./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix044.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix044.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/mix044.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix044.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:30:18,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:30:18,860 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:30:18,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:30:18,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:30:18,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:30:18,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:30:18,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:30:18,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:30:18,891 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:30:18,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:30:18,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:30:18,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:30:18,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:30:18,893 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:30:18,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:30:18,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:30:18,894 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:30:18,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:30:18,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:30:18,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:30:18,894 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:30:18,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:30:18,895 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:30:18,895 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:30:18,895 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:30:18,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:30:18,895 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:30:18,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:30:18,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:30:18,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:30:18,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:30:18,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:30:18,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:30:18,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:30:18,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:30:18,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:30:18,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:30:18,898 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:30:18,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:30:18,898 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:30:18,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:30:18,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:30:18,898 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:30:19,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:30:19,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:30:19,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:30:19,118 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:30:19,118 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:30:19,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix044.opt.yml/witness.yml [2024-06-28 03:30:19,310 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:30:19,310 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:30:19,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix044.opt.i [2024-06-28 03:30:20,253 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:30:20,442 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:30:20,442 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix044.opt.i [2024-06-28 03:30:20,456 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a75bc839c/d7837cf439bc41e6b80aae06dd2f9f6c/FLAG283fb7f08 [2024-06-28 03:30:20,467 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a75bc839c/d7837cf439bc41e6b80aae06dd2f9f6c [2024-06-28 03:30:20,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:30:20,469 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:30:20,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:30:20,471 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:30:20,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:30:20,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:30:19" (1/2) ... [2024-06-28 03:30:20,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56558f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:30:20, skipping insertion in model container [2024-06-28 03:30:20,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:30:19" (1/2) ... [2024-06-28 03:30:20,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2724b2f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:30:20, skipping insertion in model container [2024-06-28 03:30:20,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:30:20" (2/2) ... [2024-06-28 03:30:20,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56558f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:20, skipping insertion in model container [2024-06-28 03:30:20,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:30:20" (2/2) ... [2024-06-28 03:30:20,478 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:30:20,566 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:30:20,567 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (y == 0 || y == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((x == 0 || x == 1) || x == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0) [2024-06-28 03:30:20,567 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ((((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (y == 0 || y == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((x == 0 || x == 1) || x == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0) [2024-06-28 03:30:20,567 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (y == 0 || y == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((x == 0 || x == 1) || x == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0) [2024-06-28 03:30:20,567 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (y == 0 || y == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 2)) && (z$w_buff1 == 0 || z$w_buff1 == 2)) && ((x == 0 || x == 1) || x == 2)) && ((z == 0 || z == 1) || z == 2)) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0) [2024-06-28 03:30:20,567 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:30:20,568 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-06-28 03:30:20,593 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:30:20,866 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:30:20,881 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:30:20,999 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:30:21,038 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:30:21,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21 WrapperNode [2024-06-28 03:30:21,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:30:21,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:30:21,042 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:30:21,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:30:21,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (1/1) ... [2024-06-28 03:30:21,074 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (1/1) ... [2024-06-28 03:30:21,110 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 164 [2024-06-28 03:30:21,110 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:30:21,111 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:30:21,111 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:30:21,112 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:30:21,120 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (1/1) ... [2024-06-28 03:30:21,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (1/1) ... [2024-06-28 03:30:21,133 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (1/1) ... [2024-06-28 03:30:21,150 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:30:21,153 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (1/1) ... [2024-06-28 03:30:21,153 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (1/1) ... [2024-06-28 03:30:21,163 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (1/1) ... [2024-06-28 03:30:21,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (1/1) ... [2024-06-28 03:30:21,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (1/1) ... [2024-06-28 03:30:21,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (1/1) ... [2024-06-28 03:30:21,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:30:21,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:30:21,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:30:21,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:30:21,186 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (1/1) ... [2024-06-28 03:30:21,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:30:21,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:30:21,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:30:21,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:30:21,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:30:21,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:30:21,235 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:30:21,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:30:21,235 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:30:21,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:30:21,236 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:30:21,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:30:21,236 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:30:21,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:30:21,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:30:21,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:30:21,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:30:21,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:30:21,237 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:30:21,343 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:30:21,344 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:30:21,730 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:30:21,731 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:30:21,866 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:30:21,866 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:30:21,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:30:21 BoogieIcfgContainer [2024-06-28 03:30:21,867 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:30:21,869 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:30:21,869 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:30:21,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:30:21,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:30:19" (1/4) ... [2024-06-28 03:30:21,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731eb12f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:30:21, skipping insertion in model container [2024-06-28 03:30:21,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:30:20" (2/4) ... [2024-06-28 03:30:21,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731eb12f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:30:21, skipping insertion in model container [2024-06-28 03:30:21,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:30:21" (3/4) ... [2024-06-28 03:30:21,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731eb12f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:30:21, skipping insertion in model container [2024-06-28 03:30:21,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:30:21" (4/4) ... [2024-06-28 03:30:21,874 INFO L112 eAbstractionObserver]: Analyzing ICFG mix044.opt.i [2024-06-28 03:30:21,887 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:30:21,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:30:21,887 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:30:21,955 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:30:21,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 03:30:22,016 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-28 03:30:22,017 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:30:22,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:30:22,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-28 03:30:22,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-28 03:30:22,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:30:22,039 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;@4081c163, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:30:22,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:30:22,043 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:30:22,044 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 03:30:22,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:30:22,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:22,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:30:22,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:22,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:22,050 INFO L85 PathProgramCache]: Analyzing trace with hash 385622724, now seen corresponding path program 1 times [2024-06-28 03:30:22,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:22,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86097013] [2024-06-28 03:30:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:22,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:22,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:22,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:22,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86097013] [2024-06-28 03:30:22,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86097013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:22,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:22,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:30:22,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798465038] [2024-06-28 03:30:22,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:22,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:30:22,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:22,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:30:22,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:30:23,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-28 03:30:23,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:23,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:23,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-28 03:30:23,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:24,084 INFO L124 PetriNetUnfolderBase]: 7503/10720 cut-off events. [2024-06-28 03:30:24,084 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-06-28 03:30:24,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21258 conditions, 10720 events. 7503/10720 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 61786 event pairs, 5685 based on Foata normal form. 1/10394 useless extension candidates. Maximal degree in co-relation 21245. Up to 10229 conditions per place. [2024-06-28 03:30:24,144 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 42 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 03:30:24,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 229 flow [2024-06-28 03:30:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:30:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:30:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-28 03:30:24,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-06-28 03:30:24,156 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 99 transitions. [2024-06-28 03:30:24,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 229 flow [2024-06-28 03:30:24,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:30:24,164 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-28 03:30:24,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 03:30:24,168 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-28 03:30:24,168 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-28 03:30:24,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:24,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:24,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:24,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:30:24,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:24,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:24,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1216270883, now seen corresponding path program 1 times [2024-06-28 03:30:24,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:24,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812493005] [2024-06-28 03:30:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:24,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:24,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:24,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812493005] [2024-06-28 03:30:24,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812493005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:24,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:24,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:30:24,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269958806] [2024-06-28 03:30:24,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:24,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:30:24,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:24,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:30:24,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:30:24,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:30:24,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:24,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:24,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:30:24,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:25,878 INFO L124 PetriNetUnfolderBase]: 8591/11980 cut-off events. [2024-06-28 03:30:25,878 INFO L125 PetriNetUnfolderBase]: For 2352/2352 co-relation queries the response was YES. [2024-06-28 03:30:25,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27198 conditions, 11980 events. 8591/11980 cut-off events. For 2352/2352 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 67305 event pairs, 5794 based on Foata normal form. 4/11825 useless extension candidates. Maximal degree in co-relation 27186. Up to 11652 conditions per place. [2024-06-28 03:30:25,942 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 53 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-28 03:30:25,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 323 flow [2024-06-28 03:30:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:30:25,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:30:25,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-28 03:30:25,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2024-06-28 03:30:25,944 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 126 transitions. [2024-06-28 03:30:25,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 323 flow [2024-06-28 03:30:25,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:30:25,947 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-28 03:30:25,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-28 03:30:25,947 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-28 03:30:25,948 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-28 03:30:25,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:25,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:25,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:25,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:30:25,948 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:25,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:25,949 INFO L85 PathProgramCache]: Analyzing trace with hash -950307587, now seen corresponding path program 1 times [2024-06-28 03:30:25,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:25,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15812139] [2024-06-28 03:30:25,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:25,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:26,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:26,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15812139] [2024-06-28 03:30:26,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15812139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:26,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:26,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:30:26,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092588159] [2024-06-28 03:30:26,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:26,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:30:26,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:26,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:30:26,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:30:26,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:30:26,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:26,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:26,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:30:26,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:27,686 INFO L124 PetriNetUnfolderBase]: 8609/12019 cut-off events. [2024-06-28 03:30:27,686 INFO L125 PetriNetUnfolderBase]: For 6745/6745 co-relation queries the response was YES. [2024-06-28 03:30:27,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30490 conditions, 12019 events. 8609/12019 cut-off events. For 6745/6745 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 67490 event pairs, 4384 based on Foata normal form. 7/11877 useless extension candidates. Maximal degree in co-relation 30476. Up to 11573 conditions per place. [2024-06-28 03:30:27,768 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 71 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-28 03:30:27,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 539 flow [2024-06-28 03:30:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:30:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:30:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-06-28 03:30:27,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-06-28 03:30:27,773 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 165 transitions. [2024-06-28 03:30:27,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 539 flow [2024-06-28 03:30:27,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 520 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:30:27,779 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 312 flow [2024-06-28 03:30:27,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-28 03:30:27,780 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-28 03:30:27,780 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 312 flow [2024-06-28 03:30:27,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:27,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:27,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:27,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:30:27,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:27,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:27,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1853626274, now seen corresponding path program 1 times [2024-06-28 03:30:27,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:27,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689567546] [2024-06-28 03:30:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:27,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:28,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:28,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:28,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689567546] [2024-06-28 03:30:28,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689567546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:28,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:28,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:30:28,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497567361] [2024-06-28 03:30:28,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:28,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:30:28,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:28,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:30:28,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:30:28,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-28 03:30:28,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:28,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:28,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-28 03:30:28,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:29,566 INFO L124 PetriNetUnfolderBase]: 8751/12241 cut-off events. [2024-06-28 03:30:29,566 INFO L125 PetriNetUnfolderBase]: For 16566/16585 co-relation queries the response was YES. [2024-06-28 03:30:29,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36546 conditions, 12241 events. 8751/12241 cut-off events. For 16566/16585 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 69168 event pairs, 3463 based on Foata normal form. 48/12140 useless extension candidates. Maximal degree in co-relation 36529. Up to 11565 conditions per place. [2024-06-28 03:30:29,643 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 81 selfloop transitions, 24 changer transitions 0/114 dead transitions. [2024-06-28 03:30:29,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 114 transitions, 694 flow [2024-06-28 03:30:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:30:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:30:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-06-28 03:30:29,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6069182389937107 [2024-06-28 03:30:29,644 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 312 flow. Second operand 6 states and 193 transitions. [2024-06-28 03:30:29,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 114 transitions, 694 flow [2024-06-28 03:30:29,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 114 transitions, 682 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 03:30:29,652 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 381 flow [2024-06-28 03:30:29,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=381, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-06-28 03:30:29,652 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-06-28 03:30:29,653 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 381 flow [2024-06-28 03:30:29,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:29,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:29,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:29,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:30:29,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:29,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1409890327, now seen corresponding path program 1 times [2024-06-28 03:30:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:29,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041301784] [2024-06-28 03:30:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:29,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:30,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041301784] [2024-06-28 03:30:30,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041301784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:30,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:30,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:30:30,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146553132] [2024-06-28 03:30:30,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:30,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:30:30,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:30,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:30:30,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:30:30,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:30:30,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:30,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:30,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:30:30,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:31,534 INFO L124 PetriNetUnfolderBase]: 7644/10972 cut-off events. [2024-06-28 03:30:31,534 INFO L125 PetriNetUnfolderBase]: For 21015/21037 co-relation queries the response was YES. [2024-06-28 03:30:31,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35053 conditions, 10972 events. 7644/10972 cut-off events. For 21015/21037 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 63558 event pairs, 3619 based on Foata normal form. 3/10801 useless extension candidates. Maximal degree in co-relation 35032. Up to 10435 conditions per place. [2024-06-28 03:30:31,603 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 65 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-06-28 03:30:31,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 84 transitions, 575 flow [2024-06-28 03:30:31,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:30:31,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:30:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-28 03:30:31,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49433962264150944 [2024-06-28 03:30:31,605 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 381 flow. Second operand 5 states and 131 transitions. [2024-06-28 03:30:31,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 84 transitions, 575 flow [2024-06-28 03:30:31,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 514 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:30:31,615 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 351 flow [2024-06-28 03:30:31,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-06-28 03:30:31,616 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-06-28 03:30:31,616 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 351 flow [2024-06-28 03:30:31,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:31,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:31,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:31,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:30:31,617 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:31,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:31,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1268366612, now seen corresponding path program 1 times [2024-06-28 03:30:31,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:31,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215041316] [2024-06-28 03:30:31,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:31,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:32,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:32,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215041316] [2024-06-28 03:30:32,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215041316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:32,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:32,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:30:32,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372063579] [2024-06-28 03:30:32,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:32,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:30:32,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:32,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:30:32,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:30:32,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:32,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 351 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:32,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:32,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:32,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:33,512 INFO L124 PetriNetUnfolderBase]: 8755/12232 cut-off events. [2024-06-28 03:30:33,512 INFO L125 PetriNetUnfolderBase]: For 28174/28194 co-relation queries the response was YES. [2024-06-28 03:30:33,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39887 conditions, 12232 events. 8755/12232 cut-off events. For 28174/28194 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 68936 event pairs, 4208 based on Foata normal form. 24/12102 useless extension candidates. Maximal degree in co-relation 39864. Up to 11795 conditions per place. [2024-06-28 03:30:33,597 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 68 selfloop transitions, 25 changer transitions 0/101 dead transitions. [2024-06-28 03:30:33,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 101 transitions, 674 flow [2024-06-28 03:30:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:30:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:30:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 03:30:33,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062893081761006 [2024-06-28 03:30:33,599 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 351 flow. Second operand 6 states and 161 transitions. [2024-06-28 03:30:33,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 101 transitions, 674 flow [2024-06-28 03:30:33,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 101 transitions, 645 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:30:33,609 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 418 flow [2024-06-28 03:30:33,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=418, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2024-06-28 03:30:33,610 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-28 03:30:33,610 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 418 flow [2024-06-28 03:30:33,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:33,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:33,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:33,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:30:33,611 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:33,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:33,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1989958262, now seen corresponding path program 2 times [2024-06-28 03:30:33,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:33,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734904071] [2024-06-28 03:30:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:33,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:34,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:34,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734904071] [2024-06-28 03:30:34,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734904071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:34,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:34,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:30:34,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585606406] [2024-06-28 03:30:34,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:34,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:30:34,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:34,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:30:34,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:30:34,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:34,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 418 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:34,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:34,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:34,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:35,562 INFO L124 PetriNetUnfolderBase]: 8710/12159 cut-off events. [2024-06-28 03:30:35,563 INFO L125 PetriNetUnfolderBase]: For 33653/33681 co-relation queries the response was YES. [2024-06-28 03:30:35,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40733 conditions, 12159 events. 8710/12159 cut-off events. For 33653/33681 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 68353 event pairs, 4222 based on Foata normal form. 24/12023 useless extension candidates. Maximal degree in co-relation 40710. Up to 11726 conditions per place. [2024-06-28 03:30:35,642 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 61 selfloop transitions, 26 changer transitions 0/95 dead transitions. [2024-06-28 03:30:35,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 654 flow [2024-06-28 03:30:35,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:30:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:30:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 03:30:35,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-06-28 03:30:35,644 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 418 flow. Second operand 6 states and 156 transitions. [2024-06-28 03:30:35,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 654 flow [2024-06-28 03:30:35,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 95 transitions, 611 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:30:35,658 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 438 flow [2024-06-28 03:30:35,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-06-28 03:30:35,659 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2024-06-28 03:30:35,659 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 438 flow [2024-06-28 03:30:35,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:35,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:35,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:35,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:30:35,660 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:35,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:35,660 INFO L85 PathProgramCache]: Analyzing trace with hash 842038786, now seen corresponding path program 1 times [2024-06-28 03:30:35,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:35,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460719219] [2024-06-28 03:30:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:35,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:36,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460719219] [2024-06-28 03:30:36,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460719219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:36,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:36,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:30:36,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768934149] [2024-06-28 03:30:36,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:36,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:30:36,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:36,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:30:36,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:30:36,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:36,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:36,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:36,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:36,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:37,914 INFO L124 PetriNetUnfolderBase]: 9694/13755 cut-off events. [2024-06-28 03:30:37,914 INFO L125 PetriNetUnfolderBase]: For 42623/42623 co-relation queries the response was YES. [2024-06-28 03:30:37,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45860 conditions, 13755 events. 9694/13755 cut-off events. For 42623/42623 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 78210 event pairs, 4624 based on Foata normal form. 6/13557 useless extension candidates. Maximal degree in co-relation 45836. Up to 13112 conditions per place. [2024-06-28 03:30:38,000 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 85 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2024-06-28 03:30:38,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 110 transitions, 779 flow [2024-06-28 03:30:38,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:30:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:30:38,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 03:30:38,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-28 03:30:38,002 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 438 flow. Second operand 7 states and 175 transitions. [2024-06-28 03:30:38,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 110 transitions, 779 flow [2024-06-28 03:30:38,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 688 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:30:38,032 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 459 flow [2024-06-28 03:30:38,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=459, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2024-06-28 03:30:38,032 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2024-06-28 03:30:38,033 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 459 flow [2024-06-28 03:30:38,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:38,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:38,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:38,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:30:38,033 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:38,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:38,034 INFO L85 PathProgramCache]: Analyzing trace with hash -455683969, now seen corresponding path program 1 times [2024-06-28 03:30:38,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:38,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846129951] [2024-06-28 03:30:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:38,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:38,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:38,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846129951] [2024-06-28 03:30:38,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846129951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:38,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:38,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:30:38,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414728850] [2024-06-28 03:30:38,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:38,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:30:38,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:38,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:30:38,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:30:38,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:38,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:38,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:38,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:38,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:39,960 INFO L124 PetriNetUnfolderBase]: 9687/13846 cut-off events. [2024-06-28 03:30:39,960 INFO L125 PetriNetUnfolderBase]: For 52190/52190 co-relation queries the response was YES. [2024-06-28 03:30:39,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48936 conditions, 13846 events. 9687/13846 cut-off events. For 52190/52190 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 79388 event pairs, 4731 based on Foata normal form. 2/13694 useless extension candidates. Maximal degree in co-relation 48910. Up to 13154 conditions per place. [2024-06-28 03:30:40,031 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 78 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-06-28 03:30:40,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 703 flow [2024-06-28 03:30:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:30:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:30:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-28 03:30:40,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641509433962264 [2024-06-28 03:30:40,034 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 459 flow. Second operand 5 states and 123 transitions. [2024-06-28 03:30:40,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 703 flow [2024-06-28 03:30:40,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 96 transitions, 655 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:30:40,054 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 480 flow [2024-06-28 03:30:40,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2024-06-28 03:30:40,055 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-28 03:30:40,055 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 480 flow [2024-06-28 03:30:40,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:40,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:40,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:40,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:30:40,056 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:40,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:40,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1241299685, now seen corresponding path program 1 times [2024-06-28 03:30:40,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:40,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293887102] [2024-06-28 03:30:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:40,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:40,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:40,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293887102] [2024-06-28 03:30:40,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293887102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:40,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:40,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:30:40,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395451900] [2024-06-28 03:30:40,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:40,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:30:40,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:40,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:30:40,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:30:40,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:40,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:40,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:40,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:40,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:42,173 INFO L124 PetriNetUnfolderBase]: 9673/14096 cut-off events. [2024-06-28 03:30:42,174 INFO L125 PetriNetUnfolderBase]: For 66165/66165 co-relation queries the response was YES. [2024-06-28 03:30:42,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52180 conditions, 14096 events. 9673/14096 cut-off events. For 66165/66165 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 83759 event pairs, 4695 based on Foata normal form. 4/14080 useless extension candidates. Maximal degree in co-relation 52153. Up to 13118 conditions per place. [2024-06-28 03:30:42,251 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 83 selfloop transitions, 14 changer transitions 0/105 dead transitions. [2024-06-28 03:30:42,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 105 transitions, 760 flow [2024-06-28 03:30:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:30:42,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:30:42,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 03:30:42,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559748427672956 [2024-06-28 03:30:42,252 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 480 flow. Second operand 6 states and 145 transitions. [2024-06-28 03:30:42,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 105 transitions, 760 flow [2024-06-28 03:30:42,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 721 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 03:30:42,274 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 524 flow [2024-06-28 03:30:42,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=524, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-06-28 03:30:42,275 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2024-06-28 03:30:42,275 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 524 flow [2024-06-28 03:30:42,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:42,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:42,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:42,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:30:42,276 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:42,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1328997081, now seen corresponding path program 1 times [2024-06-28 03:30:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:42,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103534822] [2024-06-28 03:30:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:42,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:43,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:43,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103534822] [2024-06-28 03:30:43,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103534822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:43,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:43,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:30:43,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155924496] [2024-06-28 03:30:43,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:43,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:30:43,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:43,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:30:43,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:30:43,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:43,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 524 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:43,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:43,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:43,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:44,620 INFO L124 PetriNetUnfolderBase]: 11104/15575 cut-off events. [2024-06-28 03:30:44,620 INFO L125 PetriNetUnfolderBase]: For 99278/99370 co-relation queries the response was YES. [2024-06-28 03:30:44,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62896 conditions, 15575 events. 11104/15575 cut-off events. For 99278/99370 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 89446 event pairs, 3947 based on Foata normal form. 54/15540 useless extension candidates. Maximal degree in co-relation 62868. Up to 14309 conditions per place. [2024-06-28 03:30:44,726 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 94 selfloop transitions, 32 changer transitions 0/135 dead transitions. [2024-06-28 03:30:44,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 135 transitions, 1008 flow [2024-06-28 03:30:44,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:30:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:30:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-28 03:30:44,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-28 03:30:44,728 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 524 flow. Second operand 7 states and 189 transitions. [2024-06-28 03:30:44,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 135 transitions, 1008 flow [2024-06-28 03:30:44,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 955 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 03:30:44,757 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 604 flow [2024-06-28 03:30:44,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=604, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-06-28 03:30:44,757 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-06-28 03:30:44,757 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 604 flow [2024-06-28 03:30:44,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:44,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:44,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:44,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:30:44,758 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:44,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:44,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1328936631, now seen corresponding path program 2 times [2024-06-28 03:30:44,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:44,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988285581] [2024-06-28 03:30:44,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:44,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:45,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:45,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988285581] [2024-06-28 03:30:45,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988285581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:45,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:45,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:30:45,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149071054] [2024-06-28 03:30:45,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:45,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:30:45,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:45,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:30:45,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:30:45,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:30:45,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 604 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:45,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:45,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:30:45,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:47,208 INFO L124 PetriNetUnfolderBase]: 11217/15754 cut-off events. [2024-06-28 03:30:47,209 INFO L125 PetriNetUnfolderBase]: For 117614/117706 co-relation queries the response was YES. [2024-06-28 03:30:47,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65971 conditions, 15754 events. 11217/15754 cut-off events. For 117614/117706 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 90652 event pairs, 4727 based on Foata normal form. 87/15742 useless extension candidates. Maximal degree in co-relation 65942. Up to 14935 conditions per place. [2024-06-28 03:30:47,324 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 91 selfloop transitions, 31 changer transitions 0/131 dead transitions. [2024-06-28 03:30:47,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 131 transitions, 986 flow [2024-06-28 03:30:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:30:47,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:30:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 03:30:47,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49865229110512127 [2024-06-28 03:30:47,327 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 604 flow. Second operand 7 states and 185 transitions. [2024-06-28 03:30:47,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 131 transitions, 986 flow [2024-06-28 03:30:47,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 937 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 03:30:47,384 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 672 flow [2024-06-28 03:30:47,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=672, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-06-28 03:30:47,384 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-06-28 03:30:47,385 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 672 flow [2024-06-28 03:30:47,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:47,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:47,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:47,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:30:47,387 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:47,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:47,387 INFO L85 PathProgramCache]: Analyzing trace with hash 162975198, now seen corresponding path program 1 times [2024-06-28 03:30:47,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:47,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395204074] [2024-06-28 03:30:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:47,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:48,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:48,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395204074] [2024-06-28 03:30:48,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395204074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:48,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:48,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:30:48,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874169115] [2024-06-28 03:30:48,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:48,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:30:48,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:48,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:30:48,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:30:48,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:30:48,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 672 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:48,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:48,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:30:48,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:49,739 INFO L124 PetriNetUnfolderBase]: 11492/16052 cut-off events. [2024-06-28 03:30:49,739 INFO L125 PetriNetUnfolderBase]: For 132649/132655 co-relation queries the response was YES. [2024-06-28 03:30:49,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69351 conditions, 16052 events. 11492/16052 cut-off events. For 132649/132655 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 89629 event pairs, 5351 based on Foata normal form. 6/15964 useless extension candidates. Maximal degree in co-relation 69320. Up to 15573 conditions per place. [2024-06-28 03:30:49,838 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 99 selfloop transitions, 21 changer transitions 0/127 dead transitions. [2024-06-28 03:30:49,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 127 transitions, 1114 flow [2024-06-28 03:30:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:30:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:30:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 03:30:49,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46855345911949686 [2024-06-28 03:30:49,839 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 672 flow. Second operand 6 states and 149 transitions. [2024-06-28 03:30:49,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 127 transitions, 1114 flow [2024-06-28 03:30:49,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 127 transitions, 1033 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:30:49,923 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 738 flow [2024-06-28 03:30:49,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=738, PETRI_PLACES=88, PETRI_TRANSITIONS=101} [2024-06-28 03:30:49,924 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2024-06-28 03:30:49,924 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 738 flow [2024-06-28 03:30:49,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:49,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:49,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:49,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:30:49,925 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:49,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1120370957, now seen corresponding path program 1 times [2024-06-28 03:30:49,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:49,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747886610] [2024-06-28 03:30:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:49,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:50,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:50,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747886610] [2024-06-28 03:30:50,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747886610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:50,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:50,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:30:50,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516627610] [2024-06-28 03:30:50,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:50,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:30:50,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:50,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:30:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:30:50,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:30:50,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 738 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 03:30:50,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:50,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:30:50,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:52,961 INFO L124 PetriNetUnfolderBase]: 11550/16129 cut-off events. [2024-06-28 03:30:52,961 INFO L125 PetriNetUnfolderBase]: For 156314/156323 co-relation queries the response was YES. [2024-06-28 03:30:53,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72795 conditions, 16129 events. 11550/16129 cut-off events. For 156314/156323 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 89945 event pairs, 5055 based on Foata normal form. 8/16032 useless extension candidates. Maximal degree in co-relation 72763. Up to 15436 conditions per place. [2024-06-28 03:30:53,078 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 105 selfloop transitions, 44 changer transitions 0/156 dead transitions. [2024-06-28 03:30:53,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 156 transitions, 1269 flow [2024-06-28 03:30:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 03:30:53,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-28 03:30:53,079 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 738 flow. Second operand 8 states and 200 transitions. [2024-06-28 03:30:53,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 156 transitions, 1269 flow [2024-06-28 03:30:53,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 156 transitions, 1223 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 03:30:53,180 INFO L231 Difference]: Finished difference. Result has 95 places, 116 transitions, 941 flow [2024-06-28 03:30:53,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=941, PETRI_PLACES=95, PETRI_TRANSITIONS=116} [2024-06-28 03:30:53,181 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2024-06-28 03:30:53,181 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 116 transitions, 941 flow [2024-06-28 03:30:53,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 03:30:53,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:53,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:53,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:30:53,182 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:53,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:53,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1745473953, now seen corresponding path program 2 times [2024-06-28 03:30:53,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:53,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550288682] [2024-06-28 03:30:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:53,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:54,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:54,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550288682] [2024-06-28 03:30:54,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550288682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:54,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:54,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:30:54,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266464009] [2024-06-28 03:30:54,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:54,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:30:54,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:54,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:30:54,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:30:54,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:30:54,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 116 transitions, 941 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 03:30:54,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:54,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:30:54,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:55,849 INFO L124 PetriNetUnfolderBase]: 11627/16264 cut-off events. [2024-06-28 03:30:55,849 INFO L125 PetriNetUnfolderBase]: For 177559/177568 co-relation queries the response was YES. [2024-06-28 03:30:55,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76234 conditions, 16264 events. 11627/16264 cut-off events. For 177559/177568 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 90995 event pairs, 4567 based on Foata normal form. 8/16167 useless extension candidates. Maximal degree in co-relation 76199. Up to 15266 conditions per place. [2024-06-28 03:30:55,990 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 109 selfloop transitions, 55 changer transitions 0/171 dead transitions. [2024-06-28 03:30:55,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 171 transitions, 1585 flow [2024-06-28 03:30:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 03:30:55,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882075471698113 [2024-06-28 03:30:55,992 INFO L175 Difference]: Start difference. First operand has 95 places, 116 transitions, 941 flow. Second operand 8 states and 207 transitions. [2024-06-28 03:30:55,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 171 transitions, 1585 flow [2024-06-28 03:30:56,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 171 transitions, 1495 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 03:30:56,100 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 1118 flow [2024-06-28 03:30:56,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1118, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2024-06-28 03:30:56,100 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2024-06-28 03:30:56,100 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 1118 flow [2024-06-28 03:30:56,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 03:30:56,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:56,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:56,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:30:56,101 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:56,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:56,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1040591871, now seen corresponding path program 3 times [2024-06-28 03:30:56,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:56,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841984891] [2024-06-28 03:30:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:56,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841984891] [2024-06-28 03:30:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841984891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:57,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:57,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:30:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468358327] [2024-06-28 03:30:57,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:57,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:30:57,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:30:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:30:57,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:30:57,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 1118 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 03:30:57,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:57,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:30:57,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:30:58,910 INFO L124 PetriNetUnfolderBase]: 11612/16171 cut-off events. [2024-06-28 03:30:58,910 INFO L125 PetriNetUnfolderBase]: For 199260/199269 co-relation queries the response was YES. [2024-06-28 03:30:58,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78358 conditions, 16171 events. 11612/16171 cut-off events. For 199260/199269 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 89700 event pairs, 5067 based on Foata normal form. 8/16134 useless extension candidates. Maximal degree in co-relation 78321. Up to 15534 conditions per place. [2024-06-28 03:30:59,025 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 114 selfloop transitions, 44 changer transitions 0/165 dead transitions. [2024-06-28 03:30:59,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 165 transitions, 1547 flow [2024-06-28 03:30:59,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:30:59,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:30:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 03:30:59,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-28 03:30:59,026 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 1118 flow. Second operand 8 states and 200 transitions. [2024-06-28 03:30:59,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 165 transitions, 1547 flow [2024-06-28 03:30:59,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 165 transitions, 1432 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 03:30:59,193 INFO L231 Difference]: Finished difference. Result has 106 places, 125 transitions, 1122 flow [2024-06-28 03:30:59,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1122, PETRI_PLACES=106, PETRI_TRANSITIONS=125} [2024-06-28 03:30:59,194 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-28 03:30:59,194 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 125 transitions, 1122 flow [2024-06-28 03:30:59,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 03:30:59,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:30:59,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:30:59,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:30:59,195 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:30:59,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:30:59,195 INFO L85 PathProgramCache]: Analyzing trace with hash 174403038, now seen corresponding path program 2 times [2024-06-28 03:30:59,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:30:59,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104907282] [2024-06-28 03:30:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:30:59,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:30:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:30:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:30:59,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:30:59,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104907282] [2024-06-28 03:30:59,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104907282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:30:59,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:30:59,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:30:59,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990834065] [2024-06-28 03:30:59,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:30:59,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:30:59,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:30:59,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:30:59,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:30:59,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:30:59,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 125 transitions, 1122 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:30:59,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:30:59,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:30:59,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:01,511 INFO L124 PetriNetUnfolderBase]: 11605/16177 cut-off events. [2024-06-28 03:31:01,512 INFO L125 PetriNetUnfolderBase]: For 215896/215911 co-relation queries the response was YES. [2024-06-28 03:31:01,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79500 conditions, 16177 events. 11605/16177 cut-off events. For 215896/215911 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 89909 event pairs, 5043 based on Foata normal form. 12/16153 useless extension candidates. Maximal degree in co-relation 79460. Up to 15746 conditions per place. [2024-06-28 03:31:01,631 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 115 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2024-06-28 03:31:01,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 143 transitions, 1440 flow [2024-06-28 03:31:01,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:31:01,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:31:01,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 03:31:01,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2024-06-28 03:31:01,632 INFO L175 Difference]: Start difference. First operand has 106 places, 125 transitions, 1122 flow. Second operand 6 states and 141 transitions. [2024-06-28 03:31:01,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 143 transitions, 1440 flow [2024-06-28 03:31:01,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 143 transitions, 1312 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:01,791 INFO L231 Difference]: Finished difference. Result has 107 places, 125 transitions, 1045 flow [2024-06-28 03:31:01,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1045, PETRI_PLACES=107, PETRI_TRANSITIONS=125} [2024-06-28 03:31:01,792 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2024-06-28 03:31:01,792 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 125 transitions, 1045 flow [2024-06-28 03:31:01,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:01,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:01,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:01,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:31:01,792 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:01,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:01,792 INFO L85 PathProgramCache]: Analyzing trace with hash 691240800, now seen corresponding path program 1 times [2024-06-28 03:31:01,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:01,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672578139] [2024-06-28 03:31:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:01,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:02,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:02,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672578139] [2024-06-28 03:31:02,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672578139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:02,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:02,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:31:02,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131082179] [2024-06-28 03:31:02,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:02,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:31:02,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:02,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:31:02,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:31:02,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:02,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 125 transitions, 1045 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:02,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:02,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:02,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:04,030 INFO L124 PetriNetUnfolderBase]: 10226/14590 cut-off events. [2024-06-28 03:31:04,031 INFO L125 PetriNetUnfolderBase]: For 202594/202600 co-relation queries the response was YES. [2024-06-28 03:31:04,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71805 conditions, 14590 events. 10226/14590 cut-off events. For 202594/202600 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 84105 event pairs, 4290 based on Foata normal form. 6/14537 useless extension candidates. Maximal degree in co-relation 71764. Up to 13926 conditions per place. [2024-06-28 03:31:04,141 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 127 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2024-06-28 03:31:04,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 156 transitions, 1555 flow [2024-06-28 03:31:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:31:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:31:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 03:31:04,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748427672955975 [2024-06-28 03:31:04,143 INFO L175 Difference]: Start difference. First operand has 107 places, 125 transitions, 1045 flow. Second operand 6 states and 151 transitions. [2024-06-28 03:31:04,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 156 transitions, 1555 flow [2024-06-28 03:31:04,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 156 transitions, 1496 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:04,284 INFO L231 Difference]: Finished difference. Result has 108 places, 133 transitions, 1133 flow [2024-06-28 03:31:04,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1133, PETRI_PLACES=108, PETRI_TRANSITIONS=133} [2024-06-28 03:31:04,285 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2024-06-28 03:31:04,285 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 133 transitions, 1133 flow [2024-06-28 03:31:04,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:04,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:04,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:04,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:31:04,285 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:04,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:04,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1347876480, now seen corresponding path program 2 times [2024-06-28 03:31:04,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:04,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272352378] [2024-06-28 03:31:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:04,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:04,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:04,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272352378] [2024-06-28 03:31:04,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272352378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:04,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:04,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:31:04,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859595534] [2024-06-28 03:31:04,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:04,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:31:04,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:31:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:31:05,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:05,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 133 transitions, 1133 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:05,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:05,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:05,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:06,606 INFO L124 PetriNetUnfolderBase]: 10219/14582 cut-off events. [2024-06-28 03:31:06,606 INFO L125 PetriNetUnfolderBase]: For 227487/227493 co-relation queries the response was YES. [2024-06-28 03:31:06,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74909 conditions, 14582 events. 10219/14582 cut-off events. For 227487/227493 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 84166 event pairs, 4293 based on Foata normal form. 6/14528 useless extension candidates. Maximal degree in co-relation 74867. Up to 13919 conditions per place. [2024-06-28 03:31:06,719 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 122 selfloop transitions, 21 changer transitions 0/151 dead transitions. [2024-06-28 03:31:06,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 151 transitions, 1465 flow [2024-06-28 03:31:06,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:31:06,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:31:06,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 03:31:06,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2024-06-28 03:31:06,720 INFO L175 Difference]: Start difference. First operand has 108 places, 133 transitions, 1133 flow. Second operand 6 states and 146 transitions. [2024-06-28 03:31:06,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 151 transitions, 1465 flow [2024-06-28 03:31:06,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 151 transitions, 1362 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:06,869 INFO L231 Difference]: Finished difference. Result has 111 places, 133 transitions, 1081 flow [2024-06-28 03:31:06,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1081, PETRI_PLACES=111, PETRI_TRANSITIONS=133} [2024-06-28 03:31:06,869 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2024-06-28 03:31:06,869 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 133 transitions, 1081 flow [2024-06-28 03:31:06,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:06,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:06,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:06,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:31:06,870 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:06,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:06,870 INFO L85 PathProgramCache]: Analyzing trace with hash 756966406, now seen corresponding path program 1 times [2024-06-28 03:31:06,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:06,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439813215] [2024-06-28 03:31:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:06,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:07,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:07,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439813215] [2024-06-28 03:31:07,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439813215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:07,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:07,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:07,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569083101] [2024-06-28 03:31:07,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:07,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:07,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:07,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:07,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:07,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:07,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 133 transitions, 1081 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:07,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:07,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:07,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:09,485 INFO L124 PetriNetUnfolderBase]: 11669/16268 cut-off events. [2024-06-28 03:31:09,485 INFO L125 PetriNetUnfolderBase]: For 282008/282020 co-relation queries the response was YES. [2024-06-28 03:31:09,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84660 conditions, 16268 events. 11669/16268 cut-off events. For 282008/282020 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 90473 event pairs, 4988 based on Foata normal form. 12/16231 useless extension candidates. Maximal degree in co-relation 84617. Up to 15602 conditions per place. [2024-06-28 03:31:09,615 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 130 selfloop transitions, 52 changer transitions 0/189 dead transitions. [2024-06-28 03:31:09,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 189 transitions, 1886 flow [2024-06-28 03:31:09,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 03:31:09,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49326145552560646 [2024-06-28 03:31:09,617 INFO L175 Difference]: Start difference. First operand has 111 places, 133 transitions, 1081 flow. Second operand 7 states and 183 transitions. [2024-06-28 03:31:09,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 189 transitions, 1886 flow [2024-06-28 03:31:09,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 189 transitions, 1831 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:09,787 INFO L231 Difference]: Finished difference. Result has 115 places, 151 transitions, 1394 flow [2024-06-28 03:31:09,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1394, PETRI_PLACES=115, PETRI_TRANSITIONS=151} [2024-06-28 03:31:09,787 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-06-28 03:31:09,788 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 151 transitions, 1394 flow [2024-06-28 03:31:09,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:09,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:09,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:09,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:31:09,788 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:09,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:09,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1397219829, now seen corresponding path program 1 times [2024-06-28 03:31:09,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:09,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448264248] [2024-06-28 03:31:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:09,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:10,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:10,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448264248] [2024-06-28 03:31:10,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448264248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:10,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:10,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:31:10,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206732611] [2024-06-28 03:31:10,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:10,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:31:10,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:10,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:31:10,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:31:10,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:10,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 151 transitions, 1394 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:10,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:10,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:10,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:12,780 INFO L124 PetriNetUnfolderBase]: 11911/16655 cut-off events. [2024-06-28 03:31:12,780 INFO L125 PetriNetUnfolderBase]: For 325874/325877 co-relation queries the response was YES. [2024-06-28 03:31:12,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91781 conditions, 16655 events. 11911/16655 cut-off events. For 325874/325877 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 93430 event pairs, 4993 based on Foata normal form. 18/16628 useless extension candidates. Maximal degree in co-relation 91735. Up to 15500 conditions per place. [2024-06-28 03:31:12,936 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 148 selfloop transitions, 53 changer transitions 0/208 dead transitions. [2024-06-28 03:31:12,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 208 transitions, 2033 flow [2024-06-28 03:31:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:31:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:31:12,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 03:31:12,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834905660377358 [2024-06-28 03:31:12,938 INFO L175 Difference]: Start difference. First operand has 115 places, 151 transitions, 1394 flow. Second operand 8 states and 205 transitions. [2024-06-28 03:31:12,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 208 transitions, 2033 flow [2024-06-28 03:31:13,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 208 transitions, 1933 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:13,206 INFO L231 Difference]: Finished difference. Result has 122 places, 160 transitions, 1563 flow [2024-06-28 03:31:13,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1563, PETRI_PLACES=122, PETRI_TRANSITIONS=160} [2024-06-28 03:31:13,207 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 66 predicate places. [2024-06-28 03:31:13,207 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 160 transitions, 1563 flow [2024-06-28 03:31:13,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:13,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:13,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:13,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:31:13,207 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:13,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:13,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1537823138, now seen corresponding path program 2 times [2024-06-28 03:31:13,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:13,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104843618] [2024-06-28 03:31:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:13,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:13,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:13,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104843618] [2024-06-28 03:31:13,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104843618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:13,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:13,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:13,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376898468] [2024-06-28 03:31:13,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:13,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:13,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:13,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:13,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:14,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:14,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 160 transitions, 1563 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:14,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:14,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:14,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:15,948 INFO L124 PetriNetUnfolderBase]: 11994/16775 cut-off events. [2024-06-28 03:31:15,948 INFO L125 PetriNetUnfolderBase]: For 348257/348269 co-relation queries the response was YES. [2024-06-28 03:31:16,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93679 conditions, 16775 events. 11994/16775 cut-off events. For 348257/348269 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 94258 event pairs, 5032 based on Foata normal form. 12/16738 useless extension candidates. Maximal degree in co-relation 93630. Up to 16041 conditions per place. [2024-06-28 03:31:16,110 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 137 selfloop transitions, 58 changer transitions 0/202 dead transitions. [2024-06-28 03:31:16,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 202 transitions, 2327 flow [2024-06-28 03:31:16,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 03:31:16,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477088948787062 [2024-06-28 03:31:16,112 INFO L175 Difference]: Start difference. First operand has 122 places, 160 transitions, 1563 flow. Second operand 7 states and 177 transitions. [2024-06-28 03:31:16,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 202 transitions, 2327 flow [2024-06-28 03:31:16,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 202 transitions, 2237 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:16,434 INFO L231 Difference]: Finished difference. Result has 127 places, 170 transitions, 1747 flow [2024-06-28 03:31:16,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1747, PETRI_PLACES=127, PETRI_TRANSITIONS=170} [2024-06-28 03:31:16,435 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2024-06-28 03:31:16,435 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 170 transitions, 1747 flow [2024-06-28 03:31:16,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:16,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:16,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:16,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:31:16,435 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:16,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:16,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1537822766, now seen corresponding path program 1 times [2024-06-28 03:31:16,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:16,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058577651] [2024-06-28 03:31:16,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:16,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:17,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:17,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058577651] [2024-06-28 03:31:17,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058577651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:17,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:17,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:17,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437982224] [2024-06-28 03:31:17,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:17,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:17,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:17,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:17,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:17,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:17,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 170 transitions, 1747 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:17,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:17,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:17,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:19,186 INFO L124 PetriNetUnfolderBase]: 12026/16818 cut-off events. [2024-06-28 03:31:19,186 INFO L125 PetriNetUnfolderBase]: For 372679/372685 co-relation queries the response was YES. [2024-06-28 03:31:19,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94995 conditions, 16818 events. 12026/16818 cut-off events. For 372679/372685 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 94329 event pairs, 4973 based on Foata normal form. 5/16779 useless extension candidates. Maximal degree in co-relation 94944. Up to 16273 conditions per place. [2024-06-28 03:31:19,363 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 173 selfloop transitions, 31 changer transitions 0/211 dead transitions. [2024-06-28 03:31:19,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 211 transitions, 2449 flow [2024-06-28 03:31:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:19,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:19,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 03:31:19,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46900269541778977 [2024-06-28 03:31:19,364 INFO L175 Difference]: Start difference. First operand has 127 places, 170 transitions, 1747 flow. Second operand 7 states and 174 transitions. [2024-06-28 03:31:19,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 211 transitions, 2449 flow [2024-06-28 03:31:19,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 211 transitions, 2339 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:19,695 INFO L231 Difference]: Finished difference. Result has 131 places, 178 transitions, 1840 flow [2024-06-28 03:31:19,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1840, PETRI_PLACES=131, PETRI_TRANSITIONS=178} [2024-06-28 03:31:19,695 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 75 predicate places. [2024-06-28 03:31:19,695 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 178 transitions, 1840 flow [2024-06-28 03:31:19,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:19,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:19,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:19,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:31:19,696 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:19,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:19,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1734077381, now seen corresponding path program 2 times [2024-06-28 03:31:19,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:19,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638717436] [2024-06-28 03:31:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:19,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:20,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:20,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638717436] [2024-06-28 03:31:20,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638717436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:20,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:20,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:31:20,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918712971] [2024-06-28 03:31:20,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:20,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:31:20,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:20,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:31:20,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:31:20,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:20,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 178 transitions, 1840 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:20,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:20,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:20,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:22,596 INFO L124 PetriNetUnfolderBase]: 11987/16759 cut-off events. [2024-06-28 03:31:22,596 INFO L125 PetriNetUnfolderBase]: For 411023/411026 co-relation queries the response was YES. [2024-06-28 03:31:22,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97567 conditions, 16759 events. 11987/16759 cut-off events. For 411023/411026 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 93680 event pairs, 3627 based on Foata normal form. 18/16730 useless extension candidates. Maximal degree in co-relation 97515. Up to 14914 conditions per place. [2024-06-28 03:31:22,770 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 152 selfloop transitions, 61 changer transitions 0/220 dead transitions. [2024-06-28 03:31:22,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 220 transitions, 2384 flow [2024-06-28 03:31:22,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:22,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 03:31:22,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49326145552560646 [2024-06-28 03:31:22,771 INFO L175 Difference]: Start difference. First operand has 131 places, 178 transitions, 1840 flow. Second operand 7 states and 183 transitions. [2024-06-28 03:31:22,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 220 transitions, 2384 flow [2024-06-28 03:31:23,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 220 transitions, 2294 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:23,232 INFO L231 Difference]: Finished difference. Result has 135 places, 178 transitions, 1885 flow [2024-06-28 03:31:23,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1885, PETRI_PLACES=135, PETRI_TRANSITIONS=178} [2024-06-28 03:31:23,233 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 79 predicate places. [2024-06-28 03:31:23,233 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 178 transitions, 1885 flow [2024-06-28 03:31:23,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:23,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:23,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:23,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:31:23,233 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:23,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:23,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2076333439, now seen corresponding path program 3 times [2024-06-28 03:31:23,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:23,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340390372] [2024-06-28 03:31:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:23,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:24,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:24,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340390372] [2024-06-28 03:31:24,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340390372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:24,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:24,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:31:24,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820614278] [2024-06-28 03:31:24,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:24,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:31:24,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:24,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:31:24,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:31:24,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:24,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 178 transitions, 1885 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:24,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:24,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:24,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:26,108 INFO L124 PetriNetUnfolderBase]: 11948/16695 cut-off events. [2024-06-28 03:31:26,108 INFO L125 PetriNetUnfolderBase]: For 435679/435688 co-relation queries the response was YES. [2024-06-28 03:31:26,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98511 conditions, 16695 events. 11948/16695 cut-off events. For 435679/435688 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 93315 event pairs, 3025 based on Foata normal form. 19/16650 useless extension candidates. Maximal degree in co-relation 98457. Up to 14675 conditions per place. [2024-06-28 03:31:26,247 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 146 selfloop transitions, 63 changer transitions 0/216 dead transitions. [2024-06-28 03:31:26,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 216 transitions, 2419 flow [2024-06-28 03:31:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:26,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 03:31:26,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743935309973046 [2024-06-28 03:31:26,248 INFO L175 Difference]: Start difference. First operand has 135 places, 178 transitions, 1885 flow. Second operand 7 states and 176 transitions. [2024-06-28 03:31:26,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 216 transitions, 2419 flow [2024-06-28 03:31:26,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 216 transitions, 2257 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:31:26,457 INFO L231 Difference]: Finished difference. Result has 135 places, 179 transitions, 1872 flow [2024-06-28 03:31:26,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1872, PETRI_PLACES=135, PETRI_TRANSITIONS=179} [2024-06-28 03:31:26,458 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 79 predicate places. [2024-06-28 03:31:26,458 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 179 transitions, 1872 flow [2024-06-28 03:31:26,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:26,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:26,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:26,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:31:26,459 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:26,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:26,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1111527976, now seen corresponding path program 3 times [2024-06-28 03:31:26,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:26,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126474875] [2024-06-28 03:31:26,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:26,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:27,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:27,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126474875] [2024-06-28 03:31:27,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126474875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:27,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:27,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:27,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653834882] [2024-06-28 03:31:27,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:27,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:27,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:27,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:27,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:27,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:27,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 179 transitions, 1872 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:27,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:27,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:27,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:29,461 INFO L124 PetriNetUnfolderBase]: 11939/16762 cut-off events. [2024-06-28 03:31:29,461 INFO L125 PetriNetUnfolderBase]: For 437553/437580 co-relation queries the response was YES. [2024-06-28 03:31:29,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99076 conditions, 16762 events. 11939/16762 cut-off events. For 437553/437580 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 94635 event pairs, 5000 based on Foata normal form. 19/16661 useless extension candidates. Maximal degree in co-relation 99021. Up to 15964 conditions per place. [2024-06-28 03:31:29,620 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 140 selfloop transitions, 58 changer transitions 0/205 dead transitions. [2024-06-28 03:31:29,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 205 transitions, 2524 flow [2024-06-28 03:31:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:29,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 03:31:29,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609164420485175 [2024-06-28 03:31:29,623 INFO L175 Difference]: Start difference. First operand has 135 places, 179 transitions, 1872 flow. Second operand 7 states and 171 transitions. [2024-06-28 03:31:29,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 205 transitions, 2524 flow [2024-06-28 03:31:29,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 205 transitions, 2341 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:29,893 INFO L231 Difference]: Finished difference. Result has 137 places, 179 transitions, 1816 flow [2024-06-28 03:31:29,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1816, PETRI_PLACES=137, PETRI_TRANSITIONS=179} [2024-06-28 03:31:29,893 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2024-06-28 03:31:29,894 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 179 transitions, 1816 flow [2024-06-28 03:31:29,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:29,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:29,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:29,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:31:29,894 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:29,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:29,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1111528348, now seen corresponding path program 2 times [2024-06-28 03:31:29,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:29,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346405133] [2024-06-28 03:31:29,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:29,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:30,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:30,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346405133] [2024-06-28 03:31:30,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346405133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:30,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:30,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:30,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155048008] [2024-06-28 03:31:30,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:30,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:30,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:30,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:30,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:30,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 179 transitions, 1816 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:30,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:30,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:30,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:32,945 INFO L124 PetriNetUnfolderBase]: 11971/16811 cut-off events. [2024-06-28 03:31:32,946 INFO L125 PetriNetUnfolderBase]: For 462120/462135 co-relation queries the response was YES. [2024-06-28 03:31:33,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99840 conditions, 16811 events. 11971/16811 cut-off events. For 462120/462135 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 94839 event pairs, 4923 based on Foata normal form. 14/16719 useless extension candidates. Maximal degree in co-relation 99784. Up to 16177 conditions per place. [2024-06-28 03:31:33,119 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 168 selfloop transitions, 35 changer transitions 0/210 dead transitions. [2024-06-28 03:31:33,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 210 transitions, 2456 flow [2024-06-28 03:31:33,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 03:31:33,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501347708894879 [2024-06-28 03:31:33,120 INFO L175 Difference]: Start difference. First operand has 137 places, 179 transitions, 1816 flow. Second operand 7 states and 167 transitions. [2024-06-28 03:31:33,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 210 transitions, 2456 flow [2024-06-28 03:31:33,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 210 transitions, 2299 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:31:33,395 INFO L231 Difference]: Finished difference. Result has 138 places, 183 transitions, 1806 flow [2024-06-28 03:31:33,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1806, PETRI_PLACES=138, PETRI_TRANSITIONS=183} [2024-06-28 03:31:33,396 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 82 predicate places. [2024-06-28 03:31:33,396 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 183 transitions, 1806 flow [2024-06-28 03:31:33,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:33,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:33,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:33,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:31:33,396 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:33,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:33,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1111944058, now seen corresponding path program 3 times [2024-06-28 03:31:33,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:33,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167647752] [2024-06-28 03:31:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:33,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:34,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:34,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:34,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167647752] [2024-06-28 03:31:34,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167647752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:34,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:34,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:34,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538779142] [2024-06-28 03:31:34,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:34,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:34,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:34,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:34,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:34,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:31:34,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 183 transitions, 1806 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:34,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:34,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:31:34,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:36,813 INFO L124 PetriNetUnfolderBase]: 11957/16793 cut-off events. [2024-06-28 03:31:36,814 INFO L125 PetriNetUnfolderBase]: For 489490/489505 co-relation queries the response was YES. [2024-06-28 03:31:36,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100227 conditions, 16793 events. 11957/16793 cut-off events. For 489490/489505 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 94830 event pairs, 4923 based on Foata normal form. 14/16701 useless extension candidates. Maximal degree in co-relation 100172. Up to 16165 conditions per place. [2024-06-28 03:31:37,025 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 164 selfloop transitions, 36 changer transitions 0/207 dead transitions. [2024-06-28 03:31:37,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 207 transitions, 2266 flow [2024-06-28 03:31:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 03:31:37,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393530997304582 [2024-06-28 03:31:37,028 INFO L175 Difference]: Start difference. First operand has 138 places, 183 transitions, 1806 flow. Second operand 7 states and 163 transitions. [2024-06-28 03:31:37,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 207 transitions, 2266 flow [2024-06-28 03:31:37,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 207 transitions, 2101 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:37,646 INFO L231 Difference]: Finished difference. Result has 140 places, 183 transitions, 1722 flow [2024-06-28 03:31:37,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1722, PETRI_PLACES=140, PETRI_TRANSITIONS=183} [2024-06-28 03:31:37,647 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 84 predicate places. [2024-06-28 03:31:37,647 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 183 transitions, 1722 flow [2024-06-28 03:31:37,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:37,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:37,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:37,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:31:37,648 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:37,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:37,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1365873950, now seen corresponding path program 1 times [2024-06-28 03:31:37,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:37,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908818898] [2024-06-28 03:31:37,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:37,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:38,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:38,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908818898] [2024-06-28 03:31:38,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908818898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:38,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:38,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:38,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22805791] [2024-06-28 03:31:38,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:38,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:38,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:38,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:38,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:38,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:38,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 183 transitions, 1722 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:38,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:38,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:38,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:40,500 INFO L124 PetriNetUnfolderBase]: 10578/15266 cut-off events. [2024-06-28 03:31:40,500 INFO L125 PetriNetUnfolderBase]: For 447813/447813 co-relation queries the response was YES. [2024-06-28 03:31:40,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90268 conditions, 15266 events. 10578/15266 cut-off events. For 447813/447813 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 89635 event pairs, 4216 based on Foata normal form. 2/15122 useless extension candidates. Maximal degree in co-relation 90212. Up to 14427 conditions per place. [2024-06-28 03:31:40,631 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 189 selfloop transitions, 18 changer transitions 0/215 dead transitions. [2024-06-28 03:31:40,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 215 transitions, 2266 flow [2024-06-28 03:31:40,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 03:31:40,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582210242587601 [2024-06-28 03:31:40,632 INFO L175 Difference]: Start difference. First operand has 140 places, 183 transitions, 1722 flow. Second operand 7 states and 170 transitions. [2024-06-28 03:31:40,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 215 transitions, 2266 flow [2024-06-28 03:31:41,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 215 transitions, 2177 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:31:41,042 INFO L231 Difference]: Finished difference. Result has 141 places, 187 transitions, 1744 flow [2024-06-28 03:31:41,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1744, PETRI_PLACES=141, PETRI_TRANSITIONS=187} [2024-06-28 03:31:41,042 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2024-06-28 03:31:41,042 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 187 transitions, 1744 flow [2024-06-28 03:31:41,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:41,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:41,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:41,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:31:41,043 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:41,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:41,043 INFO L85 PathProgramCache]: Analyzing trace with hash 934581154, now seen corresponding path program 2 times [2024-06-28 03:31:41,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:41,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810479369] [2024-06-28 03:31:41,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:41,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:41,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:41,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810479369] [2024-06-28 03:31:41,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810479369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:41,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:41,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:41,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790006282] [2024-06-28 03:31:41,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:41,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:41,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:41,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:41,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:41,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 187 transitions, 1744 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:41,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:41,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:41,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:43,845 INFO L124 PetriNetUnfolderBase]: 10594/15221 cut-off events. [2024-06-28 03:31:43,845 INFO L125 PetriNetUnfolderBase]: For 484712/484715 co-relation queries the response was YES. [2024-06-28 03:31:43,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93340 conditions, 15221 events. 10594/15221 cut-off events. For 484712/484715 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 89267 event pairs, 4214 based on Foata normal form. 4/15114 useless extension candidates. Maximal degree in co-relation 93283. Up to 14401 conditions per place. [2024-06-28 03:31:43,984 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 179 selfloop transitions, 35 changer transitions 0/222 dead transitions. [2024-06-28 03:31:43,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 222 transitions, 2484 flow [2024-06-28 03:31:43,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:43,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 03:31:43,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46630727762803237 [2024-06-28 03:31:43,985 INFO L175 Difference]: Start difference. First operand has 141 places, 187 transitions, 1744 flow. Second operand 7 states and 173 transitions. [2024-06-28 03:31:43,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 222 transitions, 2484 flow [2024-06-28 03:31:44,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 222 transitions, 2403 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:44,313 INFO L231 Difference]: Finished difference. Result has 143 places, 195 transitions, 1882 flow [2024-06-28 03:31:44,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1882, PETRI_PLACES=143, PETRI_TRANSITIONS=195} [2024-06-28 03:31:44,313 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 87 predicate places. [2024-06-28 03:31:44,313 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 195 transitions, 1882 flow [2024-06-28 03:31:44,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:44,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:44,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:44,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:31:44,314 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:44,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:44,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1365869114, now seen corresponding path program 1 times [2024-06-28 03:31:44,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:44,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835249247] [2024-06-28 03:31:44,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:44,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:45,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:45,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835249247] [2024-06-28 03:31:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835249247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:45,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:45,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:45,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240161581] [2024-06-28 03:31:45,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:45,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:45,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:45,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:45,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 195 transitions, 1882 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:45,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:45,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:45,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:47,409 INFO L124 PetriNetUnfolderBase]: 10626/15247 cut-off events. [2024-06-28 03:31:47,410 INFO L125 PetriNetUnfolderBase]: For 527985/527988 co-relation queries the response was YES. [2024-06-28 03:31:47,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96719 conditions, 15247 events. 10626/15247 cut-off events. For 527985/527988 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 89008 event pairs, 4190 based on Foata normal form. 4/15133 useless extension candidates. Maximal degree in co-relation 96661. Up to 14417 conditions per place. [2024-06-28 03:31:47,579 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 194 selfloop transitions, 31 changer transitions 0/233 dead transitions. [2024-06-28 03:31:47,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 233 transitions, 2650 flow [2024-06-28 03:31:47,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 03:31:47,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743935309973046 [2024-06-28 03:31:47,580 INFO L175 Difference]: Start difference. First operand has 143 places, 195 transitions, 1882 flow. Second operand 7 states and 176 transitions. [2024-06-28 03:31:47,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 233 transitions, 2650 flow [2024-06-28 03:31:47,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 233 transitions, 2560 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:47,955 INFO L231 Difference]: Finished difference. Result has 147 places, 203 transitions, 1999 flow [2024-06-28 03:31:47,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1999, PETRI_PLACES=147, PETRI_TRANSITIONS=203} [2024-06-28 03:31:47,956 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 91 predicate places. [2024-06-28 03:31:47,956 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 203 transitions, 1999 flow [2024-06-28 03:31:47,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:47,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:47,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:47,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:31:47,957 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:47,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:47,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1134220064, now seen corresponding path program 2 times [2024-06-28 03:31:47,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:47,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338170943] [2024-06-28 03:31:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:47,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:48,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:48,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338170943] [2024-06-28 03:31:48,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338170943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:48,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:48,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:48,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129140565] [2024-06-28 03:31:48,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:48,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:48,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:48,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:48,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:48,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:48,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 203 transitions, 1999 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:48,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:48,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:48,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:50,775 INFO L124 PetriNetUnfolderBase]: 10658/15302 cut-off events. [2024-06-28 03:31:50,775 INFO L125 PetriNetUnfolderBase]: For 562771/562777 co-relation queries the response was YES. [2024-06-28 03:31:50,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99572 conditions, 15302 events. 10658/15302 cut-off events. For 562771/562777 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 89441 event pairs, 4161 based on Foata normal form. 8/15196 useless extension candidates. Maximal degree in co-relation 99512. Up to 14446 conditions per place. [2024-06-28 03:31:50,942 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 191 selfloop transitions, 35 changer transitions 0/234 dead transitions. [2024-06-28 03:31:50,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 234 transitions, 2707 flow [2024-06-28 03:31:50,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 03:31:50,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46630727762803237 [2024-06-28 03:31:50,943 INFO L175 Difference]: Start difference. First operand has 147 places, 203 transitions, 1999 flow. Second operand 7 states and 173 transitions. [2024-06-28 03:31:50,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 234 transitions, 2707 flow [2024-06-28 03:31:51,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 234 transitions, 2623 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 03:31:51,395 INFO L231 Difference]: Finished difference. Result has 151 places, 207 transitions, 2064 flow [2024-06-28 03:31:51,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2064, PETRI_PLACES=151, PETRI_TRANSITIONS=207} [2024-06-28 03:31:51,395 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 95 predicate places. [2024-06-28 03:31:51,395 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 207 transitions, 2064 flow [2024-06-28 03:31:51,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:51,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:51,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:51,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:31:51,396 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:51,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:51,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1111712674, now seen corresponding path program 3 times [2024-06-28 03:31:51,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:51,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802988869] [2024-06-28 03:31:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:51,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:52,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:52,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802988869] [2024-06-28 03:31:52,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802988869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:52,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:52,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:52,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078890656] [2024-06-28 03:31:52,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:52,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:52,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:52,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:52,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:52,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:52,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 207 transitions, 2064 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:52,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:52,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:52,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:54,622 INFO L124 PetriNetUnfolderBase]: 10651/15290 cut-off events. [2024-06-28 03:31:54,623 INFO L125 PetriNetUnfolderBase]: For 590804/590807 co-relation queries the response was YES. [2024-06-28 03:31:54,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100471 conditions, 15290 events. 10651/15290 cut-off events. For 590804/590807 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 89327 event pairs, 4210 based on Foata normal form. 2/15176 useless extension candidates. Maximal degree in co-relation 100409. Up to 14478 conditions per place. [2024-06-28 03:31:54,751 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 186 selfloop transitions, 35 changer transitions 0/229 dead transitions. [2024-06-28 03:31:54,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 229 transitions, 2562 flow [2024-06-28 03:31:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 03:31:54,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-28 03:31:54,752 INFO L175 Difference]: Start difference. First operand has 151 places, 207 transitions, 2064 flow. Second operand 7 states and 168 transitions. [2024-06-28 03:31:54,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 229 transitions, 2562 flow [2024-06-28 03:31:55,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 229 transitions, 2403 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 03:31:55,113 INFO L231 Difference]: Finished difference. Result has 153 places, 207 transitions, 1984 flow [2024-06-28 03:31:55,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1984, PETRI_PLACES=153, PETRI_TRANSITIONS=207} [2024-06-28 03:31:55,114 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 97 predicate places. [2024-06-28 03:31:55,114 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 207 transitions, 1984 flow [2024-06-28 03:31:55,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:55,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:55,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:55,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:31:55,114 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:55,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:55,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1111950010, now seen corresponding path program 3 times [2024-06-28 03:31:55,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:55,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45228144] [2024-06-28 03:31:55,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:55,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:31:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:31:55,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:31:55,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45228144] [2024-06-28 03:31:55,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45228144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:31:55,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:31:55,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:31:55,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132726647] [2024-06-28 03:31:55,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:31:55,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:31:55,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:31:55,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:31:55,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:31:55,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:31:55,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 207 transitions, 1984 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:55,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:31:55,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:31:55,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:31:58,030 INFO L124 PetriNetUnfolderBase]: 10637/15275 cut-off events. [2024-06-28 03:31:58,030 INFO L125 PetriNetUnfolderBase]: For 618990/618996 co-relation queries the response was YES. [2024-06-28 03:31:58,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100959 conditions, 15275 events. 10637/15275 cut-off events. For 618990/618996 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 89332 event pairs, 4161 based on Foata normal form. 8/15169 useless extension candidates. Maximal degree in co-relation 100896. Up to 14425 conditions per place. [2024-06-28 03:31:58,193 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 187 selfloop transitions, 36 changer transitions 0/231 dead transitions. [2024-06-28 03:31:58,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 231 transitions, 2490 flow [2024-06-28 03:31:58,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:31:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:31:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 03:31:58,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555256064690027 [2024-06-28 03:31:58,195 INFO L175 Difference]: Start difference. First operand has 153 places, 207 transitions, 1984 flow. Second operand 7 states and 169 transitions. [2024-06-28 03:31:58,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 231 transitions, 2490 flow [2024-06-28 03:31:58,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 231 transitions, 2350 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 03:31:58,719 INFO L231 Difference]: Finished difference. Result has 153 places, 207 transitions, 1925 flow [2024-06-28 03:31:58,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1925, PETRI_PLACES=153, PETRI_TRANSITIONS=207} [2024-06-28 03:31:58,720 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 97 predicate places. [2024-06-28 03:31:58,720 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 207 transitions, 1925 flow [2024-06-28 03:31:58,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:31:58,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:31:58,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:31:58,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:31:58,720 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:31:58,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:31:58,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1111958938, now seen corresponding path program 1 times [2024-06-28 03:31:58,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:31:58,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274998854] [2024-06-28 03:31:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:31:58,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:31:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:00,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:00,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274998854] [2024-06-28 03:32:00,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274998854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:00,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:00,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:00,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184824494] [2024-06-28 03:32:00,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:00,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:00,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:00,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:00,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:00,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-28 03:32:00,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 207 transitions, 1925 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 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 03:32:00,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:00,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-28 03:32:00,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:02,467 INFO L124 PetriNetUnfolderBase]: 10625/15253 cut-off events. [2024-06-28 03:32:02,467 INFO L125 PetriNetUnfolderBase]: For 647560/647560 co-relation queries the response was YES. [2024-06-28 03:32:02,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101560 conditions, 15253 events. 10625/15253 cut-off events. For 647560/647560 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 88833 event pairs, 4150 based on Foata normal form. 4/15143 useless extension candidates. Maximal degree in co-relation 101497. Up to 14483 conditions per place. [2024-06-28 03:32:02,603 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 209 selfloop transitions, 17 changer transitions 0/234 dead transitions. [2024-06-28 03:32:02,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 234 transitions, 2511 flow [2024-06-28 03:32:02,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:32:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:32:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 03:32:02,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.444743935309973 [2024-06-28 03:32:02,605 INFO L175 Difference]: Start difference. First operand has 153 places, 207 transitions, 1925 flow. Second operand 7 states and 165 transitions. [2024-06-28 03:32:02,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 234 transitions, 2511 flow [2024-06-28 03:32:02,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 234 transitions, 2420 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 03:32:02,949 INFO L231 Difference]: Finished difference. Result has 154 places, 210 transitions, 1956 flow [2024-06-28 03:32:02,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1956, PETRI_PLACES=154, PETRI_TRANSITIONS=210} [2024-06-28 03:32:02,949 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 98 predicate places. [2024-06-28 03:32:02,949 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 210 transitions, 1956 flow [2024-06-28 03:32:02,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 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 03:32:02,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:02,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:02,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:32:02,950 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:02,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:02,950 INFO L85 PathProgramCache]: Analyzing trace with hash 213107873, now seen corresponding path program 1 times [2024-06-28 03:32:02,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:02,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999408040] [2024-06-28 03:32:02,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:02,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:04,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:04,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999408040] [2024-06-28 03:32:04,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999408040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:04,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:04,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:32:04,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517236523] [2024-06-28 03:32:04,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:04,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:32:04,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:04,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:32:04,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:32:04,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-28 03:32:04,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 210 transitions, 1956 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:04,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:04,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-28 03:32:04,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:06,136 INFO L124 PetriNetUnfolderBase]: 10214/15003 cut-off events. [2024-06-28 03:32:06,136 INFO L125 PetriNetUnfolderBase]: For 676489/676717 co-relation queries the response was YES. [2024-06-28 03:32:06,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102162 conditions, 15003 events. 10214/15003 cut-off events. For 676489/676717 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 91046 event pairs, 4011 based on Foata normal form. 1/14734 useless extension candidates. Maximal degree in co-relation 102098. Up to 13856 conditions per place. [2024-06-28 03:32:06,275 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 191 selfloop transitions, 12 changer transitions 0/226 dead transitions. [2024-06-28 03:32:06,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 226 transitions, 2467 flow [2024-06-28 03:32:06,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:32:06,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:32:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 03:32:06,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308176100628931 [2024-06-28 03:32:06,276 INFO L175 Difference]: Start difference. First operand has 154 places, 210 transitions, 1956 flow. Second operand 6 states and 137 transitions. [2024-06-28 03:32:06,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 226 transitions, 2467 flow [2024-06-28 03:32:06,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 226 transitions, 2367 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 03:32:06,735 INFO L231 Difference]: Finished difference. Result has 156 places, 216 transitions, 1979 flow [2024-06-28 03:32:06,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1979, PETRI_PLACES=156, PETRI_TRANSITIONS=216} [2024-06-28 03:32:06,736 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 100 predicate places. [2024-06-28 03:32:06,736 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 216 transitions, 1979 flow [2024-06-28 03:32:06,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:06,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:06,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:06,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:32:06,737 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:06,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2121154848, now seen corresponding path program 1 times [2024-06-28 03:32:06,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:06,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145499130] [2024-06-28 03:32:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:06,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:07,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145499130] [2024-06-28 03:32:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145499130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:07,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:07,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:07,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570676529] [2024-06-28 03:32:07,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:07,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:07,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:07,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:07,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:07,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:07,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 216 transitions, 1979 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:07,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:07,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:07,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:10,374 INFO L124 PetriNetUnfolderBase]: 12126/17030 cut-off events. [2024-06-28 03:32:10,375 INFO L125 PetriNetUnfolderBase]: For 840668/840677 co-relation queries the response was YES. [2024-06-28 03:32:10,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120619 conditions, 17030 events. 12126/17030 cut-off events. For 840668/840677 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 96054 event pairs, 4787 based on Foata normal form. 12/17034 useless extension candidates. Maximal degree in co-relation 120553. Up to 15782 conditions per place. [2024-06-28 03:32:10,562 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 175 selfloop transitions, 94 changer transitions 0/276 dead transitions. [2024-06-28 03:32:10,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 276 transitions, 3153 flow [2024-06-28 03:32:10,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 03:32:10,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2024-06-28 03:32:10,563 INFO L175 Difference]: Start difference. First operand has 156 places, 216 transitions, 1979 flow. Second operand 8 states and 210 transitions. [2024-06-28 03:32:10,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 276 transitions, 3153 flow [2024-06-28 03:32:11,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 276 transitions, 3082 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 03:32:11,235 INFO L231 Difference]: Finished difference. Result has 162 places, 231 transitions, 2413 flow [2024-06-28 03:32:11,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2413, PETRI_PLACES=162, PETRI_TRANSITIONS=231} [2024-06-28 03:32:11,236 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 106 predicate places. [2024-06-28 03:32:11,236 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 231 transitions, 2413 flow [2024-06-28 03:32:11,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:11,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:11,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:11,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:32:11,236 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:11,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:11,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1278314273, now seen corresponding path program 1 times [2024-06-28 03:32:11,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:11,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737830152] [2024-06-28 03:32:11,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:11,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:12,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:12,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737830152] [2024-06-28 03:32:12,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737830152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:12,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:12,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:32:12,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481967086] [2024-06-28 03:32:12,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:12,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:32:12,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:12,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:32:12,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:32:12,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:12,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 231 transitions, 2413 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:12,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:12,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:12,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:14,763 INFO L124 PetriNetUnfolderBase]: 12204/17129 cut-off events. [2024-06-28 03:32:14,763 INFO L125 PetriNetUnfolderBase]: For 905061/905070 co-relation queries the response was YES. [2024-06-28 03:32:14,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127275 conditions, 17129 events. 12204/17129 cut-off events. For 905061/905070 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 96584 event pairs, 4883 based on Foata normal form. 10/17131 useless extension candidates. Maximal degree in co-relation 127207. Up to 16273 conditions per place. [2024-06-28 03:32:14,948 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 197 selfloop transitions, 74 changer transitions 0/278 dead transitions. [2024-06-28 03:32:14,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 278 transitions, 3531 flow [2024-06-28 03:32:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:32:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:32:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 03:32:14,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48247978436657685 [2024-06-28 03:32:14,949 INFO L175 Difference]: Start difference. First operand has 162 places, 231 transitions, 2413 flow. Second operand 7 states and 179 transitions. [2024-06-28 03:32:14,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 278 transitions, 3531 flow [2024-06-28 03:32:15,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 278 transitions, 3383 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-06-28 03:32:15,427 INFO L231 Difference]: Finished difference. Result has 167 places, 244 transitions, 2653 flow [2024-06-28 03:32:15,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2653, PETRI_PLACES=167, PETRI_TRANSITIONS=244} [2024-06-28 03:32:15,427 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 111 predicate places. [2024-06-28 03:32:15,427 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 244 transitions, 2653 flow [2024-06-28 03:32:15,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:15,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:15,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:15,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:32:15,428 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:15,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:15,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1994817439, now seen corresponding path program 2 times [2024-06-28 03:32:15,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:15,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806091135] [2024-06-28 03:32:15,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:15,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:16,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:16,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806091135] [2024-06-28 03:32:16,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806091135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:16,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:16,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:32:16,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020617714] [2024-06-28 03:32:16,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:16,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:32:16,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:16,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:32:16,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:32:16,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:16,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 244 transitions, 2653 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:16,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:16,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:16,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:18,993 INFO L124 PetriNetUnfolderBase]: 12190/17111 cut-off events. [2024-06-28 03:32:18,993 INFO L125 PetriNetUnfolderBase]: For 936356/936365 co-relation queries the response was YES. [2024-06-28 03:32:19,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127510 conditions, 17111 events. 12190/17111 cut-off events. For 936356/936365 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 96493 event pairs, 4883 based on Foata normal form. 10/17113 useless extension candidates. Maximal degree in co-relation 127439. Up to 16261 conditions per place. [2024-06-28 03:32:19,160 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 198 selfloop transitions, 70 changer transitions 0/275 dead transitions. [2024-06-28 03:32:19,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 275 transitions, 3561 flow [2024-06-28 03:32:19,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:32:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:32:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 03:32:19,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743935309973046 [2024-06-28 03:32:19,161 INFO L175 Difference]: Start difference. First operand has 167 places, 244 transitions, 2653 flow. Second operand 7 states and 176 transitions. [2024-06-28 03:32:19,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 275 transitions, 3561 flow [2024-06-28 03:32:19,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 275 transitions, 3434 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 03:32:19,883 INFO L231 Difference]: Finished difference. Result has 170 places, 244 transitions, 2678 flow [2024-06-28 03:32:19,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2526, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2678, PETRI_PLACES=170, PETRI_TRANSITIONS=244} [2024-06-28 03:32:19,884 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 114 predicate places. [2024-06-28 03:32:19,884 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 244 transitions, 2678 flow [2024-06-28 03:32:19,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:19,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:19,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:19,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:32:19,885 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:19,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:19,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2130420438, now seen corresponding path program 2 times [2024-06-28 03:32:19,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:19,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248677236] [2024-06-28 03:32:19,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:19,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:32:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:32:20,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:32:20,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248677236] [2024-06-28 03:32:20,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248677236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:32:20,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:32:20,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:32:20,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475156209] [2024-06-28 03:32:20,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:32:20,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:32:20,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:32:20,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:32:20,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:32:20,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-28 03:32:20,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 244 transitions, 2678 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:20,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:32:20,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-28 03:32:20,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:32:23,718 INFO L124 PetriNetUnfolderBase]: 12448/17470 cut-off events. [2024-06-28 03:32:23,719 INFO L125 PetriNetUnfolderBase]: For 995775/995784 co-relation queries the response was YES. [2024-06-28 03:32:23,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131238 conditions, 17470 events. 12448/17470 cut-off events. For 995775/995784 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 98599 event pairs, 4811 based on Foata normal form. 12/17474 useless extension candidates. Maximal degree in co-relation 131167. Up to 16009 conditions per place. [2024-06-28 03:32:23,894 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 186 selfloop transitions, 107 changer transitions 0/300 dead transitions. [2024-06-28 03:32:23,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 300 transitions, 4041 flow [2024-06-28 03:32:23,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:32:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:32:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 03:32:23,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858490566037736 [2024-06-28 03:32:23,896 INFO L175 Difference]: Start difference. First operand has 170 places, 244 transitions, 2678 flow. Second operand 8 states and 206 transitions. [2024-06-28 03:32:23,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 300 transitions, 4041 flow [2024-06-28 03:32:24,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 300 transitions, 3912 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:32:24,714 INFO L231 Difference]: Finished difference. Result has 175 places, 258 transitions, 3003 flow [2024-06-28 03:32:24,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2549, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3003, PETRI_PLACES=175, PETRI_TRANSITIONS=258} [2024-06-28 03:32:24,714 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 119 predicate places. [2024-06-28 03:32:24,715 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 258 transitions, 3003 flow [2024-06-28 03:32:24,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:32:24,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:32:24,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:32:24,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:32:24,715 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:32:24,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:32:24,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2000378002, now seen corresponding path program 3 times [2024-06-28 03:32:24,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:32:24,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140460404] [2024-06-28 03:32:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:32:24,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:32:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat