./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix026_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix026_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix026_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix026_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:30:27,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:30:27,173 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:30:27,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:30:27,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:30:27,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:30:27,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:30:27,201 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:30:27,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:30:27,205 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:30:27,205 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:30:27,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:30:27,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:30:27,207 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:30:27,207 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:30:27,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:30:27,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:30:27,208 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:30:27,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:30:27,208 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:30:27,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:30:27,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:30:27,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:30:27,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:30:27,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:30:27,209 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:30:27,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:30:27,210 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:30:27,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:30:27,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:30:27,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:30:27,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:30:27,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:30:27,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:30:27,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:30:27,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:30:27,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:30:27,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:30:27,213 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:30:27,213 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:30:27,213 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:30:27,213 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:30:27,213 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:30:27,214 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:30:27,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:30:27,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:30:27,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:30:27,444 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:30:27,444 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:30:27,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix026_pso.opt_rmo.opt.i [2024-06-28 01:30:28,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:30:28,653 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:30:28,654 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix026_pso.opt_rmo.opt.i [2024-06-28 01:30:28,678 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be20426d/d54f0ca605db49c9b34d8a5a9012bce7/FLAG42e0b39a8 [2024-06-28 01:30:28,689 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be20426d/d54f0ca605db49c9b34d8a5a9012bce7 [2024-06-28 01:30:28,691 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:30:28,691 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:30:28,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix026_pso.opt_rmo.opt.yml/witness.yml [2024-06-28 01:30:28,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:30:28,860 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:30:28,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:30:28,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:30:28,865 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:30:28,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:30:28" (1/2) ... [2024-06-28 01:30:28,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e406914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:28, skipping insertion in model container [2024-06-28 01:30:28,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:30:28" (1/2) ... [2024-06-28 01:30:28,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c14af43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:28, skipping insertion in model container [2024-06-28 01:30:28,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:30:28" (2/2) ... [2024-06-28 01:30:28,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e406914 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:28, skipping insertion in model container [2024-06-28 01:30:28,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:30:28" (2/2) ... [2024-06-28 01:30:28,869 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:30:28,950 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:30:28,951 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ((((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:30:28,952 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ((((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:30:28,952 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] ((((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:30:28,952 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0) [2024-06-28 01:30:28,952 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:30:28,953 INFO L106 edCorrectnessWitness]: ghost_update [L857-L857] multithreaded = 1; [2024-06-28 01:30:28,989 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:30:29,102 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix026_pso.opt_rmo.opt.i[956,969] [2024-06-28 01:30:29,259 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:30:29,265 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:30:29,290 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix026_pso.opt_rmo.opt.i[956,969] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:30:29,395 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:30:29,425 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:30:29,425 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29 WrapperNode [2024-06-28 01:30:29,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:30:29,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:30:29,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:30:29,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:30:29,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (1/1) ... [2024-06-28 01:30:29,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (1/1) ... [2024-06-28 01:30:29,499 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-06-28 01:30:29,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:30:29,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:30:29,500 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:30:29,500 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:30:29,510 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (1/1) ... [2024-06-28 01:30:29,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (1/1) ... [2024-06-28 01:30:29,513 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (1/1) ... [2024-06-28 01:30:29,535 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:30:29,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (1/1) ... [2024-06-28 01:30:29,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (1/1) ... [2024-06-28 01:30:29,545 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (1/1) ... [2024-06-28 01:30:29,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (1/1) ... [2024-06-28 01:30:29,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (1/1) ... [2024-06-28 01:30:29,555 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (1/1) ... [2024-06-28 01:30:29,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:30:29,559 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:30:29,559 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:30:29,559 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:30:29,560 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (1/1) ... [2024-06-28 01:30:29,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:30:29,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:30:29,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:30:29,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:30:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:30:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:30:29,619 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:30:29,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:30:29,620 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:30:29,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:30:29,620 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:30:29,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:30:29,621 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 01:30:29,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 01:30:29,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:30:29,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:30:29,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:30:29,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:30:29,625 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:30:29,755 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:30:29,757 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:30:30,062 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:30:30,063 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:30:30,242 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:30:30,242 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:30:30,243 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:30:30 BoogieIcfgContainer [2024-06-28 01:30:30,243 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:30:30,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:30:30,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:30:30,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:30:30,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:30:28" (1/4) ... [2024-06-28 01:30:30,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a714a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:30:30, skipping insertion in model container [2024-06-28 01:30:30,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:30:28" (2/4) ... [2024-06-28 01:30:30,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a714a66 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:30:30, skipping insertion in model container [2024-06-28 01:30:30,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:29" (3/4) ... [2024-06-28 01:30:30,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a714a66 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:30:30, skipping insertion in model container [2024-06-28 01:30:30,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:30:30" (4/4) ... [2024-06-28 01:30:30,251 INFO L112 eAbstractionObserver]: Analyzing ICFG mix026_pso.opt_rmo.opt.i [2024-06-28 01:30:30,264 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:30:30,264 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-28 01:30:30,264 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:30:30,307 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:30:30,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-06-28 01:30:30,359 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-06-28 01:30:30,360 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:30:30,363 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 57. Up to 2 conditions per place. [2024-06-28 01:30:30,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-06-28 01:30:30,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-06-28 01:30:30,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:30:30,383 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;@2c3e27ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:30:30,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-28 01:30:30,386 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:30:30,386 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:30:30,387 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:30:30,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:30,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:30:30,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:30:30,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:30,393 INFO L85 PathProgramCache]: Analyzing trace with hash 368477346, now seen corresponding path program 1 times [2024-06-28 01:30:30,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:30,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327879986] [2024-06-28 01:30:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:30,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:31,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:31,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:31,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327879986] [2024-06-28 01:30:31,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327879986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:31,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:31,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:30:31,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449762468] [2024-06-28 01:30:31,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:31,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:30:31,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:31,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:30:31,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:30:31,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-06-28 01:30:31,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:31,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:31,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-06-28 01:30:31,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:33,503 INFO L124 PetriNetUnfolderBase]: 16488/23558 cut-off events. [2024-06-28 01:30:33,503 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-06-28 01:30:33,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45935 conditions, 23558 events. 16488/23558 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 153500 event pairs, 10822 based on Foata normal form. 701/23035 useless extension candidates. Maximal degree in co-relation 45922. Up to 22026 conditions per place. [2024-06-28 01:30:33,668 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 50 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-06-28 01:30:33,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 277 flow [2024-06-28 01:30:33,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:30:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:30:33,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-06-28 01:30:33,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2024-06-28 01:30:33,679 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 122 transitions. [2024-06-28 01:30:33,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 277 flow [2024-06-28 01:30:33,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 270 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:33,686 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-06-28 01:30:33,688 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} [2024-06-28 01:30:33,691 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-28 01:30:33,691 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-06-28 01:30:33,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:33,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:33,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:33,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:30:33,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:30:33,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:33,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1919433089, now seen corresponding path program 1 times [2024-06-28 01:30:33,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:33,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360064880] [2024-06-28 01:30:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:33,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:34,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:34,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360064880] [2024-06-28 01:30:34,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360064880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:34,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:34,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:30:34,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759484355] [2024-06-28 01:30:34,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:34,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:30:34,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:34,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:30:34,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:30:34,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-28 01:30:34,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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 01:30:34,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:34,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-28 01:30:34,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:36,626 INFO L124 PetriNetUnfolderBase]: 19675/29337 cut-off events. [2024-06-28 01:30:36,626 INFO L125 PetriNetUnfolderBase]: For 4791/4791 co-relation queries the response was YES. [2024-06-28 01:30:36,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62661 conditions, 29337 events. 19675/29337 cut-off events. For 4791/4791 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 207775 event pairs, 14321 based on Foata normal form. 4/27534 useless extension candidates. Maximal degree in co-relation 62649. Up to 26160 conditions per place. [2024-06-28 01:30:36,814 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 65 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-06-28 01:30:36,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 398 flow [2024-06-28 01:30:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:30:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:30:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-06-28 01:30:36,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-06-28 01:30:36,816 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 4 states and 156 transitions. [2024-06-28 01:30:36,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 398 flow [2024-06-28 01:30:36,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:30:36,819 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 218 flow [2024-06-28 01:30:36,819 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} [2024-06-28 01:30:36,820 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-06-28 01:30:36,820 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 218 flow [2024-06-28 01:30:36,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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 01:30:36,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:36,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:36,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:30:36,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:30:36,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:36,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1362684730, now seen corresponding path program 1 times [2024-06-28 01:30:36,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:36,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269811194] [2024-06-28 01:30:36,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:36,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:37,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269811194] [2024-06-28 01:30:37,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269811194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:37,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:37,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:30:37,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047837810] [2024-06-28 01:30:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:37,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:30:37,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:30:37,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:30:37,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-28 01:30:37,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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 01:30:37,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:37,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-28 01:30:37,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:40,684 INFO L124 PetriNetUnfolderBase]: 24976/36317 cut-off events. [2024-06-28 01:30:40,684 INFO L125 PetriNetUnfolderBase]: For 14781/14781 co-relation queries the response was YES. [2024-06-28 01:30:40,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85925 conditions, 36317 events. 24976/36317 cut-off events. For 14781/14781 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 247691 event pairs, 12484 based on Foata normal form. 8/34240 useless extension candidates. Maximal degree in co-relation 85911. Up to 32996 conditions per place. [2024-06-28 01:30:40,869 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 91 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-06-28 01:30:40,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 125 transitions, 618 flow [2024-06-28 01:30:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:30:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:30:40,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-06-28 01:30:40,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6408045977011494 [2024-06-28 01:30:40,875 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 218 flow. Second operand 6 states and 223 transitions. [2024-06-28 01:30:40,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 125 transitions, 618 flow [2024-06-28 01:30:40,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 125 transitions, 582 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 01:30:40,880 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 297 flow [2024-06-28 01:30:40,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2024-06-28 01:30:40,881 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2024-06-28 01:30:40,882 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 297 flow [2024-06-28 01:30:40,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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 01:30:40,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:40,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:40,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:30:40,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:30:40,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:40,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1594783448, now seen corresponding path program 1 times [2024-06-28 01:30:40,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:40,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49426120] [2024-06-28 01:30:40,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:40,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:41,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:41,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49426120] [2024-06-28 01:30:41,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49426120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:41,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:41,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:30:41,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114246553] [2024-06-28 01:30:41,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:41,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:30:41,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:41,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:30:41,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:30:41,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-28 01:30:41,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 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 01:30:41,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:41,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-28 01:30:41,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:44,500 INFO L124 PetriNetUnfolderBase]: 23744/33590 cut-off events. [2024-06-28 01:30:44,501 INFO L125 PetriNetUnfolderBase]: For 25319/25319 co-relation queries the response was YES. [2024-06-28 01:30:44,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88781 conditions, 33590 events. 23744/33590 cut-off events. For 25319/25319 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 217517 event pairs, 10780 based on Foata normal form. 6/32156 useless extension candidates. Maximal degree in co-relation 88764. Up to 31473 conditions per place. [2024-06-28 01:30:44,733 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 79 selfloop transitions, 12 changer transitions 0/104 dead transitions. [2024-06-28 01:30:44,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 104 transitions, 575 flow [2024-06-28 01:30:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:30:44,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:30:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-06-28 01:30:44,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-06-28 01:30:44,735 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 297 flow. Second operand 5 states and 165 transitions. [2024-06-28 01:30:44,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 104 transitions, 575 flow [2024-06-28 01:30:44,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 104 transitions, 526 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:30:44,743 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 324 flow [2024-06-28 01:30:44,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2024-06-28 01:30:44,744 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-06-28 01:30:44,744 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 324 flow [2024-06-28 01:30:44,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 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 01:30:44,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:44,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:44,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:30:44,745 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:30:44,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:44,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2100507216, now seen corresponding path program 1 times [2024-06-28 01:30:44,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:44,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591337064] [2024-06-28 01:30:44,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:44,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:44,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:44,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591337064] [2024-06-28 01:30:44,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591337064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:44,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:44,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:30:44,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640572368] [2024-06-28 01:30:44,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:44,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:30:44,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:44,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:30:44,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:30:44,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 58 [2024-06-28 01:30:44,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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 01:30:44,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:44,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 58 [2024-06-28 01:30:44,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:45,870 INFO L124 PetriNetUnfolderBase]: 5516/10450 cut-off events. [2024-06-28 01:30:45,870 INFO L125 PetriNetUnfolderBase]: For 7835/8623 co-relation queries the response was YES. [2024-06-28 01:30:45,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23731 conditions, 10450 events. 5516/10450 cut-off events. For 7835/8623 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 92231 event pairs, 2460 based on Foata normal form. 2/9491 useless extension candidates. Maximal degree in co-relation 23713. Up to 6478 conditions per place. [2024-06-28 01:30:45,948 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 35 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2024-06-28 01:30:45,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 83 transitions, 396 flow [2024-06-28 01:30:45,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:30:45,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:30:45,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-06-28 01:30:45,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7701149425287356 [2024-06-28 01:30:45,950 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 324 flow. Second operand 3 states and 134 transitions. [2024-06-28 01:30:45,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 83 transitions, 396 flow [2024-06-28 01:30:45,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 367 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 01:30:45,953 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 269 flow [2024-06-28 01:30:45,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2024-06-28 01:30:45,954 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2024-06-28 01:30:45,954 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 269 flow [2024-06-28 01:30:45,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 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 01:30:45,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:45,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:45,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:30:45,955 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:30:45,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:45,955 INFO L85 PathProgramCache]: Analyzing trace with hash 710751559, now seen corresponding path program 1 times [2024-06-28 01:30:45,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:45,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444263589] [2024-06-28 01:30:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:45,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:46,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:46,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:46,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444263589] [2024-06-28 01:30:46,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444263589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:46,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:46,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:30:46,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226699486] [2024-06-28 01:30:46,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:46,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:30:46,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:46,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:30:46,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:30:46,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:30:46,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 269 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:46,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:46,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:30:46,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:49,587 INFO L124 PetriNetUnfolderBase]: 24277/33112 cut-off events. [2024-06-28 01:30:49,587 INFO L125 PetriNetUnfolderBase]: For 47603/47603 co-relation queries the response was YES. [2024-06-28 01:30:49,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93446 conditions, 33112 events. 24277/33112 cut-off events. For 47603/47603 co-relation queries the response was YES. Maximal size of possible extension queue 1094. Compared 198277 event pairs, 10534 based on Foata normal form. 6/32952 useless extension candidates. Maximal degree in co-relation 93428. Up to 31979 conditions per place. [2024-06-28 01:30:50,000 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 89 selfloop transitions, 21 changer transitions 4/126 dead transitions. [2024-06-28 01:30:50,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 126 transitions, 693 flow [2024-06-28 01:30:50,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:30:50,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:30:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-06-28 01:30:50,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-06-28 01:30:50,002 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 269 flow. Second operand 6 states and 200 transitions. [2024-06-28 01:30:50,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 126 transitions, 693 flow [2024-06-28 01:30:50,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 126 transitions, 675 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:30:50,014 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 370 flow [2024-06-28 01:30:50,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2024-06-28 01:30:50,015 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 10 predicate places. [2024-06-28 01:30:50,015 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 370 flow [2024-06-28 01:30:50,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:50,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:50,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:50,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:30:50,017 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:30:50,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:50,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1117750249, now seen corresponding path program 2 times [2024-06-28 01:30:50,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:50,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704594072] [2024-06-28 01:30:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:50,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:50,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:50,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704594072] [2024-06-28 01:30:50,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704594072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:50,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:50,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:30:50,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826950958] [2024-06-28 01:30:50,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:50,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:30:50,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:50,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:30:50,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:30:50,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:30:50,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:50,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:50,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:30:50,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:53,685 INFO L124 PetriNetUnfolderBase]: 21311/29119 cut-off events. [2024-06-28 01:30:53,685 INFO L125 PetriNetUnfolderBase]: For 55119/55125 co-relation queries the response was YES. [2024-06-28 01:30:53,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87754 conditions, 29119 events. 21311/29119 cut-off events. For 55119/55125 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 172290 event pairs, 9380 based on Foata normal form. 12/28990 useless extension candidates. Maximal degree in co-relation 87734. Up to 28130 conditions per place. [2024-06-28 01:30:53,852 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 82 selfloop transitions, 21 changer transitions 0/115 dead transitions. [2024-06-28 01:30:53,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 115 transitions, 666 flow [2024-06-28 01:30:53,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:30:53,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:30:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-06-28 01:30:53,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2024-06-28 01:30:53,854 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 370 flow. Second operand 6 states and 189 transitions. [2024-06-28 01:30:53,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 115 transitions, 666 flow [2024-06-28 01:30:53,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 115 transitions, 620 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 01:30:53,883 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 377 flow [2024-06-28 01:30:53,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=377, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-06-28 01:30:53,884 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-06-28 01:30:53,884 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 377 flow [2024-06-28 01:30:53,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:53,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:53,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:53,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:30:53,884 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:30:53,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:53,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1997941605, now seen corresponding path program 1 times [2024-06-28 01:30:53,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:53,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145312330] [2024-06-28 01:30:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:53,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:54,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:54,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145312330] [2024-06-28 01:30:54,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145312330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:54,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:54,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:30:54,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845345748] [2024-06-28 01:30:54,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:54,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:30:54,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:54,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:30:54,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:30:54,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:30:54,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 377 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:54,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:54,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:30:54,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:57,391 INFO L124 PetriNetUnfolderBase]: 21504/29409 cut-off events. [2024-06-28 01:30:57,392 INFO L125 PetriNetUnfolderBase]: For 59022/59026 co-relation queries the response was YES. [2024-06-28 01:30:57,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88560 conditions, 29409 events. 21504/29409 cut-off events. For 59022/59026 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 174242 event pairs, 9908 based on Foata normal form. 10/29276 useless extension candidates. Maximal degree in co-relation 88538. Up to 28412 conditions per place. [2024-06-28 01:30:57,577 INFO L140 encePairwiseOnDemand]: 42/58 looper letters, 112 selfloop transitions, 33 changer transitions 0/157 dead transitions. [2024-06-28 01:30:57,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 157 transitions, 930 flow [2024-06-28 01:30:57,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-06-28 01:30:57,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5495689655172413 [2024-06-28 01:30:57,582 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 377 flow. Second operand 8 states and 255 transitions. [2024-06-28 01:30:57,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 157 transitions, 930 flow [2024-06-28 01:30:57,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 157 transitions, 856 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:57,609 INFO L231 Difference]: Finished difference. Result has 83 places, 97 transitions, 537 flow [2024-06-28 01:30:57,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=537, PETRI_PLACES=83, PETRI_TRANSITIONS=97} [2024-06-28 01:30:57,610 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2024-06-28 01:30:57,610 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 97 transitions, 537 flow [2024-06-28 01:30:57,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:57,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:57,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:57,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:30:57,611 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:30:57,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:57,611 INFO L85 PathProgramCache]: Analyzing trace with hash 558343013, now seen corresponding path program 2 times [2024-06-28 01:30:57,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:57,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614496037] [2024-06-28 01:30:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:57,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:58,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:58,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614496037] [2024-06-28 01:30:58,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614496037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:58,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:58,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:30:58,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037876047] [2024-06-28 01:30:58,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:58,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:30:58,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:58,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:30:58,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:30:58,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:30:58,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 97 transitions, 537 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:58,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:58,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:30:58,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:01,211 INFO L124 PetriNetUnfolderBase]: 21580/29595 cut-off events. [2024-06-28 01:31:01,211 INFO L125 PetriNetUnfolderBase]: For 82156/82164 co-relation queries the response was YES. [2024-06-28 01:31:01,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96145 conditions, 29595 events. 21580/29595 cut-off events. For 82156/82164 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 176214 event pairs, 9720 based on Foata normal form. 14/29449 useless extension candidates. Maximal degree in co-relation 96121. Up to 28454 conditions per place. [2024-06-28 01:31:01,392 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 111 selfloop transitions, 34 changer transitions 0/157 dead transitions. [2024-06-28 01:31:01,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 157 transitions, 1045 flow [2024-06-28 01:31:01,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-28 01:31:01,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5492610837438424 [2024-06-28 01:31:01,394 INFO L175 Difference]: Start difference. First operand has 83 places, 97 transitions, 537 flow. Second operand 7 states and 223 transitions. [2024-06-28 01:31:01,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 157 transitions, 1045 flow [2024-06-28 01:31:01,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 157 transitions, 987 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:01,426 INFO L231 Difference]: Finished difference. Result has 87 places, 101 transitions, 614 flow [2024-06-28 01:31:01,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=614, PETRI_PLACES=87, PETRI_TRANSITIONS=101} [2024-06-28 01:31:01,426 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2024-06-28 01:31:01,426 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 101 transitions, 614 flow [2024-06-28 01:31:01,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:01,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:01,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:01,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:31:01,427 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:31:01,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash 729165413, now seen corresponding path program 3 times [2024-06-28 01:31:01,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:01,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14110144] [2024-06-28 01:31:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:01,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:02,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:02,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14110144] [2024-06-28 01:31:02,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14110144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:02,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:02,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:02,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174546321] [2024-06-28 01:31:02,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:02,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:02,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:02,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:31:02,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 101 transitions, 614 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:02,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:02,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:31:02,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:05,159 INFO L124 PetriNetUnfolderBase]: 21656/29712 cut-off events. [2024-06-28 01:31:05,159 INFO L125 PetriNetUnfolderBase]: For 108144/108146 co-relation queries the response was YES. [2024-06-28 01:31:05,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102603 conditions, 29712 events. 21656/29712 cut-off events. For 108144/108146 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 176739 event pairs, 8785 based on Foata normal form. 6/29559 useless extension candidates. Maximal degree in co-relation 102578. Up to 28267 conditions per place. [2024-06-28 01:31:05,386 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 103 selfloop transitions, 50 changer transitions 0/165 dead transitions. [2024-06-28 01:31:05,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 165 transitions, 1226 flow [2024-06-28 01:31:05,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-06-28 01:31:05,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5665024630541872 [2024-06-28 01:31:05,388 INFO L175 Difference]: Start difference. First operand has 87 places, 101 transitions, 614 flow. Second operand 7 states and 230 transitions. [2024-06-28 01:31:05,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 165 transitions, 1226 flow [2024-06-28 01:31:05,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 165 transitions, 1107 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:05,442 INFO L231 Difference]: Finished difference. Result has 89 places, 109 transitions, 720 flow [2024-06-28 01:31:05,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=720, PETRI_PLACES=89, PETRI_TRANSITIONS=109} [2024-06-28 01:31:05,443 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2024-06-28 01:31:05,443 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 109 transitions, 720 flow [2024-06-28 01:31:05,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:05,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:05,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:05,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:31:05,444 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:31:05,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash 297670325, now seen corresponding path program 4 times [2024-06-28 01:31:05,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:05,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039057119] [2024-06-28 01:31:05,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:05,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:06,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:06,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039057119] [2024-06-28 01:31:06,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039057119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:06,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:06,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:06,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494841648] [2024-06-28 01:31:06,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:06,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:06,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:06,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:06,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:06,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:31:06,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 109 transitions, 720 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:06,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:06,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:31:06,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:09,293 INFO L124 PetriNetUnfolderBase]: 21638/29690 cut-off events. [2024-06-28 01:31:09,293 INFO L125 PetriNetUnfolderBase]: For 108932/108936 co-relation queries the response was YES. [2024-06-28 01:31:09,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102476 conditions, 29690 events. 21638/29690 cut-off events. For 108932/108936 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 176631 event pairs, 8795 based on Foata normal form. 6/29537 useless extension candidates. Maximal degree in co-relation 102450. Up to 28252 conditions per place. [2024-06-28 01:31:09,556 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 97 selfloop transitions, 50 changer transitions 0/159 dead transitions. [2024-06-28 01:31:09,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 159 transitions, 1158 flow [2024-06-28 01:31:09,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:09,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:09,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-28 01:31:09,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5492610837438424 [2024-06-28 01:31:09,558 INFO L175 Difference]: Start difference. First operand has 89 places, 109 transitions, 720 flow. Second operand 7 states and 223 transitions. [2024-06-28 01:31:09,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 159 transitions, 1158 flow [2024-06-28 01:31:09,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 159 transitions, 1075 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:09,640 INFO L231 Difference]: Finished difference. Result has 93 places, 109 transitions, 748 flow [2024-06-28 01:31:09,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=748, PETRI_PLACES=93, PETRI_TRANSITIONS=109} [2024-06-28 01:31:09,641 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 27 predicate places. [2024-06-28 01:31:09,641 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 109 transitions, 748 flow [2024-06-28 01:31:09,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:09,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:09,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:31:09,642 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:31:09,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash -124817701, now seen corresponding path program 1 times [2024-06-28 01:31:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422655771] [2024-06-28 01:31:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:11,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:11,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422655771] [2024-06-28 01:31:11,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422655771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:11,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:11,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:11,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588983988] [2024-06-28 01:31:11,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:11,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:11,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:11,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:11,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:11,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-28 01:31:11,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 109 transitions, 748 flow. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:11,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:11,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-28 01:31:11,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:13,822 INFO L124 PetriNetUnfolderBase]: 18168/25333 cut-off events. [2024-06-28 01:31:13,822 INFO L125 PetriNetUnfolderBase]: For 100656/100658 co-relation queries the response was YES. [2024-06-28 01:31:13,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89289 conditions, 25333 events. 18168/25333 cut-off events. For 100656/100658 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 154077 event pairs, 7413 based on Foata normal form. 6/25091 useless extension candidates. Maximal degree in co-relation 89261. Up to 24123 conditions per place. [2024-06-28 01:31:14,013 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 134 selfloop transitions, 17 changer transitions 0/164 dead transitions. [2024-06-28 01:31:14,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 164 transitions, 1255 flow [2024-06-28 01:31:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:14,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:14,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-06-28 01:31:14,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467980295566502 [2024-06-28 01:31:14,014 INFO L175 Difference]: Start difference. First operand has 93 places, 109 transitions, 748 flow. Second operand 7 states and 222 transitions. [2024-06-28 01:31:14,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 164 transitions, 1255 flow [2024-06-28 01:31:14,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 164 transitions, 1114 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:14,065 INFO L231 Difference]: Finished difference. Result has 95 places, 116 transitions, 729 flow [2024-06-28 01:31:14,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=729, PETRI_PLACES=95, PETRI_TRANSITIONS=116} [2024-06-28 01:31:14,066 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 29 predicate places. [2024-06-28 01:31:14,066 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 116 transitions, 729 flow [2024-06-28 01:31:14,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:14,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:14,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:14,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:31:14,067 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:31:14,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash -47212675, now seen corresponding path program 1 times [2024-06-28 01:31:14,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:14,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345710897] [2024-06-28 01:31:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:14,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:14,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:14,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345710897] [2024-06-28 01:31:14,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345710897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:14,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:14,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:31:14,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258824201] [2024-06-28 01:31:14,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:14,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:31:14,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:14,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:31:14,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:31:14,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-28 01:31:14,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 116 transitions, 729 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:14,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:14,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-28 01:31:14,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:17,220 INFO L124 PetriNetUnfolderBase]: 17100/26873 cut-off events. [2024-06-28 01:31:17,220 INFO L125 PetriNetUnfolderBase]: For 121785/121817 co-relation queries the response was YES. [2024-06-28 01:31:17,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92891 conditions, 26873 events. 17100/26873 cut-off events. For 121785/121817 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 198519 event pairs, 9073 based on Foata normal form. 32/25982 useless extension candidates. Maximal degree in co-relation 92861. Up to 22891 conditions per place. [2024-06-28 01:31:17,402 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 116 selfloop transitions, 11 changer transitions 0/145 dead transitions. [2024-06-28 01:31:17,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 145 transitions, 1116 flow [2024-06-28 01:31:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:31:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:31:17,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2024-06-28 01:31:17,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413793103448276 [2024-06-28 01:31:17,405 INFO L175 Difference]: Start difference. First operand has 95 places, 116 transitions, 729 flow. Second operand 5 states and 157 transitions. [2024-06-28 01:31:17,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 145 transitions, 1116 flow [2024-06-28 01:31:17,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 145 transitions, 1048 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:17,462 INFO L231 Difference]: Finished difference. Result has 97 places, 125 transitions, 789 flow [2024-06-28 01:31:17,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=789, PETRI_PLACES=97, PETRI_TRANSITIONS=125} [2024-06-28 01:31:17,463 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 31 predicate places. [2024-06-28 01:31:17,463 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 125 transitions, 789 flow [2024-06-28 01:31:17,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:17,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:17,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:17,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:31:17,463 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:31:17,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:17,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1491296598, now seen corresponding path program 1 times [2024-06-28 01:31:17,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:17,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158206957] [2024-06-28 01:31:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:17,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:18,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:18,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158206957] [2024-06-28 01:31:18,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158206957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:18,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:18,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:18,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74400496] [2024-06-28 01:31:18,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:18,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:18,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:18,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:18,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:18,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-28 01:31:18,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 125 transitions, 789 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:18,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:18,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-28 01:31:18,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:21,129 INFO L124 PetriNetUnfolderBase]: 20385/31217 cut-off events. [2024-06-28 01:31:21,130 INFO L125 PetriNetUnfolderBase]: For 166173/166205 co-relation queries the response was YES. [2024-06-28 01:31:21,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114041 conditions, 31217 events. 20385/31217 cut-off events. For 166173/166205 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 226040 event pairs, 10928 based on Foata normal form. 33/30478 useless extension candidates. Maximal degree in co-relation 114009. Up to 27171 conditions per place. [2024-06-28 01:31:21,725 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 129 selfloop transitions, 24 changer transitions 0/170 dead transitions. [2024-06-28 01:31:21,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 170 transitions, 1345 flow [2024-06-28 01:31:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-28 01:31:21,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2024-06-28 01:31:21,726 INFO L175 Difference]: Start difference. First operand has 97 places, 125 transitions, 789 flow. Second operand 6 states and 188 transitions. [2024-06-28 01:31:21,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 170 transitions, 1345 flow [2024-06-28 01:31:21,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 170 transitions, 1306 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:21,808 INFO L231 Difference]: Finished difference. Result has 103 places, 140 transitions, 962 flow [2024-06-28 01:31:21,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=962, PETRI_PLACES=103, PETRI_TRANSITIONS=140} [2024-06-28 01:31:21,808 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 37 predicate places. [2024-06-28 01:31:21,808 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 140 transitions, 962 flow [2024-06-28 01:31:21,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:21,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:21,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:21,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:31:21,809 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:31:21,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:21,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1674774560, now seen corresponding path program 1 times [2024-06-28 01:31:21,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:21,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915485885] [2024-06-28 01:31:21,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:21,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:22,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:22,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915485885] [2024-06-28 01:31:22,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915485885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:22,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:22,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:22,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042998223] [2024-06-28 01:31:22,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:22,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:22,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:22,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:22,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:23,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:31:23,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 140 transitions, 962 flow. Second operand has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:23,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:23,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:31:23,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:26,966 INFO L124 PetriNetUnfolderBase]: 23970/35468 cut-off events. [2024-06-28 01:31:26,966 INFO L125 PetriNetUnfolderBase]: For 242900/243006 co-relation queries the response was YES. [2024-06-28 01:31:27,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141966 conditions, 35468 events. 23970/35468 cut-off events. For 242900/243006 co-relation queries the response was YES. Maximal size of possible extension queue 1247. Compared 244745 event pairs, 9159 based on Foata normal form. 32/34354 useless extension candidates. Maximal degree in co-relation 141930. Up to 30780 conditions per place. [2024-06-28 01:31:27,308 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 173 selfloop transitions, 45 changer transitions 0/233 dead transitions. [2024-06-28 01:31:27,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 233 transitions, 1860 flow [2024-06-28 01:31:27,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:27,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 294 transitions. [2024-06-28 01:31:27,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-06-28 01:31:27,310 INFO L175 Difference]: Start difference. First operand has 103 places, 140 transitions, 962 flow. Second operand 9 states and 294 transitions. [2024-06-28 01:31:27,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 233 transitions, 1860 flow [2024-06-28 01:31:27,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 233 transitions, 1824 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-28 01:31:27,432 INFO L231 Difference]: Finished difference. Result has 111 places, 144 transitions, 1113 flow [2024-06-28 01:31:27,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1113, PETRI_PLACES=111, PETRI_TRANSITIONS=144} [2024-06-28 01:31:27,432 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 45 predicate places. [2024-06-28 01:31:27,432 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 144 transitions, 1113 flow [2024-06-28 01:31:27,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:27,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:27,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:27,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:31:27,433 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:31:27,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:27,433 INFO L85 PathProgramCache]: Analyzing trace with hash 732280326, now seen corresponding path program 2 times [2024-06-28 01:31:27,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:27,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955272641] [2024-06-28 01:31:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:27,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:28,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:28,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955272641] [2024-06-28 01:31:28,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955272641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:28,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:28,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:28,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29820003] [2024-06-28 01:31:28,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:28,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:28,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:28,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:28,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:28,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-28 01:31:28,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 144 transitions, 1113 flow. Second operand has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:28,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:28,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-28 01:31:28,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:32,741 INFO L124 PetriNetUnfolderBase]: 23901/35398 cut-off events. [2024-06-28 01:31:32,741 INFO L125 PetriNetUnfolderBase]: For 270386/270492 co-relation queries the response was YES. [2024-06-28 01:31:32,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144874 conditions, 35398 events. 23901/35398 cut-off events. For 270386/270492 co-relation queries the response was YES. Maximal size of possible extension queue 1248. Compared 243964 event pairs, 10739 based on Foata normal form. 38/34286 useless extension candidates. Maximal degree in co-relation 144835. Up to 31066 conditions per place. [2024-06-28 01:31:33,030 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 160 selfloop transitions, 40 changer transitions 0/215 dead transitions. [2024-06-28 01:31:33,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 215 transitions, 1763 flow [2024-06-28 01:31:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:33,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:33,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 257 transitions. [2024-06-28 01:31:33,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5538793103448276 [2024-06-28 01:31:33,032 INFO L175 Difference]: Start difference. First operand has 111 places, 144 transitions, 1113 flow. Second operand 8 states and 257 transitions. [2024-06-28 01:31:33,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 215 transitions, 1763 flow [2024-06-28 01:31:33,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 215 transitions, 1685 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:33,217 INFO L231 Difference]: Finished difference. Result has 114 places, 144 transitions, 1127 flow [2024-06-28 01:31:33,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1127, PETRI_PLACES=114, PETRI_TRANSITIONS=144} [2024-06-28 01:31:33,218 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 48 predicate places. [2024-06-28 01:31:33,218 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 144 transitions, 1127 flow [2024-06-28 01:31:33,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:33,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:33,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:33,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:31:33,219 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-28 01:31:33,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash -187948026, now seen corresponding path program 3 times [2024-06-28 01:31:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:33,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738286301] [2024-06-28 01:31:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:33,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat