times [2024-06-28 04:19:51,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:51,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335260378] [2024-06-28 04:19:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:51,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:52,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:52,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335260378] [2024-06-28 04:19:52,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335260378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:52,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:52,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:19:52,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677743759] [2024-06-28 04:19:52,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:52,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:19:52,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:52,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:19:52,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:19:52,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:19:52,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 607 transitions, 10892 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:52,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:52,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:19:52,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:54,505 INFO L124 PetriNetUnfolderBase]: 5510/8169 cut-off events. [2024-06-28 04:19:54,506 INFO L125 PetriNetUnfolderBase]: For 1211828/1211830 co-relation queries the response was YES. [2024-06-28 04:19:54,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84402 conditions, 8169 events. 5510/8169 cut-off events. For 1211828/1211830 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 45841 event pairs, 1156 based on Foata normal form. 6/8173 useless extension candidates. Maximal degree in co-relation 84221. Up to 7839 conditions per place. [2024-06-28 04:19:54,647 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 570 selfloop transitions, 82 changer transitions 0/655 dead transitions. [2024-06-28 04:19:54,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 655 transitions, 12888 flow [2024-06-28 04:19:54,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:19:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:19:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-28 04:19:54,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 04:19:54,648 INFO L175 Difference]: Start difference. First operand has 383 places, 607 transitions, 10892 flow. Second operand 9 states and 135 transitions. [2024-06-28 04:19:54,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 655 transitions, 12888 flow [2024-06-28 04:19:58,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 655 transitions, 12580 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-28 04:19:58,859 INFO L231 Difference]: Finished difference. Result has 391 places, 633 transitions, 11464 flow [2024-06-28 04:19:58,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10654, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11464, PETRI_PLACES=391, PETRI_TRANSITIONS=633} [2024-06-28 04:19:58,860 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 351 predicate places. [2024-06-28 04:19:58,860 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 633 transitions, 11464 flow [2024-06-28 04:19:58,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:58,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:58,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:58,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 04:19:58,860 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:58,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:58,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1304786688, now seen corresponding path program 6 times [2024-06-28 04:19:58,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:58,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66427811] [2024-06-28 04:19:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:59,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:59,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66427811] [2024-06-28 04:19:59,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66427811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:59,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:59,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:19:59,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74255175] [2024-06-28 04:19:59,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:59,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:19:59,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:59,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:19:59,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:19:59,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:19:59,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 633 transitions, 11464 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:59,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:59,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:19:59,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:01,835 INFO L124 PetriNetUnfolderBase]: 5580/8263 cut-off events. [2024-06-28 04:20:01,835 INFO L125 PetriNetUnfolderBase]: For 1259636/1259638 co-relation queries the response was YES. [2024-06-28 04:20:01,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86070 conditions, 8263 events. 5580/8263 cut-off events. For 1259636/1259638 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 46370 event pairs, 902 based on Foata normal form. 6/8267 useless extension candidates. Maximal degree in co-relation 85884. Up to 6610 conditions per place. [2024-06-28 04:20:01,969 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 421 selfloop transitions, 254 changer transitions 0/678 dead transitions. [2024-06-28 04:20:01,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 678 transitions, 13819 flow [2024-06-28 04:20:01,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:20:01,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:20:01,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 04:20:01,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472934472934473 [2024-06-28 04:20:01,971 INFO L175 Difference]: Start difference. First operand has 391 places, 633 transitions, 11464 flow. Second operand 9 states and 157 transitions. [2024-06-28 04:20:01,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 678 transitions, 13819 flow [2024-06-28 04:20:07,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 678 transitions, 13706 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 04:20:07,314 INFO L231 Difference]: Finished difference. Result has 396 places, 642 transitions, 12087 flow [2024-06-28 04:20:07,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11351, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12087, PETRI_PLACES=396, PETRI_TRANSITIONS=642} [2024-06-28 04:20:07,314 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 356 predicate places. [2024-06-28 04:20:07,315 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 642 transitions, 12087 flow [2024-06-28 04:20:07,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:07,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:07,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:20:07,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 04:20:07,315 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:20:07,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:07,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1304786998, now seen corresponding path program 3 times [2024-06-28 04:20:07,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:07,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469744879] [2024-06-28 04:20:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:07,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:07,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:07,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469744879] [2024-06-28 04:20:07,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469744879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:07,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:07,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:20:07,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188227231] [2024-06-28 04:20:07,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:07,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:20:07,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:07,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:20:07,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:20:08,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:20:08,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 642 transitions, 12087 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:08,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:08,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:20:08,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:10,359 INFO L124 PetriNetUnfolderBase]: 5620/8319 cut-off events. [2024-06-28 04:20:10,359 INFO L125 PetriNetUnfolderBase]: For 1304893/1304895 co-relation queries the response was YES. [2024-06-28 04:20:10,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87912 conditions, 8319 events. 5620/8319 cut-off events. For 1304893/1304895 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 46763 event pairs, 1037 based on Foata normal form. 8/8325 useless extension candidates. Maximal degree in co-relation 87725. Up to 5306 conditions per place. [2024-06-28 04:20:10,495 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 306 selfloop transitions, 376 changer transitions 0/685 dead transitions. [2024-06-28 04:20:10,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 685 transitions, 14589 flow [2024-06-28 04:20:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:20:10,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:20:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 04:20:10,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 04:20:10,497 INFO L175 Difference]: Start difference. First operand has 396 places, 642 transitions, 12087 flow. Second operand 9 states and 162 transitions. [2024-06-28 04:20:10,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 685 transitions, 14589 flow [2024-06-28 04:20:15,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 685 transitions, 14109 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-28 04:20:15,585 INFO L231 Difference]: Finished difference. Result has 401 places, 648 transitions, 12510 flow [2024-06-28 04:20:15,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11633, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12510, PETRI_PLACES=401, PETRI_TRANSITIONS=648} [2024-06-28 04:20:15,586 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 361 predicate places. [2024-06-28 04:20:15,586 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 648 transitions, 12510 flow [2024-06-28 04:20:15,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:15,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:15,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:20:15,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 04:20:15,586 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:20:15,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:15,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1304797228, now seen corresponding path program 4 times [2024-06-28 04:20:15,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:15,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806454740] [2024-06-28 04:20:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:15,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:16,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:16,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806454740] [2024-06-28 04:20:16,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806454740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:16,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:16,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:20:16,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798750234] [2024-06-28 04:20:16,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:16,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:20:16,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:16,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:20:16,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:20:16,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:20:16,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 648 transitions, 12510 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:16,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:16,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:20:16,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:18,685 INFO L124 PetriNetUnfolderBase]: 5600/8291 cut-off events. [2024-06-28 04:20:18,685 INFO L125 PetriNetUnfolderBase]: For 1295482/1295484 co-relation queries the response was YES. [2024-06-28 04:20:18,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88189 conditions, 8291 events. 5600/8291 cut-off events. For 1295482/1295484 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 46546 event pairs, 1025 based on Foata normal form. 4/8293 useless extension candidates. Maximal degree in co-relation 88001. Up to 5294 conditions per place. [2024-06-28 04:20:18,808 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 305 selfloop transitions, 382 changer transitions 0/690 dead transitions. [2024-06-28 04:20:18,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 690 transitions, 14740 flow [2024-06-28 04:20:18,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:20:18,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:20:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 04:20:18,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405594405594406 [2024-06-28 04:20:18,809 INFO L175 Difference]: Start difference. First operand has 401 places, 648 transitions, 12510 flow. Second operand 11 states and 189 transitions. [2024-06-28 04:20:18,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 690 transitions, 14740 flow [2024-06-28 04:20:22,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 690 transitions, 14145 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 04:20:22,965 INFO L231 Difference]: Finished difference. Result has 407 places, 648 transitions, 12685 flow [2024-06-28 04:20:22,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11915, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12685, PETRI_PLACES=407, PETRI_TRANSITIONS=648} [2024-06-28 04:20:22,966 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 367 predicate places. [2024-06-28 04:20:22,966 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 648 transitions, 12685 flow [2024-06-28 04:20:22,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:22,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:22,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:20:22,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 04:20:22,967 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:20:22,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:22,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1585722944, now seen corresponding path program 3 times [2024-06-28 04:20:22,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:22,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493718694] [2024-06-28 04:20:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:22,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:23,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:23,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493718694] [2024-06-28 04:20:23,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493718694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:23,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:23,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:20:23,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354290841] [2024-06-28 04:20:23,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:23,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:20:23,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:23,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:20:23,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:20:23,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:20:23,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 648 transitions, 12685 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:23,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:23,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:20:23,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:25,879 INFO L124 PetriNetUnfolderBase]: 5616/8314 cut-off events. [2024-06-28 04:20:25,879 INFO L125 PetriNetUnfolderBase]: For 1324711/1324711 co-relation queries the response was YES. [2024-06-28 04:20:25,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88651 conditions, 8314 events. 5616/8314 cut-off events. For 1324711/1324711 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 46723 event pairs, 1357 based on Foata normal form. 4/8316 useless extension candidates. Maximal degree in co-relation 88462. Up to 8169 conditions per place. [2024-06-28 04:20:26,029 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 612 selfloop transitions, 55 changer transitions 0/670 dead transitions. [2024-06-28 04:20:26,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 670 transitions, 14145 flow [2024-06-28 04:20:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:20:26,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:20:26,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 04:20:26,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37606837606837606 [2024-06-28 04:20:26,031 INFO L175 Difference]: Start difference. First operand has 407 places, 648 transitions, 12685 flow. Second operand 9 states and 132 transitions. [2024-06-28 04:20:26,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 670 transitions, 14145 flow [2024-06-28 04:20:31,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 670 transitions, 13573 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 04:20:31,568 INFO L231 Difference]: Finished difference. Result has 407 places, 651 transitions, 12293 flow [2024-06-28 04:20:31,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12113, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12293, PETRI_PLACES=407, PETRI_TRANSITIONS=651} [2024-06-28 04:20:31,569 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 367 predicate places. [2024-06-28 04:20:31,569 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 651 transitions, 12293 flow [2024-06-28 04:20:31,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:31,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:31,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:20:31,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 04:20:31,569 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:20:31,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:31,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1581997922, now seen corresponding path program 7 times [2024-06-28 04:20:31,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:31,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43179002] [2024-06-28 04:20:31,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:31,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:32,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:32,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43179002] [2024-06-28 04:20:32,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43179002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:32,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:32,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:20:32,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508560299] [2024-06-28 04:20:32,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:32,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:20:32,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:32,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:20:32,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:20:32,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:20:32,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 651 transitions, 12293 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:32,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:32,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:20:32,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:34,395 INFO L124 PetriNetUnfolderBase]: 5562/8242 cut-off events. [2024-06-28 04:20:34,396 INFO L125 PetriNetUnfolderBase]: For 1325319/1325319 co-relation queries the response was YES. [2024-06-28 04:20:34,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84750 conditions, 8242 events. 5562/8242 cut-off events. For 1325319/1325319 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 46298 event pairs, 1186 based on Foata normal form. 18/8258 useless extension candidates. Maximal degree in co-relation 84560. Up to 7592 conditions per place. [2024-06-28 04:20:34,545 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 542 selfloop transitions, 130 changer transitions 0/675 dead transitions. [2024-06-28 04:20:34,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 675 transitions, 13757 flow [2024-06-28 04:20:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:20:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:20:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 04:20:34,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 04:20:34,546 INFO L175 Difference]: Start difference. First operand has 407 places, 651 transitions, 12293 flow. Second operand 9 states and 144 transitions. [2024-06-28 04:20:34,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 675 transitions, 13757 flow [2024-06-28 04:20:39,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 675 transitions, 13610 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 04:20:39,972 INFO L231 Difference]: Finished difference. Result has 409 places, 651 transitions, 12434 flow [2024-06-28 04:20:39,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12146, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12434, PETRI_PLACES=409, PETRI_TRANSITIONS=651} [2024-06-28 04:20:39,973 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 369 predicate places. [2024-06-28 04:20:39,973 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 651 transitions, 12434 flow [2024-06-28 04:20:39,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:39,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:39,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:20:39,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 04:20:39,974 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:20:39,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:39,974 INFO L85 PathProgramCache]: Analyzing trace with hash 829861204, now seen corresponding path program 8 times [2024-06-28 04:20:39,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:39,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163306854] [2024-06-28 04:20:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:39,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:40,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:40,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163306854] [2024-06-28 04:20:40,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163306854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:40,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:40,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:20:40,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563234101] [2024-06-28 04:20:40,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:40,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:20:40,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:40,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:20:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:20:40,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:20:40,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 651 transitions, 12434 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:40,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:40,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:20:40,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:42,828 INFO L124 PetriNetUnfolderBase]: 5484/8134 cut-off events. [2024-06-28 04:20:42,828 INFO L125 PetriNetUnfolderBase]: For 1261792/1261792 co-relation queries the response was YES. [2024-06-28 04:20:42,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82656 conditions, 8134 events. 5484/8134 cut-off events. For 1261792/1261792 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 45672 event pairs, 1185 based on Foata normal form. 18/8150 useless extension candidates. Maximal degree in co-relation 82465. Up to 7265 conditions per place. [2024-06-28 04:20:42,964 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 524 selfloop transitions, 148 changer transitions 0/675 dead transitions. [2024-06-28 04:20:42,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 675 transitions, 13898 flow [2024-06-28 04:20:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:20:42,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:20:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 04:20:42,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131054131054131 [2024-06-28 04:20:42,965 INFO L175 Difference]: Start difference. First operand has 409 places, 651 transitions, 12434 flow. Second operand 9 states and 145 transitions. [2024-06-28 04:20:42,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 675 transitions, 13898 flow [2024-06-28 04:20:47,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 675 transitions, 13598 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 04:20:47,517 INFO L231 Difference]: Finished difference. Result has 411 places, 651 transitions, 12450 flow [2024-06-28 04:20:47,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12134, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12450, PETRI_PLACES=411, PETRI_TRANSITIONS=651} [2024-06-28 04:20:47,518 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 371 predicate places. [2024-06-28 04:20:47,518 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 651 transitions, 12450 flow [2024-06-28 04:20:47,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:47,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:47,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:20:47,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 04:20:47,518 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:20:47,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1176691630, now seen corresponding path program 1 times [2024-06-28 04:20:47,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:47,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442095463] [2024-06-28 04:20:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:47,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:48,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:48,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442095463] [2024-06-28 04:20:48,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442095463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:48,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:48,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:20:48,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568902220] [2024-06-28 04:20:48,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:48,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:20:48,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:48,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:20:48,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:20:48,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:20:48,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 651 transitions, 12450 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 04:20:48,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:48,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:20:48,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:50,947 INFO L124 PetriNetUnfolderBase]: 6252/9359 cut-off events. [2024-06-28 04:20:50,947 INFO L125 PetriNetUnfolderBase]: For 2023205/2023207 co-relation queries the response was YES. [2024-06-28 04:20:51,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100232 conditions, 9359 events. 6252/9359 cut-off events. For 2023205/2023207 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 53890 event pairs, 1174 based on Foata normal form. 56/9413 useless extension candidates. Maximal degree in co-relation 100040. Up to 3195 conditions per place. [2024-06-28 04:20:51,099 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 307 selfloop transitions, 400 changer transitions 8/718 dead transitions. [2024-06-28 04:20:51,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 718 transitions, 15304 flow [2024-06-28 04:20:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:20:51,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:20:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 04:20:51,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-28 04:20:51,100 INFO L175 Difference]: Start difference. First operand has 411 places, 651 transitions, 12450 flow. Second operand 9 states and 180 transitions. [2024-06-28 04:20:51,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 718 transitions, 15304 flow [2024-06-28 04:20:57,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 718 transitions, 15026 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 04:20:57,125 INFO L231 Difference]: Finished difference. Result has 414 places, 651 transitions, 13019 flow [2024-06-28 04:20:57,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12172, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13019, PETRI_PLACES=414, PETRI_TRANSITIONS=651} [2024-06-28 04:20:57,125 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 374 predicate places. [2024-06-28 04:20:57,126 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 651 transitions, 13019 flow [2024-06-28 04:20:57,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 04:20:57,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:57,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:20:57,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 04:20:57,126 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:20:57,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:57,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1183178380, now seen corresponding path program 2 times [2024-06-28 04:20:57,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:57,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471812810] [2024-06-28 04:20:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:57,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:57,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471812810] [2024-06-28 04:20:57,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471812810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:20:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112643419] [2024-06-28 04:20:57,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:57,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:20:57,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:57,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:20:57,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:20:57,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:20:57,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 651 transitions, 13019 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 04:20:57,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:57,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:20:57,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:01,607 INFO L124 PetriNetUnfolderBase]: 7135/10754 cut-off events. [2024-06-28 04:21:01,607 INFO L125 PetriNetUnfolderBase]: For 2811715/2811717 co-relation queries the response was YES. [2024-06-28 04:21:01,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124251 conditions, 10754 events. 7135/10754 cut-off events. For 2811715/2811717 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 63970 event pairs, 1762 based on Foata normal form. 56/10808 useless extension candidates. Maximal degree in co-relation 124057. Up to 6110 conditions per place. [2024-06-28 04:21:01,776 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 307 selfloop transitions, 394 changer transitions 5/709 dead transitions. [2024-06-28 04:21:01,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 709 transitions, 15809 flow [2024-06-28 04:21:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:21:01,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:21:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 04:21:01,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928774928774929 [2024-06-28 04:21:01,777 INFO L175 Difference]: Start difference. First operand has 414 places, 651 transitions, 13019 flow. Second operand 9 states and 173 transitions. [2024-06-28 04:21:01,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 709 transitions, 15809 flow [2024-06-28 04:21:09,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 709 transitions, 15254 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 04:21:09,032 INFO L231 Difference]: Finished difference. Result has 420 places, 653 transitions, 13417 flow [2024-06-28 04:21:09,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12464, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=389, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13417, PETRI_PLACES=420, PETRI_TRANSITIONS=653} [2024-06-28 04:21:09,033 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 380 predicate places. [2024-06-28 04:21:09,033 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 653 transitions, 13417 flow [2024-06-28 04:21:09,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 04:21:09,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:09,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:09,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 04:21:09,033 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:21:09,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:09,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1183186750, now seen corresponding path program 3 times [2024-06-28 04:21:09,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:09,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947119550] [2024-06-28 04:21:09,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:09,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:09,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947119550] [2024-06-28 04:21:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947119550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:09,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:09,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:21:09,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865997442] [2024-06-28 04:21:09,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:09,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:21:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:21:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:21:09,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:21:09,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 653 transitions, 13417 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 04:21:09,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:09,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:21:09,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:13,515 INFO L124 PetriNetUnfolderBase]: 7224/10937 cut-off events. [2024-06-28 04:21:13,516 INFO L125 PetriNetUnfolderBase]: For 2785037/2785039 co-relation queries the response was YES. [2024-06-28 04:21:13,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124325 conditions, 10937 events. 7224/10937 cut-off events. For 2785037/2785039 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 65664 event pairs, 1950 based on Foata normal form. 68/11003 useless extension candidates. Maximal degree in co-relation 124128. Up to 7596 conditions per place. [2024-06-28 04:21:13,715 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 302 selfloop transitions, 391 changer transitions 3/699 dead transitions. [2024-06-28 04:21:13,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 699 transitions, 15780 flow [2024-06-28 04:21:13,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:21:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:21:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 04:21:13,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-28 04:21:13,716 INFO L175 Difference]: Start difference. First operand has 420 places, 653 transitions, 13417 flow. Second operand 9 states and 168 transitions. [2024-06-28 04:21:13,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 699 transitions, 15780 flow [2024-06-28 04:21:21,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 699 transitions, 15221 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 04:21:21,558 INFO L231 Difference]: Finished difference. Result has 424 places, 652 transitions, 13664 flow [2024-06-28 04:21:21,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12858, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=389, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13664, PETRI_PLACES=424, PETRI_TRANSITIONS=652} [2024-06-28 04:21:21,558 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 384 predicate places. [2024-06-28 04:21:21,558 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 652 transitions, 13664 flow [2024-06-28 04:21:21,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 04:21:21,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:21,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:21,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 04:21:21,559 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:21:21,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:21,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1413163660, now seen corresponding path program 4 times [2024-06-28 04:21:21,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:21,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637883838] [2024-06-28 04:21:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:21,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:22,289 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 04:21:22,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:22,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637883838] [2024-06-28 04:21:22,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637883838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:22,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:22,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:21:22,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348100441] [2024-06-28 04:21:22,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:22,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:21:22,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:22,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:21:22,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:21:22,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:21:22,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 652 transitions, 13664 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 04:21:22,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:22,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:21:22,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:26,028 INFO L124 PetriNetUnfolderBase]: 7128/10814 cut-off events. [2024-06-28 04:21:26,029 INFO L125 PetriNetUnfolderBase]: For 2452328/2452330 co-relation queries the response was YES. [2024-06-28 04:21:26,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118701 conditions, 10814 events. 7128/10814 cut-off events. For 2452328/2452330 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 65093 event pairs, 1812 based on Foata normal form. 63/10875 useless extension candidates. Maximal degree in co-relation 118502. Up to 8703 conditions per place. [2024-06-28 04:21:26,199 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 409 selfloop transitions, 282 changer transitions 2/696 dead transitions. [2024-06-28 04:21:26,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 696 transitions, 15958 flow [2024-06-28 04:21:26,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:21:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:21:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 04:21:26,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47293447293447294 [2024-06-28 04:21:26,200 INFO L175 Difference]: Start difference. First operand has 424 places, 652 transitions, 13664 flow. Second operand 9 states and 166 transitions. [2024-06-28 04:21:26,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 696 transitions, 15958 flow [2024-06-28 04:21:33,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 696 transitions, 15109 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 04:21:33,252 INFO L231 Difference]: Finished difference. Result has 425 places, 652 transitions, 13413 flow [2024-06-28 04:21:33,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12821, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13413, PETRI_PLACES=425, PETRI_TRANSITIONS=652} [2024-06-28 04:21:33,252 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 385 predicate places. [2024-06-28 04:21:33,252 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 652 transitions, 13413 flow [2024-06-28 04:21:33,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 04:21:33,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:33,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:33,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 04:21:33,253 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:21:33,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:33,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1592390548, now seen corresponding path program 1 times [2024-06-28 04:21:33,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:33,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453248398] [2024-06-28 04:21:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:33,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:34,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:34,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453248398] [2024-06-28 04:21:34,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453248398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:34,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:34,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:21:34,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434315890] [2024-06-28 04:21:34,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:34,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:21:34,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:34,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:21:34,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:21:34,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:21:34,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 652 transitions, 13413 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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 04:21:34,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:34,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:21:34,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:37,795 INFO L124 PetriNetUnfolderBase]: 7180/10893 cut-off events. [2024-06-28 04:21:37,796 INFO L125 PetriNetUnfolderBase]: For 2238170/2238170 co-relation queries the response was YES. [2024-06-28 04:21:38,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118604 conditions, 10893 events. 7180/10893 cut-off events. For 2238170/2238170 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 65782 event pairs, 2234 based on Foata normal form. 14/10905 useless extension candidates. Maximal degree in co-relation 118405. Up to 9772 conditions per place. [2024-06-28 04:21:38,224 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 498 selfloop transitions, 185 changer transitions 0/686 dead transitions. [2024-06-28 04:21:38,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 686 transitions, 15025 flow [2024-06-28 04:21:38,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:21:38,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:21:38,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 04:21:38,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-06-28 04:21:38,226 INFO L175 Difference]: Start difference. First operand has 425 places, 652 transitions, 13413 flow. Second operand 11 states and 173 transitions. [2024-06-28 04:21:38,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 686 transitions, 15025 flow [2024-06-28 04:21:45,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 686 transitions, 14401 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 04:21:45,023 INFO L231 Difference]: Finished difference. Result has 428 places, 654 transitions, 13243 flow [2024-06-28 04:21:45,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12789, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13243, PETRI_PLACES=428, PETRI_TRANSITIONS=654} [2024-06-28 04:21:45,024 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 388 predicate places. [2024-06-28 04:21:45,024 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 654 transitions, 13243 flow [2024-06-28 04:21:45,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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 04:21:45,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:45,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:45,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 04:21:45,024 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:21:45,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1582202646, now seen corresponding path program 5 times [2024-06-28 04:21:45,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:45,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153031110] [2024-06-28 04:21:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:45,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:46,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:46,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153031110] [2024-06-28 04:21:46,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153031110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:46,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:46,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:21:46,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793264963] [2024-06-28 04:21:46,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:46,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:21:46,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:46,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:21:46,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:21:46,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:21:46,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 654 transitions, 13243 flow. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 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 04:21:46,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:46,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:21:46,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:50,123 INFO L124 PetriNetUnfolderBase]: 7674/11667 cut-off events. [2024-06-28 04:21:50,123 INFO L125 PetriNetUnfolderBase]: For 2835209/2835209 co-relation queries the response was YES. [2024-06-28 04:21:50,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123220 conditions, 11667 events. 7674/11667 cut-off events. For 2835209/2835209 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 71378 event pairs, 2376 based on Foata normal form. 122/11787 useless extension candidates. Maximal degree in co-relation 123020. Up to 9826 conditions per place. [2024-06-28 04:21:50,314 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 506 selfloop transitions, 189 changer transitions 7/705 dead transitions. [2024-06-28 04:21:50,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 705 transitions, 15324 flow [2024-06-28 04:21:50,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:21:50,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:21:50,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 04:21:50,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172494172494173 [2024-06-28 04:21:50,315 INFO L175 Difference]: Start difference. First operand has 428 places, 654 transitions, 13243 flow. Second operand 11 states and 179 transitions. [2024-06-28 04:21:50,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 705 transitions, 15324 flow [2024-06-28 04:21:58,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 705 transitions, 14894 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 04:21:58,324 INFO L231 Difference]: Finished difference. Result has 430 places, 663 transitions, 13537 flow [2024-06-28 04:21:58,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12831, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13537, PETRI_PLACES=430, PETRI_TRANSITIONS=663} [2024-06-28 04:21:58,325 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 390 predicate places. [2024-06-28 04:21:58,325 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 663 transitions, 13537 flow [2024-06-28 04:21:58,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 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 04:21:58,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:58,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:58,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 04:21:58,326 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:21:58,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:58,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1592402638, now seen corresponding path program 2 times [2024-06-28 04:21:58,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:58,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402256120] [2024-06-28 04:21:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:58,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:59,189 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 04:21:59,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:59,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402256120] [2024-06-28 04:21:59,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402256120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:59,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:59,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:21:59,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912509004] [2024-06-28 04:21:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:59,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:21:59,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:21:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:21:59,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:21:59,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 663 transitions, 13537 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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 04:21:59,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:59,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:21:59,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:03,468 INFO L124 PetriNetUnfolderBase]: 8062/12283 cut-off events. [2024-06-28 04:22:03,468 INFO L125 PetriNetUnfolderBase]: For 2665981/2665981 co-relation queries the response was YES. [2024-06-28 04:22:03,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134306 conditions, 12283 events. 8062/12283 cut-off events. For 2665981/2665981 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 76248 event pairs, 2562 based on Foata normal form. 14/12295 useless extension candidates. Maximal degree in co-relation 134105. Up to 9880 conditions per place. [2024-06-28 04:22:03,670 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 519 selfloop transitions, 184 changer transitions 0/706 dead transitions. [2024-06-28 04:22:03,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 706 transitions, 15509 flow [2024-06-28 04:22:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:22:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:22:03,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 04:22:03,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172494172494173 [2024-06-28 04:22:03,671 INFO L175 Difference]: Start difference. First operand has 430 places, 663 transitions, 13537 flow. Second operand 11 states and 179 transitions. [2024-06-28 04:22:03,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 706 transitions, 15509 flow [2024-06-28 04:22:13,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 706 transitions, 15141 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 04:22:13,329 INFO L231 Difference]: Finished difference. Result has 435 places, 667 transitions, 13738 flow [2024-06-28 04:22:13,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=13169, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13738, PETRI_PLACES=435, PETRI_TRANSITIONS=667} [2024-06-28 04:22:13,330 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 395 predicate places. [2024-06-28 04:22:13,330 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 667 transitions, 13738 flow [2024-06-28 04:22:13,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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 04:22:13,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:22:13,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:22:13,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 04:22:13,330 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:22:13,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:22:13,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1581905976, now seen corresponding path program 6 times [2024-06-28 04:22:13,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:22:13,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300063566] [2024-06-28 04:22:13,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:22:13,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:22:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:22:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:22:14,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:22:14,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300063566] [2024-06-28 04:22:14,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300063566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:22:14,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:22:14,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:22:14,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112600072] [2024-06-28 04:22:14,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:22:14,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:22:14,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:22:14,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:22:14,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:22:14,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-28 04:22:14,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 667 transitions, 13738 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 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 04:22:14,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:22:14,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-28 04:22:14,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:22:18,750 INFO L124 PetriNetUnfolderBase]: 8746/13367 cut-off events. [2024-06-28 04:22:18,750 INFO L125 PetriNetUnfolderBase]: For 3523637/3523637 co-relation queries the response was YES. [2024-06-28 04:22:18,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150383 conditions, 13367 events. 8746/13367 cut-off events. For 3523637/3523637 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 84316 event pairs, 2866 based on Foata normal form. 56/13421 useless extension candidates. Maximal degree in co-relation 150180. Up to 10240 conditions per place. [2024-06-28 04:22:18,997 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 518 selfloop transitions, 184 changer transitions 7/712 dead transitions. [2024-06-28 04:22:18,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 712 transitions, 15803 flow [2024-06-28 04:22:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:22:18,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:22:18,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 04:22:18,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 04:22:18,998 INFO L175 Difference]: Start difference. First operand has 435 places, 667 transitions, 13738 flow. Second operand 10 states and 170 transitions. [2024-06-28 04:22:18,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 712 transitions, 15803 flow