./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix015.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/mix015.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/mix015.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix015.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 03:02:26,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:02:26,889 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:02:26,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:02:26,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:02:26,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:02:26,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:02:26,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:02:26,929 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:02:26,934 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:02:26,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:02:26,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:02:26,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:02:26,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:02:26,936 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:02:26,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:02:26,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:02:26,937 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:02:26,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:02:26,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:02:26,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:02:26,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:02:26,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:02:26,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:02:26,939 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:02:26,939 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:02:26,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:02:26,939 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:02:26,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:02:26,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:02:26,941 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:02:26,941 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:02:26,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:02:26,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:02:26,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:02:26,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:02:26,942 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:02:26,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:02:26,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:02:26,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:02:26,943 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:02:26,943 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:02:26,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:02:26,943 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:02:27,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:02:27,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:02:27,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:02:27,217 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:02:27,219 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:02:27,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix015.opt.i [2024-06-28 03:02:28,262 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:02:28,489 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:02:28,490 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix015.opt.i [2024-06-28 03:02:28,501 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd3024347/92acd8e95e4e4eb1a840728bb46b63f9/FLAG86f93bfba [2024-06-28 03:02:28,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd3024347/92acd8e95e4e4eb1a840728bb46b63f9 [2024-06-28 03:02:28,516 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:02:28,516 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:02:28,517 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix015.opt.yml/witness.yml [2024-06-28 03:02:28,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:02:28,677 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:02:28,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:02:28,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:02:28,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:02:28,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:02:28" (1/2) ... [2024-06-28 03:02:28,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce0807b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:28, skipping insertion in model container [2024-06-28 03:02:28,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:02:28" (1/2) ... [2024-06-28 03:02:28,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6fc9817b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:02:28, skipping insertion in model container [2024-06-28 03:02:28,685 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:02:28" (2/2) ... [2024-06-28 03:02:28,686 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce0807b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:02:28, skipping insertion in model container [2024-06-28 03:02:28,686 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:02:28" (2/2) ... [2024-06-28 03:02:28,686 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:02:28,766 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:02:28,767 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0) [2024-06-28 03:02:28,768 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0) [2024-06-28 03:02:28,768 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0) [2024-06-28 03:02:28,768 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:02:28,768 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-28 03:02:28,802 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:02:29,110 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:02:29,127 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:02:29,231 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:02:29,263 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:02:29,264 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:02:29 WrapperNode [2024-06-28 03:02:29,264 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:02:29,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:02:29,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:02:29,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:02:29,270 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 03:02:29" (1/1) ... [2024-06-28 03:02:29,293 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 03:02:29" (1/1) ... [2024-06-28 03:02:29,333 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2024-06-28 03:02:29,341 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:02:29,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:02:29,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:02:29,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:02:29,350 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 03:02:29" (1/1) ... [2024-06-28 03:02:29,350 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 03:02:29" (1/1) ... [2024-06-28 03:02:29,359 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 03:02:29" (1/1) ... [2024-06-28 03:02:29,378 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 03:02:29,383 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 03:02:29" (1/1) ... [2024-06-28 03:02:29,384 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 03:02:29" (1/1) ... [2024-06-28 03:02:29,393 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 03:02:29" (1/1) ... [2024-06-28 03:02:29,402 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 03:02:29" (1/1) ... [2024-06-28 03:02:29,406 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 03:02:29" (1/1) ... [2024-06-28 03:02:29,410 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 03:02:29" (1/1) ... [2024-06-28 03:02:29,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:02:29,414 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:02:29,414 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:02:29,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:02:29,415 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 03:02:29" (1/1) ... [2024-06-28 03:02:29,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:02:29,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:02:29,456 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 03:02:29,485 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 03:02:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:02:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:02:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:02:29,499 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:02:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:02:29,499 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:02:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:02:29,499 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:02:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:02:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:02:29,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:02:29,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:02:29,501 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 03:02:29,631 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:02:29,633 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:02:29,914 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:02:29,914 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:02:30,035 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:02:30,035 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:02:30,035 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:02:30 BoogieIcfgContainer [2024-06-28 03:02:30,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:02:30,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:02:30,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:02:30,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:02:30,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:02:28" (1/4) ... [2024-06-28 03:02:30,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1109ccb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:02:30, skipping insertion in model container [2024-06-28 03:02:30,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:02:28" (2/4) ... [2024-06-28 03:02:30,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1109ccb5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:02:30, skipping insertion in model container [2024-06-28 03:02:30,040 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 03:02:29" (3/4) ... [2024-06-28 03:02:30,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1109ccb5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:02:30, skipping insertion in model container [2024-06-28 03:02:30,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:02:30" (4/4) ... [2024-06-28 03:02:30,041 INFO L112 eAbstractionObserver]: Analyzing ICFG mix015.opt.i [2024-06-28 03:02:30,053 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:02:30,054 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:02:30,054 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:02:30,085 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:02:30,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 43 transitions, 98 flow [2024-06-28 03:02:30,126 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-06-28 03:02:30,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:02:30,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:02:30,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 43 transitions, 98 flow [2024-06-28 03:02:30,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-06-28 03:02:30,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:02:30,140 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;@586e2fe7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:02:30,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:02:30,143 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:02:30,143 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:02:30,143 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:02:30,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:30,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:02:30,144 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 03:02:30,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:30,147 INFO L85 PathProgramCache]: Analyzing trace with hash 402627273, now seen corresponding path program 1 times [2024-06-28 03:02:30,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:30,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112979835] [2024-06-28 03:02:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:30,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:31,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:31,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112979835] [2024-06-28 03:02:31,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112979835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:31,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:31,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:02:31,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395282119] [2024-06-28 03:02:31,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:31,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:02:31,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:31,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:02:31,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:02:31,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-06-28 03:02:31,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:31,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:31,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-06-28 03:02:31,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:31,840 INFO L124 PetriNetUnfolderBase]: 1116/1782 cut-off events. [2024-06-28 03:02:31,840 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 03:02:31,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3533 conditions, 1782 events. 1116/1782 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9227 event pairs, 765 based on Foata normal form. 1/1708 useless extension candidates. Maximal degree in co-relation 3521. Up to 1676 conditions per place. [2024-06-28 03:02:31,862 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 31 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 03:02:31,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 173 flow [2024-06-28 03:02:31,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:02:31,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:02:31,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-06-28 03:02:31,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-06-28 03:02:31,895 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 83 transitions. [2024-06-28 03:02:31,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 173 flow [2024-06-28 03:02:31,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:02:31,906 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2024-06-28 03:02:31,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-28 03:02:31,910 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-06-28 03:02:31,911 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2024-06-28 03:02:31,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:31,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:31,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:31,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:02:31,911 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 03:02:31,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:31,912 INFO L85 PathProgramCache]: Analyzing trace with hash 377774120, now seen corresponding path program 1 times [2024-06-28 03:02:31,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:31,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104918885] [2024-06-28 03:02:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:31,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:32,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:32,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104918885] [2024-06-28 03:02:32,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104918885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:32,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:32,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:02:32,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215741154] [2024-06-28 03:02:32,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:32,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:02:32,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:32,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:02:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:02:32,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-28 03:02:32,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:32,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:32,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-28 03:02:32,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:32,872 INFO L124 PetriNetUnfolderBase]: 1280/1968 cut-off events. [2024-06-28 03:02:32,872 INFO L125 PetriNetUnfolderBase]: For 398/398 co-relation queries the response was YES. [2024-06-28 03:02:32,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4489 conditions, 1968 events. 1280/1968 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9889 event pairs, 750 based on Foata normal form. 3/1949 useless extension candidates. Maximal degree in co-relation 4477. Up to 1897 conditions per place. [2024-06-28 03:02:32,882 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 39 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 03:02:32,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 54 transitions, 242 flow [2024-06-28 03:02:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:02:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:02:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-06-28 03:02:32,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-06-28 03:02:32,885 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 4 states and 105 transitions. [2024-06-28 03:02:32,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 54 transitions, 242 flow [2024-06-28 03:02:32,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:02:32,888 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 140 flow [2024-06-28 03:02:32,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-28 03:02:32,889 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2024-06-28 03:02:32,889 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 140 flow [2024-06-28 03:02:32,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:32,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:32,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:32,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:02:32,892 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 03:02:32,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:32,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1173903438, now seen corresponding path program 1 times [2024-06-28 03:02:32,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:32,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427755139] [2024-06-28 03:02:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:32,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:33,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:33,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427755139] [2024-06-28 03:02:33,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427755139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:33,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:33,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:02:33,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125083441] [2024-06-28 03:02:33,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:33,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:02:33,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:33,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:02:33,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:02:33,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 03:02:33,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:33,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:33,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 03:02:33,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:34,117 INFO L124 PetriNetUnfolderBase]: 1558/2371 cut-off events. [2024-06-28 03:02:34,117 INFO L125 PetriNetUnfolderBase]: For 1303/1303 co-relation queries the response was YES. [2024-06-28 03:02:34,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5987 conditions, 2371 events. 1558/2371 cut-off events. For 1303/1303 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11778 event pairs, 839 based on Foata normal form. 3/2362 useless extension candidates. Maximal degree in co-relation 5973. Up to 2286 conditions per place. [2024-06-28 03:02:34,126 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 47 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-06-28 03:02:34,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 322 flow [2024-06-28 03:02:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:02:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:02:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 03:02:34,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-06-28 03:02:34,128 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 140 flow. Second operand 5 states and 125 transitions. [2024-06-28 03:02:34,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 322 flow [2024-06-28 03:02:34,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 308 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 03:02:34,130 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 176 flow [2024-06-28 03:02:34,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 03:02:34,131 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2024-06-28 03:02:34,131 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 176 flow [2024-06-28 03:02:34,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:34,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:34,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:34,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:02:34,131 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 03:02:34,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash -950747879, now seen corresponding path program 1 times [2024-06-28 03:02:34,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:34,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674557760] [2024-06-28 03:02:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:34,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:35,069 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 03:02:35,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:35,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674557760] [2024-06-28 03:02:35,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674557760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:35,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:35,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:02:35,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054026311] [2024-06-28 03:02:35,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:35,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:02:35,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:35,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:02:35,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:02:35,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 03:02:35,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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 03:02:35,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:35,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 03:02:35,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:35,448 INFO L124 PetriNetUnfolderBase]: 1552/2375 cut-off events. [2024-06-28 03:02:35,448 INFO L125 PetriNetUnfolderBase]: For 2422/2422 co-relation queries the response was YES. [2024-06-28 03:02:35,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6561 conditions, 2375 events. 1552/2375 cut-off events. For 2422/2422 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11924 event pairs, 697 based on Foata normal form. 3/2373 useless extension candidates. Maximal degree in co-relation 6546. Up to 2262 conditions per place. [2024-06-28 03:02:35,483 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 54 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-28 03:02:35,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 400 flow [2024-06-28 03:02:35,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:02:35,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:02:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 03:02:35,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-06-28 03:02:35,485 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 176 flow. Second operand 6 states and 148 transitions. [2024-06-28 03:02:35,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 400 flow [2024-06-28 03:02:35,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 74 transitions, 376 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:02:35,487 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 212 flow [2024-06-28 03:02:35,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-28 03:02:35,488 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-06-28 03:02:35,488 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 212 flow [2024-06-28 03:02:35,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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 03:02:35,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:35,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:35,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:02:35,489 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:35,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:35,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1246508503, now seen corresponding path program 1 times [2024-06-28 03:02:35,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:35,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678975382] [2024-06-28 03:02:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:35,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:36,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:36,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:36,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678975382] [2024-06-28 03:02:36,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678975382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:36,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:36,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:02:36,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621620913] [2024-06-28 03:02:36,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:36,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:02:36,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:36,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:02:36,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:02:36,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:02:36,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:36,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:36,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:02:36,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:36,578 INFO L124 PetriNetUnfolderBase]: 1495/2422 cut-off events. [2024-06-28 03:02:36,578 INFO L125 PetriNetUnfolderBase]: For 3673/3673 co-relation queries the response was YES. [2024-06-28 03:02:36,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7038 conditions, 2422 events. 1495/2422 cut-off events. For 3673/3673 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12725 event pairs, 734 based on Foata normal form. 4/2418 useless extension candidates. Maximal degree in co-relation 7021. Up to 2212 conditions per place. [2024-06-28 03:02:36,590 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 45 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-06-28 03:02:36,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 364 flow [2024-06-28 03:02:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:02:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:02:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-28 03:02:36,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49767441860465117 [2024-06-28 03:02:36,592 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 212 flow. Second operand 5 states and 107 transitions. [2024-06-28 03:02:36,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 364 flow [2024-06-28 03:02:36,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 330 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:02:36,600 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 224 flow [2024-06-28 03:02:36,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-28 03:02:36,602 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2024-06-28 03:02:36,602 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 224 flow [2024-06-28 03:02:36,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:36,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:36,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:36,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:02:36,604 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 03:02:36,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash 649599816, now seen corresponding path program 1 times [2024-06-28 03:02:36,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:36,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024756465] [2024-06-28 03:02:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:37,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:37,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:37,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024756465] [2024-06-28 03:02:37,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024756465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:37,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:37,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:02:37,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625293205] [2024-06-28 03:02:37,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:37,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:02:37,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:37,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:02:37,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:02:37,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:02:37,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 03:02:37,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:37,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:02:37,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:37,974 INFO L124 PetriNetUnfolderBase]: 1746/2688 cut-off events. [2024-06-28 03:02:37,974 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2024-06-28 03:02:37,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8554 conditions, 2688 events. 1746/2688 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13395 event pairs, 828 based on Foata normal form. 4/2690 useless extension candidates. Maximal degree in co-relation 8535. Up to 2516 conditions per place. [2024-06-28 03:02:37,988 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 55 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2024-06-28 03:02:37,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 78 transitions, 482 flow [2024-06-28 03:02:37,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:02:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:02:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-28 03:02:37,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5038759689922481 [2024-06-28 03:02:37,990 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 224 flow. Second operand 6 states and 130 transitions. [2024-06-28 03:02:37,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 78 transitions, 482 flow [2024-06-28 03:02:37,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 460 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:02:37,993 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 288 flow [2024-06-28 03:02:37,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-06-28 03:02:37,994 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2024-06-28 03:02:37,994 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 288 flow [2024-06-28 03:02:37,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 03:02:37,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:37,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:37,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:02:37,995 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 03:02:37,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:37,995 INFO L85 PathProgramCache]: Analyzing trace with hash 657910296, now seen corresponding path program 2 times [2024-06-28 03:02:37,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:37,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235168192] [2024-06-28 03:02:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:37,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:38,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:38,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235168192] [2024-06-28 03:02:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235168192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:38,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:38,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:02:38,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102004026] [2024-06-28 03:02:38,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:38,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:02:38,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:38,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:02:38,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:02:38,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:02:38,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 03:02:38,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:38,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:02:38,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:39,257 INFO L124 PetriNetUnfolderBase]: 1736/2676 cut-off events. [2024-06-28 03:02:39,257 INFO L125 PetriNetUnfolderBase]: For 8105/8115 co-relation queries the response was YES. [2024-06-28 03:02:39,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9144 conditions, 2676 events. 1736/2676 cut-off events. For 8105/8115 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13333 event pairs, 827 based on Foata normal form. 14/2689 useless extension candidates. Maximal degree in co-relation 9124. Up to 2508 conditions per place. [2024-06-28 03:02:39,279 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 49 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-28 03:02:39,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 72 transitions, 460 flow [2024-06-28 03:02:39,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:02:39,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:02:39,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-28 03:02:39,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-06-28 03:02:39,281 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 288 flow. Second operand 6 states and 124 transitions. [2024-06-28 03:02:39,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 72 transitions, 460 flow [2024-06-28 03:02:39,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 428 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 03:02:39,286 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 296 flow [2024-06-28 03:02:39,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-28 03:02:39,287 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2024-06-28 03:02:39,288 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 296 flow [2024-06-28 03:02:39,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 03:02:39,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:39,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:39,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:02:39,289 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:39,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1432569102, now seen corresponding path program 1 times [2024-06-28 03:02:39,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:39,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795651226] [2024-06-28 03:02:39,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:39,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:40,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:40,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795651226] [2024-06-28 03:02:40,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795651226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:40,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:40,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:02:40,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291127515] [2024-06-28 03:02:40,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:40,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:02:40,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:40,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:02:40,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:02:40,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:02:40,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 296 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:40,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:40,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:02:40,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:40,956 INFO L124 PetriNetUnfolderBase]: 1823/2768 cut-off events. [2024-06-28 03:02:40,956 INFO L125 PetriNetUnfolderBase]: For 9784/9784 co-relation queries the response was YES. [2024-06-28 03:02:40,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9688 conditions, 2768 events. 1823/2768 cut-off events. For 9784/9784 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13605 event pairs, 592 based on Foata normal form. 6/2773 useless extension candidates. Maximal degree in co-relation 9667. Up to 2610 conditions per place. [2024-06-28 03:02:40,968 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 75 selfloop transitions, 18 changer transitions 0/99 dead transitions. [2024-06-28 03:02:40,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 608 flow [2024-06-28 03:02:40,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:02:40,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:02:40,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 03:02:40,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319767441860465 [2024-06-28 03:02:40,970 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 296 flow. Second operand 8 states and 183 transitions. [2024-06-28 03:02:40,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 608 flow [2024-06-28 03:02:40,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 99 transitions, 568 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:02:40,976 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 333 flow [2024-06-28 03:02:40,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=333, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-28 03:02:40,976 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-06-28 03:02:40,976 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 333 flow [2024-06-28 03:02:40,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:40,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:40,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:40,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:02:40,977 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 03:02:40,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash 212596114, now seen corresponding path program 1 times [2024-06-28 03:02:40,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:40,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774866238] [2024-06-28 03:02:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:40,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:41,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:41,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774866238] [2024-06-28 03:02:41,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774866238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:41,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:41,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:02:41,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627218871] [2024-06-28 03:02:41,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:41,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:02:41,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:02:41,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:02:41,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:41,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 333 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:41,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:41,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:41,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:42,403 INFO L124 PetriNetUnfolderBase]: 1845/2795 cut-off events. [2024-06-28 03:02:42,403 INFO L125 PetriNetUnfolderBase]: For 12597/12597 co-relation queries the response was YES. [2024-06-28 03:02:42,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10392 conditions, 2795 events. 1845/2795 cut-off events. For 12597/12597 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13654 event pairs, 635 based on Foata normal form. 4/2797 useless extension candidates. Maximal degree in co-relation 10369. Up to 2586 conditions per place. [2024-06-28 03:02:42,413 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 67 selfloop transitions, 24 changer transitions 0/96 dead transitions. [2024-06-28 03:02:42,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 675 flow [2024-06-28 03:02:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:02:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:02:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-28 03:02:42,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4850498338870432 [2024-06-28 03:02:42,415 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 333 flow. Second operand 7 states and 146 transitions. [2024-06-28 03:02:42,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 675 flow [2024-06-28 03:02:42,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 624 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 03:02:42,421 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 396 flow [2024-06-28 03:02:42,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2024-06-28 03:02:42,422 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2024-06-28 03:02:42,422 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 396 flow [2024-06-28 03:02:42,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:42,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:42,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:42,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:02:42,422 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 03:02:42,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:42,423 INFO L85 PathProgramCache]: Analyzing trace with hash 212775604, now seen corresponding path program 2 times [2024-06-28 03:02:42,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:42,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831594192] [2024-06-28 03:02:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:42,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:43,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:43,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831594192] [2024-06-28 03:02:43,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831594192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:43,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:43,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:02:43,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305849099] [2024-06-28 03:02:43,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:43,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:02:43,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:43,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:02:43,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:02:43,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:43,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 396 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:43,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:43,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:43,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:43,883 INFO L124 PetriNetUnfolderBase]: 1867/2827 cut-off events. [2024-06-28 03:02:43,883 INFO L125 PetriNetUnfolderBase]: For 15849/15849 co-relation queries the response was YES. [2024-06-28 03:02:43,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11131 conditions, 2827 events. 1867/2827 cut-off events. For 15849/15849 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13781 event pairs, 635 based on Foata normal form. 4/2829 useless extension candidates. Maximal degree in co-relation 11106. Up to 2605 conditions per place. [2024-06-28 03:02:43,896 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 65 selfloop transitions, 26 changer transitions 0/96 dead transitions. [2024-06-28 03:02:43,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 96 transitions, 714 flow [2024-06-28 03:02:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:02:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:02:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-28 03:02:43,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47840531561461797 [2024-06-28 03:02:43,898 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 396 flow. Second operand 7 states and 144 transitions. [2024-06-28 03:02:43,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 96 transitions, 714 flow [2024-06-28 03:02:43,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 668 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 03:02:43,911 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 442 flow [2024-06-28 03:02:43,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-06-28 03:02:43,912 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-06-28 03:02:43,914 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 442 flow [2024-06-28 03:02:43,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:43,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:43,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:43,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:02:43,914 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 03:02:43,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:43,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1079615854, now seen corresponding path program 3 times [2024-06-28 03:02:43,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:43,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263587566] [2024-06-28 03:02:43,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:43,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:44,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:44,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263587566] [2024-06-28 03:02:44,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263587566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:44,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:44,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:02:44,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550972824] [2024-06-28 03:02:44,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:44,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:02:44,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:44,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:02:44,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:02:44,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:44,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 442 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:44,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:44,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:44,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:45,348 INFO L124 PetriNetUnfolderBase]: 1857/2816 cut-off events. [2024-06-28 03:02:45,348 INFO L125 PetriNetUnfolderBase]: For 18378/18388 co-relation queries the response was YES. [2024-06-28 03:02:45,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11367 conditions, 2816 events. 1857/2816 cut-off events. For 18378/18388 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13802 event pairs, 646 based on Foata normal form. 11/2826 useless extension candidates. Maximal degree in co-relation 11340. Up to 2597 conditions per place. [2024-06-28 03:02:45,361 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 59 selfloop transitions, 26 changer transitions 0/90 dead transitions. [2024-06-28 03:02:45,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 666 flow [2024-06-28 03:02:45,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:02:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:02:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 03:02:45,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584717607973422 [2024-06-28 03:02:45,363 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 442 flow. Second operand 7 states and 138 transitions. [2024-06-28 03:02:45,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 666 flow [2024-06-28 03:02:45,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 602 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:02:45,376 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 438 flow [2024-06-28 03:02:45,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-06-28 03:02:45,377 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2024-06-28 03:02:45,377 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 438 flow [2024-06-28 03:02:45,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:45,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:45,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:45,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:02:45,378 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 03:02:45,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2132121964, now seen corresponding path program 1 times [2024-06-28 03:02:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:45,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109227357] [2024-06-28 03:02:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:45,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:46,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:46,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109227357] [2024-06-28 03:02:46,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109227357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:46,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:46,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:02:46,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436301641] [2024-06-28 03:02:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:02:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:46,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:02:46,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:02:46,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:02:46,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:46,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:46,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:02:46,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:47,009 INFO L124 PetriNetUnfolderBase]: 1532/2454 cut-off events. [2024-06-28 03:02:47,009 INFO L125 PetriNetUnfolderBase]: For 17391/17391 co-relation queries the response was YES. [2024-06-28 03:02:47,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9863 conditions, 2454 events. 1532/2454 cut-off events. For 17391/17391 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12779 event pairs, 547 based on Foata normal form. 4/2442 useless extension candidates. Maximal degree in co-relation 9835. Up to 2219 conditions per place. [2024-06-28 03:02:47,020 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 69 selfloop transitions, 13 changer transitions 0/93 dead transitions. [2024-06-28 03:02:47,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 695 flow [2024-06-28 03:02:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:02:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:02:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 03:02:47,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750830564784053 [2024-06-28 03:02:47,021 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 438 flow. Second operand 7 states and 143 transitions. [2024-06-28 03:02:47,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 695 flow [2024-06-28 03:02:47,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 93 transitions, 614 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:02:47,032 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 443 flow [2024-06-28 03:02:47,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=443, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-06-28 03:02:47,033 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 30 predicate places. [2024-06-28 03:02:47,033 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 443 flow [2024-06-28 03:02:47,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:47,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:47,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:47,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:02:47,034 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:47,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:47,034 INFO L85 PathProgramCache]: Analyzing trace with hash -683826412, now seen corresponding path program 1 times [2024-06-28 03:02:47,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:47,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710096384] [2024-06-28 03:02:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:47,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:47,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:47,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710096384] [2024-06-28 03:02:47,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710096384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:47,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:47,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:02:47,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964549335] [2024-06-28 03:02:47,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:47,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:02:47,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:47,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:02:47,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:02:47,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 03:02:47,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 443 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:47,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:47,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 03:02:47,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:48,071 INFO L124 PetriNetUnfolderBase]: 1428/2352 cut-off events. [2024-06-28 03:02:48,072 INFO L125 PetriNetUnfolderBase]: For 19904/19904 co-relation queries the response was YES. [2024-06-28 03:02:48,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9934 conditions, 2352 events. 1428/2352 cut-off events. For 19904/19904 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12639 event pairs, 556 based on Foata normal form. 1/2352 useless extension candidates. Maximal degree in co-relation 9904. Up to 2130 conditions per place. [2024-06-28 03:02:48,084 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 63 selfloop transitions, 8 changer transitions 0/84 dead transitions. [2024-06-28 03:02:48,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 84 transitions, 627 flow [2024-06-28 03:02:48,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:02:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:02:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-28 03:02:48,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 03:02:48,085 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 443 flow. Second operand 5 states and 105 transitions. [2024-06-28 03:02:48,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 84 transitions, 627 flow [2024-06-28 03:02:48,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 84 transitions, 586 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:02:48,097 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 452 flow [2024-06-28 03:02:48,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-06-28 03:02:48,098 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-06-28 03:02:48,098 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 452 flow [2024-06-28 03:02:48,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:48,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:48,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:48,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:02:48,099 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 03:02:48,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:48,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1648445975, now seen corresponding path program 1 times [2024-06-28 03:02:48,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:48,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925592430] [2024-06-28 03:02:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:48,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:48,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:48,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925592430] [2024-06-28 03:02:48,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925592430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:48,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:48,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:02:48,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021623596] [2024-06-28 03:02:48,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:48,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:02:48,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:48,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:02:48,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:02:48,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:48,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 452 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:48,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:48,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:48,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:49,719 INFO L124 PetriNetUnfolderBase]: 1868/2825 cut-off events. [2024-06-28 03:02:49,719 INFO L125 PetriNetUnfolderBase]: For 27082/27082 co-relation queries the response was YES. [2024-06-28 03:02:49,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12560 conditions, 2825 events. 1868/2825 cut-off events. For 27082/27082 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13802 event pairs, 588 based on Foata normal form. 4/2827 useless extension candidates. Maximal degree in co-relation 12529. Up to 2531 conditions per place. [2024-06-28 03:02:49,730 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 78 selfloop transitions, 37 changer transitions 0/120 dead transitions. [2024-06-28 03:02:49,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 120 transitions, 898 flow [2024-06-28 03:02:49,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:02:49,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:02:49,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-28 03:02:49,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-06-28 03:02:49,732 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 452 flow. Second operand 8 states and 168 transitions. [2024-06-28 03:02:49,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 120 transitions, 898 flow [2024-06-28 03:02:49,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 120 transitions, 870 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 03:02:49,746 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 576 flow [2024-06-28 03:02:49,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=576, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2024-06-28 03:02:49,747 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2024-06-28 03:02:49,747 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 576 flow [2024-06-28 03:02:49,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:49,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:49,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:49,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:02:49,748 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 03:02:49,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:49,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1648296245, now seen corresponding path program 2 times [2024-06-28 03:02:49,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:49,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707631447] [2024-06-28 03:02:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:49,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:50,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:50,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707631447] [2024-06-28 03:02:50,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707631447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:50,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:50,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:02:50,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97140011] [2024-06-28 03:02:50,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:50,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:02:50,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:50,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:02:50,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:02:50,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:50,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 576 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:50,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:50,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:50,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:51,315 INFO L124 PetriNetUnfolderBase]: 1890/2857 cut-off events. [2024-06-28 03:02:51,316 INFO L125 PetriNetUnfolderBase]: For 31661/31661 co-relation queries the response was YES. [2024-06-28 03:02:51,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13457 conditions, 2857 events. 1890/2857 cut-off events. For 31661/31661 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13922 event pairs, 588 based on Foata normal form. 4/2859 useless extension candidates. Maximal degree in co-relation 13425. Up to 2550 conditions per place. [2024-06-28 03:02:51,331 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 77 selfloop transitions, 38 changer transitions 0/120 dead transitions. [2024-06-28 03:02:51,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 120 transitions, 992 flow [2024-06-28 03:02:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:02:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:02:51,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 03:02:51,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48255813953488375 [2024-06-28 03:02:51,333 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 576 flow. Second operand 8 states and 166 transitions. [2024-06-28 03:02:51,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 120 transitions, 992 flow [2024-06-28 03:02:51,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 120 transitions, 913 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 03:02:51,360 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 619 flow [2024-06-28 03:02:51,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=619, PETRI_PLACES=84, PETRI_TRANSITIONS=85} [2024-06-28 03:02:51,361 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 40 predicate places. [2024-06-28 03:02:51,361 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 619 flow [2024-06-28 03:02:51,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:51,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:51,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:51,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:02:51,362 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 03:02:51,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1642732055, now seen corresponding path program 3 times [2024-06-28 03:02:51,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:51,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27255439] [2024-06-28 03:02:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:51,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:52,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:52,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27255439] [2024-06-28 03:02:52,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27255439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:52,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:52,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:02:52,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215799161] [2024-06-28 03:02:52,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:52,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:02:52,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:52,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:02:52,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:02:52,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:52,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 619 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:52,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:52,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:52,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:52,941 INFO L124 PetriNetUnfolderBase]: 1912/2889 cut-off events. [2024-06-28 03:02:52,942 INFO L125 PetriNetUnfolderBase]: For 35265/35265 co-relation queries the response was YES. [2024-06-28 03:02:52,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13827 conditions, 2889 events. 1912/2889 cut-off events. For 35265/35265 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14071 event pairs, 593 based on Foata normal form. 4/2891 useless extension candidates. Maximal degree in co-relation 13793. Up to 2569 conditions per place. [2024-06-28 03:02:52,954 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 75 selfloop transitions, 40 changer transitions 0/120 dead transitions. [2024-06-28 03:02:52,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 1029 flow [2024-06-28 03:02:52,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:02:52,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:02:52,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 03:02:52,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-28 03:02:52,956 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 619 flow. Second operand 8 states and 164 transitions. [2024-06-28 03:02:52,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 1029 flow [2024-06-28 03:02:52,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 120 transitions, 951 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:02:52,980 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 665 flow [2024-06-28 03:02:52,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=665, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2024-06-28 03:02:52,981 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2024-06-28 03:02:52,981 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 665 flow [2024-06-28 03:02:52,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:52,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:52,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:52,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:02:52,981 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:52,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:52,982 INFO L85 PathProgramCache]: Analyzing trace with hash 891648375, now seen corresponding path program 4 times [2024-06-28 03:02:52,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:52,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176639691] [2024-06-28 03:02:52,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:52,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:53,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:53,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176639691] [2024-06-28 03:02:53,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176639691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:53,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:53,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:02:53,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567193242] [2024-06-28 03:02:53,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:53,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:02:53,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:53,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:02:53,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:02:53,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:53,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 665 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:53,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:53,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:53,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:54,549 INFO L124 PetriNetUnfolderBase]: 1902/2879 cut-off events. [2024-06-28 03:02:54,550 INFO L125 PetriNetUnfolderBase]: For 38808/38814 co-relation queries the response was YES. [2024-06-28 03:02:54,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13954 conditions, 2879 events. 1902/2879 cut-off events. For 38808/38814 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14056 event pairs, 616 based on Foata normal form. 7/2885 useless extension candidates. Maximal degree in co-relation 13919. Up to 2561 conditions per place. [2024-06-28 03:02:54,563 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 70 selfloop transitions, 40 changer transitions 0/115 dead transitions. [2024-06-28 03:02:54,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 959 flow [2024-06-28 03:02:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:02:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:02:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 03:02:54,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-28 03:02:54,565 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 665 flow. Second operand 8 states and 158 transitions. [2024-06-28 03:02:54,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 959 flow [2024-06-28 03:02:54,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 115 transitions, 868 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:02:54,592 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 662 flow [2024-06-28 03:02:54,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=662, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-06-28 03:02:54,592 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 46 predicate places. [2024-06-28 03:02:54,592 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 662 flow [2024-06-28 03:02:54,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:54,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:54,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:54,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:02:54,593 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:02:54,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:54,594 INFO L85 PathProgramCache]: Analyzing trace with hash 232426522, now seen corresponding path program 1 times [2024-06-28 03:02:54,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:54,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024418531] [2024-06-28 03:02:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:54,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:55,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024418531] [2024-06-28 03:02:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024418531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:55,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:55,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:02:55,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805793251] [2024-06-28 03:02:55,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:55,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:02:55,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:55,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:02:55,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:02:55,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-28 03:02:55,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 662 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:55,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:55,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-28 03:02:55,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:56,006 INFO L124 PetriNetUnfolderBase]: 1461/2407 cut-off events. [2024-06-28 03:02:56,007 INFO L125 PetriNetUnfolderBase]: For 34808/34808 co-relation queries the response was YES. [2024-06-28 03:02:56,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11752 conditions, 2407 events. 1461/2407 cut-off events. For 34808/34808 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12900 event pairs, 528 based on Foata normal form. 1/2405 useless extension candidates. Maximal degree in co-relation 11716. Up to 2140 conditions per place. [2024-06-28 03:02:56,020 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 72 selfloop transitions, 11 changer transitions 0/100 dead transitions. [2024-06-28 03:02:56,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 100 transitions, 876 flow [2024-06-28 03:02:56,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:02:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:02:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-28 03:02:56,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2024-06-28 03:02:56,021 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 662 flow. Second operand 6 states and 122 transitions. [2024-06-28 03:02:56,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 100 transitions, 876 flow [2024-06-28 03:02:56,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 100 transitions, 741 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:02:56,041 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 587 flow [2024-06-28 03:02:56,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=587, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2024-06-28 03:02:56,041 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 42 predicate places. [2024-06-28 03:02:56,042 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 587 flow [2024-06-28 03:02:56,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:56,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:56,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:56,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:02:56,042 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 03:02:56,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash 442247839, now seen corresponding path program 1 times [2024-06-28 03:02:56,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:56,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099431689] [2024-06-28 03:02:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:56,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:56,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:56,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099431689] [2024-06-28 03:02:56,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099431689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:56,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:56,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:02:56,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711661890] [2024-06-28 03:02:56,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:56,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:02:56,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:56,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:02:56,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:02:57,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:57,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 587 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:57,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:57,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:57,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:57,726 INFO L124 PetriNetUnfolderBase]: 1918/2907 cut-off events. [2024-06-28 03:02:57,726 INFO L125 PetriNetUnfolderBase]: For 45753/45753 co-relation queries the response was YES. [2024-06-28 03:02:57,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14516 conditions, 2907 events. 1918/2907 cut-off events. For 45753/45753 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14177 event pairs, 628 based on Foata normal form. 4/2910 useless extension candidates. Maximal degree in co-relation 14480. Up to 2762 conditions per place. [2024-06-28 03:02:57,742 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 109 selfloop transitions, 20 changer transitions 0/134 dead transitions. [2024-06-28 03:02:57,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 134 transitions, 985 flow [2024-06-28 03:02:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:57,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:02:57,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-28 03:02:57,743 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 587 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:02:57,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 134 transitions, 985 flow [2024-06-28 03:02:57,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 134 transitions, 947 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:02:57,762 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 639 flow [2024-06-28 03:02:57,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=639, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2024-06-28 03:02:57,763 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 47 predicate places. [2024-06-28 03:02:57,763 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 639 flow [2024-06-28 03:02:57,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:57,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:57,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:57,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:02:57,764 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 03:02:57,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1858158861, now seen corresponding path program 2 times [2024-06-28 03:02:57,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:57,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392081451] [2024-06-28 03:02:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:57,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:02:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:02:58,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:02:58,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392081451] [2024-06-28 03:02:58,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392081451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:02:58,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:02:58,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:02:58,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688768648] [2024-06-28 03:02:58,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:02:58,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:02:58,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:02:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:02:58,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:02:58,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:02:58,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 639 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:58,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:02:58,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:02:58,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:02:59,547 INFO L124 PetriNetUnfolderBase]: 1940/2947 cut-off events. [2024-06-28 03:02:59,547 INFO L125 PetriNetUnfolderBase]: For 51013/51013 co-relation queries the response was YES. [2024-06-28 03:02:59,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15293 conditions, 2947 events. 1940/2947 cut-off events. For 51013/51013 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14501 event pairs, 544 based on Foata normal form. 4/2949 useless extension candidates. Maximal degree in co-relation 15256. Up to 2512 conditions per place. [2024-06-28 03:02:59,559 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 87 selfloop transitions, 51 changer transitions 0/143 dead transitions. [2024-06-28 03:02:59,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 143 transitions, 1187 flow [2024-06-28 03:02:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:02:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:02:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 03:02:59,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48578811369509045 [2024-06-28 03:02:59,561 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 639 flow. Second operand 9 states and 188 transitions. [2024-06-28 03:02:59,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 143 transitions, 1187 flow [2024-06-28 03:02:59,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 143 transitions, 1121 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:02:59,585 INFO L231 Difference]: Finished difference. Result has 93 places, 100 transitions, 773 flow [2024-06-28 03:02:59,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=773, PETRI_PLACES=93, PETRI_TRANSITIONS=100} [2024-06-28 03:02:59,586 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2024-06-28 03:02:59,586 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 100 transitions, 773 flow [2024-06-28 03:02:59,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:02:59,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:02:59,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:02:59,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:02:59,586 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 03:02:59,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:02:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1853517231, now seen corresponding path program 3 times [2024-06-28 03:02:59,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:02:59,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642086840] [2024-06-28 03:02:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:02:59,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:02:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:00,492 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 03:03:00,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:00,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642086840] [2024-06-28 03:03:00,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642086840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:00,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:00,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:00,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176269142] [2024-06-28 03:03:00,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:00,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:00,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:00,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:00,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:00,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:00,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 100 transitions, 773 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:00,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:00,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:00,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:01,523 INFO L124 PetriNetUnfolderBase]: 1962/2989 cut-off events. [2024-06-28 03:03:01,524 INFO L125 PetriNetUnfolderBase]: For 57694/57694 co-relation queries the response was YES. [2024-06-28 03:03:01,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16157 conditions, 2989 events. 1962/2989 cut-off events. For 57694/57694 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14810 event pairs, 549 based on Foata normal form. 4/2991 useless extension candidates. Maximal degree in co-relation 16119. Up to 2531 conditions per place. [2024-06-28 03:03:01,542 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 86 selfloop transitions, 52 changer transitions 0/143 dead transitions. [2024-06-28 03:03:01,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 143 transitions, 1281 flow [2024-06-28 03:03:01,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:01,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-28 03:03:01,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-06-28 03:03:01,544 INFO L175 Difference]: Start difference. First operand has 93 places, 100 transitions, 773 flow. Second operand 9 states and 186 transitions. [2024-06-28 03:03:01,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 143 transitions, 1281 flow [2024-06-28 03:03:01,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 143 transitions, 1186 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:01,578 INFO L231 Difference]: Finished difference. Result has 97 places, 103 transitions, 838 flow [2024-06-28 03:03:01,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=838, PETRI_PLACES=97, PETRI_TRANSITIONS=103} [2024-06-28 03:03:01,578 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2024-06-28 03:03:01,578 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 103 transitions, 838 flow [2024-06-28 03:03:01,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:01,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:01,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:01,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:03:01,579 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 03:03:01,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:01,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1680781077, now seen corresponding path program 1 times [2024-06-28 03:03:01,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:01,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613967311] [2024-06-28 03:03:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:01,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:02,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:02,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613967311] [2024-06-28 03:03:02,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613967311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:02,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:02,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:02,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951356265] [2024-06-28 03:03:02,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:02,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:02,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:02,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:02,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:02,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:03:02,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 103 transitions, 838 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:02,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:02,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:03:02,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:03,219 INFO L124 PetriNetUnfolderBase]: 1893/2953 cut-off events. [2024-06-28 03:03:03,219 INFO L125 PetriNetUnfolderBase]: For 63462/63464 co-relation queries the response was YES. [2024-06-28 03:03:03,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16379 conditions, 2953 events. 1893/2953 cut-off events. For 63462/63464 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15154 event pairs, 629 based on Foata normal form. 6/2950 useless extension candidates. Maximal degree in co-relation 16339. Up to 2678 conditions per place. [2024-06-28 03:03:03,236 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 103 selfloop transitions, 30 changer transitions 0/143 dead transitions. [2024-06-28 03:03:03,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 143 transitions, 1302 flow [2024-06-28 03:03:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:03:03,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-28 03:03:03,237 INFO L175 Difference]: Start difference. First operand has 97 places, 103 transitions, 838 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:03:03,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 143 transitions, 1302 flow [2024-06-28 03:03:03,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 143 transitions, 1181 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:03,263 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 953 flow [2024-06-28 03:03:03,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=953, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2024-06-28 03:03:03,264 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 60 predicate places. [2024-06-28 03:03:03,264 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 953 flow [2024-06-28 03:03:03,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:03,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:03,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:03,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:03:03,264 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 03:03:03,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:03,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1048264393, now seen corresponding path program 2 times [2024-06-28 03:03:03,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:03,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578150949] [2024-06-28 03:03:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:03,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:04,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:04,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:04,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578150949] [2024-06-28 03:03:04,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578150949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:04,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:04,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:04,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504943534] [2024-06-28 03:03:04,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:04,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:04,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:04,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:04,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:04,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:03:04,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 953 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:04,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:04,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:03:04,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:04,939 INFO L124 PetriNetUnfolderBase]: 1970/3074 cut-off events. [2024-06-28 03:03:04,939 INFO L125 PetriNetUnfolderBase]: For 70120/70122 co-relation queries the response was YES. [2024-06-28 03:03:04,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17640 conditions, 3074 events. 1970/3074 cut-off events. For 70120/70122 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15820 event pairs, 618 based on Foata normal form. 6/3078 useless extension candidates. Maximal degree in co-relation 17595. Up to 2756 conditions per place. [2024-06-28 03:03:04,955 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 112 selfloop transitions, 53 changer transitions 0/175 dead transitions. [2024-06-28 03:03:04,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 175 transitions, 1666 flow [2024-06-28 03:03:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:04,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:04,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 03:03:04,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2024-06-28 03:03:04,957 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 953 flow. Second operand 9 states and 183 transitions. [2024-06-28 03:03:04,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 175 transitions, 1666 flow [2024-06-28 03:03:04,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 175 transitions, 1563 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-28 03:03:04,995 INFO L231 Difference]: Finished difference. Result has 114 places, 143 transitions, 1315 flow [2024-06-28 03:03:04,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1315, PETRI_PLACES=114, PETRI_TRANSITIONS=143} [2024-06-28 03:03:04,996 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 70 predicate places. [2024-06-28 03:03:04,996 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 143 transitions, 1315 flow [2024-06-28 03:03:04,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:04,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:04,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:04,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:03:04,996 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 03:03:04,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:04,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1681027341, now seen corresponding path program 4 times [2024-06-28 03:03:04,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:04,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879010906] [2024-06-28 03:03:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:04,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:05,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:05,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879010906] [2024-06-28 03:03:05,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879010906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:05,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:05,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133214590] [2024-06-28 03:03:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:05,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:05,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:05,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:05,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:05,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:05,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 143 transitions, 1315 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:05,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:05,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:05,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:06,778 INFO L124 PetriNetUnfolderBase]: 2112/3249 cut-off events. [2024-06-28 03:03:06,779 INFO L125 PetriNetUnfolderBase]: For 77522/77522 co-relation queries the response was YES. [2024-06-28 03:03:06,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19106 conditions, 3249 events. 2112/3249 cut-off events. For 77522/77522 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16390 event pairs, 572 based on Foata normal form. 4/3251 useless extension candidates. Maximal degree in co-relation 19056. Up to 2655 conditions per place. [2024-06-28 03:03:06,798 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 100 selfloop transitions, 78 changer transitions 0/183 dead transitions. [2024-06-28 03:03:06,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 183 transitions, 1940 flow [2024-06-28 03:03:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:06,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-28 03:03:06,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4754521963824289 [2024-06-28 03:03:06,800 INFO L175 Difference]: Start difference. First operand has 114 places, 143 transitions, 1315 flow. Second operand 9 states and 184 transitions. [2024-06-28 03:03:06,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 183 transitions, 1940 flow [2024-06-28 03:03:06,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 183 transitions, 1836 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:06,854 INFO L231 Difference]: Finished difference. Result has 119 places, 146 transitions, 1418 flow [2024-06-28 03:03:06,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1418, PETRI_PLACES=119, PETRI_TRANSITIONS=146} [2024-06-28 03:03:06,854 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 75 predicate places. [2024-06-28 03:03:06,855 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 146 transitions, 1418 flow [2024-06-28 03:03:06,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:06,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:06,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:06,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:03:06,855 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:06,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:06,856 INFO L85 PathProgramCache]: Analyzing trace with hash 3684283, now seen corresponding path program 1 times [2024-06-28 03:03:06,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:06,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119323917] [2024-06-28 03:03:06,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:07,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119323917] [2024-06-28 03:03:07,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119323917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:07,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:07,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:03:07,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315865775] [2024-06-28 03:03:07,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:07,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:03:07,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:07,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:03:07,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:03:07,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:03:07,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 146 transitions, 1418 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:07,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:07,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:03:07,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:08,107 INFO L124 PetriNetUnfolderBase]: 1851/2943 cut-off events. [2024-06-28 03:03:08,108 INFO L125 PetriNetUnfolderBase]: For 81505/81515 co-relation queries the response was YES. [2024-06-28 03:03:08,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18322 conditions, 2943 events. 1851/2943 cut-off events. For 81505/81515 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15445 event pairs, 590 based on Foata normal form. 1/2918 useless extension candidates. Maximal degree in co-relation 18271. Up to 2706 conditions per place. [2024-06-28 03:03:08,128 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 128 selfloop transitions, 19 changer transitions 0/163 dead transitions. [2024-06-28 03:03:08,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 163 transitions, 1786 flow [2024-06-28 03:03:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-28 03:03:08,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2024-06-28 03:03:08,145 INFO L175 Difference]: Start difference. First operand has 119 places, 146 transitions, 1418 flow. Second operand 6 states and 123 transitions. [2024-06-28 03:03:08,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 163 transitions, 1786 flow [2024-06-28 03:03:08,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 163 transitions, 1634 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:08,203 INFO L231 Difference]: Finished difference. Result has 119 places, 149 transitions, 1348 flow [2024-06-28 03:03:08,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1348, PETRI_PLACES=119, PETRI_TRANSITIONS=149} [2024-06-28 03:03:08,204 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 75 predicate places. [2024-06-28 03:03:08,204 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 149 transitions, 1348 flow [2024-06-28 03:03:08,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:08,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:08,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:08,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:03:08,204 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:08,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:08,205 INFO L85 PathProgramCache]: Analyzing trace with hash -151387523, now seen corresponding path program 3 times [2024-06-28 03:03:08,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:08,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358483545] [2024-06-28 03:03:08,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:08,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:09,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:09,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358483545] [2024-06-28 03:03:09,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358483545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:09,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:09,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:09,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847462139] [2024-06-28 03:03:09,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:09,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:09,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:09,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:09,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:09,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:03:09,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 149 transitions, 1348 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:09,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:09,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:03:09,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:09,949 INFO L124 PetriNetUnfolderBase]: 2032/3184 cut-off events. [2024-06-28 03:03:09,949 INFO L125 PetriNetUnfolderBase]: For 88218/88220 co-relation queries the response was YES. [2024-06-28 03:03:09,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19530 conditions, 3184 events. 2032/3184 cut-off events. For 88218/88220 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16537 event pairs, 612 based on Foata normal form. 6/3175 useless extension candidates. Maximal degree in co-relation 19478. Up to 2849 conditions per place. [2024-06-28 03:03:10,010 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 116 selfloop transitions, 61 changer transitions 0/187 dead transitions. [2024-06-28 03:03:10,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 187 transitions, 1960 flow [2024-06-28 03:03:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:03:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:03:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 03:03:10,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-28 03:03:10,012 INFO L175 Difference]: Start difference. First operand has 119 places, 149 transitions, 1348 flow. Second operand 8 states and 158 transitions. [2024-06-28 03:03:10,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 187 transitions, 1960 flow [2024-06-28 03:03:10,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 187 transitions, 1904 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:10,061 INFO L231 Difference]: Finished difference. Result has 124 places, 162 transitions, 1626 flow [2024-06-28 03:03:10,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1626, PETRI_PLACES=124, PETRI_TRANSITIONS=162} [2024-06-28 03:03:10,062 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 80 predicate places. [2024-06-28 03:03:10,062 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 162 transitions, 1626 flow [2024-06-28 03:03:10,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:10,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:10,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:10,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:03:10,063 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:10,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:10,063 INFO L85 PathProgramCache]: Analyzing trace with hash -269762765, now seen corresponding path program 4 times [2024-06-28 03:03:10,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:10,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535887297] [2024-06-28 03:03:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:10,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:10,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:10,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:10,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535887297] [2024-06-28 03:03:10,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535887297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:10,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:10,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:10,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051884271] [2024-06-28 03:03:10,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:10,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:10,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:10,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:10,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:10,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:03:10,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 162 transitions, 1626 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:10,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:10,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:03:10,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:11,627 INFO L124 PetriNetUnfolderBase]: 2049/3210 cut-off events. [2024-06-28 03:03:11,628 INFO L125 PetriNetUnfolderBase]: For 96870/96874 co-relation queries the response was YES. [2024-06-28 03:03:11,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20515 conditions, 3210 events. 2049/3210 cut-off events. For 96870/96874 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 16709 event pairs, 571 based on Foata normal form. 8/3210 useless extension candidates. Maximal degree in co-relation 20461. Up to 2759 conditions per place. [2024-06-28 03:03:11,650 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 112 selfloop transitions, 72 changer transitions 0/194 dead transitions. [2024-06-28 03:03:11,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 194 transitions, 2270 flow [2024-06-28 03:03:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:03:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:03:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 03:03:11,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2024-06-28 03:03:11,652 INFO L175 Difference]: Start difference. First operand has 124 places, 162 transitions, 1626 flow. Second operand 8 states and 161 transitions. [2024-06-28 03:03:11,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 194 transitions, 2270 flow [2024-06-28 03:03:11,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 194 transitions, 2163 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 03:03:11,710 INFO L231 Difference]: Finished difference. Result has 129 places, 166 transitions, 1766 flow [2024-06-28 03:03:11,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1766, PETRI_PLACES=129, PETRI_TRANSITIONS=166} [2024-06-28 03:03:11,710 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 85 predicate places. [2024-06-28 03:03:11,710 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 166 transitions, 1766 flow [2024-06-28 03:03:11,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:11,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:11,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:11,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:03:11,712 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:11,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:11,713 INFO L85 PathProgramCache]: Analyzing trace with hash -565338155, now seen corresponding path program 5 times [2024-06-28 03:03:11,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:11,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406213015] [2024-06-28 03:03:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:11,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:12,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:12,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406213015] [2024-06-28 03:03:12,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406213015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:12,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:12,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:12,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338926556] [2024-06-28 03:03:12,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:12,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:12,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:12,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:03:12,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 166 transitions, 1766 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:12,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:12,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:03:12,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:13,503 INFO L124 PetriNetUnfolderBase]: 2041/3196 cut-off events. [2024-06-28 03:03:13,503 INFO L125 PetriNetUnfolderBase]: For 101472/101476 co-relation queries the response was YES. [2024-06-28 03:03:13,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20191 conditions, 3196 events. 2041/3196 cut-off events. For 101472/101476 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 16566 event pairs, 613 based on Foata normal form. 8/3196 useless extension candidates. Maximal degree in co-relation 20136. Up to 2864 conditions per place. [2024-06-28 03:03:13,528 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 120 selfloop transitions, 60 changer transitions 0/190 dead transitions. [2024-06-28 03:03:13,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 190 transitions, 2204 flow [2024-06-28 03:03:13,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:13,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:13,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:03:13,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:03:13,530 INFO L175 Difference]: Start difference. First operand has 129 places, 166 transitions, 1766 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:03:13,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 190 transitions, 2204 flow [2024-06-28 03:03:13,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 190 transitions, 2066 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:13,598 INFO L231 Difference]: Finished difference. Result has 134 places, 166 transitions, 1756 flow [2024-06-28 03:03:13,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1756, PETRI_PLACES=134, PETRI_TRANSITIONS=166} [2024-06-28 03:03:13,599 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 90 predicate places. [2024-06-28 03:03:13,599 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 166 transitions, 1756 flow [2024-06-28 03:03:13,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:13,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:13,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:13,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:03:13,599 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 03:03:13,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash -565584419, now seen corresponding path program 5 times [2024-06-28 03:03:13,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:13,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223955272] [2024-06-28 03:03:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:13,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:14,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:14,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223955272] [2024-06-28 03:03:14,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223955272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:14,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:14,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:14,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378459368] [2024-06-28 03:03:14,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:14,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:14,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:14,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:14,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:14,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:14,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 166 transitions, 1756 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:14,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:14,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:14,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:15,533 INFO L124 PetriNetUnfolderBase]: 2151/3316 cut-off events. [2024-06-28 03:03:15,533 INFO L125 PetriNetUnfolderBase]: For 105473/105473 co-relation queries the response was YES. [2024-06-28 03:03:15,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20780 conditions, 3316 events. 2151/3316 cut-off events. For 105473/105473 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16770 event pairs, 590 based on Foata normal form. 4/3318 useless extension candidates. Maximal degree in co-relation 20723. Up to 2708 conditions per place. [2024-06-28 03:03:15,555 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 112 selfloop transitions, 81 changer transitions 0/198 dead transitions. [2024-06-28 03:03:15,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 198 transitions, 2248 flow [2024-06-28 03:03:15,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:03:15,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599483204134367 [2024-06-28 03:03:15,556 INFO L175 Difference]: Start difference. First operand has 134 places, 166 transitions, 1756 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:03:15,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 198 transitions, 2248 flow [2024-06-28 03:03:15,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 198 transitions, 2056 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 03:03:15,625 INFO L231 Difference]: Finished difference. Result has 135 places, 166 transitions, 1734 flow [2024-06-28 03:03:15,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1734, PETRI_PLACES=135, PETRI_TRANSITIONS=166} [2024-06-28 03:03:15,627 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 91 predicate places. [2024-06-28 03:03:15,627 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 166 transitions, 1734 flow [2024-06-28 03:03:15,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:15,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:15,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:15,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:03:15,628 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:15,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:15,628 INFO L85 PathProgramCache]: Analyzing trace with hash -27150797, now seen corresponding path program 2 times [2024-06-28 03:03:15,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:15,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824559182] [2024-06-28 03:03:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:15,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:16,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:16,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824559182] [2024-06-28 03:03:16,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824559182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:16,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:16,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:03:16,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83703301] [2024-06-28 03:03:16,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:16,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:03:16,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:16,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:03:16,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:03:16,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:03:16,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 166 transitions, 1734 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:16,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:16,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:03:16,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:16,780 INFO L124 PetriNetUnfolderBase]: 1882/2990 cut-off events. [2024-06-28 03:03:16,781 INFO L125 PetriNetUnfolderBase]: For 110611/110630 co-relation queries the response was YES. [2024-06-28 03:03:16,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19766 conditions, 2990 events. 1882/2990 cut-off events. For 110611/110630 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 15729 event pairs, 601 based on Foata normal form. 5/2962 useless extension candidates. Maximal degree in co-relation 19709. Up to 2750 conditions per place. [2024-06-28 03:03:16,804 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 139 selfloop transitions, 23 changer transitions 0/178 dead transitions. [2024-06-28 03:03:16,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 178 transitions, 2126 flow [2024-06-28 03:03:16,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:16,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-28 03:03:16,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-06-28 03:03:16,806 INFO L175 Difference]: Start difference. First operand has 135 places, 166 transitions, 1734 flow. Second operand 6 states and 119 transitions. [2024-06-28 03:03:16,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 178 transitions, 2126 flow [2024-06-28 03:03:16,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 178 transitions, 1863 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:03:16,857 INFO L231 Difference]: Finished difference. Result has 131 places, 169 transitions, 1569 flow [2024-06-28 03:03:16,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1569, PETRI_PLACES=131, PETRI_TRANSITIONS=169} [2024-06-28 03:03:16,858 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 87 predicate places. [2024-06-28 03:03:16,858 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 169 transitions, 1569 flow [2024-06-28 03:03:16,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:16,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:16,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:16,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:03:16,859 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 03:03:16,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:16,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1996682947, now seen corresponding path program 1 times [2024-06-28 03:03:16,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:16,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645418767] [2024-06-28 03:03:16,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:16,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:17,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:17,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645418767] [2024-06-28 03:03:17,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645418767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:17,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:17,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:17,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916566451] [2024-06-28 03:03:17,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:17,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:17,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:17,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:17,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:17,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:03:17,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 169 transitions, 1569 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:17,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:17,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:03:17,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:18,056 INFO L124 PetriNetUnfolderBase]: 1812/2941 cut-off events. [2024-06-28 03:03:18,057 INFO L125 PetriNetUnfolderBase]: For 98647/98649 co-relation queries the response was YES. [2024-06-28 03:03:18,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18427 conditions, 2941 events. 1812/2941 cut-off events. For 98647/98649 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 15786 event pairs, 540 based on Foata normal form. 4/2937 useless extension candidates. Maximal degree in co-relation 18369. Up to 2665 conditions per place. [2024-06-28 03:03:18,075 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 161 selfloop transitions, 12 changer transitions 0/184 dead transitions. [2024-06-28 03:03:18,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 184 transitions, 1985 flow [2024-06-28 03:03:18,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:18,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 03:03:18,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689922480620155 [2024-06-28 03:03:18,076 INFO L175 Difference]: Start difference. First operand has 131 places, 169 transitions, 1569 flow. Second operand 6 states and 121 transitions. [2024-06-28 03:03:18,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 184 transitions, 1985 flow [2024-06-28 03:03:18,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 184 transitions, 1909 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:18,141 INFO L231 Difference]: Finished difference. Result has 133 places, 172 transitions, 1563 flow [2024-06-28 03:03:18,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1563, PETRI_PLACES=133, PETRI_TRANSITIONS=172} [2024-06-28 03:03:18,141 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 89 predicate places. [2024-06-28 03:03:18,141 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 172 transitions, 1563 flow [2024-06-28 03:03:18,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:18,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:18,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:18,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:03:18,142 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 03:03:18,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:18,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1384718731, now seen corresponding path program 2 times [2024-06-28 03:03:18,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:18,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744159455] [2024-06-28 03:03:18,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:18,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:18,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:18,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744159455] [2024-06-28 03:03:18,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744159455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:18,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:18,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:18,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835578345] [2024-06-28 03:03:18,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:18,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:18,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:18,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:18,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:19,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:03:19,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 172 transitions, 1563 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:19,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:19,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:03:19,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:19,405 INFO L124 PetriNetUnfolderBase]: 1817/2950 cut-off events. [2024-06-28 03:03:19,406 INFO L125 PetriNetUnfolderBase]: For 103048/103052 co-relation queries the response was YES. [2024-06-28 03:03:19,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18865 conditions, 2950 events. 1817/2950 cut-off events. For 103048/103052 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 15928 event pairs, 544 based on Foata normal form. 6/2948 useless extension candidates. Maximal degree in co-relation 18806. Up to 2659 conditions per place. [2024-06-28 03:03:19,425 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 157 selfloop transitions, 17 changer transitions 0/185 dead transitions. [2024-06-28 03:03:19,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 185 transitions, 1981 flow [2024-06-28 03:03:19,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:03:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:03:19,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 03:03:19,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4689922480620155 [2024-06-28 03:03:19,426 INFO L175 Difference]: Start difference. First operand has 133 places, 172 transitions, 1563 flow. Second operand 6 states and 121 transitions. [2024-06-28 03:03:19,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 185 transitions, 1981 flow [2024-06-28 03:03:19,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 185 transitions, 1933 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:19,493 INFO L231 Difference]: Finished difference. Result has 135 places, 175 transitions, 1601 flow [2024-06-28 03:03:19,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1601, PETRI_PLACES=135, PETRI_TRANSITIONS=175} [2024-06-28 03:03:19,494 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 91 predicate places. [2024-06-28 03:03:19,494 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 175 transitions, 1601 flow [2024-06-28 03:03:19,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:19,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:19,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:19,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:03:19,495 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 03:03:19,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:19,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1624242289, now seen corresponding path program 1 times [2024-06-28 03:03:19,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:19,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709433913] [2024-06-28 03:03:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:19,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:20,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709433913] [2024-06-28 03:03:20,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709433913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:20,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:20,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:20,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24218869] [2024-06-28 03:03:20,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:20,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:20,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:20,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:20,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:20,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:20,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 175 transitions, 1601 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:20,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:20,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:20,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:21,128 INFO L124 PetriNetUnfolderBase]: 2177/3360 cut-off events. [2024-06-28 03:03:21,129 INFO L125 PetriNetUnfolderBase]: For 131111/131111 co-relation queries the response was YES. [2024-06-28 03:03:21,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22274 conditions, 3360 events. 2177/3360 cut-off events. For 131111/131111 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17141 event pairs, 603 based on Foata normal form. 4/3362 useless extension candidates. Maximal degree in co-relation 22214. Up to 2957 conditions per place. [2024-06-28 03:03:21,151 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 138 selfloop transitions, 70 changer transitions 0/213 dead transitions. [2024-06-28 03:03:21,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 213 transitions, 2175 flow [2024-06-28 03:03:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 03:03:21,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2024-06-28 03:03:21,153 INFO L175 Difference]: Start difference. First operand has 135 places, 175 transitions, 1601 flow. Second operand 9 states and 177 transitions. [2024-06-28 03:03:21,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 213 transitions, 2175 flow [2024-06-28 03:03:21,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 213 transitions, 2111 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:21,238 INFO L231 Difference]: Finished difference. Result has 141 places, 180 transitions, 1752 flow [2024-06-28 03:03:21,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1752, PETRI_PLACES=141, PETRI_TRANSITIONS=180} [2024-06-28 03:03:21,238 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 97 predicate places. [2024-06-28 03:03:21,238 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 180 transitions, 1752 flow [2024-06-28 03:03:21,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:21,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:21,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:21,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:03:21,239 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:21,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:21,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2036885019, now seen corresponding path program 2 times [2024-06-28 03:03:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:21,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457418394] [2024-06-28 03:03:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:21,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:22,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:22,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457418394] [2024-06-28 03:03:22,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457418394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:22,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:22,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:22,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933938489] [2024-06-28 03:03:22,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:22,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:22,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:22,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:22,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:22,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 180 transitions, 1752 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:22,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:22,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:22,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:22,945 INFO L124 PetriNetUnfolderBase]: 2205/3402 cut-off events. [2024-06-28 03:03:22,945 INFO L125 PetriNetUnfolderBase]: For 139739/139739 co-relation queries the response was YES. [2024-06-28 03:03:22,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23283 conditions, 3402 events. 2205/3402 cut-off events. For 139739/139739 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 17367 event pairs, 593 based on Foata normal form. 4/3404 useless extension candidates. Maximal degree in co-relation 23221. Up to 2996 conditions per place. [2024-06-28 03:03:22,968 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 147 selfloop transitions, 66 changer transitions 0/218 dead transitions. [2024-06-28 03:03:22,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 218 transitions, 2357 flow [2024-06-28 03:03:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 03:03:22,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-28 03:03:22,970 INFO L175 Difference]: Start difference. First operand has 141 places, 180 transitions, 1752 flow. Second operand 9 states and 176 transitions. [2024-06-28 03:03:22,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 218 transitions, 2357 flow [2024-06-28 03:03:23,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 218 transitions, 2178 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:23,052 INFO L231 Difference]: Finished difference. Result has 145 places, 186 transitions, 1807 flow [2024-06-28 03:03:23,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1807, PETRI_PLACES=145, PETRI_TRANSITIONS=186} [2024-06-28 03:03:23,053 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 101 predicate places. [2024-06-28 03:03:23,053 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 186 transitions, 1807 flow [2024-06-28 03:03:23,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:23,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:23,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:23,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:03:23,054 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:23,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1889873809, now seen corresponding path program 3 times [2024-06-28 03:03:23,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:23,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844266301] [2024-06-28 03:03:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:23,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:23,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:23,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844266301] [2024-06-28 03:03:23,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844266301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:23,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:23,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:23,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645660744] [2024-06-28 03:03:23,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:23,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:23,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:23,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:24,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:24,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 186 transitions, 1807 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:24,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:24,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:24,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:24,810 INFO L124 PetriNetUnfolderBase]: 2222/3436 cut-off events. [2024-06-28 03:03:24,811 INFO L125 PetriNetUnfolderBase]: For 148996/148996 co-relation queries the response was YES. [2024-06-28 03:03:24,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23965 conditions, 3436 events. 2222/3436 cut-off events. For 148996/148996 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 17639 event pairs, 600 based on Foata normal form. 4/3438 useless extension candidates. Maximal degree in co-relation 23901. Up to 3023 conditions per place. [2024-06-28 03:03:24,831 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 150 selfloop transitions, 68 changer transitions 0/223 dead transitions. [2024-06-28 03:03:24,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 223 transitions, 2421 flow [2024-06-28 03:03:24,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:03:24,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-28 03:03:24,833 INFO L175 Difference]: Start difference. First operand has 145 places, 186 transitions, 1807 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:03:24,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 223 transitions, 2421 flow [2024-06-28 03:03:24,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 223 transitions, 2246 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:24,928 INFO L231 Difference]: Finished difference. Result has 148 places, 190 transitions, 1847 flow [2024-06-28 03:03:24,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1847, PETRI_PLACES=148, PETRI_TRANSITIONS=190} [2024-06-28 03:03:24,928 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 104 predicate places. [2024-06-28 03:03:24,929 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 190 transitions, 1847 flow [2024-06-28 03:03:24,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:24,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:24,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:24,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:03:24,929 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:24,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1890142579, now seen corresponding path program 4 times [2024-06-28 03:03:24,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:24,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899946983] [2024-06-28 03:03:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:24,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:25,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:25,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899946983] [2024-06-28 03:03:25,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899946983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:25,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:25,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:25,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962575790] [2024-06-28 03:03:25,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:25,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:25,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:25,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:25,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:25,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:25,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 190 transitions, 1847 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:25,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:25,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:25,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:26,511 INFO L124 PetriNetUnfolderBase]: 2239/3458 cut-off events. [2024-06-28 03:03:26,511 INFO L125 PetriNetUnfolderBase]: For 157775/157775 co-relation queries the response was YES. [2024-06-28 03:03:26,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24447 conditions, 3458 events. 2239/3458 cut-off events. For 157775/157775 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17705 event pairs, 586 based on Foata normal form. 4/3460 useless extension candidates. Maximal degree in co-relation 24382. Up to 2926 conditions per place. [2024-06-28 03:03:26,535 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 145 selfloop transitions, 76 changer transitions 0/226 dead transitions. [2024-06-28 03:03:26,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 226 transitions, 2453 flow [2024-06-28 03:03:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:26,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:26,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 03:03:26,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-28 03:03:26,537 INFO L175 Difference]: Start difference. First operand has 148 places, 190 transitions, 1847 flow. Second operand 9 states and 176 transitions. [2024-06-28 03:03:26,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 226 transitions, 2453 flow [2024-06-28 03:03:26,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 226 transitions, 2300 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:26,654 INFO L231 Difference]: Finished difference. Result has 152 places, 192 transitions, 1911 flow [2024-06-28 03:03:26,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1911, PETRI_PLACES=152, PETRI_TRANSITIONS=192} [2024-06-28 03:03:26,655 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 108 predicate places. [2024-06-28 03:03:26,655 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 192 transitions, 1911 flow [2024-06-28 03:03:26,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:26,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:26,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:26,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:03:26,656 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 03:03:26,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:26,656 INFO L85 PathProgramCache]: Analyzing trace with hash -390517497, now seen corresponding path program 1 times [2024-06-28 03:03:26,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:26,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174112575] [2024-06-28 03:03:26,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:27,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:27,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174112575] [2024-06-28 03:03:27,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174112575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:27,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:27,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:27,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960352848] [2024-06-28 03:03:27,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:27,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:27,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:27,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:27,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:27,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:03:27,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 192 transitions, 1911 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:27,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:27,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:03:27,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:27,895 INFO L124 PetriNetUnfolderBase]: 2098/3296 cut-off events. [2024-06-28 03:03:27,895 INFO L125 PetriNetUnfolderBase]: For 164315/164315 co-relation queries the response was YES. [2024-06-28 03:03:27,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24299 conditions, 3296 events. 2098/3296 cut-off events. For 164315/164315 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17292 event pairs, 584 based on Foata normal form. 1/3282 useless extension candidates. Maximal degree in co-relation 24233. Up to 3072 conditions per place. [2024-06-28 03:03:27,922 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 183 selfloop transitions, 22 changer transitions 0/216 dead transitions. [2024-06-28 03:03:27,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 216 transitions, 2433 flow [2024-06-28 03:03:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:27,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 03:03:27,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-28 03:03:27,923 INFO L175 Difference]: Start difference. First operand has 152 places, 192 transitions, 1911 flow. Second operand 7 states and 139 transitions. [2024-06-28 03:03:27,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 216 transitions, 2433 flow [2024-06-28 03:03:28,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 216 transitions, 2238 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:28,025 INFO L231 Difference]: Finished difference. Result has 152 places, 195 transitions, 1818 flow [2024-06-28 03:03:28,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1818, PETRI_PLACES=152, PETRI_TRANSITIONS=195} [2024-06-28 03:03:28,026 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 108 predicate places. [2024-06-28 03:03:28,026 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 195 transitions, 1818 flow [2024-06-28 03:03:28,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:28,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:28,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:28,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:03:28,026 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 03:03:28,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:28,027 INFO L85 PathProgramCache]: Analyzing trace with hash -390159447, now seen corresponding path program 2 times [2024-06-28 03:03:28,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:28,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584287540] [2024-06-28 03:03:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:28,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:28,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:28,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:28,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584287540] [2024-06-28 03:03:28,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584287540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:28,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:28,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:28,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237166204] [2024-06-28 03:03:28,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:28,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:28,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:28,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:28,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:28,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:03:28,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 195 transitions, 1818 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:28,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:28,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:03:28,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:29,381 INFO L124 PetriNetUnfolderBase]: 2103/3303 cut-off events. [2024-06-28 03:03:29,382 INFO L125 PetriNetUnfolderBase]: For 172051/172051 co-relation queries the response was YES. [2024-06-28 03:03:29,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24559 conditions, 3303 events. 2103/3303 cut-off events. For 172051/172051 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17280 event pairs, 579 based on Foata normal form. 1/3289 useless extension candidates. Maximal degree in co-relation 24492. Up to 3069 conditions per place. [2024-06-28 03:03:29,408 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 179 selfloop transitions, 24 changer transitions 0/214 dead transitions. [2024-06-28 03:03:29,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 214 transitions, 2326 flow [2024-06-28 03:03:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:29,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:03:29,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485049833887043 [2024-06-28 03:03:29,410 INFO L175 Difference]: Start difference. First operand has 152 places, 195 transitions, 1818 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:03:29,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 214 transitions, 2326 flow [2024-06-28 03:03:29,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 214 transitions, 2246 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:29,492 INFO L231 Difference]: Finished difference. Result has 154 places, 198 transitions, 1850 flow [2024-06-28 03:03:29,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1850, PETRI_PLACES=154, PETRI_TRANSITIONS=198} [2024-06-28 03:03:29,493 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 110 predicate places. [2024-06-28 03:03:29,493 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 198 transitions, 1850 flow [2024-06-28 03:03:29,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:29,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:29,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:29,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:03:29,493 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 03:03:29,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:29,494 INFO L85 PathProgramCache]: Analyzing trace with hash -855482693, now seen corresponding path program 1 times [2024-06-28 03:03:29,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:29,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157992738] [2024-06-28 03:03:29,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:29,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:30,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:30,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157992738] [2024-06-28 03:03:30,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157992738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:30,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:30,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:30,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625237383] [2024-06-28 03:03:30,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:30,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:30,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:30,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:30,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:30,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:03:30,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 198 transitions, 1850 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:30,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:30,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:03:30,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:31,189 INFO L124 PetriNetUnfolderBase]: 2011/3213 cut-off events. [2024-06-28 03:03:31,189 INFO L125 PetriNetUnfolderBase]: For 177594/177594 co-relation queries the response was YES. [2024-06-28 03:03:31,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24337 conditions, 3213 events. 2011/3213 cut-off events. For 177594/177594 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17186 event pairs, 578 based on Foata normal form. 1/3199 useless extension candidates. Maximal degree in co-relation 24269. Up to 2880 conditions per place. [2024-06-28 03:03:31,217 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 169 selfloop transitions, 22 changer transitions 0/216 dead transitions. [2024-06-28 03:03:31,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 216 transitions, 2322 flow [2024-06-28 03:03:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:31,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 03:03:31,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-28 03:03:31,218 INFO L175 Difference]: Start difference. First operand has 154 places, 198 transitions, 1850 flow. Second operand 7 states and 139 transitions. [2024-06-28 03:03:31,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 216 transitions, 2322 flow [2024-06-28 03:03:31,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 216 transitions, 2232 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:31,290 INFO L231 Difference]: Finished difference. Result has 156 places, 201 transitions, 1860 flow [2024-06-28 03:03:31,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1860, PETRI_PLACES=156, PETRI_TRANSITIONS=201} [2024-06-28 03:03:31,293 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 112 predicate places. [2024-06-28 03:03:31,293 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 201 transitions, 1860 flow [2024-06-28 03:03:31,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:31,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:31,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:31,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:03:31,293 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:31,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:31,295 INFO L85 PathProgramCache]: Analyzing trace with hash 740965835, now seen corresponding path program 5 times [2024-06-28 03:03:31,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:31,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279635067] [2024-06-28 03:03:31,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:31,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:32,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:32,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279635067] [2024-06-28 03:03:32,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279635067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:32,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:32,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:32,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776598137] [2024-06-28 03:03:32,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:32,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:32,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:32,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:32,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:32,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:32,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 201 transitions, 1860 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:32,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:32,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:32,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:33,434 INFO L124 PetriNetUnfolderBase]: 2282/3526 cut-off events. [2024-06-28 03:03:33,435 INFO L125 PetriNetUnfolderBase]: For 190369/190371 co-relation queries the response was YES. [2024-06-28 03:03:33,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26480 conditions, 3526 events. 2282/3526 cut-off events. For 190369/190371 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 18087 event pairs, 598 based on Foata normal form. 6/3531 useless extension candidates. Maximal degree in co-relation 26411. Up to 3110 conditions per place. [2024-06-28 03:03:33,457 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 162 selfloop transitions, 72 changer transitions 0/239 dead transitions. [2024-06-28 03:03:33,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 239 transitions, 2529 flow [2024-06-28 03:03:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:03:33,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 03:03:33,458 INFO L175 Difference]: Start difference. First operand has 156 places, 201 transitions, 1860 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:03:33,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 239 transitions, 2529 flow [2024-06-28 03:03:33,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 239 transitions, 2451 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:33,549 INFO L231 Difference]: Finished difference. Result has 161 places, 209 transitions, 2068 flow [2024-06-28 03:03:33,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2068, PETRI_PLACES=161, PETRI_TRANSITIONS=209} [2024-06-28 03:03:33,550 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 117 predicate places. [2024-06-28 03:03:33,550 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 209 transitions, 2068 flow [2024-06-28 03:03:33,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:33,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:33,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:33,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:03:33,551 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:33,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:33,551 INFO L85 PathProgramCache]: Analyzing trace with hash -96261501, now seen corresponding path program 6 times [2024-06-28 03:03:33,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:33,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396485905] [2024-06-28 03:03:33,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:33,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:34,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:34,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396485905] [2024-06-28 03:03:34,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396485905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:34,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:34,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:34,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382027381] [2024-06-28 03:03:34,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:34,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:34,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:34,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:34,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 209 transitions, 2068 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:34,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:34,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:34,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:35,271 INFO L124 PetriNetUnfolderBase]: 2299/3553 cut-off events. [2024-06-28 03:03:35,271 INFO L125 PetriNetUnfolderBase]: For 202274/202276 co-relation queries the response was YES. [2024-06-28 03:03:35,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27537 conditions, 3553 events. 2299/3553 cut-off events. For 202274/202276 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18272 event pairs, 598 based on Foata normal form. 6/3558 useless extension candidates. Maximal degree in co-relation 27466. Up to 3093 conditions per place. [2024-06-28 03:03:35,298 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 164 selfloop transitions, 74 changer transitions 0/243 dead transitions. [2024-06-28 03:03:35,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 243 transitions, 2712 flow [2024-06-28 03:03:35,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:35,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:03:35,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2024-06-28 03:03:35,299 INFO L175 Difference]: Start difference. First operand has 161 places, 209 transitions, 2068 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:03:35,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 243 transitions, 2712 flow [2024-06-28 03:03:35,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 243 transitions, 2577 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 03:03:35,427 INFO L231 Difference]: Finished difference. Result has 166 places, 211 transitions, 2156 flow [2024-06-28 03:03:35,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2156, PETRI_PLACES=166, PETRI_TRANSITIONS=211} [2024-06-28 03:03:35,427 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 122 predicate places. [2024-06-28 03:03:35,427 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 211 transitions, 2156 flow [2024-06-28 03:03:35,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:35,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:35,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:35,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:03:35,428 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:35,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:35,428 INFO L85 PathProgramCache]: Analyzing trace with hash 227290327, now seen corresponding path program 7 times [2024-06-28 03:03:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:35,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085433382] [2024-06-28 03:03:35,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:35,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:36,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:36,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085433382] [2024-06-28 03:03:36,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085433382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:36,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:36,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:36,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386806336] [2024-06-28 03:03:36,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:36,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:36,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:36,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:36,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 211 transitions, 2156 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:36,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:36,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:36,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:37,201 INFO L124 PetriNetUnfolderBase]: 2316/3580 cut-off events. [2024-06-28 03:03:37,201 INFO L125 PetriNetUnfolderBase]: For 211987/211989 co-relation queries the response was YES. [2024-06-28 03:03:37,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27747 conditions, 3580 events. 2316/3580 cut-off events. For 211987/211989 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18518 event pairs, 539 based on Foata normal form. 6/3585 useless extension candidates. Maximal degree in co-relation 27675. Up to 2859 conditions per place. [2024-06-28 03:03:37,244 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 152 selfloop transitions, 92 changer transitions 0/249 dead transitions. [2024-06-28 03:03:37,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 249 transitions, 3030 flow [2024-06-28 03:03:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:03:37,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-28 03:03:37,246 INFO L175 Difference]: Start difference. First operand has 166 places, 211 transitions, 2156 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:03:37,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 249 transitions, 3030 flow [2024-06-28 03:03:37,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 249 transitions, 2825 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:37,440 INFO L231 Difference]: Finished difference. Result has 168 places, 215 transitions, 2282 flow [2024-06-28 03:03:37,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2282, PETRI_PLACES=168, PETRI_TRANSITIONS=215} [2024-06-28 03:03:37,441 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 124 predicate places. [2024-06-28 03:03:37,441 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 215 transitions, 2282 flow [2024-06-28 03:03:37,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:37,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:37,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:37,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:03:37,442 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:37,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:37,442 INFO L85 PathProgramCache]: Analyzing trace with hash -345880941, now seen corresponding path program 8 times [2024-06-28 03:03:37,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:37,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373173811] [2024-06-28 03:03:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:37,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:38,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:38,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373173811] [2024-06-28 03:03:38,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373173811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:38,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:38,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:38,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311471824] [2024-06-28 03:03:38,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:38,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:38,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:38,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:38,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:38,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:38,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 215 transitions, 2282 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:38,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:38,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:38,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:39,396 INFO L124 PetriNetUnfolderBase]: 2344/3626 cut-off events. [2024-06-28 03:03:39,397 INFO L125 PetriNetUnfolderBase]: For 223301/223303 co-relation queries the response was YES. [2024-06-28 03:03:39,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28431 conditions, 3626 events. 2344/3626 cut-off events. For 223301/223303 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 18746 event pairs, 611 based on Foata normal form. 6/3631 useless extension candidates. Maximal degree in co-relation 28358. Up to 3203 conditions per place. [2024-06-28 03:03:39,420 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 176 selfloop transitions, 70 changer transitions 0/251 dead transitions. [2024-06-28 03:03:39,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 251 transitions, 2978 flow [2024-06-28 03:03:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:03:39,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2024-06-28 03:03:39,422 INFO L175 Difference]: Start difference. First operand has 168 places, 215 transitions, 2282 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:03:39,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 251 transitions, 2978 flow [2024-06-28 03:03:39,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 251 transitions, 2807 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:39,572 INFO L231 Difference]: Finished difference. Result has 172 places, 220 transitions, 2364 flow [2024-06-28 03:03:39,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2364, PETRI_PLACES=172, PETRI_TRANSITIONS=220} [2024-06-28 03:03:39,574 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 128 predicate places. [2024-06-28 03:03:39,574 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 220 transitions, 2364 flow [2024-06-28 03:03:39,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:39,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:39,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:39,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:03:39,576 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:39,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash -345612171, now seen corresponding path program 9 times [2024-06-28 03:03:39,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:39,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431591132] [2024-06-28 03:03:39,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:39,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:40,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:40,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431591132] [2024-06-28 03:03:40,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431591132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:40,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:40,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:40,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207735507] [2024-06-28 03:03:40,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:40,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:40,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:40,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:40,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:40,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:40,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 220 transitions, 2364 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:40,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:40,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:40,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:41,536 INFO L124 PetriNetUnfolderBase]: 2361/3653 cut-off events. [2024-06-28 03:03:41,536 INFO L125 PetriNetUnfolderBase]: For 232372/232374 co-relation queries the response was YES. [2024-06-28 03:03:41,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28869 conditions, 3653 events. 2361/3653 cut-off events. For 232372/232374 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 18915 event pairs, 606 based on Foata normal form. 6/3658 useless extension candidates. Maximal degree in co-relation 28794. Up to 3162 conditions per place. [2024-06-28 03:03:41,564 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 177 selfloop transitions, 74 changer transitions 0/256 dead transitions. [2024-06-28 03:03:41,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 256 transitions, 3194 flow [2024-06-28 03:03:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 03:03:41,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-28 03:03:41,566 INFO L175 Difference]: Start difference. First operand has 172 places, 220 transitions, 2364 flow. Second operand 9 states and 176 transitions. [2024-06-28 03:03:41,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 256 transitions, 3194 flow [2024-06-28 03:03:41,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 256 transitions, 2988 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:03:41,706 INFO L231 Difference]: Finished difference. Result has 175 places, 222 transitions, 2379 flow [2024-06-28 03:03:41,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2379, PETRI_PLACES=175, PETRI_TRANSITIONS=222} [2024-06-28 03:03:41,706 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 131 predicate places. [2024-06-28 03:03:41,707 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 222 transitions, 2379 flow [2024-06-28 03:03:41,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:41,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:41,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:41,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:03:41,707 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:41,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:41,708 INFO L85 PathProgramCache]: Analyzing trace with hash 171695917, now seen corresponding path program 10 times [2024-06-28 03:03:41,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:41,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999038020] [2024-06-28 03:03:41,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:41,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:42,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:42,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999038020] [2024-06-28 03:03:42,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999038020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:42,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:42,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:03:42,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523485057] [2024-06-28 03:03:42,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:42,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:03:42,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:42,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:03:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:03:42,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:03:42,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 222 transitions, 2379 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:42,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:42,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:03:42,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:43,441 INFO L124 PetriNetUnfolderBase]: 2353/3634 cut-off events. [2024-06-28 03:03:43,441 INFO L125 PetriNetUnfolderBase]: For 237816/237818 co-relation queries the response was YES. [2024-06-28 03:03:43,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28685 conditions, 3634 events. 2353/3634 cut-off events. For 237816/237818 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 18731 event pairs, 607 based on Foata normal form. 6/3639 useless extension candidates. Maximal degree in co-relation 28610. Up to 3218 conditions per place. [2024-06-28 03:03:43,470 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 173 selfloop transitions, 73 changer transitions 0/251 dead transitions. [2024-06-28 03:03:43,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 251 transitions, 2963 flow [2024-06-28 03:03:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:03:43,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:03:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:03:43,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:03:43,476 INFO L175 Difference]: Start difference. First operand has 175 places, 222 transitions, 2379 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:03:43,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 251 transitions, 2963 flow [2024-06-28 03:03:43,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 251 transitions, 2678 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-28 03:03:43,675 INFO L231 Difference]: Finished difference. Result has 177 places, 222 transitions, 2247 flow [2024-06-28 03:03:43,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2247, PETRI_PLACES=177, PETRI_TRANSITIONS=222} [2024-06-28 03:03:43,678 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 133 predicate places. [2024-06-28 03:03:43,678 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 222 transitions, 2247 flow [2024-06-28 03:03:43,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:43,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:43,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:43,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:03:43,678 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 03:03:43,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash 23147433, now seen corresponding path program 3 times [2024-06-28 03:03:43,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:43,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725000682] [2024-06-28 03:03:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:43,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:44,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:44,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725000682] [2024-06-28 03:03:44,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725000682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:44,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:44,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:44,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241907328] [2024-06-28 03:03:44,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:44,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:44,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:44,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:44,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:44,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:03:44,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 222 transitions, 2247 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:44,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:44,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:03:44,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:45,051 INFO L124 PetriNetUnfolderBase]: 2204/3474 cut-off events. [2024-06-28 03:03:45,051 INFO L125 PetriNetUnfolderBase]: For 242140/242144 co-relation queries the response was YES. [2024-06-28 03:03:45,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27908 conditions, 3474 events. 2204/3474 cut-off events. For 242140/242144 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 18410 event pairs, 602 based on Foata normal form. 5/3473 useless extension candidates. Maximal degree in co-relation 27832. Up to 3218 conditions per place. [2024-06-28 03:03:45,082 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 195 selfloop transitions, 30 changer transitions 0/236 dead transitions. [2024-06-28 03:03:45,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 236 transitions, 2797 flow [2024-06-28 03:03:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:45,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 03:03:45,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43521594684385384 [2024-06-28 03:03:45,083 INFO L175 Difference]: Start difference. First operand has 177 places, 222 transitions, 2247 flow. Second operand 7 states and 131 transitions. [2024-06-28 03:03:45,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 236 transitions, 2797 flow [2024-06-28 03:03:45,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 236 transitions, 2605 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:03:45,280 INFO L231 Difference]: Finished difference. Result has 175 places, 225 transitions, 2193 flow [2024-06-28 03:03:45,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2193, PETRI_PLACES=175, PETRI_TRANSITIONS=225} [2024-06-28 03:03:45,280 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 131 predicate places. [2024-06-28 03:03:45,281 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 225 transitions, 2193 flow [2024-06-28 03:03:45,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:45,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:45,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:45,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:03:45,281 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 03:03:45,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:45,282 INFO L85 PathProgramCache]: Analyzing trace with hash 23147867, now seen corresponding path program 2 times [2024-06-28 03:03:45,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:45,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906026955] [2024-06-28 03:03:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:46,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:46,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906026955] [2024-06-28 03:03:46,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906026955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:46,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:46,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:46,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053929660] [2024-06-28 03:03:46,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:46,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:46,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:46,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:46,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:46,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:03:46,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 225 transitions, 2193 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:46,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:46,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:03:46,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:47,014 INFO L124 PetriNetUnfolderBase]: 2103/3374 cut-off events. [2024-06-28 03:03:47,014 INFO L125 PetriNetUnfolderBase]: For 248553/248557 co-relation queries the response was YES. [2024-06-28 03:03:47,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27181 conditions, 3374 events. 2103/3374 cut-off events. For 248553/248557 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 18340 event pairs, 596 based on Foata normal form. 5/3373 useless extension candidates. Maximal degree in co-relation 27105. Up to 2978 conditions per place. [2024-06-28 03:03:47,045 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 177 selfloop transitions, 26 changer transitions 0/238 dead transitions. [2024-06-28 03:03:47,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 238 transitions, 2681 flow [2024-06-28 03:03:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:47,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:03:47,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485049833887043 [2024-06-28 03:03:47,046 INFO L175 Difference]: Start difference. First operand has 175 places, 225 transitions, 2193 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:03:47,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 238 transitions, 2681 flow [2024-06-28 03:03:47,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 238 transitions, 2565 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:47,228 INFO L231 Difference]: Finished difference. Result has 177 places, 228 transitions, 2193 flow [2024-06-28 03:03:47,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2193, PETRI_PLACES=177, PETRI_TRANSITIONS=228} [2024-06-28 03:03:47,229 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 133 predicate places. [2024-06-28 03:03:47,229 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 228 transitions, 2193 flow [2024-06-28 03:03:47,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:47,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:47,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:47,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:03:47,229 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 03:03:47,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:47,230 INFO L85 PathProgramCache]: Analyzing trace with hash 23623097, now seen corresponding path program 3 times [2024-06-28 03:03:47,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:47,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812543541] [2024-06-28 03:03:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:47,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:48,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:48,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812543541] [2024-06-28 03:03:48,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812543541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:48,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:48,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:48,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790829762] [2024-06-28 03:03:48,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:48,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:48,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:48,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:48,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:03:48,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 228 transitions, 2193 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:48,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:48,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:03:48,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:48,856 INFO L124 PetriNetUnfolderBase]: 2100/3370 cut-off events. [2024-06-28 03:03:48,856 INFO L125 PetriNetUnfolderBase]: For 257043/257047 co-relation queries the response was YES. [2024-06-28 03:03:48,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27559 conditions, 3370 events. 2100/3370 cut-off events. For 257043/257047 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 18341 event pairs, 596 based on Foata normal form. 5/3369 useless extension candidates. Maximal degree in co-relation 27482. Up to 2965 conditions per place. [2024-06-28 03:03:48,885 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 175 selfloop transitions, 34 changer transitions 0/244 dead transitions. [2024-06-28 03:03:48,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 244 transitions, 2713 flow [2024-06-28 03:03:48,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:03:48,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-28 03:03:48,896 INFO L175 Difference]: Start difference. First operand has 177 places, 228 transitions, 2193 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:03:48,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 244 transitions, 2713 flow [2024-06-28 03:03:49,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 244 transitions, 2619 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:49,043 INFO L231 Difference]: Finished difference. Result has 180 places, 234 transitions, 2267 flow [2024-06-28 03:03:49,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2099, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2267, PETRI_PLACES=180, PETRI_TRANSITIONS=234} [2024-06-28 03:03:49,043 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 136 predicate places. [2024-06-28 03:03:49,043 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 234 transitions, 2267 flow [2024-06-28 03:03:49,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:49,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:49,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:49,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:03:49,044 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 03:03:49,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash -153857793, now seen corresponding path program 1 times [2024-06-28 03:03:49,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:49,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985355158] [2024-06-28 03:03:49,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:49,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:49,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:49,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985355158] [2024-06-28 03:03:49,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985355158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:49,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:49,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:49,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462128832] [2024-06-28 03:03:49,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:49,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:49,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:49,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:49,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:50,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:03:50,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 234 transitions, 2267 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:50,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:50,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:03:50,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:50,706 INFO L124 PetriNetUnfolderBase]: 2112/3391 cut-off events. [2024-06-28 03:03:50,707 INFO L125 PetriNetUnfolderBase]: For 266100/266100 co-relation queries the response was YES. [2024-06-28 03:03:50,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27894 conditions, 3391 events. 2112/3391 cut-off events. For 266100/266100 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 18372 event pairs, 559 based on Foata normal form. 1/3391 useless extension candidates. Maximal degree in co-relation 27815. Up to 2960 conditions per place. [2024-06-28 03:03:50,731 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 203 selfloop transitions, 15 changer transitions 0/252 dead transitions. [2024-06-28 03:03:50,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 252 transitions, 2799 flow [2024-06-28 03:03:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:50,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 03:03:50,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-28 03:03:50,733 INFO L175 Difference]: Start difference. First operand has 180 places, 234 transitions, 2267 flow. Second operand 7 states and 139 transitions. [2024-06-28 03:03:50,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 252 transitions, 2799 flow [2024-06-28 03:03:50,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 252 transitions, 2720 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 03:03:50,920 INFO L231 Difference]: Finished difference. Result has 184 places, 237 transitions, 2282 flow [2024-06-28 03:03:50,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2282, PETRI_PLACES=184, PETRI_TRANSITIONS=237} [2024-06-28 03:03:50,920 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 140 predicate places. [2024-06-28 03:03:50,920 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 237 transitions, 2282 flow [2024-06-28 03:03:50,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:50,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:50,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:50,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:03:50,921 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 03:03:50,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash -153737637, now seen corresponding path program 1 times [2024-06-28 03:03:50,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:50,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016954839] [2024-06-28 03:03:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:51,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:51,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016954839] [2024-06-28 03:03:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016954839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:51,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:51,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:51,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911588435] [2024-06-28 03:03:51,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:51,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:51,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:51,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:51,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:51,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:03:51,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 237 transitions, 2282 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:51,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:51,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:03:51,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:52,451 INFO L124 PetriNetUnfolderBase]: 2122/3409 cut-off events. [2024-06-28 03:03:52,451 INFO L125 PetriNetUnfolderBase]: For 279573/279573 co-relation queries the response was YES. [2024-06-28 03:03:52,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28481 conditions, 3409 events. 2122/3409 cut-off events. For 279573/279573 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 18475 event pairs, 558 based on Foata normal form. 4/3412 useless extension candidates. Maximal degree in co-relation 28400. Up to 2974 conditions per place. [2024-06-28 03:03:52,479 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 204 selfloop transitions, 16 changer transitions 0/254 dead transitions. [2024-06-28 03:03:52,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 254 transitions, 2810 flow [2024-06-28 03:03:52,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 03:03:52,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584717607973422 [2024-06-28 03:03:52,481 INFO L175 Difference]: Start difference. First operand has 184 places, 237 transitions, 2282 flow. Second operand 7 states and 138 transitions. [2024-06-28 03:03:52,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 254 transitions, 2810 flow [2024-06-28 03:03:52,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 254 transitions, 2738 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:52,707 INFO L231 Difference]: Finished difference. Result has 186 places, 241 transitions, 2305 flow [2024-06-28 03:03:52,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2305, PETRI_PLACES=186, PETRI_TRANSITIONS=241} [2024-06-28 03:03:52,707 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 142 predicate places. [2024-06-28 03:03:52,707 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 241 transitions, 2305 flow [2024-06-28 03:03:52,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:52,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:52,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:52,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:03:52,708 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 03:03:52,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:52,709 INFO L85 PathProgramCache]: Analyzing trace with hash -841189957, now seen corresponding path program 2 times [2024-06-28 03:03:52,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:52,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756736183] [2024-06-28 03:03:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:52,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:53,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:53,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756736183] [2024-06-28 03:03:53,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756736183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:53,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:53,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:53,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648461668] [2024-06-28 03:03:53,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:53,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:53,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:53,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:53,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:53,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:03:53,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 241 transitions, 2305 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:53,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:53,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:03:53,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:54,328 INFO L124 PetriNetUnfolderBase]: 2148/3452 cut-off events. [2024-06-28 03:03:54,328 INFO L125 PetriNetUnfolderBase]: For 294485/294487 co-relation queries the response was YES. [2024-06-28 03:03:54,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29521 conditions, 3452 events. 2148/3452 cut-off events. For 294485/294487 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 18803 event pairs, 559 based on Foata normal form. 5/3456 useless extension candidates. Maximal degree in co-relation 29439. Up to 2965 conditions per place. [2024-06-28 03:03:54,358 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 197 selfloop transitions, 31 changer transitions 0/262 dead transitions. [2024-06-28 03:03:54,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 262 transitions, 3021 flow [2024-06-28 03:03:54,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 03:03:54,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684385382059801 [2024-06-28 03:03:54,360 INFO L175 Difference]: Start difference. First operand has 186 places, 241 transitions, 2305 flow. Second operand 7 states and 141 transitions. [2024-06-28 03:03:54,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 262 transitions, 3021 flow [2024-06-28 03:03:54,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 262 transitions, 2954 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:54,596 INFO L231 Difference]: Finished difference. Result has 189 places, 249 transitions, 2449 flow [2024-06-28 03:03:54,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2449, PETRI_PLACES=189, PETRI_TRANSITIONS=249} [2024-06-28 03:03:54,596 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 145 predicate places. [2024-06-28 03:03:54,596 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 249 transitions, 2449 flow [2024-06-28 03:03:54,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:54,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:54,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:54,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:03:54,602 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 03:03:54,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:54,602 INFO L85 PathProgramCache]: Analyzing trace with hash -841427107, now seen corresponding path program 3 times [2024-06-28 03:03:54,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:54,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533311222] [2024-06-28 03:03:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:54,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:55,592 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 03:03:55,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:55,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533311222] [2024-06-28 03:03:55,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533311222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:55,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:55,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:03:55,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241242748] [2024-06-28 03:03:55,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:55,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:03:55,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:55,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:03:55,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:03:55,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:03:55,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 249 transitions, 2449 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:55,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:55,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:03:55,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:56,355 INFO L124 PetriNetUnfolderBase]: 2141/3441 cut-off events. [2024-06-28 03:03:56,356 INFO L125 PetriNetUnfolderBase]: For 305059/305061 co-relation queries the response was YES. [2024-06-28 03:03:56,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30255 conditions, 3441 events. 2141/3441 cut-off events. For 305059/305061 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 18621 event pairs, 561 based on Foata normal form. 6/3446 useless extension candidates. Maximal degree in co-relation 30171. Up to 2998 conditions per place. [2024-06-28 03:03:56,384 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 209 selfloop transitions, 21 changer transitions 0/264 dead transitions. [2024-06-28 03:03:56,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 264 transitions, 3022 flow [2024-06-28 03:03:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:03:56,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:03:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 03:03:56,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584717607973422 [2024-06-28 03:03:56,388 INFO L175 Difference]: Start difference. First operand has 189 places, 249 transitions, 2449 flow. Second operand 7 states and 138 transitions. [2024-06-28 03:03:56,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 264 transitions, 3022 flow [2024-06-28 03:03:56,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 264 transitions, 2961 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 03:03:56,657 INFO L231 Difference]: Finished difference. Result has 193 places, 253 transitions, 2510 flow [2024-06-28 03:03:56,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2510, PETRI_PLACES=193, PETRI_TRANSITIONS=253} [2024-06-28 03:03:56,657 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 149 predicate places. [2024-06-28 03:03:56,658 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 253 transitions, 2510 flow [2024-06-28 03:03:56,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:56,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:56,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:03:56,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:03:56,658 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 03:03:56,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:56,659 INFO L85 PathProgramCache]: Analyzing trace with hash -841181029, now seen corresponding path program 1 times [2024-06-28 03:03:56,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:56,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748424627] [2024-06-28 03:03:56,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:56,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:57,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:57,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748424627] [2024-06-28 03:03:57,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748424627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:57,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:57,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:03:57,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116791003] [2024-06-28 03:03:57,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:57,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:03:57,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:57,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:03:57,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:03:58,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:03:58,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 253 transitions, 2510 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:58,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:03:58,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:03:58,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:03:58,645 INFO L124 PetriNetUnfolderBase]: 2136/3423 cut-off events. [2024-06-28 03:03:58,645 INFO L125 PetriNetUnfolderBase]: For 308328/308330 co-relation queries the response was YES. [2024-06-28 03:03:58,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30721 conditions, 3423 events. 2136/3423 cut-off events. For 308328/308330 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 18618 event pairs, 599 based on Foata normal form. 3/3420 useless extension candidates. Maximal degree in co-relation 30635. Up to 3058 conditions per place. [2024-06-28 03:03:58,677 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 212 selfloop transitions, 18 changer transitions 0/265 dead transitions. [2024-06-28 03:03:58,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 265 transitions, 3026 flow [2024-06-28 03:03:58,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:03:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:03:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:03:58,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-28 03:03:58,683 INFO L175 Difference]: Start difference. First operand has 193 places, 253 transitions, 2510 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:03:58,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 265 transitions, 3026 flow [2024-06-28 03:03:58,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 265 transitions, 2953 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:03:58,932 INFO L231 Difference]: Finished difference. Result has 196 places, 255 transitions, 2513 flow [2024-06-28 03:03:58,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2437, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2513, PETRI_PLACES=196, PETRI_TRANSITIONS=255} [2024-06-28 03:03:58,933 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 152 predicate places. [2024-06-28 03:03:58,933 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 255 transitions, 2513 flow [2024-06-28 03:03:58,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:03:58,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:03:58,933 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 03:03:58,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:03:58,934 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:03:58,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:03:58,934 INFO L85 PathProgramCache]: Analyzing trace with hash 897630992, now seen corresponding path program 1 times [2024-06-28 03:03:58,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:03:58,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974849928] [2024-06-28 03:03:58,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:03:58,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:03:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:03:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:03:59,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:03:59,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974849928] [2024-06-28 03:03:59,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974849928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:03:59,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:03:59,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:03:59,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455054920] [2024-06-28 03:03:59,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:03:59,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:03:59,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:03:59,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:03:59,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:00,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:00,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 255 transitions, 2513 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:00,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:00,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:00,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:01,213 INFO L124 PetriNetUnfolderBase]: 2562/3978 cut-off events. [2024-06-28 03:04:01,213 INFO L125 PetriNetUnfolderBase]: For 372081/372081 co-relation queries the response was YES. [2024-06-28 03:04:01,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35485 conditions, 3978 events. 2562/3978 cut-off events. For 372081/372081 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 21223 event pairs, 508 based on Foata normal form. 16/3993 useless extension candidates. Maximal degree in co-relation 35398. Up to 3455 conditions per place. [2024-06-28 03:04:01,246 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 278 selfloop transitions, 32 changer transitions 0/315 dead transitions. [2024-06-28 03:04:01,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 315 transitions, 3655 flow [2024-06-28 03:04:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-28 03:04:01,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 03:04:01,247 INFO L175 Difference]: Start difference. First operand has 196 places, 255 transitions, 2513 flow. Second operand 11 states and 220 transitions. [2024-06-28 03:04:01,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 315 transitions, 3655 flow [2024-06-28 03:04:01,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 315 transitions, 3543 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:01,509 INFO L231 Difference]: Finished difference. Result has 200 places, 257 transitions, 2569 flow [2024-06-28 03:04:01,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2569, PETRI_PLACES=200, PETRI_TRANSITIONS=257} [2024-06-28 03:04:01,512 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 156 predicate places. [2024-06-28 03:04:01,512 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 257 transitions, 2569 flow [2024-06-28 03:04:01,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:01,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:01,513 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 03:04:01,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:04:01,513 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:01,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:01,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1140813804, now seen corresponding path program 2 times [2024-06-28 03:04:01,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:01,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336031103] [2024-06-28 03:04:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:01,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:02,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:02,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336031103] [2024-06-28 03:04:02,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336031103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:02,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:02,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:02,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804034171] [2024-06-28 03:04:02,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:02,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:02,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:02,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:02,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:02,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 257 transitions, 2569 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:02,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:02,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:02,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:03,580 INFO L124 PetriNetUnfolderBase]: 2526/3923 cut-off events. [2024-06-28 03:04:03,580 INFO L125 PetriNetUnfolderBase]: For 364212/364212 co-relation queries the response was YES. [2024-06-28 03:04:03,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34502 conditions, 3923 events. 2526/3923 cut-off events. For 364212/364212 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 20773 event pairs, 612 based on Foata normal form. 20/3942 useless extension candidates. Maximal degree in co-relation 34415. Up to 3567 conditions per place. [2024-06-28 03:04:03,616 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 271 selfloop transitions, 29 changer transitions 0/305 dead transitions. [2024-06-28 03:04:03,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 305 transitions, 3361 flow [2024-06-28 03:04:03,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:03,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 03:04:03,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2024-06-28 03:04:03,617 INFO L175 Difference]: Start difference. First operand has 200 places, 257 transitions, 2569 flow. Second operand 10 states and 198 transitions. [2024-06-28 03:04:03,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 305 transitions, 3361 flow [2024-06-28 03:04:03,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 305 transitions, 3259 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 03:04:03,996 INFO L231 Difference]: Finished difference. Result has 203 places, 257 transitions, 2532 flow [2024-06-28 03:04:03,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2532, PETRI_PLACES=203, PETRI_TRANSITIONS=257} [2024-06-28 03:04:03,996 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 159 predicate places. [2024-06-28 03:04:03,997 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 257 transitions, 2532 flow [2024-06-28 03:04:03,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:03,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:03,997 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 03:04:03,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:04:03,997 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:03,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:03,998 INFO L85 PathProgramCache]: Analyzing trace with hash -196476322, now seen corresponding path program 3 times [2024-06-28 03:04:03,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:03,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371374356] [2024-06-28 03:04:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:03,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:04,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371374356] [2024-06-28 03:04:04,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371374356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:04,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:04,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:04,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082398517] [2024-06-28 03:04:04,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:04,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:04,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:04,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:04,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:05,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:05,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 257 transitions, 2532 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:05,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:05,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:05,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:06,145 INFO L124 PetriNetUnfolderBase]: 2601/4048 cut-off events. [2024-06-28 03:04:06,145 INFO L125 PetriNetUnfolderBase]: For 380755/380755 co-relation queries the response was YES. [2024-06-28 03:04:06,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35215 conditions, 4048 events. 2601/4048 cut-off events. For 380755/380755 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 21638 event pairs, 584 based on Foata normal form. 20/4066 useless extension candidates. Maximal degree in co-relation 35126. Up to 3279 conditions per place. [2024-06-28 03:04:06,181 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 190 selfloop transitions, 109 changer transitions 0/304 dead transitions. [2024-06-28 03:04:06,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 304 transitions, 3380 flow [2024-06-28 03:04:06,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-28 03:04:06,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790697674418605 [2024-06-28 03:04:06,182 INFO L175 Difference]: Start difference. First operand has 203 places, 257 transitions, 2532 flow. Second operand 10 states and 206 transitions. [2024-06-28 03:04:06,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 304 transitions, 3380 flow [2024-06-28 03:04:06,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 304 transitions, 3317 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:06,389 INFO L231 Difference]: Finished difference. Result has 204 places, 258 transitions, 2746 flow [2024-06-28 03:04:06,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2469, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2746, PETRI_PLACES=204, PETRI_TRANSITIONS=258} [2024-06-28 03:04:06,390 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 160 predicate places. [2024-06-28 03:04:06,390 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 258 transitions, 2746 flow [2024-06-28 03:04:06,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:06,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:06,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:04:06,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:04:06,390 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:06,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:06,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1015963820, now seen corresponding path program 1 times [2024-06-28 03:04:06,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:06,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414194895] [2024-06-28 03:04:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:06,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:07,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:07,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414194895] [2024-06-28 03:04:07,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414194895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:07,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:07,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:07,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823581280] [2024-06-28 03:04:07,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:07,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:07,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:07,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:07,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:07,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 258 transitions, 2746 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:07,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:07,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:07,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:08,767 INFO L124 PetriNetUnfolderBase]: 2763/4324 cut-off events. [2024-06-28 03:04:08,767 INFO L125 PetriNetUnfolderBase]: For 380151/380151 co-relation queries the response was YES. [2024-06-28 03:04:08,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37190 conditions, 4324 events. 2763/4324 cut-off events. For 380151/380151 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 23647 event pairs, 656 based on Foata normal form. 4/4326 useless extension candidates. Maximal degree in co-relation 37100. Up to 3625 conditions per place. [2024-06-28 03:04:08,807 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 208 selfloop transitions, 118 changer transitions 0/331 dead transitions. [2024-06-28 03:04:08,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 331 transitions, 3921 flow [2024-06-28 03:04:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:08,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:08,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-28 03:04:08,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4439746300211416 [2024-06-28 03:04:08,809 INFO L175 Difference]: Start difference. First operand has 204 places, 258 transitions, 2746 flow. Second operand 11 states and 210 transitions. [2024-06-28 03:04:08,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 331 transitions, 3921 flow [2024-06-28 03:04:09,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 331 transitions, 3618 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:09,184 INFO L231 Difference]: Finished difference. Result has 211 places, 292 transitions, 3145 flow [2024-06-28 03:04:09,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3145, PETRI_PLACES=211, PETRI_TRANSITIONS=292} [2024-06-28 03:04:09,185 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 167 predicate places. [2024-06-28 03:04:09,185 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 292 transitions, 3145 flow [2024-06-28 03:04:09,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:09,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:09,185 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 03:04:09,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:04:09,186 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:09,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash -442758900, now seen corresponding path program 4 times [2024-06-28 03:04:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:09,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800140013] [2024-06-28 03:04:09,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:09,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:10,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:10,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800140013] [2024-06-28 03:04:10,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800140013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:10,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:10,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:10,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764530522] [2024-06-28 03:04:10,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:10,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:10,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:10,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:10,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:10,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:10,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 292 transitions, 3145 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:10,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:10,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:10,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:11,582 INFO L124 PetriNetUnfolderBase]: 2838/4431 cut-off events. [2024-06-28 03:04:11,583 INFO L125 PetriNetUnfolderBase]: For 413182/413182 co-relation queries the response was YES. [2024-06-28 03:04:11,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38576 conditions, 4431 events. 2838/4431 cut-off events. For 413182/413182 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 24249 event pairs, 594 based on Foata normal form. 20/4449 useless extension candidates. Maximal degree in co-relation 38481. Up to 3487 conditions per place. [2024-06-28 03:04:11,622 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 209 selfloop transitions, 123 changer transitions 0/337 dead transitions. [2024-06-28 03:04:11,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 337 transitions, 4077 flow [2024-06-28 03:04:11,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:11,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 03:04:11,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744186046511628 [2024-06-28 03:04:11,624 INFO L175 Difference]: Start difference. First operand has 211 places, 292 transitions, 3145 flow. Second operand 10 states and 204 transitions. [2024-06-28 03:04:11,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 337 transitions, 4077 flow [2024-06-28 03:04:11,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 337 transitions, 3887 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:11,984 INFO L231 Difference]: Finished difference. Result has 218 places, 293 transitions, 3266 flow [2024-06-28 03:04:11,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3266, PETRI_PLACES=218, PETRI_TRANSITIONS=293} [2024-06-28 03:04:11,984 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 174 predicate places. [2024-06-28 03:04:11,984 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 293 transitions, 3266 flow [2024-06-28 03:04:11,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:11,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:11,985 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 03:04:11,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:04:11,985 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:11,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash -24396380, now seen corresponding path program 2 times [2024-06-28 03:04:11,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:11,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816186367] [2024-06-28 03:04:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:11,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:13,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:13,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816186367] [2024-06-28 03:04:13,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816186367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:13,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:13,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:13,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833540387] [2024-06-28 03:04:13,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:13,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:13,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:13,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:13,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:13,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:13,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 293 transitions, 3266 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:13,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:13,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:13,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:14,362 INFO L124 PetriNetUnfolderBase]: 2877/4520 cut-off events. [2024-06-28 03:04:14,362 INFO L125 PetriNetUnfolderBase]: For 410839/410839 co-relation queries the response was YES. [2024-06-28 03:04:14,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39288 conditions, 4520 events. 2877/4520 cut-off events. For 410839/410839 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 25108 event pairs, 637 based on Foata normal form. 4/4522 useless extension candidates. Maximal degree in co-relation 39191. Up to 3796 conditions per place. [2024-06-28 03:04:14,406 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 211 selfloop transitions, 128 changer transitions 0/344 dead transitions. [2024-06-28 03:04:14,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 344 transitions, 4254 flow [2024-06-28 03:04:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:14,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 03:04:14,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-28 03:04:14,408 INFO L175 Difference]: Start difference. First operand has 218 places, 293 transitions, 3266 flow. Second operand 10 states and 197 transitions. [2024-06-28 03:04:14,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 344 transitions, 4254 flow [2024-06-28 03:04:14,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 344 transitions, 3951 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:14,716 INFO L231 Difference]: Finished difference. Result has 221 places, 308 transitions, 3441 flow [2024-06-28 03:04:14,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2985, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3441, PETRI_PLACES=221, PETRI_TRANSITIONS=308} [2024-06-28 03:04:14,716 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 177 predicate places. [2024-06-28 03:04:14,717 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 308 transitions, 3441 flow [2024-06-28 03:04:14,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:14,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:14,717 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 03:04:14,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:04:14,717 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:14,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:14,718 INFO L85 PathProgramCache]: Analyzing trace with hash -24157370, now seen corresponding path program 3 times [2024-06-28 03:04:14,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:14,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463410816] [2024-06-28 03:04:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:14,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:15,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:15,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463410816] [2024-06-28 03:04:15,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463410816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:15,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:15,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:15,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142823197] [2024-06-28 03:04:15,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:15,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:15,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:15,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:15,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:15,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:15,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 308 transitions, 3441 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:15,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:15,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:15,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:17,068 INFO L124 PetriNetUnfolderBase]: 2919/4571 cut-off events. [2024-06-28 03:04:17,069 INFO L125 PetriNetUnfolderBase]: For 428294/428294 co-relation queries the response was YES. [2024-06-28 03:04:17,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40228 conditions, 4571 events. 2919/4571 cut-off events. For 428294/428294 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 25365 event pairs, 630 based on Foata normal form. 4/4573 useless extension candidates. Maximal degree in co-relation 40129. Up to 3764 conditions per place. [2024-06-28 03:04:17,110 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 212 selfloop transitions, 134 changer transitions 0/351 dead transitions. [2024-06-28 03:04:17,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 351 transitions, 4593 flow [2024-06-28 03:04:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:17,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 03:04:17,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 03:04:17,112 INFO L175 Difference]: Start difference. First operand has 221 places, 308 transitions, 3441 flow. Second operand 10 states and 200 transitions. [2024-06-28 03:04:17,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 351 transitions, 4593 flow [2024-06-28 03:04:17,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 351 transitions, 4316 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:17,581 INFO L231 Difference]: Finished difference. Result has 226 places, 312 transitions, 3577 flow [2024-06-28 03:04:17,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3166, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3577, PETRI_PLACES=226, PETRI_TRANSITIONS=312} [2024-06-28 03:04:17,583 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 182 predicate places. [2024-06-28 03:04:17,583 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 312 transitions, 3577 flow [2024-06-28 03:04:17,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:17,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:17,583 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 03:04:17,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:04:17,584 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:17,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1181602954, now seen corresponding path program 4 times [2024-06-28 03:04:17,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:17,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206609941] [2024-06-28 03:04:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:17,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:18,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206609941] [2024-06-28 03:04:18,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206609941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:18,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:18,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:18,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131348962] [2024-06-28 03:04:18,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:18,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:18,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:18,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:18,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:18,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 312 transitions, 3577 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:18,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:18,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:18,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:20,132 INFO L124 PetriNetUnfolderBase]: 2936/4606 cut-off events. [2024-06-28 03:04:20,132 INFO L125 PetriNetUnfolderBase]: For 441023/441023 co-relation queries the response was YES. [2024-06-28 03:04:20,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40557 conditions, 4606 events. 2936/4606 cut-off events. For 441023/441023 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 25624 event pairs, 689 based on Foata normal form. 4/4608 useless extension candidates. Maximal degree in co-relation 40457. Up to 3894 conditions per place. [2024-06-28 03:04:20,173 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 225 selfloop transitions, 123 changer transitions 0/353 dead transitions. [2024-06-28 03:04:20,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 353 transitions, 4522 flow [2024-06-28 03:04:20,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-28 03:04:20,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44608879492600423 [2024-06-28 03:04:20,175 INFO L175 Difference]: Start difference. First operand has 226 places, 312 transitions, 3577 flow. Second operand 11 states and 211 transitions. [2024-06-28 03:04:20,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 353 transitions, 4522 flow [2024-06-28 03:04:20,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 353 transitions, 4273 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:20,600 INFO L231 Difference]: Finished difference. Result has 233 places, 316 transitions, 3731 flow [2024-06-28 03:04:20,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3348, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3731, PETRI_PLACES=233, PETRI_TRANSITIONS=316} [2024-06-28 03:04:20,600 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 189 predicate places. [2024-06-28 03:04:20,600 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 316 transitions, 3731 flow [2024-06-28 03:04:20,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:20,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:20,601 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 03:04:20,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:04:20,601 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 03:04:20,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:20,611 INFO L85 PathProgramCache]: Analyzing trace with hash 784252244, now seen corresponding path program 1 times [2024-06-28 03:04:20,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:20,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756812755] [2024-06-28 03:04:20,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:20,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:21,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:21,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756812755] [2024-06-28 03:04:21,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756812755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:21,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:21,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:21,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057581519] [2024-06-28 03:04:21,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:21,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:21,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:21,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:21,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:21,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:04:21,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 316 transitions, 3731 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:21,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:21,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:04:21,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:22,199 INFO L124 PetriNetUnfolderBase]: 2802/4456 cut-off events. [2024-06-28 03:04:22,199 INFO L125 PetriNetUnfolderBase]: For 455818/455833 co-relation queries the response was YES. [2024-06-28 03:04:22,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40063 conditions, 4456 events. 2802/4456 cut-off events. For 455818/455833 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 25377 event pairs, 633 based on Foata normal form. 17/4451 useless extension candidates. Maximal degree in co-relation 39959. Up to 4011 conditions per place. [2024-06-28 03:04:22,263 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 267 selfloop transitions, 37 changer transitions 0/339 dead transitions. [2024-06-28 03:04:22,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 339 transitions, 4483 flow [2024-06-28 03:04:22,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:22,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 03:04:22,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-28 03:04:22,264 INFO L175 Difference]: Start difference. First operand has 233 places, 316 transitions, 3731 flow. Second operand 7 states and 139 transitions. [2024-06-28 03:04:22,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 339 transitions, 4483 flow [2024-06-28 03:04:22,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 339 transitions, 4249 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:22,621 INFO L231 Difference]: Finished difference. Result has 235 places, 319 transitions, 3654 flow [2024-06-28 03:04:22,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3497, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3654, PETRI_PLACES=235, PETRI_TRANSITIONS=319} [2024-06-28 03:04:22,622 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 191 predicate places. [2024-06-28 03:04:22,622 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 319 transitions, 3654 flow [2024-06-28 03:04:22,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:22,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:22,623 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 03:04:22,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:04:22,623 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 03:04:22,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:22,623 INFO L85 PathProgramCache]: Analyzing trace with hash 789966164, now seen corresponding path program 2 times [2024-06-28 03:04:22,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:22,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305809348] [2024-06-28 03:04:22,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:22,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:23,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:23,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305809348] [2024-06-28 03:04:23,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305809348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:23,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:23,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:04:23,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511051629] [2024-06-28 03:04:23,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:23,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:04:23,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:23,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:04:23,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:04:23,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:04:23,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 319 transitions, 3654 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:23,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:23,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:04:23,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:24,272 INFO L124 PetriNetUnfolderBase]: 2832/4502 cut-off events. [2024-06-28 03:04:24,273 INFO L125 PetriNetUnfolderBase]: For 469243/469258 co-relation queries the response was YES. [2024-06-28 03:04:24,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40635 conditions, 4502 events. 2832/4502 cut-off events. For 469243/469258 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 25728 event pairs, 640 based on Foata normal form. 17/4506 useless extension candidates. Maximal degree in co-relation 40530. Up to 4027 conditions per place. [2024-06-28 03:04:24,317 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 265 selfloop transitions, 43 changer transitions 0/343 dead transitions. [2024-06-28 03:04:24,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 343 transitions, 4618 flow [2024-06-28 03:04:24,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:04:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:04:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 03:04:24,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46179401993355484 [2024-06-28 03:04:24,318 INFO L175 Difference]: Start difference. First operand has 235 places, 319 transitions, 3654 flow. Second operand 7 states and 139 transitions. [2024-06-28 03:04:24,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 343 transitions, 4618 flow [2024-06-28 03:04:24,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 343 transitions, 4511 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:24,771 INFO L231 Difference]: Finished difference. Result has 238 places, 325 transitions, 3793 flow [2024-06-28 03:04:24,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3547, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3793, PETRI_PLACES=238, PETRI_TRANSITIONS=325} [2024-06-28 03:04:24,772 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 194 predicate places. [2024-06-28 03:04:24,772 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 325 transitions, 3793 flow [2024-06-28 03:04:24,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:24,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:24,773 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 03:04:24,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:04:24,773 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:24,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:24,773 INFO L85 PathProgramCache]: Analyzing trace with hash -559521998, now seen corresponding path program 5 times [2024-06-28 03:04:24,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:24,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716420257] [2024-06-28 03:04:24,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:24,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:25,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:25,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716420257] [2024-06-28 03:04:25,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716420257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:25,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:25,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:25,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591310782] [2024-06-28 03:04:25,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:25,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:25,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:25,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:25,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:26,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:26,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 325 transitions, 3793 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:26,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:26,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:26,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:27,176 INFO L124 PetriNetUnfolderBase]: 3047/4773 cut-off events. [2024-06-28 03:04:27,176 INFO L125 PetriNetUnfolderBase]: For 518718/518718 co-relation queries the response was YES. [2024-06-28 03:04:27,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43502 conditions, 4773 events. 3047/4773 cut-off events. For 518718/518718 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 26705 event pairs, 599 based on Foata normal form. 20/4791 useless extension candidates. Maximal degree in co-relation 43396. Up to 3796 conditions per place. [2024-06-28 03:04:27,311 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 238 selfloop transitions, 126 changer transitions 0/369 dead transitions. [2024-06-28 03:04:27,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 369 transitions, 4797 flow [2024-06-28 03:04:27,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:27,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:27,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-28 03:04:27,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697674418604651 [2024-06-28 03:04:27,312 INFO L175 Difference]: Start difference. First operand has 238 places, 325 transitions, 3793 flow. Second operand 10 states and 202 transitions. [2024-06-28 03:04:27,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 369 transitions, 4797 flow [2024-06-28 03:04:27,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 369 transitions, 4686 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 03:04:27,807 INFO L231 Difference]: Finished difference. Result has 245 places, 326 transitions, 4003 flow [2024-06-28 03:04:27,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3682, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4003, PETRI_PLACES=245, PETRI_TRANSITIONS=326} [2024-06-28 03:04:27,807 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 201 predicate places. [2024-06-28 03:04:27,807 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 326 transitions, 4003 flow [2024-06-28 03:04:27,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:27,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:27,808 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 03:04:27,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:04:27,808 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:27,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:27,809 INFO L85 PathProgramCache]: Analyzing trace with hash -552850550, now seen corresponding path program 5 times [2024-06-28 03:04:27,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:27,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144667182] [2024-06-28 03:04:27,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:27,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:28,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:28,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144667182] [2024-06-28 03:04:28,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144667182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:28,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:28,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:28,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840193413] [2024-06-28 03:04:28,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:28,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:28,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:28,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:28,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:28,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:28,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 326 transitions, 4003 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:28,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:28,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:28,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:30,060 INFO L124 PetriNetUnfolderBase]: 3108/4894 cut-off events. [2024-06-28 03:04:30,061 INFO L125 PetriNetUnfolderBase]: For 513289/513289 co-relation queries the response was YES. [2024-06-28 03:04:30,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44821 conditions, 4894 events. 3108/4894 cut-off events. For 513289/513289 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 27726 event pairs, 642 based on Foata normal form. 4/4896 useless extension candidates. Maximal degree in co-relation 44713. Up to 4139 conditions per place. [2024-06-28 03:04:30,109 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 238 selfloop transitions, 133 changer transitions 0/376 dead transitions. [2024-06-28 03:04:30,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 376 transitions, 5091 flow [2024-06-28 03:04:30,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 03:04:30,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-28 03:04:30,110 INFO L175 Difference]: Start difference. First operand has 245 places, 326 transitions, 4003 flow. Second operand 10 states and 197 transitions. [2024-06-28 03:04:30,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 376 transitions, 5091 flow [2024-06-28 03:04:30,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 376 transitions, 4774 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 03:04:30,606 INFO L231 Difference]: Finished difference. Result has 248 places, 341 transitions, 4216 flow [2024-06-28 03:04:30,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3710, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4216, PETRI_PLACES=248, PETRI_TRANSITIONS=341} [2024-06-28 03:04:30,607 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 204 predicate places. [2024-06-28 03:04:30,607 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 341 transitions, 4216 flow [2024-06-28 03:04:30,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:30,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:30,607 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 03:04:30,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:04:30,608 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:30,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:30,608 INFO L85 PathProgramCache]: Analyzing trace with hash -552842180, now seen corresponding path program 6 times [2024-06-28 03:04:30,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:30,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703074492] [2024-06-28 03:04:30,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:30,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:31,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:31,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703074492] [2024-06-28 03:04:31,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703074492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:31,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:31,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:31,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247839445] [2024-06-28 03:04:31,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:31,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:31,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:31,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:31,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:31,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:31,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 341 transitions, 4216 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:31,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:31,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:31,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:33,084 INFO L124 PetriNetUnfolderBase]: 3150/4950 cut-off events. [2024-06-28 03:04:33,085 INFO L125 PetriNetUnfolderBase]: For 532492/532492 co-relation queries the response was YES. [2024-06-28 03:04:33,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45821 conditions, 4950 events. 3150/4950 cut-off events. For 532492/532492 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 27987 event pairs, 644 based on Foata normal form. 4/4952 useless extension candidates. Maximal degree in co-relation 45711. Up to 4130 conditions per place. [2024-06-28 03:04:33,126 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 241 selfloop transitions, 137 changer transitions 0/383 dead transitions. [2024-06-28 03:04:33,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 383 transitions, 5472 flow [2024-06-28 03:04:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 03:04:33,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 03:04:33,128 INFO L175 Difference]: Start difference. First operand has 248 places, 341 transitions, 4216 flow. Second operand 10 states and 200 transitions. [2024-06-28 03:04:33,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 383 transitions, 5472 flow [2024-06-28 03:04:33,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 383 transitions, 5174 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:33,708 INFO L231 Difference]: Finished difference. Result has 253 places, 345 transitions, 4357 flow [2024-06-28 03:04:33,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3920, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4357, PETRI_PLACES=253, PETRI_TRANSITIONS=345} [2024-06-28 03:04:33,708 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 209 predicate places. [2024-06-28 03:04:33,708 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 345 transitions, 4357 flow [2024-06-28 03:04:33,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:33,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:33,709 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 03:04:33,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:04:33,709 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:33,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:33,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1543452584, now seen corresponding path program 7 times [2024-06-28 03:04:33,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:33,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866729494] [2024-06-28 03:04:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:33,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:34,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:34,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866729494] [2024-06-28 03:04:34,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866729494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:34,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:34,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:34,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663759670] [2024-06-28 03:04:34,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:34,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:34,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:34,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:34,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:35,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:35,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 345 transitions, 4357 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:35,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:35,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:35,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:36,342 INFO L124 PetriNetUnfolderBase]: 3192/5018 cut-off events. [2024-06-28 03:04:36,342 INFO L125 PetriNetUnfolderBase]: For 556412/556412 co-relation queries the response was YES. [2024-06-28 03:04:36,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46737 conditions, 5018 events. 3192/5018 cut-off events. For 556412/556412 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 28490 event pairs, 648 based on Foata normal form. 4/5020 useless extension candidates. Maximal degree in co-relation 46626. Up to 4219 conditions per place. [2024-06-28 03:04:36,396 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 245 selfloop transitions, 142 changer transitions 0/392 dead transitions. [2024-06-28 03:04:36,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 392 transitions, 5703 flow [2024-06-28 03:04:36,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:36,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-28 03:04:36,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627906976744186 [2024-06-28 03:04:36,403 INFO L175 Difference]: Start difference. First operand has 253 places, 345 transitions, 4357 flow. Second operand 10 states and 199 transitions. [2024-06-28 03:04:36,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 392 transitions, 5703 flow [2024-06-28 03:04:37,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 392 transitions, 5458 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:37,012 INFO L231 Difference]: Finished difference. Result has 257 places, 353 transitions, 4623 flow [2024-06-28 03:04:37,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4116, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4623, PETRI_PLACES=257, PETRI_TRANSITIONS=353} [2024-06-28 03:04:37,013 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 213 predicate places. [2024-06-28 03:04:37,013 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 353 transitions, 4623 flow [2024-06-28 03:04:37,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:37,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:37,013 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 03:04:37,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:04:37,014 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:37,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:37,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1543691594, now seen corresponding path program 8 times [2024-06-28 03:04:37,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:37,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302972421] [2024-06-28 03:04:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:37,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:38,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:38,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302972421] [2024-06-28 03:04:38,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302972421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:38,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:38,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:38,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955685006] [2024-06-28 03:04:38,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:38,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:38,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:38,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:38,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:38,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:38,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 353 transitions, 4623 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:38,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:38,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:38,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:39,629 INFO L124 PetriNetUnfolderBase]: 3184/5006 cut-off events. [2024-06-28 03:04:39,630 INFO L125 PetriNetUnfolderBase]: For 563737/563737 co-relation queries the response was YES. [2024-06-28 03:04:39,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46994 conditions, 5006 events. 3184/5006 cut-off events. For 563737/563737 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 28420 event pairs, 651 based on Foata normal form. 4/5008 useless extension candidates. Maximal degree in co-relation 46881. Up to 4259 conditions per place. [2024-06-28 03:04:39,677 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 244 selfloop transitions, 140 changer transitions 0/389 dead transitions. [2024-06-28 03:04:39,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 389 transitions, 5515 flow [2024-06-28 03:04:39,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:39,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 03:04:39,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-28 03:04:39,679 INFO L175 Difference]: Start difference. First operand has 257 places, 353 transitions, 4623 flow. Second operand 10 states and 195 transitions. [2024-06-28 03:04:39,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 389 transitions, 5515 flow [2024-06-28 03:04:40,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 389 transitions, 5256 flow, removed 74 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:40,260 INFO L231 Difference]: Finished difference. Result has 263 places, 353 transitions, 4652 flow [2024-06-28 03:04:40,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4364, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4652, PETRI_PLACES=263, PETRI_TRANSITIONS=353} [2024-06-28 03:04:40,260 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 219 predicate places. [2024-06-28 03:04:40,260 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 353 transitions, 4652 flow [2024-06-28 03:04:40,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:40,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:40,261 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 03:04:40,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:04:40,261 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:40,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:40,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1535120714, now seen corresponding path program 9 times [2024-06-28 03:04:40,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:40,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415876243] [2024-06-28 03:04:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:40,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:41,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:41,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415876243] [2024-06-28 03:04:41,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415876243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:41,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:41,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:41,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533980378] [2024-06-28 03:04:41,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:41,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:41,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:41,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:41,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:41,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:41,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 353 transitions, 4652 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:41,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:41,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:41,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:42,797 INFO L124 PetriNetUnfolderBase]: 3396/5340 cut-off events. [2024-06-28 03:04:42,797 INFO L125 PetriNetUnfolderBase]: For 587730/587730 co-relation queries the response was YES. [2024-06-28 03:04:42,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49054 conditions, 5340 events. 3396/5340 cut-off events. For 587730/587730 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30778 event pairs, 713 based on Foata normal form. 4/5342 useless extension candidates. Maximal degree in co-relation 48939. Up to 4298 conditions per place. [2024-06-28 03:04:42,852 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 257 selfloop transitions, 158 changer transitions 0/420 dead transitions. [2024-06-28 03:04:42,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 420 transitions, 6168 flow [2024-06-28 03:04:42,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:04:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:04:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 03:04:42,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2024-06-28 03:04:42,854 INFO L175 Difference]: Start difference. First operand has 263 places, 353 transitions, 4652 flow. Second operand 11 states and 214 transitions. [2024-06-28 03:04:42,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 420 transitions, 6168 flow [2024-06-28 03:04:43,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 420 transitions, 5858 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:04:43,565 INFO L231 Difference]: Finished difference. Result has 268 places, 377 transitions, 5065 flow [2024-06-28 03:04:43,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4358, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5065, PETRI_PLACES=268, PETRI_TRANSITIONS=377} [2024-06-28 03:04:43,566 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 224 predicate places. [2024-06-28 03:04:43,566 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 377 transitions, 5065 flow [2024-06-28 03:04:43,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:43,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:43,566 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 03:04:43,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:04:43,567 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:04:43,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:43,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1771592744, now seen corresponding path program 10 times [2024-06-28 03:04:43,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:43,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959038070] [2024-06-28 03:04:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:44,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:44,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959038070] [2024-06-28 03:04:44,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959038070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:44,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:44,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:04:44,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386111658] [2024-06-28 03:04:44,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:44,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:04:44,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:44,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:04:44,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:04:44,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:04:44,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 377 transitions, 5065 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:44,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:44,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:04:44,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:46,047 INFO L124 PetriNetUnfolderBase]: 3380/5316 cut-off events. [2024-06-28 03:04:46,047 INFO L125 PetriNetUnfolderBase]: For 596880/596880 co-relation queries the response was YES. [2024-06-28 03:04:46,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49237 conditions, 5316 events. 3380/5316 cut-off events. For 596880/596880 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 30504 event pairs, 672 based on Foata normal form. 8/5322 useless extension candidates. Maximal degree in co-relation 49118. Up to 4558 conditions per place. [2024-06-28 03:04:46,104 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 264 selfloop transitions, 143 changer transitions 0/412 dead transitions. [2024-06-28 03:04:46,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 412 transitions, 5997 flow [2024-06-28 03:04:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:04:46,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:04:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:04:46,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 03:04:46,106 INFO L175 Difference]: Start difference. First operand has 268 places, 377 transitions, 5065 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:04:46,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 412 transitions, 5997 flow [2024-06-28 03:04:46,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 412 transitions, 5644 flow, removed 86 selfloop flow, removed 4 redundant places. [2024-06-28 03:04:46,959 INFO L231 Difference]: Finished difference. Result has 274 places, 377 transitions, 5008 flow [2024-06-28 03:04:46,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4712, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5008, PETRI_PLACES=274, PETRI_TRANSITIONS=377} [2024-06-28 03:04:46,960 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 230 predicate places. [2024-06-28 03:04:46,960 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 377 transitions, 5008 flow [2024-06-28 03:04:46,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:46,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:46,960 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 03:04:46,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:04:46,961 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 03:04:46,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash 778532372, now seen corresponding path program 1 times [2024-06-28 03:04:46,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:46,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702865130] [2024-06-28 03:04:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:46,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:47,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:47,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:47,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702865130] [2024-06-28 03:04:47,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702865130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:47,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:47,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:47,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4451415] [2024-06-28 03:04:47,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:47,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:47,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:47,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:47,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:47,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:04:47,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 377 transitions, 5008 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:47,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:47,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:04:47,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:48,892 INFO L124 PetriNetUnfolderBase]: 3213/5143 cut-off events. [2024-06-28 03:04:48,893 INFO L125 PetriNetUnfolderBase]: For 602643/602645 co-relation queries the response was YES. [2024-06-28 03:04:48,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47975 conditions, 5143 events. 3213/5143 cut-off events. For 602643/602645 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30338 event pairs, 694 based on Foata normal form. 4/5137 useless extension candidates. Maximal degree in co-relation 47855. Up to 4592 conditions per place. [2024-06-28 03:04:48,942 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 330 selfloop transitions, 32 changer transitions 0/408 dead transitions. [2024-06-28 03:04:48,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 408 transitions, 5889 flow [2024-06-28 03:04:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 03:04:48,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 03:04:48,944 INFO L175 Difference]: Start difference. First operand has 274 places, 377 transitions, 5008 flow. Second operand 8 states and 160 transitions. [2024-06-28 03:04:48,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 408 transitions, 5889 flow [2024-06-28 03:04:49,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 408 transitions, 5536 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:04:49,806 INFO L231 Difference]: Finished difference. Result has 272 places, 380 transitions, 4799 flow [2024-06-28 03:04:49,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4655, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4799, PETRI_PLACES=272, PETRI_TRANSITIONS=380} [2024-06-28 03:04:49,807 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 228 predicate places. [2024-06-28 03:04:49,807 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 380 transitions, 4799 flow [2024-06-28 03:04:49,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:49,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:49,807 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 03:04:49,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:04:49,808 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 03:04:49,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash 778861065, now seen corresponding path program 1 times [2024-06-28 03:04:49,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:49,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14829679] [2024-06-28 03:04:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:50,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:50,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14829679] [2024-06-28 03:04:50,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14829679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:50,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:50,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:50,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103350361] [2024-06-28 03:04:50,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:50,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:50,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:50,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:50,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:04:50,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 380 transitions, 4799 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:50,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:50,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:04:50,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:52,189 INFO L124 PetriNetUnfolderBase]: 3220/5163 cut-off events. [2024-06-28 03:04:52,189 INFO L125 PetriNetUnfolderBase]: For 614427/614427 co-relation queries the response was YES. [2024-06-28 03:04:52,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48107 conditions, 5163 events. 3220/5163 cut-off events. For 614427/614427 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 30545 event pairs, 707 based on Foata normal form. 1/5154 useless extension candidates. Maximal degree in co-relation 47987. Up to 4630 conditions per place. [2024-06-28 03:04:52,250 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 331 selfloop transitions, 28 changer transitions 0/405 dead transitions. [2024-06-28 03:04:52,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 405 transitions, 5658 flow [2024-06-28 03:04:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:04:52,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 03:04:52,251 INFO L175 Difference]: Start difference. First operand has 272 places, 380 transitions, 4799 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:04:52,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 405 transitions, 5658 flow [2024-06-28 03:04:52,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 405 transitions, 5540 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:52,958 INFO L231 Difference]: Finished difference. Result has 274 places, 383 transitions, 4819 flow [2024-06-28 03:04:52,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4681, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4819, PETRI_PLACES=274, PETRI_TRANSITIONS=383} [2024-06-28 03:04:52,968 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 230 predicate places. [2024-06-28 03:04:52,968 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 383 transitions, 4819 flow [2024-06-28 03:04:52,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:52,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:52,968 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 03:04:52,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:04:52,969 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 03:04:52,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash 778860662, now seen corresponding path program 2 times [2024-06-28 03:04:52,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:52,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965388792] [2024-06-28 03:04:52,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:52,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:53,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:53,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965388792] [2024-06-28 03:04:53,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965388792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:53,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:53,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:04:53,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814543905] [2024-06-28 03:04:53,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:53,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:04:53,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:53,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:04:53,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:04:53,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:04:53,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 383 transitions, 4819 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:53,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:53,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:04:53,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:54,921 INFO L124 PetriNetUnfolderBase]: 3222/5172 cut-off events. [2024-06-28 03:04:54,921 INFO L125 PetriNetUnfolderBase]: For 633294/633294 co-relation queries the response was YES. [2024-06-28 03:04:54,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48573 conditions, 5172 events. 3222/5172 cut-off events. For 633294/633294 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 30647 event pairs, 709 based on Foata normal form. 2/5164 useless extension candidates. Maximal degree in co-relation 48452. Up to 4602 conditions per place. [2024-06-28 03:04:54,980 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 326 selfloop transitions, 36 changer transitions 0/408 dead transitions. [2024-06-28 03:04:54,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 408 transitions, 5685 flow [2024-06-28 03:04:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:04:54,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-28 03:04:54,981 INFO L175 Difference]: Start difference. First operand has 274 places, 383 transitions, 4819 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:04:54,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 408 transitions, 5685 flow [2024-06-28 03:04:55,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 408 transitions, 5581 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 03:04:55,758 INFO L231 Difference]: Finished difference. Result has 277 places, 386 transitions, 4873 flow [2024-06-28 03:04:55,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4715, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4873, PETRI_PLACES=277, PETRI_TRANSITIONS=386} [2024-06-28 03:04:55,759 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 233 predicate places. [2024-06-28 03:04:55,759 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 386 transitions, 4873 flow [2024-06-28 03:04:55,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:55,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:55,759 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 03:04:55,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:04:55,759 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 03:04:55,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:55,760 INFO L85 PathProgramCache]: Analyzing trace with hash 789960212, now seen corresponding path program 3 times [2024-06-28 03:04:55,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:55,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552237971] [2024-06-28 03:04:55,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:55,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:56,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:56,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552237971] [2024-06-28 03:04:56,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552237971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:56,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:56,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:56,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674396793] [2024-06-28 03:04:56,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:56,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:56,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:56,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:56,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:56,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:04:56,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 386 transitions, 4873 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:56,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:56,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:04:56,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:04:57,785 INFO L124 PetriNetUnfolderBase]: 3232/5187 cut-off events. [2024-06-28 03:04:57,786 INFO L125 PetriNetUnfolderBase]: For 650043/650043 co-relation queries the response was YES. [2024-06-28 03:04:57,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49255 conditions, 5187 events. 3232/5187 cut-off events. For 650043/650043 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 30710 event pairs, 657 based on Foata normal form. 2/5179 useless extension candidates. Maximal degree in co-relation 49133. Up to 4596 conditions per place. [2024-06-28 03:04:57,845 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 320 selfloop transitions, 40 changer transitions 0/406 dead transitions. [2024-06-28 03:04:57,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 406 transitions, 5725 flow [2024-06-28 03:04:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:04:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:04:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:04:57,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 03:04:57,847 INFO L175 Difference]: Start difference. First operand has 277 places, 386 transitions, 4873 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:04:57,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 406 transitions, 5725 flow [2024-06-28 03:04:58,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 406 transitions, 5589 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:04:58,536 INFO L231 Difference]: Finished difference. Result has 279 places, 389 transitions, 4909 flow [2024-06-28 03:04:58,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4737, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4909, PETRI_PLACES=279, PETRI_TRANSITIONS=389} [2024-06-28 03:04:58,536 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 235 predicate places. [2024-06-28 03:04:58,536 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 389 transitions, 4909 flow [2024-06-28 03:04:58,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:58,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:04:58,537 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 03:04:58,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:04:58,537 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 03:04:58,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:04:58,537 INFO L85 PathProgramCache]: Analyzing trace with hash 789960615, now seen corresponding path program 2 times [2024-06-28 03:04:58,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:04:58,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687379664] [2024-06-28 03:04:58,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:04:58,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:04:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:04:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:04:59,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:04:59,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687379664] [2024-06-28 03:04:59,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687379664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:04:59,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:04:59,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:04:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484186202] [2024-06-28 03:04:59,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:04:59,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:04:59,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:04:59,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:04:59,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:04:59,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:04:59,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 389 transitions, 4909 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:04:59,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:04:59,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:04:59,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:00,511 INFO L124 PetriNetUnfolderBase]: 3242/5197 cut-off events. [2024-06-28 03:05:00,511 INFO L125 PetriNetUnfolderBase]: For 664275/664277 co-relation queries the response was YES. [2024-06-28 03:05:00,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49868 conditions, 5197 events. 3242/5197 cut-off events. For 664275/664277 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 30750 event pairs, 651 based on Foata normal form. 3/5190 useless extension candidates. Maximal degree in co-relation 49745. Up to 4641 conditions per place. [2024-06-28 03:05:00,570 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 333 selfloop transitions, 30 changer transitions 0/409 dead transitions. [2024-06-28 03:05:00,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 409 transitions, 5770 flow [2024-06-28 03:05:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:00,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:05:00,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436046511627907 [2024-06-28 03:05:00,572 INFO L175 Difference]: Start difference. First operand has 279 places, 389 transitions, 4909 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:05:00,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 409 transitions, 5770 flow [2024-06-28 03:05:01,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 409 transitions, 5620 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:01,421 INFO L231 Difference]: Finished difference. Result has 281 places, 392 transitions, 4911 flow [2024-06-28 03:05:01,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4911, PETRI_PLACES=281, PETRI_TRANSITIONS=392} [2024-06-28 03:05:01,421 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 237 predicate places. [2024-06-28 03:05:01,428 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 392 transitions, 4911 flow [2024-06-28 03:05:01,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:01,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:01,428 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 03:05:01,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:05:01,429 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 03:05:01,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash 789973635, now seen corresponding path program 3 times [2024-06-28 03:05:01,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:01,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572285118] [2024-06-28 03:05:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:01,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:02,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:02,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572285118] [2024-06-28 03:05:02,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572285118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:02,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:02,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:02,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086590584] [2024-06-28 03:05:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:02,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:02,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:02,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:02,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:05:02,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 392 transitions, 4911 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:02,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:02,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:05:02,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:03,569 INFO L124 PetriNetUnfolderBase]: 3247/5204 cut-off events. [2024-06-28 03:05:03,570 INFO L125 PetriNetUnfolderBase]: For 680307/680309 co-relation queries the response was YES. [2024-06-28 03:05:03,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50381 conditions, 5204 events. 3247/5204 cut-off events. For 680307/680309 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 30785 event pairs, 651 based on Foata normal form. 3/5197 useless extension candidates. Maximal degree in co-relation 50257. Up to 4639 conditions per place. [2024-06-28 03:05:03,632 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 328 selfloop transitions, 38 changer transitions 0/412 dead transitions. [2024-06-28 03:05:03,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 412 transitions, 5784 flow [2024-06-28 03:05:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:03,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:05:03,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-28 03:05:03,633 INFO L175 Difference]: Start difference. First operand has 281 places, 392 transitions, 4911 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:05:03,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 412 transitions, 5784 flow [2024-06-28 03:05:04,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 412 transitions, 5654 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:04,406 INFO L231 Difference]: Finished difference. Result has 283 places, 395 transitions, 4955 flow [2024-06-28 03:05:04,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4781, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4955, PETRI_PLACES=283, PETRI_TRANSITIONS=395} [2024-06-28 03:05:04,406 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 239 predicate places. [2024-06-28 03:05:04,407 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 395 transitions, 4955 flow [2024-06-28 03:05:04,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:04,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:04,407 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 03:05:04,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:05:04,407 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 03:05:04,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash 789974100, now seen corresponding path program 1 times [2024-06-28 03:05:04,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:04,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769451959] [2024-06-28 03:05:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:04,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:05,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:05,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769451959] [2024-06-28 03:05:05,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769451959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:05,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:05,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:05,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997731199] [2024-06-28 03:05:05,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:05,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:05,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:05,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:05,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:05,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:05:05,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 395 transitions, 4955 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:05,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:05,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:05:05,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:06,852 INFO L124 PetriNetUnfolderBase]: 3043/4973 cut-off events. [2024-06-28 03:05:06,852 INFO L125 PetriNetUnfolderBase]: For 687021/687023 co-relation queries the response was YES. [2024-06-28 03:05:06,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49599 conditions, 4973 events. 3043/4973 cut-off events. For 687021/687023 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 30051 event pairs, 616 based on Foata normal form. 3/4954 useless extension candidates. Maximal degree in co-relation 49474. Up to 4228 conditions per place. [2024-06-28 03:05:06,908 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 312 selfloop transitions, 26 changer transitions 0/418 dead transitions. [2024-06-28 03:05:06,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 418 transitions, 5806 flow [2024-06-28 03:05:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:05:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:05:06,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:05:06,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294 [2024-06-28 03:05:06,909 INFO L175 Difference]: Start difference. First operand has 283 places, 395 transitions, 4955 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:05:06,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 418 transitions, 5806 flow [2024-06-28 03:05:07,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 418 transitions, 5645 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:07,824 INFO L231 Difference]: Finished difference. Result has 288 places, 404 transitions, 5012 flow [2024-06-28 03:05:07,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4803, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5012, PETRI_PLACES=288, PETRI_TRANSITIONS=404} [2024-06-28 03:05:07,825 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 244 predicate places. [2024-06-28 03:05:07,825 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 404 transitions, 5012 flow [2024-06-28 03:05:07,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:07,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:07,825 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 03:05:07,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:05:07,826 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 03:05:07,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:07,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1024771612, now seen corresponding path program 3 times [2024-06-28 03:05:07,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:07,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989991331] [2024-06-28 03:05:07,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:07,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:08,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:08,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989991331] [2024-06-28 03:05:08,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989991331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:08,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:08,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:05:08,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341615853] [2024-06-28 03:05:08,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:08,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:05:08,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:08,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:05:08,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:05:08,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:05:08,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 404 transitions, 5012 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:08,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:08,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:05:08,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:09,938 INFO L124 PetriNetUnfolderBase]: 3235/5168 cut-off events. [2024-06-28 03:05:09,938 INFO L125 PetriNetUnfolderBase]: For 695611/695615 co-relation queries the response was YES. [2024-06-28 03:05:09,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51077 conditions, 5168 events. 3235/5168 cut-off events. For 695611/695615 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 30303 event pairs, 618 based on Foata normal form. 6/5131 useless extension candidates. Maximal degree in co-relation 50949. Up to 4644 conditions per place. [2024-06-28 03:05:09,994 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 347 selfloop transitions, 36 changer transitions 0/422 dead transitions. [2024-06-28 03:05:09,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 422 transitions, 5850 flow [2024-06-28 03:05:09,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:05:09,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:05:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:05:09,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-28 03:05:09,995 INFO L175 Difference]: Start difference. First operand has 288 places, 404 transitions, 5012 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:05:09,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 422 transitions, 5850 flow [2024-06-28 03:05:10,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 422 transitions, 5631 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:10,789 INFO L231 Difference]: Finished difference. Result has 288 places, 404 transitions, 4872 flow [2024-06-28 03:05:10,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4793, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4872, PETRI_PLACES=288, PETRI_TRANSITIONS=404} [2024-06-28 03:05:10,790 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 244 predicate places. [2024-06-28 03:05:10,790 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 404 transitions, 4872 flow [2024-06-28 03:05:10,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:10,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:10,790 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 03:05:10,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:05:10,791 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 03:05:10,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:10,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1025159422, now seen corresponding path program 4 times [2024-06-28 03:05:10,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:10,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520980845] [2024-06-28 03:05:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:10,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:11,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:11,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520980845] [2024-06-28 03:05:11,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520980845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:11,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:11,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103768249] [2024-06-28 03:05:11,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:11,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:11,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:11,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:11,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:11,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:05:11,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 404 transitions, 4872 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:11,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:11,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:05:11,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:12,745 INFO L124 PetriNetUnfolderBase]: 3232/5170 cut-off events. [2024-06-28 03:05:12,745 INFO L125 PetriNetUnfolderBase]: For 711666/711670 co-relation queries the response was YES. [2024-06-28 03:05:12,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51266 conditions, 5170 events. 3232/5170 cut-off events. For 711666/711670 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 30400 event pairs, 618 based on Foata normal form. 6/5133 useless extension candidates. Maximal degree in co-relation 51138. Up to 4619 conditions per place. [2024-06-28 03:05:12,801 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 338 selfloop transitions, 46 changer transitions 0/423 dead transitions. [2024-06-28 03:05:12,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 423 transitions, 5802 flow [2024-06-28 03:05:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:05:12,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-28 03:05:12,802 INFO L175 Difference]: Start difference. First operand has 288 places, 404 transitions, 4872 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:05:12,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 423 transitions, 5802 flow [2024-06-28 03:05:13,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 423 transitions, 5657 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:13,456 INFO L231 Difference]: Finished difference. Result has 288 places, 407 transitions, 4919 flow [2024-06-28 03:05:13,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4727, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4919, PETRI_PLACES=288, PETRI_TRANSITIONS=407} [2024-06-28 03:05:13,456 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 244 predicate places. [2024-06-28 03:05:13,457 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 407 transitions, 4919 flow [2024-06-28 03:05:13,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:13,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:13,457 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 03:05:13,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:05:13,457 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:13,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:13,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1070251590, now seen corresponding path program 11 times [2024-06-28 03:05:13,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:13,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624769932] [2024-06-28 03:05:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:13,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:14,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:14,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624769932] [2024-06-28 03:05:14,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624769932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:14,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:14,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:14,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424896357] [2024-06-28 03:05:14,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:14,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:14,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:14,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:14,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:14,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 407 transitions, 4919 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:14,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:14,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:14,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:15,986 INFO L124 PetriNetUnfolderBase]: 3497/5506 cut-off events. [2024-06-28 03:05:15,986 INFO L125 PetriNetUnfolderBase]: For 748033/748035 co-relation queries the response was YES. [2024-06-28 03:05:16,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54294 conditions, 5506 events. 3497/5506 cut-off events. For 748033/748035 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 31799 event pairs, 670 based on Foata normal form. 6/5511 useless extension candidates. Maximal degree in co-relation 54165. Up to 4643 conditions per place. [2024-06-28 03:05:16,049 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 299 selfloop transitions, 151 changer transitions 0/455 dead transitions. [2024-06-28 03:05:16,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 455 transitions, 6459 flow [2024-06-28 03:05:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 03:05:16,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-28 03:05:16,051 INFO L175 Difference]: Start difference. First operand has 288 places, 407 transitions, 4919 flow. Second operand 10 states and 197 transitions. [2024-06-28 03:05:16,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 455 transitions, 6459 flow [2024-06-28 03:05:16,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 455 transitions, 6293 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:16,774 INFO L231 Difference]: Finished difference. Result has 293 places, 417 transitions, 5380 flow [2024-06-28 03:05:16,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4753, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5380, PETRI_PLACES=293, PETRI_TRANSITIONS=417} [2024-06-28 03:05:16,775 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 249 predicate places. [2024-06-28 03:05:16,775 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 417 transitions, 5380 flow [2024-06-28 03:05:16,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:16,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:16,775 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 03:05:16,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:05:16,775 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:16,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1020927794, now seen corresponding path program 6 times [2024-06-28 03:05:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:16,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230706522] [2024-06-28 03:05:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:16,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:17,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:17,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230706522] [2024-06-28 03:05:17,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230706522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:17,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:17,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:17,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695144973] [2024-06-28 03:05:17,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:17,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:17,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:17,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:17,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:17,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:17,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 417 transitions, 5380 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:17,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:17,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:17,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:19,235 INFO L124 PetriNetUnfolderBase]: 3522/5540 cut-off events. [2024-06-28 03:05:19,235 INFO L125 PetriNetUnfolderBase]: For 792773/792775 co-relation queries the response was YES. [2024-06-28 03:05:19,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55197 conditions, 5540 events. 3522/5540 cut-off events. For 792773/792775 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 31954 event pairs, 660 based on Foata normal form. 20/5559 useless extension candidates. Maximal degree in co-relation 55066. Up to 4493 conditions per place. [2024-06-28 03:05:19,298 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 317 selfloop transitions, 135 changer transitions 0/457 dead transitions. [2024-06-28 03:05:19,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 457 transitions, 6554 flow [2024-06-28 03:05:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:19,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:19,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 03:05:19,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604651162790698 [2024-06-28 03:05:19,300 INFO L175 Difference]: Start difference. First operand has 293 places, 417 transitions, 5380 flow. Second operand 10 states and 198 transitions. [2024-06-28 03:05:19,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 457 transitions, 6554 flow [2024-06-28 03:05:20,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 457 transitions, 6399 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-28 03:05:20,234 INFO L231 Difference]: Finished difference. Result has 300 places, 418 transitions, 5588 flow [2024-06-28 03:05:20,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5237, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5588, PETRI_PLACES=300, PETRI_TRANSITIONS=418} [2024-06-28 03:05:20,235 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 256 predicate places. [2024-06-28 03:05:20,235 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 418 transitions, 5588 flow [2024-06-28 03:05:20,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:20,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:20,235 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 03:05:20,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:05:20,236 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:20,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1021112492, now seen corresponding path program 12 times [2024-06-28 03:05:20,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:20,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844679513] [2024-06-28 03:05:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:21,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:21,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844679513] [2024-06-28 03:05:21,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844679513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:21,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:21,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:21,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124362044] [2024-06-28 03:05:21,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:21,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:21,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:21,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:21,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:21,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 418 transitions, 5588 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:21,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:21,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:21,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:23,141 INFO L124 PetriNetUnfolderBase]: 3550/5592 cut-off events. [2024-06-28 03:05:23,142 INFO L125 PetriNetUnfolderBase]: For 774388/774390 co-relation queries the response was YES. [2024-06-28 03:05:23,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55665 conditions, 5592 events. 3550/5592 cut-off events. For 774388/774390 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 32448 event pairs, 686 based on Foata normal form. 6/5597 useless extension candidates. Maximal degree in co-relation 55532. Up to 4830 conditions per place. [2024-06-28 03:05:23,197 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 305 selfloop transitions, 146 changer transitions 0/456 dead transitions. [2024-06-28 03:05:23,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 456 transitions, 6749 flow [2024-06-28 03:05:23,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 03:05:23,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355179704016913 [2024-06-28 03:05:23,199 INFO L175 Difference]: Start difference. First operand has 300 places, 418 transitions, 5588 flow. Second operand 11 states and 206 transitions. [2024-06-28 03:05:23,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 456 transitions, 6749 flow [2024-06-28 03:05:24,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 456 transitions, 6420 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:24,108 INFO L231 Difference]: Finished difference. Result has 303 places, 423 transitions, 5711 flow [2024-06-28 03:05:24,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5265, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5711, PETRI_PLACES=303, PETRI_TRANSITIONS=423} [2024-06-28 03:05:24,109 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 259 predicate places. [2024-06-28 03:05:24,109 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 423 transitions, 5711 flow [2024-06-28 03:05:24,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:24,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:24,109 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 03:05:24,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:05:24,110 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:24,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:24,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1027368602, now seen corresponding path program 13 times [2024-06-28 03:05:24,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:24,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810600165] [2024-06-28 03:05:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:24,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:25,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:25,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810600165] [2024-06-28 03:05:25,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810600165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:25,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:25,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:25,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569457360] [2024-06-28 03:05:25,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:25,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:25,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:25,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:25,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:25,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:25,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 423 transitions, 5711 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:25,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:25,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:25,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:26,849 INFO L124 PetriNetUnfolderBase]: 3578/5635 cut-off events. [2024-06-28 03:05:26,850 INFO L125 PetriNetUnfolderBase]: For 784383/784385 co-relation queries the response was YES. [2024-06-28 03:05:26,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55953 conditions, 5635 events. 3578/5635 cut-off events. For 784383/784385 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 32724 event pairs, 702 based on Foata normal form. 6/5640 useless extension candidates. Maximal degree in co-relation 55819. Up to 4869 conditions per place. [2024-06-28 03:05:26,920 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 311 selfloop transitions, 144 changer transitions 0/460 dead transitions. [2024-06-28 03:05:26,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 460 transitions, 6874 flow [2024-06-28 03:05:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 03:05:26,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44883720930232557 [2024-06-28 03:05:26,922 INFO L175 Difference]: Start difference. First operand has 303 places, 423 transitions, 5711 flow. Second operand 10 states and 193 transitions. [2024-06-28 03:05:26,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 460 transitions, 6874 flow [2024-06-28 03:05:27,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 460 transitions, 6487 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:27,950 INFO L231 Difference]: Finished difference. Result has 305 places, 428 transitions, 5776 flow [2024-06-28 03:05:27,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5330, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5776, PETRI_PLACES=305, PETRI_TRANSITIONS=428} [2024-06-28 03:05:27,951 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 261 predicate places. [2024-06-28 03:05:27,951 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 428 transitions, 5776 flow [2024-06-28 03:05:27,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:27,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:27,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:27,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:05:27,951 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:27,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:27,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1027607612, now seen corresponding path program 14 times [2024-06-28 03:05:27,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:27,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712037216] [2024-06-28 03:05:27,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:27,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:28,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712037216] [2024-06-28 03:05:28,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712037216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:28,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:28,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:28,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78103427] [2024-06-28 03:05:28,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:28,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:28,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:28,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:28,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:29,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:29,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 428 transitions, 5776 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:29,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:29,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:29,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:30,478 INFO L124 PetriNetUnfolderBase]: 3595/5652 cut-off events. [2024-06-28 03:05:30,479 INFO L125 PetriNetUnfolderBase]: For 804458/804460 co-relation queries the response was YES. [2024-06-28 03:05:30,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56326 conditions, 5652 events. 3595/5652 cut-off events. For 804458/804460 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 32744 event pairs, 692 based on Foata normal form. 6/5657 useless extension candidates. Maximal degree in co-relation 56192. Up to 4837 conditions per place. [2024-06-28 03:05:30,539 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 309 selfloop transitions, 149 changer transitions 0/463 dead transitions. [2024-06-28 03:05:30,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 463 transitions, 6896 flow [2024-06-28 03:05:30,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 03:05:30,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511627906976744 [2024-06-28 03:05:30,541 INFO L175 Difference]: Start difference. First operand has 305 places, 428 transitions, 5776 flow. Second operand 10 states and 194 transitions. [2024-06-28 03:05:30,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 463 transitions, 6896 flow [2024-06-28 03:05:31,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 463 transitions, 6542 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:31,539 INFO L231 Difference]: Finished difference. Result has 309 places, 430 transitions, 5833 flow [2024-06-28 03:05:31,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5422, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5833, PETRI_PLACES=309, PETRI_TRANSITIONS=430} [2024-06-28 03:05:31,539 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 265 predicate places. [2024-06-28 03:05:31,539 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 430 transitions, 5833 flow [2024-06-28 03:05:31,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:31,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:31,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:05:31,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:05:31,540 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:31,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:31,540 INFO L85 PathProgramCache]: Analyzing trace with hash 389188830, now seen corresponding path program 15 times [2024-06-28 03:05:31,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:31,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470674409] [2024-06-28 03:05:31,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:31,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:32,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:32,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470674409] [2024-06-28 03:05:32,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470674409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:32,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:32,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:32,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066450014] [2024-06-28 03:05:32,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:32,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:32,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:32,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:32,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:32,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:32,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 430 transitions, 5833 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:32,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:32,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:32,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:34,243 INFO L124 PetriNetUnfolderBase]: 3612/5693 cut-off events. [2024-06-28 03:05:34,243 INFO L125 PetriNetUnfolderBase]: For 823031/823033 co-relation queries the response was YES. [2024-06-28 03:05:34,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56754 conditions, 5693 events. 3612/5693 cut-off events. For 823031/823033 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 33185 event pairs, 696 based on Foata normal form. 6/5698 useless extension candidates. Maximal degree in co-relation 56619. Up to 4876 conditions per place. [2024-06-28 03:05:34,307 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 307 selfloop transitions, 156 changer transitions 0/468 dead transitions. [2024-06-28 03:05:34,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 468 transitions, 7219 flow [2024-06-28 03:05:34,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:34,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:34,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 03:05:34,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-28 03:05:34,308 INFO L175 Difference]: Start difference. First operand has 309 places, 430 transitions, 5833 flow. Second operand 10 states and 195 transitions. [2024-06-28 03:05:34,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 468 transitions, 7219 flow [2024-06-28 03:05:35,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 468 transitions, 6826 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:35,504 INFO L231 Difference]: Finished difference. Result has 311 places, 432 transitions, 5827 flow [2024-06-28 03:05:35,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5440, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5827, PETRI_PLACES=311, PETRI_TRANSITIONS=432} [2024-06-28 03:05:35,504 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 267 predicate places. [2024-06-28 03:05:35,504 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 432 transitions, 5827 flow [2024-06-28 03:05:35,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:35,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:35,505 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 03:05:35,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:05:35,505 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:35,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:35,505 INFO L85 PathProgramCache]: Analyzing trace with hash 352081768, now seen corresponding path program 16 times [2024-06-28 03:05:35,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:35,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460036280] [2024-06-28 03:05:35,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:35,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:36,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:36,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460036280] [2024-06-28 03:05:36,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460036280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:36,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:36,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:36,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169516108] [2024-06-28 03:05:36,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:36,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:36,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:36,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:36,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:36,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:36,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 432 transitions, 5827 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:36,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:36,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:36,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:38,305 INFO L124 PetriNetUnfolderBase]: 3604/5681 cut-off events. [2024-06-28 03:05:38,305 INFO L125 PetriNetUnfolderBase]: For 827299/827301 co-relation queries the response was YES. [2024-06-28 03:05:38,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56403 conditions, 5681 events. 3604/5681 cut-off events. For 827299/827301 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 33074 event pairs, 688 based on Foata normal form. 6/5686 useless extension candidates. Maximal degree in co-relation 56267. Up to 4911 conditions per place. [2024-06-28 03:05:38,372 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 305 selfloop transitions, 156 changer transitions 0/466 dead transitions. [2024-06-28 03:05:38,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 466 transitions, 6865 flow [2024-06-28 03:05:38,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:05:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:05:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 03:05:38,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334038054968288 [2024-06-28 03:05:38,374 INFO L175 Difference]: Start difference. First operand has 311 places, 432 transitions, 5827 flow. Second operand 11 states and 205 transitions. [2024-06-28 03:05:38,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 466 transitions, 6865 flow [2024-06-28 03:05:39,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 466 transitions, 6432 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:39,467 INFO L231 Difference]: Finished difference. Result has 314 places, 432 transitions, 5713 flow [2024-06-28 03:05:39,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5394, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5713, PETRI_PLACES=314, PETRI_TRANSITIONS=432} [2024-06-28 03:05:39,468 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 270 predicate places. [2024-06-28 03:05:39,468 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 432 transitions, 5713 flow [2024-06-28 03:05:39,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:39,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:39,469 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 03:05:39,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:05:39,469 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:39,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:39,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1249013642, now seen corresponding path program 17 times [2024-06-28 03:05:39,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:39,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615863380] [2024-06-28 03:05:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:39,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:41,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:41,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:41,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615863380] [2024-06-28 03:05:41,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615863380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:41,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:41,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:41,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880853667] [2024-06-28 03:05:41,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:41,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:41,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:41,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:41,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:41,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:41,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 432 transitions, 5713 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:41,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:41,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:41,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:42,591 INFO L124 PetriNetUnfolderBase]: 3621/5696 cut-off events. [2024-06-28 03:05:42,592 INFO L125 PetriNetUnfolderBase]: For 845739/845741 co-relation queries the response was YES. [2024-06-28 03:05:42,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56668 conditions, 5696 events. 3621/5696 cut-off events. For 845739/845741 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 33042 event pairs, 692 based on Foata normal form. 6/5701 useless extension candidates. Maximal degree in co-relation 56531. Up to 4938 conditions per place. [2024-06-28 03:05:42,659 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 322 selfloop transitions, 141 changer transitions 0/468 dead transitions. [2024-06-28 03:05:42,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 468 transitions, 6855 flow [2024-06-28 03:05:42,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:42,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:42,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 03:05:42,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511627906976744 [2024-06-28 03:05:42,661 INFO L175 Difference]: Start difference. First operand has 314 places, 432 transitions, 5713 flow. Second operand 10 states and 194 transitions. [2024-06-28 03:05:42,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 468 transitions, 6855 flow [2024-06-28 03:05:43,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 468 transitions, 6533 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:05:43,959 INFO L231 Difference]: Finished difference. Result has 314 places, 434 transitions, 5790 flow [2024-06-28 03:05:43,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5391, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5790, PETRI_PLACES=314, PETRI_TRANSITIONS=434} [2024-06-28 03:05:43,960 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 270 predicate places. [2024-06-28 03:05:43,960 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 434 transitions, 5790 flow [2024-06-28 03:05:43,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:43,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:43,960 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 03:05:43,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:05:43,961 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:43,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2132373098, now seen corresponding path program 18 times [2024-06-28 03:05:43,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:43,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989888589] [2024-06-28 03:05:43,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:43,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:45,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:45,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989888589] [2024-06-28 03:05:45,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989888589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:45,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:45,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:45,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632661295] [2024-06-28 03:05:45,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:45,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:45,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:45,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:45,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:45,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:45,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 434 transitions, 5790 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:45,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:45,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:45,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:46,688 INFO L124 PetriNetUnfolderBase]: 3638/5733 cut-off events. [2024-06-28 03:05:46,688 INFO L125 PetriNetUnfolderBase]: For 869500/869502 co-relation queries the response was YES. [2024-06-28 03:05:46,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57311 conditions, 5733 events. 3638/5733 cut-off events. For 869500/869502 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 33400 event pairs, 702 based on Foata normal form. 6/5738 useless extension candidates. Maximal degree in co-relation 57173. Up to 4924 conditions per place. [2024-06-28 03:05:46,756 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 322 selfloop transitions, 144 changer transitions 0/471 dead transitions. [2024-06-28 03:05:46,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 471 transitions, 6944 flow [2024-06-28 03:05:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:05:46,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 03:05:46,758 INFO L175 Difference]: Start difference. First operand has 314 places, 434 transitions, 5790 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:05:46,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 471 transitions, 6944 flow [2024-06-28 03:05:47,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 471 transitions, 6494 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-28 03:05:47,923 INFO L231 Difference]: Finished difference. Result has 317 places, 436 transitions, 5749 flow [2024-06-28 03:05:47,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5340, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5749, PETRI_PLACES=317, PETRI_TRANSITIONS=436} [2024-06-28 03:05:47,924 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 273 predicate places. [2024-06-28 03:05:47,924 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 436 transitions, 5749 flow [2024-06-28 03:05:47,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:47,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:47,924 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 03:05:47,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:05:47,924 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:47,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:47,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2124041228, now seen corresponding path program 19 times [2024-06-28 03:05:47,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:47,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294052877] [2024-06-28 03:05:47,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:47,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:49,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:49,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294052877] [2024-06-28 03:05:49,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294052877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:49,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:49,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:49,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123498406] [2024-06-28 03:05:49,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:49,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:49,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:49,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:49,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:49,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:49,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 436 transitions, 5749 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:49,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:49,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:49,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:50,496 INFO L124 PetriNetUnfolderBase]: 3655/5750 cut-off events. [2024-06-28 03:05:50,496 INFO L125 PetriNetUnfolderBase]: For 889669/889671 co-relation queries the response was YES. [2024-06-28 03:05:50,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57712 conditions, 5750 events. 3655/5750 cut-off events. For 889669/889671 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 33436 event pairs, 692 based on Foata normal form. 6/5755 useless extension candidates. Maximal degree in co-relation 57573. Up to 4807 conditions per place. [2024-06-28 03:05:50,565 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 315 selfloop transitions, 154 changer transitions 0/474 dead transitions. [2024-06-28 03:05:50,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 474 transitions, 6915 flow [2024-06-28 03:05:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:50,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:05:50,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 03:05:50,567 INFO L175 Difference]: Start difference. First operand has 317 places, 436 transitions, 5749 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:05:50,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 474 transitions, 6915 flow [2024-06-28 03:05:51,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 474 transitions, 6524 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:51,902 INFO L231 Difference]: Finished difference. Result has 319 places, 438 transitions, 5791 flow [2024-06-28 03:05:51,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5358, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5791, PETRI_PLACES=319, PETRI_TRANSITIONS=438} [2024-06-28 03:05:51,903 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 275 predicate places. [2024-06-28 03:05:51,903 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 438 transitions, 5791 flow [2024-06-28 03:05:51,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:51,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:51,903 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 03:05:51,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:05:51,904 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:05:51,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:51,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1543932974, now seen corresponding path program 20 times [2024-06-28 03:05:51,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:51,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478797916] [2024-06-28 03:05:51,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:51,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:53,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:53,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478797916] [2024-06-28 03:05:53,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478797916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:53,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:53,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:05:53,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430813063] [2024-06-28 03:05:53,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:53,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:05:53,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:53,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:05:53,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:05:53,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:05:53,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 438 transitions, 5791 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:53,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:53,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:05:53,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:54,531 INFO L124 PetriNetUnfolderBase]: 3672/5789 cut-off events. [2024-06-28 03:05:54,531 INFO L125 PetriNetUnfolderBase]: For 910820/910822 co-relation queries the response was YES. [2024-06-28 03:05:54,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58261 conditions, 5789 events. 3672/5789 cut-off events. For 910820/910822 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 33864 event pairs, 606 based on Foata normal form. 6/5794 useless extension candidates. Maximal degree in co-relation 58121. Up to 4013 conditions per place. [2024-06-28 03:05:54,600 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 246 selfloop transitions, 229 changer transitions 0/480 dead transitions. [2024-06-28 03:05:54,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 480 transitions, 7391 flow [2024-06-28 03:05:54,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:05:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:05:54,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:05:54,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-28 03:05:54,601 INFO L175 Difference]: Start difference. First operand has 319 places, 438 transitions, 5791 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:05:54,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 480 transitions, 7391 flow [2024-06-28 03:05:55,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 480 transitions, 6976 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 03:05:55,903 INFO L231 Difference]: Finished difference. Result has 321 places, 442 transitions, 6081 flow [2024-06-28 03:05:55,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5376, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6081, PETRI_PLACES=321, PETRI_TRANSITIONS=442} [2024-06-28 03:05:55,903 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 277 predicate places. [2024-06-28 03:05:55,903 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 442 transitions, 6081 flow [2024-06-28 03:05:55,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:55,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:55,904 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 03:05:55,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:05:55,904 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 03:05:55,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:55,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1181994622, now seen corresponding path program 5 times [2024-06-28 03:05:55,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:55,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825805720] [2024-06-28 03:05:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:55,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:05:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:05:56,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:05:56,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825805720] [2024-06-28 03:05:56,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825805720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:05:56,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:05:56,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:05:56,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130363394] [2024-06-28 03:05:56,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:05:56,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:05:56,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:05:56,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:05:56,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:05:56,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:05:56,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 442 transitions, 6081 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:56,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:05:56,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:05:56,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:05:57,960 INFO L124 PetriNetUnfolderBase]: 3407/5484 cut-off events. [2024-06-28 03:05:57,961 INFO L125 PetriNetUnfolderBase]: For 928886/928892 co-relation queries the response was YES. [2024-06-28 03:05:58,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57583 conditions, 5484 events. 3407/5484 cut-off events. For 928886/928892 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32976 event pairs, 643 based on Foata normal form. 8/5428 useless extension candidates. Maximal degree in co-relation 57442. Up to 4878 conditions per place. [2024-06-28 03:05:58,029 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 359 selfloop transitions, 64 changer transitions 0/462 dead transitions. [2024-06-28 03:05:58,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 462 transitions, 7363 flow [2024-06-28 03:05:58,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:05:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:05:58,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:05:58,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-28 03:05:58,030 INFO L175 Difference]: Start difference. First operand has 321 places, 442 transitions, 6081 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:05:58,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 462 transitions, 7363 flow [2024-06-28 03:05:59,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 462 transitions, 7043 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-28 03:05:59,591 INFO L231 Difference]: Finished difference. Result has 323 places, 448 transitions, 6089 flow [2024-06-28 03:05:59,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5761, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6089, PETRI_PLACES=323, PETRI_TRANSITIONS=448} [2024-06-28 03:05:59,591 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 279 predicate places. [2024-06-28 03:05:59,591 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 448 transitions, 6089 flow [2024-06-28 03:05:59,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:05:59,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:05:59,592 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 03:05:59,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:05:59,592 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 03:05:59,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:05:59,592 INFO L85 PathProgramCache]: Analyzing trace with hash 717577556, now seen corresponding path program 6 times [2024-06-28 03:05:59,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:05:59,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488174750] [2024-06-28 03:05:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:05:59,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:05:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:00,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:00,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488174750] [2024-06-28 03:06:00,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488174750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:00,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:00,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:06:00,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179220380] [2024-06-28 03:06:00,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:00,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:06:00,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:00,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:06:00,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:06:00,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:06:00,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 448 transitions, 6089 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:00,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:00,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:06:00,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:01,526 INFO L124 PetriNetUnfolderBase]: 3401/5476 cut-off events. [2024-06-28 03:06:01,526 INFO L125 PetriNetUnfolderBase]: For 929738/929744 co-relation queries the response was YES. [2024-06-28 03:06:01,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57107 conditions, 5476 events. 3401/5476 cut-off events. For 929738/929744 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32887 event pairs, 640 based on Foata normal form. 8/5420 useless extension candidates. Maximal degree in co-relation 56964. Up to 4873 conditions per place. [2024-06-28 03:06:01,591 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 361 selfloop transitions, 61 changer transitions 0/461 dead transitions. [2024-06-28 03:06:01,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 461 transitions, 6999 flow [2024-06-28 03:06:01,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:06:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:06:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:06:01,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485049833887043 [2024-06-28 03:06:01,592 INFO L175 Difference]: Start difference. First operand has 323 places, 448 transitions, 6089 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:06:01,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 461 transitions, 6999 flow [2024-06-28 03:06:02,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 461 transitions, 6769 flow, removed 82 selfloop flow, removed 4 redundant places. [2024-06-28 03:06:02,744 INFO L231 Difference]: Finished difference. Result has 326 places, 448 transitions, 5987 flow [2024-06-28 03:06:02,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5859, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5987, PETRI_PLACES=326, PETRI_TRANSITIONS=448} [2024-06-28 03:06:02,745 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 282 predicate places. [2024-06-28 03:06:02,745 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 448 transitions, 5987 flow [2024-06-28 03:06:02,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:02,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:02,745 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 03:06:02,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:06:02,745 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 03:06:02,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:02,746 INFO L85 PathProgramCache]: Analyzing trace with hash 717585492, now seen corresponding path program 2 times [2024-06-28 03:06:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:02,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916758109] [2024-06-28 03:06:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:02,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:03,887 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 03:06:03,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:03,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916758109] [2024-06-28 03:06:03,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916758109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:03,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:03,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:03,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857724457] [2024-06-28 03:06:03,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:03,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:03,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:03,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:03,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:03,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:06:03,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 448 transitions, 5987 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:03,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:03,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:06:03,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:05,115 INFO L124 PetriNetUnfolderBase]: 3187/5267 cut-off events. [2024-06-28 03:06:05,115 INFO L125 PetriNetUnfolderBase]: For 942734/942738 co-relation queries the response was YES. [2024-06-28 03:06:05,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55305 conditions, 5267 events. 3187/5267 cut-off events. For 942734/942738 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 32823 event pairs, 639 based on Foata normal form. 5/5244 useless extension candidates. Maximal degree in co-relation 55160. Up to 4409 conditions per place. [2024-06-28 03:06:05,183 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 335 selfloop transitions, 32 changer transitions 0/462 dead transitions. [2024-06-28 03:06:05,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 462 transitions, 6843 flow [2024-06-28 03:06:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:06:05,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-28 03:06:05,187 INFO L175 Difference]: Start difference. First operand has 326 places, 448 transitions, 5987 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:06:05,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 462 transitions, 6843 flow [2024-06-28 03:06:06,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 462 transitions, 6671 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:06:06,659 INFO L231 Difference]: Finished difference. Result has 327 places, 451 transitions, 5981 flow [2024-06-28 03:06:06,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5815, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5981, PETRI_PLACES=327, PETRI_TRANSITIONS=451} [2024-06-28 03:06:06,660 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 283 predicate places. [2024-06-28 03:06:06,660 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 451 transitions, 5981 flow [2024-06-28 03:06:06,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:06,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:06,660 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 03:06:06,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:06:06,661 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 03:06:06,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:06,661 INFO L85 PathProgramCache]: Analyzing trace with hash -236090444, now seen corresponding path program 3 times [2024-06-28 03:06:06,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:06,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345826150] [2024-06-28 03:06:06,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:06,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:07,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:07,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345826150] [2024-06-28 03:06:07,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345826150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:07,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:07,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:07,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739800884] [2024-06-28 03:06:07,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:07,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:07,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:07,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:07,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:07,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:06:07,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 451 transitions, 5981 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:07,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:07,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:06:07,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:09,088 INFO L124 PetriNetUnfolderBase]: 3173/5237 cut-off events. [2024-06-28 03:06:09,088 INFO L125 PetriNetUnfolderBase]: For 972047/972055 co-relation queries the response was YES. [2024-06-28 03:06:09,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55494 conditions, 5237 events. 3173/5237 cut-off events. For 972047/972055 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 32600 event pairs, 758 based on Foata normal form. 10/5215 useless extension candidates. Maximal degree in co-relation 55349. Up to 4441 conditions per place. [2024-06-28 03:06:09,158 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 350 selfloop transitions, 20 changer transitions 0/465 dead transitions. [2024-06-28 03:06:09,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 465 transitions, 6847 flow [2024-06-28 03:06:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:09,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:06:09,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-28 03:06:09,159 INFO L175 Difference]: Start difference. First operand has 327 places, 451 transitions, 5981 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:06:09,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 465 transitions, 6847 flow [2024-06-28 03:06:10,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 465 transitions, 6703 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:10,603 INFO L231 Difference]: Finished difference. Result has 329 places, 454 transitions, 5978 flow [2024-06-28 03:06:10,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5837, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5978, PETRI_PLACES=329, PETRI_TRANSITIONS=454} [2024-06-28 03:06:10,603 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 285 predicate places. [2024-06-28 03:06:10,603 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 454 transitions, 5978 flow [2024-06-28 03:06:10,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:10,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:10,604 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 03:06:10,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:06:10,604 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 03:06:10,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:10,604 INFO L85 PathProgramCache]: Analyzing trace with hash 732317157, now seen corresponding path program 4 times [2024-06-28 03:06:10,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:10,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775242356] [2024-06-28 03:06:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:10,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:11,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:11,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775242356] [2024-06-28 03:06:11,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775242356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:11,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:11,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:11,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171443887] [2024-06-28 03:06:11,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:11,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:11,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:11,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:11,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:11,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:06:11,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 454 transitions, 5978 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:11,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:11,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:06:11,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:12,793 INFO L124 PetriNetUnfolderBase]: 3526/5651 cut-off events. [2024-06-28 03:06:12,793 INFO L125 PetriNetUnfolderBase]: For 982876/982880 co-relation queries the response was YES. [2024-06-28 03:06:12,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58074 conditions, 5651 events. 3526/5651 cut-off events. For 982876/982880 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 33896 event pairs, 705 based on Foata normal form. 5/5646 useless extension candidates. Maximal degree in co-relation 57928. Up to 4931 conditions per place. [2024-06-28 03:06:12,865 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 352 selfloop transitions, 60 changer transitions 0/473 dead transitions. [2024-06-28 03:06:12,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 473 transitions, 7228 flow [2024-06-28 03:06:12,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:12,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:06:12,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-28 03:06:12,866 INFO L175 Difference]: Start difference. First operand has 329 places, 454 transitions, 5978 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:06:12,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 473 transitions, 7228 flow [2024-06-28 03:06:14,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 473 transitions, 7121 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:14,610 INFO L231 Difference]: Finished difference. Result has 331 places, 460 transitions, 6199 flow [2024-06-28 03:06:14,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5871, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6199, PETRI_PLACES=331, PETRI_TRANSITIONS=460} [2024-06-28 03:06:14,611 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 287 predicate places. [2024-06-28 03:06:14,611 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 460 transitions, 6199 flow [2024-06-28 03:06:14,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:14,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:14,611 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 03:06:14,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:06:14,612 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 03:06:14,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash 717571604, now seen corresponding path program 4 times [2024-06-28 03:06:14,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:14,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556263547] [2024-06-28 03:06:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:14,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:15,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:15,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556263547] [2024-06-28 03:06:15,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556263547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:15,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:15,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:06:15,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256574276] [2024-06-28 03:06:15,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:15,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:06:15,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:06:15,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:06:15,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:06:15,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 460 transitions, 6199 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:15,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:15,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:06:15,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:16,899 INFO L124 PetriNetUnfolderBase]: 3515/5637 cut-off events. [2024-06-28 03:06:16,900 INFO L125 PetriNetUnfolderBase]: For 998360/998361 co-relation queries the response was YES. [2024-06-28 03:06:16,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58174 conditions, 5637 events. 3515/5637 cut-off events. For 998360/998361 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 33798 event pairs, 710 based on Foata normal form. 3/5627 useless extension candidates. Maximal degree in co-relation 58027. Up to 4915 conditions per place. [2024-06-28 03:06:16,973 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 361 selfloop transitions, 55 changer transitions 0/477 dead transitions. [2024-06-28 03:06:16,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 477 transitions, 7186 flow [2024-06-28 03:06:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:06:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:06:16,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:06:16,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118863049095606 [2024-06-28 03:06:16,974 INFO L175 Difference]: Start difference. First operand has 331 places, 460 transitions, 6199 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:06:16,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 477 transitions, 7186 flow [2024-06-28 03:06:18,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 477 transitions, 7043 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-28 03:06:18,828 INFO L231 Difference]: Finished difference. Result has 337 places, 465 transitions, 6298 flow [2024-06-28 03:06:18,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6057, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6298, PETRI_PLACES=337, PETRI_TRANSITIONS=465} [2024-06-28 03:06:18,828 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 293 predicate places. [2024-06-28 03:06:18,829 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 465 transitions, 6298 flow [2024-06-28 03:06:18,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:18,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:18,829 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 03:06:18,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:06:18,829 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 03:06:18,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:18,830 INFO L85 PathProgramCache]: Analyzing trace with hash -307329292, now seen corresponding path program 4 times [2024-06-28 03:06:18,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:18,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82695645] [2024-06-28 03:06:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:18,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:19,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:19,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82695645] [2024-06-28 03:06:19,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82695645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:19,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:19,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:19,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887157974] [2024-06-28 03:06:19,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:19,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:19,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:19,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:20,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:06:20,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 465 transitions, 6298 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:20,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:20,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:06:20,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:21,081 INFO L124 PetriNetUnfolderBase]: 3197/5273 cut-off events. [2024-06-28 03:06:21,081 INFO L125 PetriNetUnfolderBase]: For 1010977/1010981 co-relation queries the response was YES. [2024-06-28 03:06:21,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56952 conditions, 5273 events. 3197/5273 cut-off events. For 1010977/1010981 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 32684 event pairs, 628 based on Foata normal form. 5/5250 useless extension candidates. Maximal degree in co-relation 56802. Up to 4396 conditions per place. [2024-06-28 03:06:21,154 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 335 selfloop transitions, 54 changer transitions 0/486 dead transitions. [2024-06-28 03:06:21,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 486 transitions, 7540 flow [2024-06-28 03:06:21,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 03:06:21,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-28 03:06:21,157 INFO L175 Difference]: Start difference. First operand has 337 places, 465 transitions, 6298 flow. Second operand 8 states and 155 transitions. [2024-06-28 03:06:21,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 486 transitions, 7540 flow [2024-06-28 03:06:23,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 486 transitions, 7367 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:23,218 INFO L231 Difference]: Finished difference. Result has 341 places, 474 transitions, 6495 flow [2024-06-28 03:06:23,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6125, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6495, PETRI_PLACES=341, PETRI_TRANSITIONS=474} [2024-06-28 03:06:23,218 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 297 predicate places. [2024-06-28 03:06:23,218 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 474 transitions, 6495 flow [2024-06-28 03:06:23,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:23,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:23,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:23,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:06:23,219 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 03:06:23,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:23,219 INFO L85 PathProgramCache]: Analyzing trace with hash -322061887, now seen corresponding path program 5 times [2024-06-28 03:06:23,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:23,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667786880] [2024-06-28 03:06:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:23,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:24,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:24,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667786880] [2024-06-28 03:06:24,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667786880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:24,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:24,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:24,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924447185] [2024-06-28 03:06:24,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:24,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:24,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:24,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:24,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:06:24,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 474 transitions, 6495 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:24,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:24,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:06:24,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:25,454 INFO L124 PetriNetUnfolderBase]: 3530/5657 cut-off events. [2024-06-28 03:06:25,455 INFO L125 PetriNetUnfolderBase]: For 1036720/1036724 co-relation queries the response was YES. [2024-06-28 03:06:25,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59336 conditions, 5657 events. 3530/5657 cut-off events. For 1036720/1036724 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 33891 event pairs, 704 based on Foata normal form. 5/5652 useless extension candidates. Maximal degree in co-relation 59183. Up to 4963 conditions per place. [2024-06-28 03:06:25,528 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 386 selfloop transitions, 43 changer transitions 0/490 dead transitions. [2024-06-28 03:06:25,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 490 transitions, 7692 flow [2024-06-28 03:06:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:06:25,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-28 03:06:25,530 INFO L175 Difference]: Start difference. First operand has 341 places, 474 transitions, 6495 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:06:25,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 490 transitions, 7692 flow [2024-06-28 03:06:27,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 490 transitions, 7538 flow, removed 62 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:27,253 INFO L231 Difference]: Finished difference. Result has 346 places, 477 transitions, 6533 flow [2024-06-28 03:06:27,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6341, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6533, PETRI_PLACES=346, PETRI_TRANSITIONS=477} [2024-06-28 03:06:27,253 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 302 predicate places. [2024-06-28 03:06:27,253 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 477 transitions, 6533 flow [2024-06-28 03:06:27,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:27,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:27,254 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 03:06:27,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:06:27,254 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 03:06:27,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:27,254 INFO L85 PathProgramCache]: Analyzing trace with hash -322074907, now seen corresponding path program 6 times [2024-06-28 03:06:27,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:27,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688883871] [2024-06-28 03:06:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:27,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:28,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:28,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688883871] [2024-06-28 03:06:28,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688883871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:28,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:28,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:06:28,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088586836] [2024-06-28 03:06:28,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:28,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:06:28,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:28,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:06:28,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:06:28,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:06:28,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 477 transitions, 6533 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:28,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:28,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:06:28,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:29,521 INFO L124 PetriNetUnfolderBase]: 3527/5653 cut-off events. [2024-06-28 03:06:29,521 INFO L125 PetriNetUnfolderBase]: For 1050608/1050612 co-relation queries the response was YES. [2024-06-28 03:06:29,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59372 conditions, 5653 events. 3527/5653 cut-off events. For 1050608/1050612 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 33856 event pairs, 704 based on Foata normal form. 5/5648 useless extension candidates. Maximal degree in co-relation 59217. Up to 4966 conditions per place. [2024-06-28 03:06:29,595 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 390 selfloop transitions, 38 changer transitions 0/489 dead transitions. [2024-06-28 03:06:29,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 489 transitions, 7432 flow [2024-06-28 03:06:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:29,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 03:06:29,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42441860465116277 [2024-06-28 03:06:29,596 INFO L175 Difference]: Start difference. First operand has 346 places, 477 transitions, 6533 flow. Second operand 8 states and 146 transitions. [2024-06-28 03:06:29,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 489 transitions, 7432 flow [2024-06-28 03:06:31,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 489 transitions, 7147 flow, removed 90 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:31,395 INFO L231 Difference]: Finished difference. Result has 348 places, 477 transitions, 6330 flow [2024-06-28 03:06:31,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6248, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6330, PETRI_PLACES=348, PETRI_TRANSITIONS=477} [2024-06-28 03:06:31,395 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 304 predicate places. [2024-06-28 03:06:31,396 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 477 transitions, 6330 flow [2024-06-28 03:06:31,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:31,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:31,396 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 03:06:31,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:06:31,396 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:31,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:31,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1183008394, now seen corresponding path program 21 times [2024-06-28 03:06:31,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:31,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973209001] [2024-06-28 03:06:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:31,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:32,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:32,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973209001] [2024-06-28 03:06:32,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973209001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:32,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:32,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:32,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180455809] [2024-06-28 03:06:32,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:32,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:32,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:32,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:32,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:32,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:06:32,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 477 transitions, 6330 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:32,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:32,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:06:32,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:34,332 INFO L124 PetriNetUnfolderBase]: 4246/6687 cut-off events. [2024-06-28 03:06:34,333 INFO L125 PetriNetUnfolderBase]: For 1080800/1080804 co-relation queries the response was YES. [2024-06-28 03:06:34,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68000 conditions, 6687 events. 4246/6687 cut-off events. For 1080800/1080804 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 40330 event pairs, 741 based on Foata normal form. 8/6693 useless extension candidates. Maximal degree in co-relation 67844. Up to 5535 conditions per place. [2024-06-28 03:06:34,421 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 386 selfloop transitions, 328 changer transitions 0/719 dead transitions. [2024-06-28 03:06:34,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 719 transitions, 11301 flow [2024-06-28 03:06:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:34,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 03:06:34,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-28 03:06:34,424 INFO L175 Difference]: Start difference. First operand has 348 places, 477 transitions, 6330 flow. Second operand 11 states and 219 transitions. [2024-06-28 03:06:34,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 719 transitions, 11301 flow [2024-06-28 03:06:37,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 719 transitions, 11173 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:06:37,332 INFO L231 Difference]: Finished difference. Result has 355 places, 659 transitions, 10368 flow [2024-06-28 03:06:37,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6214, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10368, PETRI_PLACES=355, PETRI_TRANSITIONS=659} [2024-06-28 03:06:37,332 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 311 predicate places. [2024-06-28 03:06:37,332 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 659 transitions, 10368 flow [2024-06-28 03:06:37,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:37,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:37,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:37,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:06:37,333 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:37,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:37,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1555224122, now seen corresponding path program 22 times [2024-06-28 03:06:37,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:37,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255408755] [2024-06-28 03:06:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:37,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:38,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:38,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255408755] [2024-06-28 03:06:38,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255408755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:38,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:38,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:38,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989109235] [2024-06-28 03:06:38,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:38,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:38,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:38,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:38,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:38,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:06:38,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 659 transitions, 10368 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:38,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:38,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:06:38,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:40,385 INFO L124 PetriNetUnfolderBase]: 4369/6883 cut-off events. [2024-06-28 03:06:40,386 INFO L125 PetriNetUnfolderBase]: For 1110673/1110679 co-relation queries the response was YES. [2024-06-28 03:06:40,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72060 conditions, 6883 events. 4369/6883 cut-off events. For 1110673/1110679 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 41720 event pairs, 748 based on Foata normal form. 10/6891 useless extension candidates. Maximal degree in co-relation 71900. Up to 5664 conditions per place. [2024-06-28 03:06:40,465 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 368 selfloop transitions, 379 changer transitions 0/752 dead transitions. [2024-06-28 03:06:40,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 752 transitions, 12926 flow [2024-06-28 03:06:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:40,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 03:06:40,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-28 03:06:40,467 INFO L175 Difference]: Start difference. First operand has 355 places, 659 transitions, 10368 flow. Second operand 11 states and 219 transitions. [2024-06-28 03:06:40,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 752 transitions, 12926 flow [2024-06-28 03:06:42,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 752 transitions, 12437 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:42,846 INFO L231 Difference]: Finished difference. Result has 364 places, 704 transitions, 11789 flow [2024-06-28 03:06:42,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9969, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11789, PETRI_PLACES=364, PETRI_TRANSITIONS=704} [2024-06-28 03:06:42,847 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 320 predicate places. [2024-06-28 03:06:42,847 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 704 transitions, 11789 flow [2024-06-28 03:06:42,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:42,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:42,847 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 03:06:42,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:06:42,848 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:42,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash 611410792, now seen corresponding path program 23 times [2024-06-28 03:06:42,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:42,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995038158] [2024-06-28 03:06:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:42,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:43,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:43,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995038158] [2024-06-28 03:06:43,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995038158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:43,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:43,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:43,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645688423] [2024-06-28 03:06:43,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:43,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:43,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:06:43,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 704 transitions, 11789 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:43,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:43,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:06:43,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:45,905 INFO L124 PetriNetUnfolderBase]: 4467/7038 cut-off events. [2024-06-28 03:06:45,905 INFO L125 PetriNetUnfolderBase]: For 1137353/1137355 co-relation queries the response was YES. [2024-06-28 03:06:45,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74821 conditions, 7038 events. 4467/7038 cut-off events. For 1137353/1137355 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 42970 event pairs, 774 based on Foata normal form. 6/7042 useless extension candidates. Maximal degree in co-relation 74658. Up to 5771 conditions per place. [2024-06-28 03:06:46,000 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 411 selfloop transitions, 375 changer transitions 0/791 dead transitions. [2024-06-28 03:06:46,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 791 transitions, 14434 flow [2024-06-28 03:06:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 03:06:46,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-28 03:06:46,001 INFO L175 Difference]: Start difference. First operand has 364 places, 704 transitions, 11789 flow. Second operand 11 states and 219 transitions. [2024-06-28 03:06:46,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 791 transitions, 14434 flow [2024-06-28 03:06:48,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 791 transitions, 13872 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:48,457 INFO L231 Difference]: Finished difference. Result has 373 places, 738 transitions, 12985 flow [2024-06-28 03:06:48,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11265, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12985, PETRI_PLACES=373, PETRI_TRANSITIONS=738} [2024-06-28 03:06:48,458 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 329 predicate places. [2024-06-28 03:06:48,458 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 738 transitions, 12985 flow [2024-06-28 03:06:48,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:48,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:48,458 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 03:06:48,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:06:48,459 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:48,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:48,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1118766134, now seen corresponding path program 24 times [2024-06-28 03:06:48,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:48,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447128694] [2024-06-28 03:06:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:48,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:49,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:49,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447128694] [2024-06-28 03:06:49,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447128694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:49,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:49,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:49,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147993718] [2024-06-28 03:06:49,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:49,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:49,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:49,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:49,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:49,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:06:49,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 738 transitions, 12985 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:49,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:49,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:06:49,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:51,527 INFO L124 PetriNetUnfolderBase]: 4776/7527 cut-off events. [2024-06-28 03:06:51,527 INFO L125 PetriNetUnfolderBase]: For 1169981/1169987 co-relation queries the response was YES. [2024-06-28 03:06:51,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80633 conditions, 7527 events. 4776/7527 cut-off events. For 1169981/1169987 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 46469 event pairs, 817 based on Foata normal form. 10/7535 useless extension candidates. Maximal degree in co-relation 80466. Up to 6038 conditions per place. [2024-06-28 03:06:51,644 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 427 selfloop transitions, 475 changer transitions 0/907 dead transitions. [2024-06-28 03:06:51,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 907 transitions, 17751 flow [2024-06-28 03:06:51,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 03:06:51,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-28 03:06:51,645 INFO L175 Difference]: Start difference. First operand has 373 places, 738 transitions, 12985 flow. Second operand 11 states and 219 transitions. [2024-06-28 03:06:51,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 907 transitions, 17751 flow [2024-06-28 03:06:54,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 907 transitions, 17034 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:54,659 INFO L231 Difference]: Finished difference. Result has 383 places, 851 transitions, 16150 flow [2024-06-28 03:06:54,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12417, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16150, PETRI_PLACES=383, PETRI_TRANSITIONS=851} [2024-06-28 03:06:54,660 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 339 predicate places. [2024-06-28 03:06:54,660 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 851 transitions, 16150 flow [2024-06-28 03:06:54,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:54,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:54,660 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 03:06:54,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:06:54,660 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:06:54,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:54,661 INFO L85 PathProgramCache]: Analyzing trace with hash -953127000, now seen corresponding path program 25 times [2024-06-28 03:06:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:54,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177274003] [2024-06-28 03:06:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:54,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:55,664 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 03:06:55,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:55,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177274003] [2024-06-28 03:06:55,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177274003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:55,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:55,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:06:55,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898491972] [2024-06-28 03:06:55,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:55,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:06:55,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:55,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:06:55,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:06:55,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:06:55,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 851 transitions, 16150 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:55,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:55,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:06:55,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:58,178 INFO L124 PetriNetUnfolderBase]: 4790/7549 cut-off events. [2024-06-28 03:06:58,178 INFO L125 PetriNetUnfolderBase]: For 1180271/1180277 co-relation queries the response was YES. [2024-06-28 03:06:58,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81583 conditions, 7549 events. 4790/7549 cut-off events. For 1180271/1180277 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 46596 event pairs, 823 based on Foata normal form. 10/7557 useless extension candidates. Maximal degree in co-relation 81411. Up to 6067 conditions per place. [2024-06-28 03:06:58,276 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 448 selfloop transitions, 459 changer transitions 0/912 dead transitions. [2024-06-28 03:06:58,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 912 transitions, 18445 flow [2024-06-28 03:06:58,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:06:58,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:06:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-28 03:06:58,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-28 03:06:58,278 INFO L175 Difference]: Start difference. First operand has 383 places, 851 transitions, 16150 flow. Second operand 11 states and 220 transitions. [2024-06-28 03:06:58,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 912 transitions, 18445 flow [2024-06-28 03:07:00,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 912 transitions, 17849 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-28 03:07:00,758 INFO L231 Difference]: Finished difference. Result has 392 places, 859 transitions, 16767 flow [2024-06-28 03:07:00,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15554, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=851, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16767, PETRI_PLACES=392, PETRI_TRANSITIONS=859} [2024-06-28 03:07:00,759 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 348 predicate places. [2024-06-28 03:07:00,759 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 859 transitions, 16767 flow [2024-06-28 03:07:00,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:00,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:00,760 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 03:07:00,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:07:00,760 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:07:00,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1763475206, now seen corresponding path program 26 times [2024-06-28 03:07:00,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:00,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650567017] [2024-06-28 03:07:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:00,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:01,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:01,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650567017] [2024-06-28 03:07:01,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650567017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:01,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:01,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:07:01,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503574638] [2024-06-28 03:07:01,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:01,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:07:01,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:01,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:07:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:07:01,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:07:01,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 859 transitions, 16767 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:01,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:01,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:07:01,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:03,985 INFO L124 PetriNetUnfolderBase]: 4963/7822 cut-off events. [2024-06-28 03:07:03,985 INFO L125 PetriNetUnfolderBase]: For 1191243/1191247 co-relation queries the response was YES. [2024-06-28 03:07:04,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83545 conditions, 7822 events. 4963/7822 cut-off events. For 1191243/1191247 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 48580 event pairs, 777 based on Foata normal form. 8/7828 useless extension candidates. Maximal degree in co-relation 83370. Up to 5687 conditions per place. [2024-06-28 03:07:04,096 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 402 selfloop transitions, 552 changer transitions 0/959 dead transitions. [2024-06-28 03:07:04,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 959 transitions, 19785 flow [2024-06-28 03:07:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:07:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:07:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 03:07:04,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-28 03:07:04,097 INFO L175 Difference]: Start difference. First operand has 392 places, 859 transitions, 16767 flow. Second operand 11 states and 219 transitions. [2024-06-28 03:07:04,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 959 transitions, 19785 flow [2024-06-28 03:07:07,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 959 transitions, 18836 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 03:07:07,395 INFO L231 Difference]: Finished difference. Result has 398 places, 899 transitions, 17897 flow [2024-06-28 03:07:07,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15851, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=859, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=512, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17897, PETRI_PLACES=398, PETRI_TRANSITIONS=899} [2024-06-28 03:07:07,396 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 354 predicate places. [2024-06-28 03:07:07,396 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 899 transitions, 17897 flow [2024-06-28 03:07:07,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:07,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:07,396 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 03:07:07,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:07:07,396 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 03:07:07,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:07,397 INFO L85 PathProgramCache]: Analyzing trace with hash -430780718, now seen corresponding path program 5 times [2024-06-28 03:07:07,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:07,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916416962] [2024-06-28 03:07:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:07,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:08,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:08,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916416962] [2024-06-28 03:07:08,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916416962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:08,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:08,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:08,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406481080] [2024-06-28 03:07:08,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:08,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:08,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:08,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:08,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:08,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:07:08,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 899 transitions, 17897 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:08,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:08,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:07:08,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:10,346 INFO L124 PetriNetUnfolderBase]: 4200/6970 cut-off events. [2024-06-28 03:07:10,346 INFO L125 PetriNetUnfolderBase]: For 1253891/1253919 co-relation queries the response was YES. [2024-06-28 03:07:10,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77434 conditions, 6970 events. 4200/6970 cut-off events. For 1253891/1253919 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 46353 event pairs, 825 based on Foata normal form. 28/6932 useless extension candidates. Maximal degree in co-relation 77256. Up to 5624 conditions per place. [2024-06-28 03:07:10,453 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 642 selfloop transitions, 36 changer transitions 0/928 dead transitions. [2024-06-28 03:07:10,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 928 transitions, 19405 flow [2024-06-28 03:07:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:10,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:07:10,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45219638242894056 [2024-06-28 03:07:10,454 INFO L175 Difference]: Start difference. First operand has 398 places, 899 transitions, 17897 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:07:10,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 928 transitions, 19405 flow [2024-06-28 03:07:13,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 928 transitions, 16638 flow, removed 70 selfloop flow, removed 11 redundant places. [2024-06-28 03:07:13,996 INFO L231 Difference]: Finished difference. Result has 399 places, 909 transitions, 15346 flow [2024-06-28 03:07:13,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15131, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=863, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15346, PETRI_PLACES=399, PETRI_TRANSITIONS=909} [2024-06-28 03:07:13,997 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 355 predicate places. [2024-06-28 03:07:13,997 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 909 transitions, 15346 flow [2024-06-28 03:07:13,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:13,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:13,997 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 03:07:13,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:07:13,997 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 03:07:13,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:13,998 INFO L85 PathProgramCache]: Analyzing trace with hash 525760251, now seen corresponding path program 1 times [2024-06-28 03:07:13,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:13,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685295970] [2024-06-28 03:07:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:13,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:15,350 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 03:07:15,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:15,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685295970] [2024-06-28 03:07:15,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685295970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:15,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:15,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:15,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531171401] [2024-06-28 03:07:15,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:15,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:15,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:15,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:15,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:15,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:07:15,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 909 transitions, 15346 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:15,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:15,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:07:15,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:17,352 INFO L124 PetriNetUnfolderBase]: 4480/7267 cut-off events. [2024-06-28 03:07:17,352 INFO L125 PetriNetUnfolderBase]: For 1282366/1282404 co-relation queries the response was YES. [2024-06-28 03:07:17,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74158 conditions, 7267 events. 4480/7267 cut-off events. For 1282366/1282404 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 46966 event pairs, 970 based on Foata normal form. 30/7170 useless extension candidates. Maximal degree in co-relation 73980. Up to 6401 conditions per place. [2024-06-28 03:07:17,648 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 820 selfloop transitions, 18 changer transitions 0/928 dead transitions. [2024-06-28 03:07:17,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 928 transitions, 17146 flow [2024-06-28 03:07:17,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:17,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 03:07:17,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-28 03:07:17,649 INFO L175 Difference]: Start difference. First operand has 399 places, 909 transitions, 15346 flow. Second operand 8 states and 155 transitions. [2024-06-28 03:07:17,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 928 transitions, 17146 flow [2024-06-28 03:07:20,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 928 transitions, 17024 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:20,400 INFO L231 Difference]: Finished difference. Result has 400 places, 912 transitions, 15338 flow [2024-06-28 03:07:20,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15224, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=909, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15338, PETRI_PLACES=400, PETRI_TRANSITIONS=912} [2024-06-28 03:07:20,401 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 356 predicate places. [2024-06-28 03:07:20,401 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 912 transitions, 15338 flow [2024-06-28 03:07:20,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:20,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:20,401 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 03:07:20,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:07:20,402 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 03:07:20,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:20,402 INFO L85 PathProgramCache]: Analyzing trace with hash -470898053, now seen corresponding path program 2 times [2024-06-28 03:07:20,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:20,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440362550] [2024-06-28 03:07:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:20,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:21,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:21,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440362550] [2024-06-28 03:07:21,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440362550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:21,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:21,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:21,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185931780] [2024-06-28 03:07:21,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:21,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:21,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:21,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:21,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:21,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:07:21,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 912 transitions, 15338 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:21,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:21,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:07:21,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:23,641 INFO L124 PetriNetUnfolderBase]: 4474/7263 cut-off events. [2024-06-28 03:07:23,642 INFO L125 PetriNetUnfolderBase]: For 1297571/1297617 co-relation queries the response was YES. [2024-06-28 03:07:23,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74491 conditions, 7263 events. 4474/7263 cut-off events. For 1297571/1297617 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 46962 event pairs, 968 based on Foata normal form. 29/7165 useless extension candidates. Maximal degree in co-relation 74312. Up to 6395 conditions per place. [2024-06-28 03:07:23,741 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 820 selfloop transitions, 19 changer transitions 0/929 dead transitions. [2024-06-28 03:07:23,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 929 transitions, 17144 flow [2024-06-28 03:07:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:23,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:23,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:07:23,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 03:07:23,743 INFO L175 Difference]: Start difference. First operand has 400 places, 912 transitions, 15338 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:07:23,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 929 transitions, 17144 flow [2024-06-28 03:07:26,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 929 transitions, 17030 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:26,629 INFO L231 Difference]: Finished difference. Result has 401 places, 915 transitions, 15346 flow [2024-06-28 03:07:26,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15224, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=912, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=893, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15346, PETRI_PLACES=401, PETRI_TRANSITIONS=915} [2024-06-28 03:07:26,630 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 357 predicate places. [2024-06-28 03:07:26,630 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 915 transitions, 15346 flow [2024-06-28 03:07:26,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:26,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:26,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:26,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:07:26,631 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 03:07:26,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:26,631 INFO L85 PathProgramCache]: Analyzing trace with hash -314435143, now seen corresponding path program 3 times [2024-06-28 03:07:26,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:26,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481303736] [2024-06-28 03:07:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:26,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:27,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:27,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481303736] [2024-06-28 03:07:27,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481303736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:27,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:27,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:27,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059572245] [2024-06-28 03:07:27,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:27,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:27,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:27,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:27,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:28,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:07:28,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 915 transitions, 15346 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:28,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:28,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:07:28,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:30,037 INFO L124 PetriNetUnfolderBase]: 4479/7275 cut-off events. [2024-06-28 03:07:30,037 INFO L125 PetriNetUnfolderBase]: For 1323088/1323146 co-relation queries the response was YES. [2024-06-28 03:07:30,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75002 conditions, 7275 events. 4479/7275 cut-off events. For 1323088/1323146 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 47120 event pairs, 970 based on Foata normal form. 34/7182 useless extension candidates. Maximal degree in co-relation 74823. Up to 6393 conditions per place. [2024-06-28 03:07:30,147 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 816 selfloop transitions, 24 changer transitions 0/930 dead transitions. [2024-06-28 03:07:30,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 930 transitions, 17158 flow [2024-06-28 03:07:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:30,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:30,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:07:30,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 03:07:30,148 INFO L175 Difference]: Start difference. First operand has 401 places, 915 transitions, 15346 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:07:30,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 930 transitions, 17158 flow [2024-06-28 03:07:33,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 930 transitions, 17058 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 03:07:33,428 INFO L231 Difference]: Finished difference. Result has 403 places, 918 transitions, 15384 flow [2024-06-28 03:07:33,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15246, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=915, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15384, PETRI_PLACES=403, PETRI_TRANSITIONS=918} [2024-06-28 03:07:33,429 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 359 predicate places. [2024-06-28 03:07:33,429 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 918 transitions, 15384 flow [2024-06-28 03:07:33,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:33,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:33,429 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 03:07:33,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:07:33,430 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 03:07:33,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:33,430 INFO L85 PathProgramCache]: Analyzing trace with hash 732563421, now seen corresponding path program 4 times [2024-06-28 03:07:33,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:33,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612427114] [2024-06-28 03:07:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:33,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:34,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:34,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612427114] [2024-06-28 03:07:34,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612427114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:34,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:34,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:34,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709974705] [2024-06-28 03:07:34,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:34,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:34,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:34,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:34,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:34,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:07:34,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 918 transitions, 15384 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:34,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:34,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:07:34,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:36,755 INFO L124 PetriNetUnfolderBase]: 4475/7269 cut-off events. [2024-06-28 03:07:36,756 INFO L125 PetriNetUnfolderBase]: For 1333394/1333444 co-relation queries the response was YES. [2024-06-28 03:07:36,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75205 conditions, 7269 events. 4475/7269 cut-off events. For 1333394/1333444 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 47121 event pairs, 969 based on Foata normal form. 34/7177 useless extension candidates. Maximal degree in co-relation 75025. Up to 6368 conditions per place. [2024-06-28 03:07:37,242 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 806 selfloop transitions, 39 changer transitions 0/935 dead transitions. [2024-06-28 03:07:37,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 935 transitions, 17236 flow [2024-06-28 03:07:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:07:37,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 03:07:37,244 INFO L175 Difference]: Start difference. First operand has 403 places, 918 transitions, 15384 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:07:37,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 935 transitions, 17236 flow [2024-06-28 03:07:40,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 935 transitions, 17120 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 03:07:40,231 INFO L231 Difference]: Finished difference. Result has 406 places, 924 transitions, 15487 flow [2024-06-28 03:07:40,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15268, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=918, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=880, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15487, PETRI_PLACES=406, PETRI_TRANSITIONS=924} [2024-06-28 03:07:40,231 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 362 predicate places. [2024-06-28 03:07:40,232 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 924 transitions, 15487 flow [2024-06-28 03:07:40,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:40,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:40,232 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 03:07:40,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:07:40,232 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 03:07:40,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:40,233 INFO L85 PathProgramCache]: Analyzing trace with hash -306806446, now seen corresponding path program 1 times [2024-06-28 03:07:40,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:40,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843737176] [2024-06-28 03:07:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:40,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:41,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:41,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843737176] [2024-06-28 03:07:41,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843737176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:41,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:41,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:41,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395780861] [2024-06-28 03:07:41,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:41,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:41,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:41,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:41,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:42,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-28 03:07:42,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 924 transitions, 15487 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:42,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:42,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-28 03:07:42,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:43,922 INFO L124 PetriNetUnfolderBase]: 4198/6995 cut-off events. [2024-06-28 03:07:43,922 INFO L125 PetriNetUnfolderBase]: For 1347927/1347957 co-relation queries the response was YES. [2024-06-28 03:07:43,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72701 conditions, 6995 events. 4198/6995 cut-off events. For 1347927/1347957 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 46906 event pairs, 1003 based on Foata normal form. 30/6965 useless extension candidates. Maximal degree in co-relation 72519. Up to 5673 conditions per place. [2024-06-28 03:07:44,032 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 668 selfloop transitions, 20 changer transitions 0/938 dead transitions. [2024-06-28 03:07:44,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 938 transitions, 16985 flow [2024-06-28 03:07:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:44,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:44,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:07:44,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-28 03:07:44,033 INFO L175 Difference]: Start difference. First operand has 406 places, 924 transitions, 15487 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:07:44,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 938 transitions, 16985 flow [2024-06-28 03:07:46,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 938 transitions, 16844 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 03:07:46,728 INFO L231 Difference]: Finished difference. Result has 411 places, 926 transitions, 15483 flow [2024-06-28 03:07:46,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15346, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=904, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15483, PETRI_PLACES=411, PETRI_TRANSITIONS=926} [2024-06-28 03:07:46,728 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 367 predicate places. [2024-06-28 03:07:46,729 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 926 transitions, 15483 flow [2024-06-28 03:07:46,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:46,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:46,729 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 03:07:46,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:07:46,729 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 03:07:46,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:46,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1630831002, now seen corresponding path program 1 times [2024-06-28 03:07:46,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:46,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486266792] [2024-06-28 03:07:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:46,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:47,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:47,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486266792] [2024-06-28 03:07:47,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486266792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:47,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:47,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:47,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950202798] [2024-06-28 03:07:47,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:47,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:47,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:47,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:47,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:47,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:07:47,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 926 transitions, 15483 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:47,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:47,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:07:47,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:49,818 INFO L124 PetriNetUnfolderBase]: 5004/7909 cut-off events. [2024-06-28 03:07:49,818 INFO L125 PetriNetUnfolderBase]: For 1308310/1308316 co-relation queries the response was YES. [2024-06-28 03:07:49,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79547 conditions, 7909 events. 5004/7909 cut-off events. For 1308310/1308316 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 49414 event pairs, 834 based on Foata normal form. 8/7916 useless extension candidates. Maximal degree in co-relation 79363. Up to 7306 conditions per place. [2024-06-28 03:07:49,931 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 858 selfloop transitions, 89 changer transitions 0/952 dead transitions. [2024-06-28 03:07:49,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 952 transitions, 17605 flow [2024-06-28 03:07:49,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:49,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:07:49,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-28 03:07:49,932 INFO L175 Difference]: Start difference. First operand has 411 places, 926 transitions, 15483 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:07:49,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 952 transitions, 17605 flow [2024-06-28 03:07:53,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 952 transitions, 17478 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:53,288 INFO L231 Difference]: Finished difference. Result has 413 places, 929 transitions, 15655 flow [2024-06-28 03:07:53,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15356, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=926, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=837, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15655, PETRI_PLACES=413, PETRI_TRANSITIONS=929} [2024-06-28 03:07:53,289 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 369 predicate places. [2024-06-28 03:07:53,289 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 929 transitions, 15655 flow [2024-06-28 03:07:53,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:53,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:53,290 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 03:07:53,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:07:53,290 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 03:07:53,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:53,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1630681272, now seen corresponding path program 2 times [2024-06-28 03:07:53,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:53,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933830735] [2024-06-28 03:07:53,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:53,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:54,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:54,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933830735] [2024-06-28 03:07:54,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933830735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:54,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:54,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:54,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637840896] [2024-06-28 03:07:54,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:54,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:54,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:54,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:54,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:07:54,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 929 transitions, 15655 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:54,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:54,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:07:54,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:56,287 INFO L124 PetriNetUnfolderBase]: 5030/7943 cut-off events. [2024-06-28 03:07:56,287 INFO L125 PetriNetUnfolderBase]: For 1346550/1346556 co-relation queries the response was YES. [2024-06-28 03:07:56,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80947 conditions, 7943 events. 5030/7943 cut-off events. For 1346550/1346556 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 49613 event pairs, 847 based on Foata normal form. 8/7950 useless extension candidates. Maximal degree in co-relation 80762. Up to 7290 conditions per place. [2024-06-28 03:07:56,394 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 860 selfloop transitions, 96 changer transitions 0/961 dead transitions. [2024-06-28 03:07:56,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 961 transitions, 18150 flow [2024-06-28 03:07:56,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:56,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 03:07:56,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-06-28 03:07:56,396 INFO L175 Difference]: Start difference. First operand has 413 places, 929 transitions, 15655 flow. Second operand 8 states and 154 transitions. [2024-06-28 03:07:56,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 961 transitions, 18150 flow [2024-06-28 03:08:00,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 961 transitions, 17922 flow, removed 64 selfloop flow, removed 4 redundant places. [2024-06-28 03:08:00,247 INFO L231 Difference]: Finished difference. Result has 417 places, 935 transitions, 15855 flow [2024-06-28 03:08:00,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15427, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=836, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15855, PETRI_PLACES=417, PETRI_TRANSITIONS=935} [2024-06-28 03:08:00,247 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 373 predicate places. [2024-06-28 03:08:00,247 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 935 transitions, 15855 flow [2024-06-28 03:08:00,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:00,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:00,248 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 03:08:00,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:08:00,248 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:00,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:00,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1430108860, now seen corresponding path program 1 times [2024-06-28 03:08:00,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:00,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110611021] [2024-06-28 03:08:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:00,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:01,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:01,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:01,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110611021] [2024-06-28 03:08:01,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110611021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:01,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:01,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:08:01,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387527725] [2024-06-28 03:08:01,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:01,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:08:01,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:01,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:08:01,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:08:01,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:08:01,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 935 transitions, 15855 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:01,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:01,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:08:01,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:04,021 INFO L124 PetriNetUnfolderBase]: 5287/8414 cut-off events. [2024-06-28 03:08:04,022 INFO L125 PetriNetUnfolderBase]: For 1430425/1430425 co-relation queries the response was YES. [2024-06-28 03:08:04,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84061 conditions, 8414 events. 5287/8414 cut-off events. For 1430425/1430425 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 53799 event pairs, 881 based on Foata normal form. 12/8424 useless extension candidates. Maximal degree in co-relation 83875. Up to 5953 conditions per place. [2024-06-28 03:08:04,159 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 580 selfloop transitions, 419 changer transitions 0/1004 dead transitions. [2024-06-28 03:08:04,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 1004 transitions, 18378 flow [2024-06-28 03:08:04,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:08:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:08:04,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 236 transitions. [2024-06-28 03:08:04,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2024-06-28 03:08:04,161 INFO L175 Difference]: Start difference. First operand has 417 places, 935 transitions, 15855 flow. Second operand 12 states and 236 transitions. [2024-06-28 03:08:04,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 1004 transitions, 18378 flow [2024-06-28 03:08:08,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 1004 transitions, 18225 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-28 03:08:08,017 INFO L231 Difference]: Finished difference. Result has 429 places, 958 transitions, 17000 flow [2024-06-28 03:08:08,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15702, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=935, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17000, PETRI_PLACES=429, PETRI_TRANSITIONS=958} [2024-06-28 03:08:08,017 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 385 predicate places. [2024-06-28 03:08:08,018 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 958 transitions, 17000 flow [2024-06-28 03:08:08,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:08,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:08,018 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 03:08:08,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:08:08,018 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:08,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:08,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1831073168, now seen corresponding path program 2 times [2024-06-28 03:08:08,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:08,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373967509] [2024-06-28 03:08:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:08,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:09,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:09,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373967509] [2024-06-28 03:08:09,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373967509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:09,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:09,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:08:09,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950494390] [2024-06-28 03:08:09,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:09,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:08:09,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:09,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:08:09,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:08:09,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:08:09,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 958 transitions, 17000 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:09,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:09,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:08:09,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:12,376 INFO L124 PetriNetUnfolderBase]: 5397/8619 cut-off events. [2024-06-28 03:08:12,376 INFO L125 PetriNetUnfolderBase]: For 1471715/1471715 co-relation queries the response was YES. [2024-06-28 03:08:12,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87620 conditions, 8619 events. 5397/8619 cut-off events. For 1471715/1471715 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 55659 event pairs, 931 based on Foata normal form. 12/8629 useless extension candidates. Maximal degree in co-relation 87429. Up to 6252 conditions per place. [2024-06-28 03:08:12,496 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 610 selfloop transitions, 400 changer transitions 0/1015 dead transitions. [2024-06-28 03:08:12,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1015 transitions, 19505 flow [2024-06-28 03:08:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:08:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:08:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 237 transitions. [2024-06-28 03:08:12,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-28 03:08:12,498 INFO L175 Difference]: Start difference. First operand has 429 places, 958 transitions, 17000 flow. Second operand 12 states and 237 transitions. [2024-06-28 03:08:12,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1015 transitions, 19505 flow [2024-06-28 03:08:16,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1015 transitions, 19032 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 03:08:16,361 INFO L231 Difference]: Finished difference. Result has 439 places, 966 transitions, 17551 flow [2024-06-28 03:08:16,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=16532, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=958, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=392, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17551, PETRI_PLACES=439, PETRI_TRANSITIONS=966} [2024-06-28 03:08:16,362 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 395 predicate places. [2024-06-28 03:08:16,362 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 966 transitions, 17551 flow [2024-06-28 03:08:16,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:16,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:16,362 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 03:08:16,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:08:16,362 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:16,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:16,363 INFO L85 PathProgramCache]: Analyzing trace with hash -748876958, now seen corresponding path program 3 times [2024-06-28 03:08:16,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:16,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679021404] [2024-06-28 03:08:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:16,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:17,610 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 03:08:17,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:17,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679021404] [2024-06-28 03:08:17,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679021404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:17,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:17,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:08:17,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644167530] [2024-06-28 03:08:17,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:17,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:08:17,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:17,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:08:17,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:08:17,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:08:17,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 966 transitions, 17551 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:17,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:17,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:08:17,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:20,815 INFO L124 PetriNetUnfolderBase]: 5622/9027 cut-off events. [2024-06-28 03:08:20,815 INFO L125 PetriNetUnfolderBase]: For 1576250/1576252 co-relation queries the response was YES. [2024-06-28 03:08:20,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92367 conditions, 9027 events. 5622/9027 cut-off events. For 1576250/1576252 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 59057 event pairs, 863 based on Foata normal form. 14/9039 useless extension candidates. Maximal degree in co-relation 92173. Up to 5409 conditions per place. [2024-06-28 03:08:20,948 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 576 selfloop transitions, 456 changer transitions 0/1037 dead transitions. [2024-06-28 03:08:20,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1037 transitions, 20667 flow [2024-06-28 03:08:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:08:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:08:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-28 03:08:20,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47357293868921774 [2024-06-28 03:08:20,950 INFO L175 Difference]: Start difference. First operand has 439 places, 966 transitions, 17551 flow. Second operand 11 states and 224 transitions. [2024-06-28 03:08:20,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1037 transitions, 20667 flow [2024-06-28 03:08:24,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 1037 transitions, 20039 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 03:08:24,674 INFO L231 Difference]: Finished difference. Result has 447 places, 978 transitions, 18328 flow [2024-06-28 03:08:24,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=16939, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=966, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18328, PETRI_PLACES=447, PETRI_TRANSITIONS=978} [2024-06-28 03:08:24,675 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 403 predicate places. [2024-06-28 03:08:24,675 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 978 transitions, 18328 flow [2024-06-28 03:08:24,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:24,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:24,675 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 03:08:24,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:08:24,676 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:08:24,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:24,676 INFO L85 PathProgramCache]: Analyzing trace with hash -454876332, now seen corresponding path program 4 times [2024-06-28 03:08:24,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:24,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711557234] [2024-06-28 03:08:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:24,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:26,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:26,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711557234] [2024-06-28 03:08:26,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711557234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:26,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:26,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:08:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692796890] [2024-06-28 03:08:26,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:26,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:08:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:08:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:08:26,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:08:26,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 978 transitions, 18328 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:26,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:26,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:08:26,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:29,594 INFO L124 PetriNetUnfolderBase]: 5732/9217 cut-off events. [2024-06-28 03:08:29,594 INFO L125 PetriNetUnfolderBase]: For 1614700/1614702 co-relation queries the response was YES. [2024-06-28 03:08:29,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94799 conditions, 9217 events. 5732/9217 cut-off events. For 1614700/1614702 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 60822 event pairs, 921 based on Foata normal form. 14/9229 useless extension candidates. Maximal degree in co-relation 94602. Up to 6716 conditions per place. [2024-06-28 03:08:29,723 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 600 selfloop transitions, 436 changer transitions 0/1041 dead transitions. [2024-06-28 03:08:29,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 1041 transitions, 20945 flow [2024-06-28 03:08:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:08:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:08:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-28 03:08:29,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714587737843552 [2024-06-28 03:08:29,724 INFO L175 Difference]: Start difference. First operand has 447 places, 978 transitions, 18328 flow. Second operand 11 states and 223 transitions. [2024-06-28 03:08:29,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 1041 transitions, 20945 flow [2024-06-28 03:08:35,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1041 transitions, 20565 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-28 03:08:35,612 INFO L231 Difference]: Finished difference. Result has 455 places, 984 transitions, 19091 flow [2024-06-28 03:08:35,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=17960, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=978, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19091, PETRI_PLACES=455, PETRI_TRANSITIONS=984} [2024-06-28 03:08:35,613 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 411 predicate places. [2024-06-28 03:08:35,613 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 984 transitions, 19091 flow [2024-06-28 03:08:35,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:35,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:35,614 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 03:08:35,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:08:35,614 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 03:08:35,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:35,614 INFO L85 PathProgramCache]: Analyzing trace with hash -843783394, now seen corresponding path program 1 times [2024-06-28 03:08:35,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:35,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930619839] [2024-06-28 03:08:35,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:35,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:36,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:36,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:36,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930619839] [2024-06-28 03:08:36,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930619839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:36,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:36,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:36,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372875180] [2024-06-28 03:08:36,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:36,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:36,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:36,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:36,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:36,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:08:36,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 984 transitions, 19091 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:36,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:36,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:08:36,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:39,806 INFO L124 PetriNetUnfolderBase]: 5361/8743 cut-off events. [2024-06-28 03:08:39,806 INFO L125 PetriNetUnfolderBase]: For 1680950/1680983 co-relation queries the response was YES. [2024-06-28 03:08:39,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93064 conditions, 8743 events. 5361/8743 cut-off events. For 1680950/1680983 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 58918 event pairs, 1105 based on Foata normal form. 33/8637 useless extension candidates. Maximal degree in co-relation 92863. Up to 7775 conditions per place. [2024-06-28 03:08:39,928 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 868 selfloop transitions, 62 changer transitions 0/1010 dead transitions. [2024-06-28 03:08:39,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1010 transitions, 21171 flow [2024-06-28 03:08:39,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:08:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:08:39,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 03:08:39,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-28 03:08:39,929 INFO L175 Difference]: Start difference. First operand has 455 places, 984 transitions, 19091 flow. Second operand 8 states and 158 transitions. [2024-06-28 03:08:39,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1010 transitions, 21171 flow [2024-06-28 03:08:45,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 1010 transitions, 20340 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 03:08:45,043 INFO L231 Difference]: Finished difference. Result has 456 places, 987 transitions, 18517 flow [2024-06-28 03:08:45,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=18260, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=984, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18517, PETRI_PLACES=456, PETRI_TRANSITIONS=987} [2024-06-28 03:08:45,043 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 412 predicate places. [2024-06-28 03:08:45,044 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 987 transitions, 18517 flow [2024-06-28 03:08:45,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:45,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:45,044 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 03:08:45,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:08:45,044 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 03:08:45,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:45,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1458341112, now seen corresponding path program 3 times [2024-06-28 03:08:45,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:45,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455063186] [2024-06-28 03:08:45,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:45,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:45,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:45,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455063186] [2024-06-28 03:08:45,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455063186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:45,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:45,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:45,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726223602] [2024-06-28 03:08:45,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:45,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:45,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:45,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:45,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:08:45,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 987 transitions, 18517 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:45,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:45,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:08:45,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:49,215 INFO L124 PetriNetUnfolderBase]: 5747/9264 cut-off events. [2024-06-28 03:08:49,215 INFO L125 PetriNetUnfolderBase]: For 1604447/1604453 co-relation queries the response was YES. [2024-06-28 03:08:49,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95288 conditions, 9264 events. 5747/9264 cut-off events. For 1604447/1604453 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 61344 event pairs, 928 based on Foata normal form. 8/9271 useless extension candidates. Maximal degree in co-relation 95087. Up to 8533 conditions per place. [2024-06-28 03:08:49,336 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 922 selfloop transitions, 87 changer transitions 0/1014 dead transitions. [2024-06-28 03:08:49,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1014 transitions, 20784 flow [2024-06-28 03:08:49,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:08:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:08:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:08:49,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2024-06-28 03:08:49,338 INFO L175 Difference]: Start difference. First operand has 456 places, 987 transitions, 18517 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:08:49,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1014 transitions, 20784 flow [2024-06-28 03:08:53,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 1014 transitions, 20555 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 03:08:53,582 INFO L231 Difference]: Finished difference. Result has 459 places, 990 transitions, 18579 flow [2024-06-28 03:08:53,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=18288, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=987, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=900, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18579, PETRI_PLACES=459, PETRI_TRANSITIONS=990} [2024-06-28 03:08:53,583 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 415 predicate places. [2024-06-28 03:08:53,583 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 990 transitions, 18579 flow [2024-06-28 03:08:53,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:53,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:53,583 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 03:08:53,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:08:53,584 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 03:08:53,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:53,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2050805180, now seen corresponding path program 4 times [2024-06-28 03:08:53,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:53,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822872952] [2024-06-28 03:08:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:53,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:54,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:54,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:54,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822872952] [2024-06-28 03:08:54,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822872952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:54,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:54,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:08:54,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566187838] [2024-06-28 03:08:54,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:54,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:08:54,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:54,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:08:54,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:08:54,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:08:54,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 990 transitions, 18579 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:54,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:54,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:08:54,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:57,418 INFO L124 PetriNetUnfolderBase]: 5773/9298 cut-off events. [2024-06-28 03:08:57,418 INFO L125 PetriNetUnfolderBase]: For 1647660/1647666 co-relation queries the response was YES. [2024-06-28 03:08:57,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96304 conditions, 9298 events. 5773/9298 cut-off events. For 1647660/1647666 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 61466 event pairs, 1025 based on Foata normal form. 8/9305 useless extension candidates. Maximal degree in co-relation 96102. Up to 8518 conditions per place. [2024-06-28 03:08:57,705 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 920 selfloop transitions, 98 changer transitions 0/1023 dead transitions. [2024-06-28 03:08:57,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 1023 transitions, 21255 flow [2024-06-28 03:08:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:08:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:08:57,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:08:57,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 03:08:57,706 INFO L175 Difference]: Start difference. First operand has 459 places, 990 transitions, 18579 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:08:57,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 1023 transitions, 21255 flow [2024-06-28 03:09:02,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1023 transitions, 21070 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 03:09:02,619 INFO L231 Difference]: Finished difference. Result has 464 places, 996 transitions, 18868 flow [2024-06-28 03:09:02,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=18394, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=990, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=892, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18868, PETRI_PLACES=464, PETRI_TRANSITIONS=996} [2024-06-28 03:09:02,619 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 420 predicate places. [2024-06-28 03:09:02,619 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 996 transitions, 18868 flow [2024-06-28 03:09:02,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:02,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:02,620 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 03:09:02,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:09:02,620 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 03:09:02,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1457982628, now seen corresponding path program 1 times [2024-06-28 03:09:02,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:02,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412272872] [2024-06-28 03:09:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:02,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:03,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:03,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412272872] [2024-06-28 03:09:03,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412272872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:03,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:03,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:09:03,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869126721] [2024-06-28 03:09:03,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:03,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:09:03,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:03,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:09:03,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:09:03,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-28 03:09:03,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 996 transitions, 18868 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:03,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:03,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-28 03:09:03,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:06,512 INFO L124 PetriNetUnfolderBase]: 5400/8809 cut-off events. [2024-06-28 03:09:06,513 INFO L125 PetriNetUnfolderBase]: For 1766905/1766939 co-relation queries the response was YES. [2024-06-28 03:09:06,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94079 conditions, 8809 events. 5400/8809 cut-off events. For 1766905/1766939 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 59470 event pairs, 1068 based on Foata normal form. 35/8708 useless extension candidates. Maximal degree in co-relation 93875. Up to 7878 conditions per place. [2024-06-28 03:09:06,662 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 897 selfloop transitions, 41 changer transitions 0/1021 dead transitions. [2024-06-28 03:09:06,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 1021 transitions, 20960 flow [2024-06-28 03:09:06,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:09:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:09:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 03:09:06,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-28 03:09:06,664 INFO L175 Difference]: Start difference. First operand has 464 places, 996 transitions, 18868 flow. Second operand 8 states and 155 transitions. [2024-06-28 03:09:06,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 1021 transitions, 20960 flow [2024-06-28 03:09:11,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1021 transitions, 20684 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-28 03:09:11,442 INFO L231 Difference]: Finished difference. Result has 467 places, 1000 transitions, 18803 flow [2024-06-28 03:09:11,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=18592, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=996, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=955, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18803, PETRI_PLACES=467, PETRI_TRANSITIONS=1000} [2024-06-28 03:09:11,443 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 423 predicate places. [2024-06-28 03:09:11,443 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 1000 transitions, 18803 flow [2024-06-28 03:09:11,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:11,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:11,443 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 03:09:11,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:09:11,443 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 03:09:11,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:11,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2067210086, now seen corresponding path program 5 times [2024-06-28 03:09:11,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:11,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441658756] [2024-06-28 03:09:11,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:11,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:12,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:12,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441658756] [2024-06-28 03:09:12,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441658756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:12,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:12,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:09:12,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548284541] [2024-06-28 03:09:12,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:12,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:09:12,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:12,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:09:12,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:09:12,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-28 03:09:12,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 1000 transitions, 18803 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:12,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:12,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-28 03:09:12,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:15,363 INFO L124 PetriNetUnfolderBase]: 5809/9354 cut-off events. [2024-06-28 03:09:15,364 INFO L125 PetriNetUnfolderBase]: For 1720283/1720289 co-relation queries the response was YES. [2024-06-28 03:09:15,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98475 conditions, 9354 events. 5809/9354 cut-off events. For 1720283/1720289 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 61947 event pairs, 1024 based on Foata normal form. 8/9361 useless extension candidates. Maximal degree in co-relation 98270. Up to 8481 conditions per place. [2024-06-28 03:09:15,507 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 906 selfloop transitions, 118 changer transitions 0/1029 dead transitions. [2024-06-28 03:09:15,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1029 transitions, 21736 flow [2024-06-28 03:09:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:09:15,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:09:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:09:15,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-28 03:09:15,508 INFO L175 Difference]: Start difference. First operand has 467 places, 1000 transitions, 18803 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:09:15,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1029 transitions, 21736 flow