./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:28:45,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:28:45,405 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:28:45,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:28:45,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:28:45,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:28:45,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:28:45,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:28:45,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:28:45,434 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:28:45,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:28:45,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:28:45,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:28:45,437 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:28:45,437 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:28:45,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:28:45,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:28:45,440 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:28:45,441 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:28:45,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:28:45,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:28:45,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:28:45,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:28:45,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:28:45,442 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:28:45,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:28:45,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:28:45,443 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:28:45,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:28:45,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:28:45,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:28:45,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:28:45,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:28:45,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:28:45,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:28:45,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:28:45,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:28:45,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:28:45,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:28:45,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:28:45,446 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:28:45,446 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:28:45,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:28:45,447 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:28:45,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:28:45,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:28:45,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:28:45,693 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:28:45,693 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:28:45,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-05-12 13:28:46,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:28:46,927 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:28:46,928 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-05-12 13:28:46,947 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee684f2d/16f24dff68b14db88575b4d8267f0094/FLAG8d4ac4b6a [2024-05-12 13:28:46,957 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ee684f2d/16f24dff68b14db88575b4d8267f0094 [2024-05-12 13:28:46,959 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:28:46,962 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:28:46,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-05-12 13:28:47,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:28:47,160 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:28:47,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:28:47,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:28:47,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:28:47,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:28:46" (1/2) ... [2024-05-12 13:28:47,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14de0541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:28:47, skipping insertion in model container [2024-05-12 13:28:47,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:28:46" (1/2) ... [2024-05-12 13:28:47,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f484c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:28:47, skipping insertion in model container [2024-05-12 13:28:47,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:28:47" (2/2) ... [2024-05-12 13:28:47,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14de0541 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47, skipping insertion in model container [2024-05-12 13:28:47,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:28:47" (2/2) ... [2024-05-12 13:28:47,171 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:28:47,261 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:28:47,262 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((((! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0) [2024-05-12 13:28:47,263 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] (((((((((((((((((((! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0) [2024-05-12 13:28:47,263 INFO L97 edCorrectnessWitness]: Location invariant before [L842-L842] (((((((((((((((((((! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0) [2024-05-12 13:28:47,263 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] (((((((((((((((((((! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0) [2024-05-12 13:28:47,263 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:28:47,264 INFO L106 edCorrectnessWitness]: ghost_update [L835-L835] multithreaded = 1; [2024-05-12 13:28:47,302 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:28:47,447 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2024-05-12 13:28:47,582 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:28:47,590 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:28:47,618 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:28:47,715 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:28:47,743 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:28:47,744 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47 WrapperNode [2024-05-12 13:28:47,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:28:47,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:28:47,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:28:47,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:28:47,751 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 12.05 01:28:47" (1/1) ... [2024-05-12 13:28:47,769 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 12.05 01:28:47" (1/1) ... [2024-05-12 13:28:47,797 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 165 [2024-05-12 13:28:47,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:28:47,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:28:47,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:28:47,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:28:47,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47" (1/1) ... [2024-05-12 13:28:47,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47" (1/1) ... [2024-05-12 13:28:47,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47" (1/1) ... [2024-05-12 13:28:47,849 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-05-12 13:28:47,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47" (1/1) ... [2024-05-12 13:28:47,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47" (1/1) ... [2024-05-12 13:28:47,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47" (1/1) ... [2024-05-12 13:28:47,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47" (1/1) ... [2024-05-12 13:28:47,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47" (1/1) ... [2024-05-12 13:28:47,896 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47" (1/1) ... [2024-05-12 13:28:47,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:28:47,900 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:28:47,900 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:28:47,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:28:47,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47" (1/1) ... [2024-05-12 13:28:47,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:28:47,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:28:47,928 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) [2024-05-12 13:28:47,944 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 [2024-05-12 13:28:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:28:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:28:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:28:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:28:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 13:28:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:28:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:28:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:28:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:28:47,974 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:28:47,974 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:28:47,974 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:28:47,974 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:28:47,976 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:28:47,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:28:47,976 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-05-12 13:28:47,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-05-12 13:28:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:28:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:28:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:28:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:28:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 13:28:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:28:47,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:28:47,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:28:47,979 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:28:48,117 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:28:48,119 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:28:48,415 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:28:48,415 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:28:48,572 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:28:48,572 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:28:48,573 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:28:48 BoogieIcfgContainer [2024-05-12 13:28:48,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:28:48,575 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:28:48,575 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:28:48,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:28:48,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:28:46" (1/4) ... [2024-05-12 13:28:48,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b98a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:28:48, skipping insertion in model container [2024-05-12 13:28:48,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:28:47" (2/4) ... [2024-05-12 13:28:48,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b98a1a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:28:48, skipping insertion in model container [2024-05-12 13:28:48,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:47" (3/4) ... [2024-05-12 13:28:48,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b98a1a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:28:48, skipping insertion in model container [2024-05-12 13:28:48,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:28:48" (4/4) ... [2024-05-12 13:28:48,580 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-05-12 13:28:48,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:28:48,593 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:28:48,593 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:28:48,638 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:28:48,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-05-12 13:28:48,699 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-05-12 13:28:48,699 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:28:48,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-05-12 13:28:48,702 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-05-12 13:28:48,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-05-12 13:28:48,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:28:48,722 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;@709edc8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:28:48,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:28:48,725 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:28:48,726 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:28:48,726 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:28:48,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:48,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:28:48,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:28:48,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1470426458, now seen corresponding path program 1 times [2024-05-12 13:28:48,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:48,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987593031] [2024-05-12 13:28:48,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:48,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:49,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:49,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987593031] [2024-05-12 13:28:49,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987593031] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:49,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:49,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:28:49,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831781139] [2024-05-12 13:28:49,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:49,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:28:49,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:49,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:28:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:28:49,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-05-12 13:28:49,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:49,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:49,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-05-12 13:28:49,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:52,758 INFO L124 PetriNetUnfolderBase]: 24246/33117 cut-off events. [2024-05-12 13:28:52,758 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-05-12 13:28:52,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65650 conditions, 33117 events. 24246/33117 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 1212. Compared 201342 event pairs, 16417 based on Foata normal form. 901/32615 useless extension candidates. Maximal degree in co-relation 65634. Up to 32147 conditions per place. [2024-05-12 13:28:53,047 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 55 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-05-12 13:28:53,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 289 flow [2024-05-12 13:28:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:28:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:28:53,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-05-12 13:28:53,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6609195402298851 [2024-05-12 13:28:53,058 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 115 transitions. [2024-05-12 13:28:53,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 289 flow [2024-05-12 13:28:53,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 282 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 13:28:53,073 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-05-12 13:28:53,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-05-12 13:28:53,077 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-05-12 13:28:53,077 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-05-12 13:28:53,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:53,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:53,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:53,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:28:53,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:28:53,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash -35525371, now seen corresponding path program 1 times [2024-05-12 13:28:53,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:53,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652974875] [2024-05-12 13:28:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:53,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:53,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:53,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:53,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652974875] [2024-05-12 13:28:53,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652974875] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:53,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:53,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:28:53,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497797556] [2024-05-12 13:28:53,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:53,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:28:53,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:53,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:28:53,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:28:53,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2024-05-12 13:28:53,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:53,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:53,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2024-05-12 13:28:53,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:56,631 INFO L124 PetriNetUnfolderBase]: 28205/40528 cut-off events. [2024-05-12 13:28:56,632 INFO L125 PetriNetUnfolderBase]: For 6193/6193 co-relation queries the response was YES. [2024-05-12 13:28:56,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87016 conditions, 40528 events. 28205/40528 cut-off events. For 6193/6193 co-relation queries the response was YES. Maximal size of possible extension queue 1485. Compared 274357 event pairs, 22175 based on Foata normal form. 4/38272 useless extension candidates. Maximal degree in co-relation 87001. Up to 37271 conditions per place. [2024-05-12 13:28:57,061 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 71 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2024-05-12 13:28:57,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 414 flow [2024-05-12 13:28:57,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:28:57,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:28:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-05-12 13:28:57,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6293103448275862 [2024-05-12 13:28:57,063 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 4 states and 146 transitions. [2024-05-12 13:28:57,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 414 flow [2024-05-12 13:28:57,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:28:57,066 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 218 flow [2024-05-12 13:28:57,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-05-12 13:28:57,066 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-05-12 13:28:57,066 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 218 flow [2024-05-12 13:28:57,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:57,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:57,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:57,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:28:57,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:28:57,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:57,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1101284553, now seen corresponding path program 1 times [2024-05-12 13:28:57,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:57,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028117073] [2024-05-12 13:28:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:57,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:57,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:57,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028117073] [2024-05-12 13:28:57,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028117073] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:57,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:57,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:28:57,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145805602] [2024-05-12 13:28:57,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:57,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:28:57,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:57,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:28:57,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:28:57,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2024-05-12 13:28:57,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:57,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:57,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2024-05-12 13:28:57,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:00,801 INFO L124 PetriNetUnfolderBase]: 28250/37562 cut-off events. [2024-05-12 13:29:00,801 INFO L125 PetriNetUnfolderBase]: For 15454/15454 co-relation queries the response was YES. [2024-05-12 13:29:00,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92911 conditions, 37562 events. 28250/37562 cut-off events. For 15454/15454 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 217602 event pairs, 14153 based on Foata normal form. 7/36348 useless extension candidates. Maximal degree in co-relation 92894. Up to 37169 conditions per place. [2024-05-12 13:29:01,038 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 94 selfloop transitions, 26 changer transitions 0/131 dead transitions. [2024-05-12 13:29:01,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 131 transitions, 680 flow [2024-05-12 13:29:01,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:29:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:29:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-05-12 13:29:01,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6586206896551724 [2024-05-12 13:29:01,045 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 218 flow. Second operand 5 states and 191 transitions. [2024-05-12 13:29:01,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 131 transitions, 680 flow [2024-05-12 13:29:01,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 131 transitions, 656 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-05-12 13:29:01,052 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 379 flow [2024-05-12 13:29:01,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2024-05-12 13:29:01,054 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-05-12 13:29:01,054 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 379 flow [2024-05-12 13:29:01,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:01,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:01,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:01,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:29:01,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:29:01,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:01,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1772437258, now seen corresponding path program 1 times [2024-05-12 13:29:01,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:01,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955319608] [2024-05-12 13:29:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:01,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:01,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:01,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955319608] [2024-05-12 13:29:01,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955319608] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:01,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:01,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:29:01,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147209578] [2024-05-12 13:29:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:01,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:29:01,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:01,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:29:01,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:29:01,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2024-05-12 13:29:01,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:01,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:01,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2024-05-12 13:29:01,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:05,046 INFO L124 PetriNetUnfolderBase]: 28328/40745 cut-off events. [2024-05-12 13:29:05,047 INFO L125 PetriNetUnfolderBase]: For 42470/42476 co-relation queries the response was YES. [2024-05-12 13:29:05,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110818 conditions, 40745 events. 28328/40745 cut-off events. For 42470/42476 co-relation queries the response was YES. Maximal size of possible extension queue 1488. Compared 276145 event pairs, 15719 based on Foata normal form. 18/38486 useless extension candidates. Maximal degree in co-relation 110798. Up to 37153 conditions per place. [2024-05-12 13:29:05,283 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 106 selfloop transitions, 31 changer transitions 0/148 dead transitions. [2024-05-12 13:29:05,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 148 transitions, 867 flow [2024-05-12 13:29:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:29:05,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:29:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-05-12 13:29:05,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6408045977011494 [2024-05-12 13:29:05,285 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 379 flow. Second operand 6 states and 223 transitions. [2024-05-12 13:29:05,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 148 transitions, 867 flow [2024-05-12 13:29:05,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 148 transitions, 851 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-05-12 13:29:05,294 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 475 flow [2024-05-12 13:29:05,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-05-12 13:29:05,295 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-05-12 13:29:05,295 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 475 flow [2024-05-12 13:29:05,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:05,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:05,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:05,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:29:05,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:29:05,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:05,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1142911723, now seen corresponding path program 1 times [2024-05-12 13:29:05,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:05,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371526305] [2024-05-12 13:29:05,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:05,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:06,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:06,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371526305] [2024-05-12 13:29:06,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371526305] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:06,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:06,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:29:06,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109849089] [2024-05-12 13:29:06,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:06,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:29:06,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:06,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:29:06,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:29:06,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2024-05-12 13:29:06,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:06,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:06,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2024-05-12 13:29:06,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:09,441 INFO L124 PetriNetUnfolderBase]: 27302/37215 cut-off events. [2024-05-12 13:29:09,442 INFO L125 PetriNetUnfolderBase]: For 53252/53252 co-relation queries the response was YES. [2024-05-12 13:29:09,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114691 conditions, 37215 events. 27302/37215 cut-off events. For 53252/53252 co-relation queries the response was YES. Maximal size of possible extension queue 1280. Compared 226357 event pairs, 11866 based on Foata normal form. 3/35842 useless extension candidates. Maximal degree in co-relation 114668. Up to 36107 conditions per place. [2024-05-12 13:29:09,720 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 90 selfloop transitions, 12 changer transitions 0/113 dead transitions. [2024-05-12 13:29:09,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 113 transitions, 747 flow [2024-05-12 13:29:09,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:29:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:29:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-05-12 13:29:09,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2024-05-12 13:29:09,722 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 475 flow. Second operand 5 states and 158 transitions. [2024-05-12 13:29:09,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 113 transitions, 747 flow [2024-05-12 13:29:09,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 113 transitions, 659 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-05-12 13:29:09,745 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 423 flow [2024-05-12 13:29:09,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=423, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-05-12 13:29:09,747 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-05-12 13:29:09,747 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 423 flow [2024-05-12 13:29:09,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:09,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:09,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:09,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:29:09,748 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:29:09,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1040053509, now seen corresponding path program 1 times [2024-05-12 13:29:09,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:09,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326969483] [2024-05-12 13:29:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:09,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:10,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:10,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:10,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326969483] [2024-05-12 13:29:10,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326969483] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:10,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:10,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:29:10,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374646570] [2024-05-12 13:29:10,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:10,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:29:10,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:10,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:29:10,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:29:10,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 58 [2024-05-12 13:29:10,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 423 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:10,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:10,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 58 [2024-05-12 13:29:10,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:14,323 INFO L124 PetriNetUnfolderBase]: 27346/37482 cut-off events. [2024-05-12 13:29:14,323 INFO L125 PetriNetUnfolderBase]: For 54920/54920 co-relation queries the response was YES. [2024-05-12 13:29:14,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115269 conditions, 37482 events. 27346/37482 cut-off events. For 54920/54920 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 228958 event pairs, 11439 based on Foata normal form. 5/36085 useless extension candidates. Maximal degree in co-relation 115244. Up to 36029 conditions per place. [2024-05-12 13:29:14,768 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 109 selfloop transitions, 27 changer transitions 0/147 dead transitions. [2024-05-12 13:29:14,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 147 transitions, 955 flow [2024-05-12 13:29:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:29:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:29:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-05-12 13:29:14,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718390804597702 [2024-05-12 13:29:14,770 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 423 flow. Second operand 6 states and 199 transitions. [2024-05-12 13:29:14,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 147 transitions, 955 flow [2024-05-12 13:29:14,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 147 transitions, 919 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:29:14,793 INFO L231 Difference]: Finished difference. Result has 83 places, 101 transitions, 608 flow [2024-05-12 13:29:14,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=83, PETRI_TRANSITIONS=101} [2024-05-12 13:29:14,794 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-05-12 13:29:14,794 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 101 transitions, 608 flow [2024-05-12 13:29:14,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:14,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:14,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:14,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:29:14,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:29:14,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:14,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2123799640, now seen corresponding path program 1 times [2024-05-12 13:29:14,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:14,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939754956] [2024-05-12 13:29:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:14,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:15,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:15,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939754956] [2024-05-12 13:29:15,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939754956] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:15,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:15,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:29:15,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437820275] [2024-05-12 13:29:15,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:15,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:29:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:29:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:29:15,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2024-05-12 13:29:15,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 101 transitions, 608 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) [2024-05-12 13:29:15,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:15,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2024-05-12 13:29:15,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:19,668 INFO L124 PetriNetUnfolderBase]: 31875/42232 cut-off events. [2024-05-12 13:29:19,668 INFO L125 PetriNetUnfolderBase]: For 100433/100445 co-relation queries the response was YES. [2024-05-12 13:29:19,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145995 conditions, 42232 events. 31875/42232 cut-off events. For 100433/100445 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 244346 event pairs, 13518 based on Foata normal form. 14/40852 useless extension candidates. Maximal degree in co-relation 145968. Up to 41857 conditions per place. [2024-05-12 13:29:19,955 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 113 selfloop transitions, 31 changer transitions 0/154 dead transitions. [2024-05-12 13:29:19,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 1084 flow [2024-05-12 13:29:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:29:19,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:29:19,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-05-12 13:29:19,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-05-12 13:29:19,957 INFO L175 Difference]: Start difference. First operand has 83 places, 101 transitions, 608 flow. Second operand 6 states and 196 transitions. [2024-05-12 13:29:19,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 1084 flow [2024-05-12 13:29:20,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 154 transitions, 1052 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-05-12 13:29:20,029 INFO L231 Difference]: Finished difference. Result has 88 places, 106 transitions, 694 flow [2024-05-12 13:29:20,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=694, PETRI_PLACES=88, PETRI_TRANSITIONS=106} [2024-05-12 13:29:20,030 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2024-05-12 13:29:20,030 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 106 transitions, 694 flow [2024-05-12 13:29:20,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) [2024-05-12 13:29:20,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:20,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:20,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:29:20,031 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:29:20,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:20,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1173413110, now seen corresponding path program 2 times [2024-05-12 13:29:20,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:20,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565630736] [2024-05-12 13:29:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:20,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:20,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:20,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565630736] [2024-05-12 13:29:20,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565630736] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:20,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:20,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:29:20,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280183472] [2024-05-12 13:29:20,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:20,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:29:20,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:20,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:29:20,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:29:20,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2024-05-12 13:29:20,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 106 transitions, 694 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) [2024-05-12 13:29:20,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:20,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2024-05-12 13:29:20,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:25,155 INFO L124 PetriNetUnfolderBase]: 31847/42176 cut-off events. [2024-05-12 13:29:25,156 INFO L125 PetriNetUnfolderBase]: For 103636/103642 co-relation queries the response was YES. [2024-05-12 13:29:25,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145368 conditions, 42176 events. 31847/42176 cut-off events. For 103636/103642 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 243607 event pairs, 13550 based on Foata normal form. 4/40781 useless extension candidates. Maximal degree in co-relation 145338. Up to 41823 conditions per place. [2024-05-12 13:29:25,497 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 106 selfloop transitions, 32 changer transitions 0/148 dead transitions. [2024-05-12 13:29:25,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 148 transitions, 1068 flow [2024-05-12 13:29:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:29:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:29:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-05-12 13:29:25,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488505747126436 [2024-05-12 13:29:25,499 INFO L175 Difference]: Start difference. First operand has 88 places, 106 transitions, 694 flow. Second operand 6 states and 191 transitions. [2024-05-12 13:29:25,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 148 transitions, 1068 flow [2024-05-12 13:29:25,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 148 transitions, 1011 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:29:25,601 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 713 flow [2024-05-12 13:29:25,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2024-05-12 13:29:25,602 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 25 predicate places. [2024-05-12 13:29:25,602 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 713 flow [2024-05-12 13:29:25,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 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) [2024-05-12 13:29:25,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:25,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:25,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:29:25,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:29:25,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:25,604 INFO L85 PathProgramCache]: Analyzing trace with hash -169640762, now seen corresponding path program 1 times [2024-05-12 13:29:25,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:25,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17735047] [2024-05-12 13:29:25,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:25,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat