./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/thin002_rmo.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/thin002_rmo.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/thin002_rmo.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_rmo.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 04:33:52,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:33:52,830 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:33:52,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:33:52,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:33:52,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:33:52,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:33:52,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:33:52,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:33:52,881 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:33:52,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:33:52,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:33:52,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:33:52,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:33:52,882 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:33:52,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:33:52,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:33:52,883 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:33:52,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:33:52,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:33:52,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:33:52,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:33:52,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:33:52,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:33:52,885 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:33:52,885 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:33:52,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:33:52,886 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:33:52,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:33:52,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:33:52,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:33:52,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:33:52,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:33:52,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:33:52,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:33:52,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:33:52,888 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:33:52,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:33:52,888 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:33:52,888 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:33:52,888 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:33:52,889 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:33:52,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:33:52,889 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:33:53,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:33:53,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:33:53,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:33:53,071 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:33:53,071 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:33:53,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_rmo.i [2024-06-28 04:33:53,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:33:54,174 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:33:54,175 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_rmo.i [2024-06-28 04:33:54,186 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2959cb03c/b3311b0609c9418a97c69ed4be51a629/FLAG2a0188292 [2024-06-28 04:33:54,195 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2959cb03c/b3311b0609c9418a97c69ed4be51a629 [2024-06-28 04:33:54,198 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:33:54,199 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:33:54,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_rmo.yml/witness.yml [2024-06-28 04:33:54,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:33:54,425 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:33:54,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:33:54,427 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:33:54,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:33:54,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:33:54" (1/2) ... [2024-06-28 04:33:54,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336d233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:33:54, skipping insertion in model container [2024-06-28 04:33:54,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:33:54" (1/2) ... [2024-06-28 04:33:54,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c23866b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:33:54, skipping insertion in model container [2024-06-28 04:33:54,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:33:54" (2/2) ... [2024-06-28 04:33:54,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336d233 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:54, skipping insertion in model container [2024-06-28 04:33:54,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:33:54" (2/2) ... [2024-06-28 04:33:54,434 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:33:54,570 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:33:54,571 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || a$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd1 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd1 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && a$w_buff0 == 0) && a$w_buff0_used == (_Bool)0) && a$w_buff1 == 0) && a$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$w_buff0_used == (_Bool)0) [2024-06-28 04:33:54,571 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || a$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd1 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd1 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && a$w_buff0 == 0) && a$w_buff0_used == (_Bool)0) && a$w_buff1 == 0) && a$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$w_buff0_used == (_Bool)0) [2024-06-28 04:33:54,572 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || a$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd1 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd1 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && a$w_buff0 == 0) && a$w_buff0_used == (_Bool)0) && a$w_buff1 == 0) && a$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$w_buff0_used == (_Bool)0) [2024-06-28 04:33:54,572 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || a$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd1 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd1 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && a$w_buff0 == 0) && a$w_buff0_used == (_Bool)0) && a$w_buff1 == 0) && a$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$w_buff0_used == (_Bool)0) [2024-06-28 04:33:54,572 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:33:54,573 INFO L106 edCorrectnessWitness]: ghost_update [L861-L861] multithreaded = 1; [2024-06-28 04:33:54,606 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:33:54,872 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:33:54,883 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 04:33:55,054 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:33:55,096 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:33:55,096 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55 WrapperNode [2024-06-28 04:33:55,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:33:55,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:33:55,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:33:55,098 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:33:55,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (1/1) ... [2024-06-28 04:33:55,131 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (1/1) ... [2024-06-28 04:33:55,172 INFO L138 Inliner]: procedures = 176, calls = 97, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 248 [2024-06-28 04:33:55,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:33:55,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:33:55,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:33:55,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:33:55,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (1/1) ... [2024-06-28 04:33:55,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (1/1) ... [2024-06-28 04:33:55,200 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (1/1) ... [2024-06-28 04:33:55,217 INFO L175 MemorySlicer]: Split 47 memory accesses to 2 slices as follows [2, 45]. 96 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-28 04:33:55,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (1/1) ... [2024-06-28 04:33:55,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (1/1) ... [2024-06-28 04:33:55,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (1/1) ... [2024-06-28 04:33:55,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (1/1) ... [2024-06-28 04:33:55,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (1/1) ... [2024-06-28 04:33:55,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (1/1) ... [2024-06-28 04:33:55,249 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:33:55,255 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:33:55,255 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:33:55,255 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:33:55,256 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (1/1) ... [2024-06-28 04:33:55,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:33:55,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:33:55,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 04:33:55,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 04:33:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 04:33:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 04:33:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 04:33:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 04:33:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:33:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:33:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:33:55,325 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:33:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:33:55,325 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:33:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:33:55,325 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:33:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 04:33:55,326 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 04:33:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:33:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 04:33:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:33:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:33:55,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:33:55,328 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 04:33:55,450 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:33:55,452 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:33:55,883 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:33:55,883 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:33:56,228 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:33:56,229 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:33:56,229 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:33:56 BoogieIcfgContainer [2024-06-28 04:33:56,229 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:33:56,231 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:33:56,232 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:33:56,234 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:33:56,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:33:54" (1/4) ... [2024-06-28 04:33:56,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db7334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:33:56, skipping insertion in model container [2024-06-28 04:33:56,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:33:54" (2/4) ... [2024-06-28 04:33:56,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db7334 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:33:56, skipping insertion in model container [2024-06-28 04:33:56,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:33:55" (3/4) ... [2024-06-28 04:33:56,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db7334 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:33:56, skipping insertion in model container [2024-06-28 04:33:56,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:33:56" (4/4) ... [2024-06-28 04:33:56,238 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_rmo.i [2024-06-28 04:33:56,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:33:56,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 04:33:56,252 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:33:56,311 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:33:56,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-28 04:33:56,370 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-28 04:33:56,370 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:33:56,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:33:56,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-28 04:33:56,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-28 04:33:56,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:33:56,394 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;@29292c49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:33:56,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 04:33:56,400 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:33:56,400 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 04:33:56,400 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:33:56,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:56,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:33:56,402 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 04:33:56,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash 712802681, now seen corresponding path program 1 times [2024-06-28 04:33:56,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:56,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192218896] [2024-06-28 04:33:56,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:56,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:58,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:58,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192218896] [2024-06-28 04:33:58,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192218896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:58,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:58,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:33:58,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927854698] [2024-06-28 04:33:58,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:58,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:33:58,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:58,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:33:58,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:33:58,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-28 04:33:58,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:58,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:58,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-28 04:33:58,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:59,766 INFO L124 PetriNetUnfolderBase]: 4406/6336 cut-off events. [2024-06-28 04:33:59,766 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-06-28 04:33:59,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12682 conditions, 6336 events. 4406/6336 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 34622 event pairs, 3188 based on Foata normal form. 1/6203 useless extension candidates. Maximal degree in co-relation 12669. Up to 6114 conditions per place. [2024-06-28 04:33:59,828 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 45 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-28 04:33:59,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 243 flow [2024-06-28 04:33:59,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:33:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:33:59,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-28 04:33:59,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-28 04:33:59,838 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 99 transitions. [2024-06-28 04:33:59,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 243 flow [2024-06-28 04:33:59,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 236 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 04:33:59,843 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-28 04:33:59,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-28 04:33:59,846 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-28 04:33:59,846 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-28 04:33:59,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:59,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:59,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:59,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:33:59,847 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 04:33:59,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2104152756, now seen corresponding path program 1 times [2024-06-28 04:33:59,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:59,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570975826] [2024-06-28 04:33:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:59,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:02,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570975826] [2024-06-28 04:34:02,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570975826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:02,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:02,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 04:34:02,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561385687] [2024-06-28 04:34:02,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:02,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 04:34:02,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:02,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 04:34:02,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 04:34:02,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-28 04:34:02,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 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 04:34:02,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:02,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-28 04:34:02,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:03,496 INFO L124 PetriNetUnfolderBase]: 4396/6307 cut-off events. [2024-06-28 04:34:03,497 INFO L125 PetriNetUnfolderBase]: For 1199/1209 co-relation queries the response was YES. [2024-06-28 04:34:03,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14561 conditions, 6307 events. 4396/6307 cut-off events. For 1199/1209 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 33955 event pairs, 2767 based on Foata normal form. 10/6313 useless extension candidates. Maximal degree in co-relation 14549. Up to 6073 conditions per place. [2024-06-28 04:34:03,535 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 58 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-06-28 04:34:03,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 78 transitions, 347 flow [2024-06-28 04:34:03,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:34:03,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:34:03,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-06-28 04:34:03,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2024-06-28 04:34:03,537 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 131 transitions. [2024-06-28 04:34:03,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 78 transitions, 347 flow [2024-06-28 04:34:03,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:34:03,542 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 183 flow [2024-06-28 04:34:03,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-06-28 04:34:03,543 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-06-28 04:34:03,543 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 183 flow [2024-06-28 04:34:03,543 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 04:34:03,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:03,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:03,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:34:03,544 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 04:34:03,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:03,544 INFO L85 PathProgramCache]: Analyzing trace with hash 804227852, now seen corresponding path program 1 times [2024-06-28 04:34:03,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:03,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740013406] [2024-06-28 04:34:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:03,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:06,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740013406] [2024-06-28 04:34:06,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740013406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:06,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:06,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 04:34:06,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767023324] [2024-06-28 04:34:06,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:06,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 04:34:06,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:06,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 04:34:06,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 04:34:06,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-28 04:34:06,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:06,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:06,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-28 04:34:06,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:07,847 INFO L124 PetriNetUnfolderBase]: 5573/7932 cut-off events. [2024-06-28 04:34:07,847 INFO L125 PetriNetUnfolderBase]: For 4121/4137 co-relation queries the response was YES. [2024-06-28 04:34:07,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20459 conditions, 7932 events. 5573/7932 cut-off events. For 4121/4137 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 42847 event pairs, 2919 based on Foata normal form. 16/7945 useless extension candidates. Maximal degree in co-relation 20445. Up to 7638 conditions per place. [2024-06-28 04:34:07,890 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 80 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2024-06-28 04:34:07,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 103 transitions, 523 flow [2024-06-28 04:34:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:34:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:34:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-06-28 04:34:07,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-28 04:34:07,892 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 183 flow. Second operand 5 states and 159 transitions. [2024-06-28 04:34:07,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 103 transitions, 523 flow [2024-06-28 04:34:07,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 492 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 04:34:07,896 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 279 flow [2024-06-28 04:34:07,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=279, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-06-28 04:34:07,897 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-06-28 04:34:07,897 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 279 flow [2024-06-28 04:34:07,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:07,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:07,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:07,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:34:07,898 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 04:34:07,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:07,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1489040551, now seen corresponding path program 1 times [2024-06-28 04:34:07,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:07,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995788647] [2024-06-28 04:34:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:07,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:10,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:10,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995788647] [2024-06-28 04:34:10,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995788647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:10,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:10,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:34:10,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857465900] [2024-06-28 04:34:10,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:10,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:34:10,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:10,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:34:10,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:34:10,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-28 04:34:10,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:10,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:10,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-28 04:34:10,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:12,527 INFO L124 PetriNetUnfolderBase]: 5557/7912 cut-off events. [2024-06-28 04:34:12,527 INFO L125 PetriNetUnfolderBase]: For 7469/7509 co-relation queries the response was YES. [2024-06-28 04:34:12,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22651 conditions, 7912 events. 5557/7912 cut-off events. For 7469/7509 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 42866 event pairs, 2329 based on Foata normal form. 32/7941 useless extension candidates. Maximal degree in co-relation 22634. Up to 7560 conditions per place. [2024-06-28 04:34:12,568 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 89 selfloop transitions, 16 changer transitions 0/115 dead transitions. [2024-06-28 04:34:12,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 115 transitions, 621 flow [2024-06-28 04:34:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:34:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:34:12,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-28 04:34:12,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709876543209876 [2024-06-28 04:34:12,572 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 279 flow. Second operand 6 states and 185 transitions. [2024-06-28 04:34:12,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 115 transitions, 621 flow [2024-06-28 04:34:12,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 115 transitions, 613 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 04:34:12,577 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 331 flow [2024-06-28 04:34:12,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-06-28 04:34:12,579 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-06-28 04:34:12,579 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 331 flow [2024-06-28 04:34:12,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:12,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:12,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:12,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:34:12,580 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 04:34:12,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:12,581 INFO L85 PathProgramCache]: Analyzing trace with hash -846042458, now seen corresponding path program 1 times [2024-06-28 04:34:12,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:12,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632969305] [2024-06-28 04:34:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:12,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:14,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:14,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632969305] [2024-06-28 04:34:14,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632969305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:14,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:14,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:34:14,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130011921] [2024-06-28 04:34:14,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:14,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:34:14,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:14,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:34:14,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:34:14,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:34:14,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:14,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:14,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:34:14,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:16,706 INFO L124 PetriNetUnfolderBase]: 6976/9833 cut-off events. [2024-06-28 04:34:16,706 INFO L125 PetriNetUnfolderBase]: For 14047/14073 co-relation queries the response was YES. [2024-06-28 04:34:16,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29910 conditions, 9833 events. 6976/9833 cut-off events. For 14047/14073 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 53041 event pairs, 3445 based on Foata normal form. 13/9842 useless extension candidates. Maximal degree in co-relation 29889. Up to 9532 conditions per place. [2024-06-28 04:34:16,759 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 79 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-06-28 04:34:16,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 99 transitions, 633 flow [2024-06-28 04:34:16,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:34:16,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:34:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-28 04:34:16,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 04:34:16,762 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 331 flow. Second operand 5 states and 129 transitions. [2024-06-28 04:34:16,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 99 transitions, 633 flow [2024-06-28 04:34:16,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 99 transitions, 585 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 04:34:16,767 INFO L231 Difference]: Finished difference. Result has 71 places, 76 transitions, 404 flow [2024-06-28 04:34:16,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=404, PETRI_PLACES=71, PETRI_TRANSITIONS=76} [2024-06-28 04:34:16,768 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2024-06-28 04:34:16,768 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 76 transitions, 404 flow [2024-06-28 04:34:16,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:16,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:16,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:16,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:34:16,769 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 04:34:16,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1475310781, now seen corresponding path program 1 times [2024-06-28 04:34:16,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:16,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611918646] [2024-06-28 04:34:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:16,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:19,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:19,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:19,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611918646] [2024-06-28 04:34:19,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611918646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:19,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:19,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:34:19,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557123798] [2024-06-28 04:34:19,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:19,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:34:19,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:19,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:34:19,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:34:20,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-28 04:34:20,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 76 transitions, 404 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 04:34:20,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:20,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-28 04:34:20,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:22,458 INFO L124 PetriNetUnfolderBase]: 6834/9676 cut-off events. [2024-06-28 04:34:22,458 INFO L125 PetriNetUnfolderBase]: For 21497/21647 co-relation queries the response was YES. [2024-06-28 04:34:22,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32970 conditions, 9676 events. 6834/9676 cut-off events. For 21497/21647 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 53110 event pairs, 3028 based on Foata normal form. 49/9697 useless extension candidates. Maximal degree in co-relation 32946. Up to 9201 conditions per place. [2024-06-28 04:34:22,510 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 91 selfloop transitions, 33 changer transitions 0/135 dead transitions. [2024-06-28 04:34:22,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 135 transitions, 870 flow [2024-06-28 04:34:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:34:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:34:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-28 04:34:22,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 04:34:22,512 INFO L175 Difference]: Start difference. First operand has 71 places, 76 transitions, 404 flow. Second operand 7 states and 198 transitions. [2024-06-28 04:34:22,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 135 transitions, 870 flow [2024-06-28 04:34:22,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 135 transitions, 858 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 04:34:22,520 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 541 flow [2024-06-28 04:34:22,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=541, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2024-06-28 04:34:22,521 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-06-28 04:34:22,521 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 541 flow [2024-06-28 04:34:22,521 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 04:34:22,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:22,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:22,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:34:22,522 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 04:34:22,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:22,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1267857553, now seen corresponding path program 1 times [2024-06-28 04:34:22,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:22,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487625744] [2024-06-28 04:34:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:22,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:25,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:25,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487625744] [2024-06-28 04:34:25,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487625744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:25,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:25,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:34:25,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793264868] [2024-06-28 04:34:25,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:25,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:34:25,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:25,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:34:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:34:25,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:34:25,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 541 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:25,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:25,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:34:25,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:28,003 INFO L124 PetriNetUnfolderBase]: 7076/9983 cut-off events. [2024-06-28 04:34:28,004 INFO L125 PetriNetUnfolderBase]: For 28215/28270 co-relation queries the response was YES. [2024-06-28 04:34:28,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35599 conditions, 9983 events. 7076/9983 cut-off events. For 28215/28270 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 54018 event pairs, 3210 based on Foata normal form. 27/10004 useless extension candidates. Maximal degree in co-relation 35572. Up to 9552 conditions per place. [2024-06-28 04:34:28,056 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 114 selfloop transitions, 28 changer transitions 0/150 dead transitions. [2024-06-28 04:34:28,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 150 transitions, 1104 flow [2024-06-28 04:34:28,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:34:28,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:34:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-28 04:34:28,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 04:34:28,058 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 541 flow. Second operand 7 states and 189 transitions. [2024-06-28 04:34:28,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 150 transitions, 1104 flow [2024-06-28 04:34:28,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 150 transitions, 1046 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 04:34:28,075 INFO L231 Difference]: Finished difference. Result has 83 places, 101 transitions, 706 flow [2024-06-28 04:34:28,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=706, PETRI_PLACES=83, PETRI_TRANSITIONS=101} [2024-06-28 04:34:28,076 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 26 predicate places. [2024-06-28 04:34:28,076 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 101 transitions, 706 flow [2024-06-28 04:34:28,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:28,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:28,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:28,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:34:28,076 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 04:34:28,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:28,077 INFO L85 PathProgramCache]: Analyzing trace with hash 300393185, now seen corresponding path program 2 times [2024-06-28 04:34:28,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:28,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516617847] [2024-06-28 04:34:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:28,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:31,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:31,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516617847] [2024-06-28 04:34:31,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516617847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:31,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:31,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:34:31,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220478346] [2024-06-28 04:34:31,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:31,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:34:31,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:31,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:34:31,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:34:31,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-28 04:34:31,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 101 transitions, 706 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 04:34:31,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:31,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-28 04:34:31,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:33,449 INFO L124 PetriNetUnfolderBase]: 6838/9726 cut-off events. [2024-06-28 04:34:33,449 INFO L125 PetriNetUnfolderBase]: For 40750/41422 co-relation queries the response was YES. [2024-06-28 04:34:33,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38194 conditions, 9726 events. 6838/9726 cut-off events. For 40750/41422 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 54516 event pairs, 2900 based on Foata normal form. 81/9529 useless extension candidates. Maximal degree in co-relation 38163. Up to 9183 conditions per place. [2024-06-28 04:34:33,509 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 101 selfloop transitions, 38 changer transitions 0/153 dead transitions. [2024-06-28 04:34:33,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 153 transitions, 1164 flow [2024-06-28 04:34:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:34:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:34:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-28 04:34:33,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-06-28 04:34:33,512 INFO L175 Difference]: Start difference. First operand has 83 places, 101 transitions, 706 flow. Second operand 7 states and 190 transitions. [2024-06-28 04:34:33,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 153 transitions, 1164 flow [2024-06-28 04:34:33,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 153 transitions, 1114 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 04:34:33,539 INFO L231 Difference]: Finished difference. Result has 87 places, 109 transitions, 824 flow [2024-06-28 04:34:33,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=824, PETRI_PLACES=87, PETRI_TRANSITIONS=109} [2024-06-28 04:34:33,540 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-06-28 04:34:33,540 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 109 transitions, 824 flow [2024-06-28 04:34:33,540 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 04:34:33,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:33,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:33,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:34:33,541 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:33,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1940161269, now seen corresponding path program 3 times [2024-06-28 04:34:33,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:33,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70135341] [2024-06-28 04:34:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:33,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:36,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:36,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70135341] [2024-06-28 04:34:36,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70135341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:36,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:36,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:34:36,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379756345] [2024-06-28 04:34:36,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:36,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:34:36,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:36,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:34:36,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:34:36,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-28 04:34:36,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 109 transitions, 824 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 04:34:36,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:36,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-28 04:34:36,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:38,850 INFO L124 PetriNetUnfolderBase]: 6808/9683 cut-off events. [2024-06-28 04:34:38,850 INFO L125 PetriNetUnfolderBase]: For 45928/46507 co-relation queries the response was YES. [2024-06-28 04:34:38,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38745 conditions, 9683 events. 6808/9683 cut-off events. For 45928/46507 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 54266 event pairs, 2900 based on Foata normal form. 79/9493 useless extension candidates. Maximal degree in co-relation 38713. Up to 9086 conditions per place. [2024-06-28 04:34:38,920 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 90 selfloop transitions, 44 changer transitions 0/148 dead transitions. [2024-06-28 04:34:38,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 148 transitions, 1188 flow [2024-06-28 04:34:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:34:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:34:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-28 04:34:38,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216049382716049 [2024-06-28 04:34:38,922 INFO L175 Difference]: Start difference. First operand has 87 places, 109 transitions, 824 flow. Second operand 6 states and 169 transitions. [2024-06-28 04:34:38,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 148 transitions, 1188 flow [2024-06-28 04:34:38,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 148 transitions, 1072 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 04:34:38,966 INFO L231 Difference]: Finished difference. Result has 89 places, 109 transitions, 820 flow [2024-06-28 04:34:38,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=820, PETRI_PLACES=89, PETRI_TRANSITIONS=109} [2024-06-28 04:34:38,967 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-06-28 04:34:38,967 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 109 transitions, 820 flow [2024-06-28 04:34:38,967 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 04:34:38,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:38,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:38,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:34:38,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:38,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:38,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1939923933, now seen corresponding path program 2 times [2024-06-28 04:34:38,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:38,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270235330] [2024-06-28 04:34:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:38,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:41,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:41,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270235330] [2024-06-28 04:34:41,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270235330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:41,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:41,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:34:41,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148652629] [2024-06-28 04:34:41,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:41,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:34:41,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:41,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:34:41,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:34:41,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:34:41,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 109 transitions, 820 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:41,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:41,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:34:41,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:43,958 INFO L124 PetriNetUnfolderBase]: 7152/10117 cut-off events. [2024-06-28 04:34:43,958 INFO L125 PetriNetUnfolderBase]: For 47874/48170 co-relation queries the response was YES. [2024-06-28 04:34:43,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40051 conditions, 10117 events. 7152/10117 cut-off events. For 47874/48170 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 54782 event pairs, 3230 based on Foata normal form. 65/10169 useless extension candidates. Maximal degree in co-relation 40018. Up to 9646 conditions per place. [2024-06-28 04:34:44,029 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 110 selfloop transitions, 32 changer transitions 0/150 dead transitions. [2024-06-28 04:34:44,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 150 transitions, 1293 flow [2024-06-28 04:34:44,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:34:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:34:44,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-28 04:34:44,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 04:34:44,031 INFO L175 Difference]: Start difference. First operand has 89 places, 109 transitions, 820 flow. Second operand 6 states and 159 transitions. [2024-06-28 04:34:44,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 150 transitions, 1293 flow [2024-06-28 04:34:44,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 150 transitions, 1191 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 04:34:44,069 INFO L231 Difference]: Finished difference. Result has 91 places, 115 transitions, 864 flow [2024-06-28 04:34:44,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=864, PETRI_PLACES=91, PETRI_TRANSITIONS=115} [2024-06-28 04:34:44,070 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-06-28 04:34:44,070 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 115 transitions, 864 flow [2024-06-28 04:34:44,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:44,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:44,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:44,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:34:44,071 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 04:34:44,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:44,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1392704411, now seen corresponding path program 3 times [2024-06-28 04:34:44,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:44,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142429033] [2024-06-28 04:34:44,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:44,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:46,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:46,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142429033] [2024-06-28 04:34:46,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142429033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:46,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:46,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:34:46,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679041687] [2024-06-28 04:34:46,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:46,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:34:46,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:34:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:34:46,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:34:46,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 115 transitions, 864 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:46,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:46,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:34:46,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:49,125 INFO L124 PetriNetUnfolderBase]: 7143/10094 cut-off events. [2024-06-28 04:34:49,125 INFO L125 PetriNetUnfolderBase]: For 46563/46641 co-relation queries the response was YES. [2024-06-28 04:34:49,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39999 conditions, 10094 events. 7143/10094 cut-off events. For 46563/46641 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 54463 event pairs, 3208 based on Foata normal form. 42/10130 useless extension candidates. Maximal degree in co-relation 39964. Up to 9637 conditions per place. [2024-06-28 04:34:49,179 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 110 selfloop transitions, 33 changer transitions 0/151 dead transitions. [2024-06-28 04:34:49,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 151 transitions, 1241 flow [2024-06-28 04:34:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:34:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:34:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-28 04:34:49,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49691358024691357 [2024-06-28 04:34:49,181 INFO L175 Difference]: Start difference. First operand has 91 places, 115 transitions, 864 flow. Second operand 6 states and 161 transitions. [2024-06-28 04:34:49,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 151 transitions, 1241 flow [2024-06-28 04:34:49,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 151 transitions, 1180 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 04:34:49,223 INFO L231 Difference]: Finished difference. Result has 95 places, 115 transitions, 885 flow [2024-06-28 04:34:49,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=885, PETRI_PLACES=95, PETRI_TRANSITIONS=115} [2024-06-28 04:34:49,223 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-06-28 04:34:49,223 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 115 transitions, 885 flow [2024-06-28 04:34:49,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:49,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:49,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:49,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:34:49,224 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 04:34:49,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1939915005, now seen corresponding path program 1 times [2024-06-28 04:34:49,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:49,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770291829] [2024-06-28 04:34:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:49,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:51,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:51,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770291829] [2024-06-28 04:34:51,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770291829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:51,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:51,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:34:51,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124149644] [2024-06-28 04:34:51,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:51,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:34:51,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:51,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:34:51,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:34:51,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:34:51,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 115 transitions, 885 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:51,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:51,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:34:51,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:53,838 INFO L124 PetriNetUnfolderBase]: 7128/10076 cut-off events. [2024-06-28 04:34:53,839 INFO L125 PetriNetUnfolderBase]: For 53733/53825 co-relation queries the response was YES. [2024-06-28 04:34:53,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40647 conditions, 10076 events. 7128/10076 cut-off events. For 53733/53825 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 54701 event pairs, 3074 based on Foata normal form. 35/10107 useless extension candidates. Maximal degree in co-relation 40610. Up to 9700 conditions per place. [2024-06-28 04:34:53,896 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 128 selfloop transitions, 15 changer transitions 0/151 dead transitions. [2024-06-28 04:34:53,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 151 transitions, 1280 flow [2024-06-28 04:34:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:34:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:34:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 04:34:53,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-28 04:34:53,898 INFO L175 Difference]: Start difference. First operand has 95 places, 115 transitions, 885 flow. Second operand 6 states and 154 transitions. [2024-06-28 04:34:53,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 151 transitions, 1280 flow [2024-06-28 04:34:53,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 151 transitions, 1215 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 04:34:53,937 INFO L231 Difference]: Finished difference. Result has 96 places, 118 transitions, 892 flow [2024-06-28 04:34:53,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=892, PETRI_PLACES=96, PETRI_TRANSITIONS=118} [2024-06-28 04:34:53,938 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 39 predicate places. [2024-06-28 04:34:53,938 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 118 transitions, 892 flow [2024-06-28 04:34:53,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:53,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:53,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:53,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:34:53,939 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:34:53,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:53,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1788151535, now seen corresponding path program 1 times [2024-06-28 04:34:53,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:53,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691920769] [2024-06-28 04:34:53,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:53,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:57,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:57,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691920769] [2024-06-28 04:34:57,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691920769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:57,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:57,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:57,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038518896] [2024-06-28 04:34:57,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:57,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:57,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:57,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:57,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:57,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:34:57,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 118 transitions, 892 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 04:34:57,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:57,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:34:57,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:59,962 INFO L124 PetriNetUnfolderBase]: 7155/10121 cut-off events. [2024-06-28 04:34:59,962 INFO L125 PetriNetUnfolderBase]: For 55767/55844 co-relation queries the response was YES. [2024-06-28 04:34:59,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41916 conditions, 10121 events. 7155/10121 cut-off events. For 55767/55844 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 54871 event pairs, 3023 based on Foata normal form. 41/10157 useless extension candidates. Maximal degree in co-relation 41879. Up to 9488 conditions per place. [2024-06-28 04:35:00,026 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 142 selfloop transitions, 50 changer transitions 0/200 dead transitions. [2024-06-28 04:35:00,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 200 transitions, 1653 flow [2024-06-28 04:35:00,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:00,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:00,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-06-28 04:35:00,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-28 04:35:00,027 INFO L175 Difference]: Start difference. First operand has 96 places, 118 transitions, 892 flow. Second operand 8 states and 220 transitions. [2024-06-28 04:35:00,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 200 transitions, 1653 flow [2024-06-28 04:35:00,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 200 transitions, 1607 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 04:35:00,081 INFO L231 Difference]: Finished difference. Result has 102 places, 137 transitions, 1159 flow [2024-06-28 04:35:00,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1159, PETRI_PLACES=102, PETRI_TRANSITIONS=137} [2024-06-28 04:35:00,081 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 45 predicate places. [2024-06-28 04:35:00,082 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 137 transitions, 1159 flow [2024-06-28 04:35:00,082 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 04:35:00,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:00,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:00,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:35:00,082 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 04:35:00,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:00,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1510157457, now seen corresponding path program 2 times [2024-06-28 04:35:00,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:00,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811597672] [2024-06-28 04:35:00,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:00,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:03,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:03,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811597672] [2024-06-28 04:35:03,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811597672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:03,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:03,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:03,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641413617] [2024-06-28 04:35:03,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:03,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:03,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:03,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:03,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:03,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:35:03,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 137 transitions, 1159 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 04:35:03,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:03,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:35:03,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:06,157 INFO L124 PetriNetUnfolderBase]: 7218/10227 cut-off events. [2024-06-28 04:35:06,157 INFO L125 PetriNetUnfolderBase]: For 68784/68859 co-relation queries the response was YES. [2024-06-28 04:35:06,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45233 conditions, 10227 events. 7218/10227 cut-off events. For 68784/68859 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 55556 event pairs, 3023 based on Foata normal form. 41/10263 useless extension candidates. Maximal degree in co-relation 45193. Up to 9679 conditions per place. [2024-06-28 04:35:06,223 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 169 selfloop transitions, 45 changer transitions 0/222 dead transitions. [2024-06-28 04:35:06,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 222 transitions, 1950 flow [2024-06-28 04:35:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:35:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:35:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-28 04:35:06,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-28 04:35:06,225 INFO L175 Difference]: Start difference. First operand has 102 places, 137 transitions, 1159 flow. Second operand 10 states and 264 transitions. [2024-06-28 04:35:06,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 222 transitions, 1950 flow [2024-06-28 04:35:06,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 222 transitions, 1863 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 04:35:06,283 INFO L231 Difference]: Finished difference. Result has 110 places, 147 transitions, 1300 flow [2024-06-28 04:35:06,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1300, PETRI_PLACES=110, PETRI_TRANSITIONS=147} [2024-06-28 04:35:06,284 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 53 predicate places. [2024-06-28 04:35:06,284 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 147 transitions, 1300 flow [2024-06-28 04:35:06,284 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 04:35:06,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:06,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:06,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:35:06,284 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 04:35:06,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:06,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1510151877, now seen corresponding path program 3 times [2024-06-28 04:35:06,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:06,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990899851] [2024-06-28 04:35:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:06,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:09,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:09,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990899851] [2024-06-28 04:35:09,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990899851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:09,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:09,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:09,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629087808] [2024-06-28 04:35:09,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:09,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:09,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:09,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:35:09,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 147 transitions, 1300 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 04:35:09,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:09,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:35:09,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:12,115 INFO L124 PetriNetUnfolderBase]: 7209/10215 cut-off events. [2024-06-28 04:35:12,115 INFO L125 PetriNetUnfolderBase]: For 76667/76742 co-relation queries the response was YES. [2024-06-28 04:35:12,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46093 conditions, 10215 events. 7209/10215 cut-off events. For 76667/76742 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 55462 event pairs, 3023 based on Foata normal form. 41/10251 useless extension candidates. Maximal degree in co-relation 46050. Up to 9670 conditions per place. [2024-06-28 04:35:12,184 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 149 selfloop transitions, 44 changer transitions 0/201 dead transitions. [2024-06-28 04:35:12,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 201 transitions, 1821 flow [2024-06-28 04:35:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:12,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 04:35:12,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 04:35:12,186 INFO L175 Difference]: Start difference. First operand has 110 places, 147 transitions, 1300 flow. Second operand 8 states and 213 transitions. [2024-06-28 04:35:12,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 201 transitions, 1821 flow [2024-06-28 04:35:12,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 201 transitions, 1736 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 04:35:12,272 INFO L231 Difference]: Finished difference. Result has 113 places, 147 transitions, 1314 flow [2024-06-28 04:35:12,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1314, PETRI_PLACES=113, PETRI_TRANSITIONS=147} [2024-06-28 04:35:12,273 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 56 predicate places. [2024-06-28 04:35:12,273 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 147 transitions, 1314 flow [2024-06-28 04:35:12,273 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 04:35:12,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:12,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:12,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:35:12,273 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 04:35:12,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:12,273 INFO L85 PathProgramCache]: Analyzing trace with hash -8098283, now seen corresponding path program 4 times [2024-06-28 04:35:12,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:12,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121987820] [2024-06-28 04:35:12,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:12,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:15,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:15,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121987820] [2024-06-28 04:35:15,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121987820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:15,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:15,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:15,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625625910] [2024-06-28 04:35:15,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:15,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:15,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:15,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:15,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:15,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:35:15,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 147 transitions, 1314 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 04:35:15,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:15,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:35:15,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:18,146 INFO L124 PetriNetUnfolderBase]: 7236/10274 cut-off events. [2024-06-28 04:35:18,146 INFO L125 PetriNetUnfolderBase]: For 87207/87745 co-relation queries the response was YES. [2024-06-28 04:35:18,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47224 conditions, 10274 events. 7236/10274 cut-off events. For 87207/87745 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 55981 event pairs, 3055 based on Foata normal form. 136/10397 useless extension candidates. Maximal degree in co-relation 47179. Up to 9610 conditions per place. [2024-06-28 04:35:18,207 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 152 selfloop transitions, 59 changer transitions 0/219 dead transitions. [2024-06-28 04:35:18,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 219 transitions, 2043 flow [2024-06-28 04:35:18,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:35:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:35:18,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 04:35:18,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49176954732510286 [2024-06-28 04:35:18,209 INFO L175 Difference]: Start difference. First operand has 113 places, 147 transitions, 1314 flow. Second operand 9 states and 239 transitions. [2024-06-28 04:35:18,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 219 transitions, 2043 flow [2024-06-28 04:35:18,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 219 transitions, 1955 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 04:35:18,276 INFO L231 Difference]: Finished difference. Result has 116 places, 153 transitions, 1437 flow [2024-06-28 04:35:18,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1437, PETRI_PLACES=116, PETRI_TRANSITIONS=153} [2024-06-28 04:35:18,276 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 59 predicate places. [2024-06-28 04:35:18,276 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 153 transitions, 1437 flow [2024-06-28 04:35:18,277 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 04:35:18,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:18,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:18,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:35:18,277 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:18,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:18,277 INFO L85 PathProgramCache]: Analyzing trace with hash 871124647, now seen corresponding path program 5 times [2024-06-28 04:35:18,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:18,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141887849] [2024-06-28 04:35:18,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:18,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:21,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:21,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141887849] [2024-06-28 04:35:21,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141887849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:21,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:21,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:21,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758213606] [2024-06-28 04:35:21,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:21,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:21,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:21,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:21,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:21,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:35:21,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 153 transitions, 1437 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 04:35:21,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:21,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:35:21,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:24,251 INFO L124 PetriNetUnfolderBase]: 7263/10309 cut-off events. [2024-06-28 04:35:24,251 INFO L125 PetriNetUnfolderBase]: For 95664/95740 co-relation queries the response was YES. [2024-06-28 04:35:24,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48430 conditions, 10309 events. 7263/10309 cut-off events. For 95664/95740 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 56120 event pairs, 3023 based on Foata normal form. 41/10345 useless extension candidates. Maximal degree in co-relation 48383. Up to 9638 conditions per place. [2024-06-28 04:35:24,335 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 139 selfloop transitions, 62 changer transitions 0/209 dead transitions. [2024-06-28 04:35:24,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 209 transitions, 2110 flow [2024-06-28 04:35:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:35:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:35:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-28 04:35:24,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-06-28 04:35:24,337 INFO L175 Difference]: Start difference. First operand has 116 places, 153 transitions, 1437 flow. Second operand 7 states and 195 transitions. [2024-06-28 04:35:24,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 209 transitions, 2110 flow [2024-06-28 04:35:24,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 209 transitions, 1948 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 04:35:24,451 INFO L231 Difference]: Finished difference. Result has 117 places, 157 transitions, 1473 flow [2024-06-28 04:35:24,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1473, PETRI_PLACES=117, PETRI_TRANSITIONS=157} [2024-06-28 04:35:24,451 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 60 predicate places. [2024-06-28 04:35:24,451 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 157 transitions, 1473 flow [2024-06-28 04:35:24,452 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 04:35:24,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:24,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:24,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:35:24,452 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:24,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash -15449933, now seen corresponding path program 6 times [2024-06-28 04:35:24,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:24,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445781685] [2024-06-28 04:35:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:24,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:28,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:28,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445781685] [2024-06-28 04:35:28,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445781685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:28,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:28,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:28,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76135065] [2024-06-28 04:35:28,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:28,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:28,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:28,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:28,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:28,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:35:28,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 157 transitions, 1473 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 04:35:28,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:28,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:35:28,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:31,229 INFO L124 PetriNetUnfolderBase]: 7254/10297 cut-off events. [2024-06-28 04:35:31,229 INFO L125 PetriNetUnfolderBase]: For 105118/105194 co-relation queries the response was YES. [2024-06-28 04:35:31,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48987 conditions, 10297 events. 7254/10297 cut-off events. For 105118/105194 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 56091 event pairs, 3023 based on Foata normal form. 41/10333 useless extension candidates. Maximal degree in co-relation 48939. Up to 9629 conditions per place. [2024-06-28 04:35:31,301 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 152 selfloop transitions, 64 changer transitions 0/224 dead transitions. [2024-06-28 04:35:31,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 224 transitions, 2072 flow [2024-06-28 04:35:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:35:31,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:35:31,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-28 04:35:31,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49794238683127573 [2024-06-28 04:35:31,303 INFO L175 Difference]: Start difference. First operand has 117 places, 157 transitions, 1473 flow. Second operand 9 states and 242 transitions. [2024-06-28 04:35:31,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 224 transitions, 2072 flow [2024-06-28 04:35:31,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 224 transitions, 1940 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 04:35:31,430 INFO L231 Difference]: Finished difference. Result has 121 places, 157 transitions, 1485 flow [2024-06-28 04:35:31,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1485, PETRI_PLACES=121, PETRI_TRANSITIONS=157} [2024-06-28 04:35:31,431 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 64 predicate places. [2024-06-28 04:35:31,431 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 157 transitions, 1485 flow [2024-06-28 04:35:31,431 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 04:35:31,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:31,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:31,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:35:31,431 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:31,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:31,432 INFO L85 PathProgramCache]: Analyzing trace with hash 235688910, now seen corresponding path program 1 times [2024-06-28 04:35:31,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:31,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656801534] [2024-06-28 04:35:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:31,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:34,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:34,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656801534] [2024-06-28 04:35:34,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656801534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:34,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:34,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:34,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435995356] [2024-06-28 04:35:34,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:34,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:34,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:34,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:34,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:34,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-28 04:35:34,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 157 transitions, 1485 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:34,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:34,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-28 04:35:34,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:37,414 INFO L124 PetriNetUnfolderBase]: 7091/10132 cut-off events. [2024-06-28 04:35:37,414 INFO L125 PetriNetUnfolderBase]: For 116811/116980 co-relation queries the response was YES. [2024-06-28 04:35:37,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49594 conditions, 10132 events. 7091/10132 cut-off events. For 116811/116980 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 56881 event pairs, 2165 based on Foata normal form. 51/9895 useless extension candidates. Maximal degree in co-relation 49546. Up to 9103 conditions per place. [2024-06-28 04:35:37,482 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 131 selfloop transitions, 68 changer transitions 0/225 dead transitions. [2024-06-28 04:35:37,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 225 transitions, 2203 flow [2024-06-28 04:35:37,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-06-28 04:35:37,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 04:35:37,484 INFO L175 Difference]: Start difference. First operand has 121 places, 157 transitions, 1485 flow. Second operand 8 states and 225 transitions. [2024-06-28 04:35:37,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 225 transitions, 2203 flow [2024-06-28 04:35:37,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 225 transitions, 2019 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 04:35:37,616 INFO L231 Difference]: Finished difference. Result has 119 places, 163 transitions, 1539 flow [2024-06-28 04:35:37,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1539, PETRI_PLACES=119, PETRI_TRANSITIONS=163} [2024-06-28 04:35:37,616 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 62 predicate places. [2024-06-28 04:35:37,617 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 163 transitions, 1539 flow [2024-06-28 04:35:37,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:37,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:37,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:37,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:35:37,617 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:37,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:37,617 INFO L85 PathProgramCache]: Analyzing trace with hash -545226486, now seen corresponding path program 2 times [2024-06-28 04:35:37,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:37,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771933312] [2024-06-28 04:35:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:37,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:41,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:41,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771933312] [2024-06-28 04:35:41,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771933312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:41,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:41,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:41,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200503047] [2024-06-28 04:35:41,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:41,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:41,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:41,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:41,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-28 04:35:41,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 163 transitions, 1539 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:41,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:41,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-28 04:35:41,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:44,025 INFO L124 PetriNetUnfolderBase]: 7137/10198 cut-off events. [2024-06-28 04:35:44,025 INFO L125 PetriNetUnfolderBase]: For 124438/124634 co-relation queries the response was YES. [2024-06-28 04:35:44,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51214 conditions, 10198 events. 7137/10198 cut-off events. For 124438/124634 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 57433 event pairs, 2606 based on Foata normal form. 45/9941 useless extension candidates. Maximal degree in co-relation 51166. Up to 9324 conditions per place. [2024-06-28 04:35:44,098 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 134 selfloop transitions, 64 changer transitions 0/224 dead transitions. [2024-06-28 04:35:44,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 224 transitions, 2123 flow [2024-06-28 04:35:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:44,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-28 04:35:44,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-28 04:35:44,104 INFO L175 Difference]: Start difference. First operand has 119 places, 163 transitions, 1539 flow. Second operand 8 states and 221 transitions. [2024-06-28 04:35:44,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 224 transitions, 2123 flow [2024-06-28 04:35:44,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 224 transitions, 2013 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 04:35:44,221 INFO L231 Difference]: Finished difference. Result has 123 places, 166 transitions, 1620 flow [2024-06-28 04:35:44,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1620, PETRI_PLACES=123, PETRI_TRANSITIONS=166} [2024-06-28 04:35:44,222 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 66 predicate places. [2024-06-28 04:35:44,222 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 166 transitions, 1620 flow [2024-06-28 04:35:44,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:44,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:44,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:44,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:35:44,223 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 04:35:44,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:44,223 INFO L85 PathProgramCache]: Analyzing trace with hash -429935316, now seen corresponding path program 3 times [2024-06-28 04:35:44,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:44,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944432700] [2024-06-28 04:35:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:44,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:48,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:48,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944432700] [2024-06-28 04:35:48,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944432700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:48,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:48,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:48,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895139533] [2024-06-28 04:35:48,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:48,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:48,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:48,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:48,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:48,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-28 04:35:48,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 166 transitions, 1620 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:48,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:48,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-28 04:35:48,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:50,746 INFO L124 PetriNetUnfolderBase]: 7185/10272 cut-off events. [2024-06-28 04:35:50,746 INFO L125 PetriNetUnfolderBase]: For 137738/137934 co-relation queries the response was YES. [2024-06-28 04:35:50,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52537 conditions, 10272 events. 7185/10272 cut-off events. For 137738/137934 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 57916 event pairs, 2606 based on Foata normal form. 45/10007 useless extension candidates. Maximal degree in co-relation 52487. Up to 9475 conditions per place. [2024-06-28 04:35:50,826 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 152 selfloop transitions, 45 changer transitions 0/223 dead transitions. [2024-06-28 04:35:50,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 223 transitions, 2192 flow [2024-06-28 04:35:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-28 04:35:50,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 04:35:50,828 INFO L175 Difference]: Start difference. First operand has 123 places, 166 transitions, 1620 flow. Second operand 8 states and 216 transitions. [2024-06-28 04:35:50,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 223 transitions, 2192 flow [2024-06-28 04:35:50,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 223 transitions, 2047 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 04:35:50,962 INFO L231 Difference]: Finished difference. Result has 125 places, 169 transitions, 1628 flow [2024-06-28 04:35:50,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1628, PETRI_PLACES=125, PETRI_TRANSITIONS=169} [2024-06-28 04:35:50,962 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 68 predicate places. [2024-06-28 04:35:50,963 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 169 transitions, 1628 flow [2024-06-28 04:35:50,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:50,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:50,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:50,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:35:50,963 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:50,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:50,963 INFO L85 PathProgramCache]: Analyzing trace with hash -429750618, now seen corresponding path program 1 times [2024-06-28 04:35:50,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:50,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789937874] [2024-06-28 04:35:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:50,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:54,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:54,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789937874] [2024-06-28 04:35:54,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789937874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:54,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:54,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:54,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896726215] [2024-06-28 04:35:54,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:54,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:54,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:54,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:54,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:54,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:35:54,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 169 transitions, 1628 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 04:35:54,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:54,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:35:54,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:57,103 INFO L124 PetriNetUnfolderBase]: 7526/10691 cut-off events. [2024-06-28 04:35:57,103 INFO L125 PetriNetUnfolderBase]: For 137064/137142 co-relation queries the response was YES. [2024-06-28 04:35:57,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53452 conditions, 10691 events. 7526/10691 cut-off events. For 137064/137142 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 58624 event pairs, 2799 based on Foata normal form. 44/10730 useless extension candidates. Maximal degree in co-relation 53401. Up to 10139 conditions per place. [2024-06-28 04:35:57,175 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 183 selfloop transitions, 36 changer transitions 0/227 dead transitions. [2024-06-28 04:35:57,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 227 transitions, 2239 flow [2024-06-28 04:35:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 04:35:57,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-28 04:35:57,177 INFO L175 Difference]: Start difference. First operand has 125 places, 169 transitions, 1628 flow. Second operand 8 states and 211 transitions. [2024-06-28 04:35:57,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 227 transitions, 2239 flow [2024-06-28 04:35:57,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 227 transitions, 2126 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 04:35:57,318 INFO L231 Difference]: Finished difference. Result has 127 places, 172 transitions, 1639 flow [2024-06-28 04:35:57,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1639, PETRI_PLACES=127, PETRI_TRANSITIONS=172} [2024-06-28 04:35:57,319 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 70 predicate places. [2024-06-28 04:35:57,319 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 172 transitions, 1639 flow [2024-06-28 04:35:57,319 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 04:35:57,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:57,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:57,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:35:57,319 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:35:57,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:57,319 INFO L85 PathProgramCache]: Analyzing trace with hash -479124150, now seen corresponding path program 4 times [2024-06-28 04:35:57,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:57,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508805570] [2024-06-28 04:35:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:57,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:00,883 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 04:36:00,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:00,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508805570] [2024-06-28 04:36:00,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508805570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:00,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:00,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:36:00,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908570795] [2024-06-28 04:36:00,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:00,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:36:00,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:00,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:36:00,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:36:00,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-28 04:36:00,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 172 transitions, 1639 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:00,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:00,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-28 04:36:00,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:03,702 INFO L124 PetriNetUnfolderBase]: 7211/10315 cut-off events. [2024-06-28 04:36:03,702 INFO L125 PetriNetUnfolderBase]: For 164734/165041 co-relation queries the response was YES. [2024-06-28 04:36:03,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54766 conditions, 10315 events. 7211/10315 cut-off events. For 164734/165041 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 58042 event pairs, 2120 based on Foata normal form. 69/10071 useless extension candidates. Maximal degree in co-relation 54714. Up to 9347 conditions per place. [2024-06-28 04:36:03,773 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 131 selfloop transitions, 63 changer transitions 0/221 dead transitions. [2024-06-28 04:36:03,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 221 transitions, 2147 flow [2024-06-28 04:36:03,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:36:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:36:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-28 04:36:03,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-28 04:36:03,775 INFO L175 Difference]: Start difference. First operand has 127 places, 172 transitions, 1639 flow. Second operand 7 states and 196 transitions. [2024-06-28 04:36:03,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 221 transitions, 2147 flow [2024-06-28 04:36:03,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 221 transitions, 2031 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 04:36:03,915 INFO L231 Difference]: Finished difference. Result has 128 places, 172 transitions, 1670 flow [2024-06-28 04:36:03,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1670, PETRI_PLACES=128, PETRI_TRANSITIONS=172} [2024-06-28 04:36:03,916 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 71 predicate places. [2024-06-28 04:36:03,916 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 172 transitions, 1670 flow [2024-06-28 04:36:03,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:03,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:03,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:03,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:36:03,917 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 04:36:03,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:03,917 INFO L85 PathProgramCache]: Analyzing trace with hash -478939452, now seen corresponding path program 2 times [2024-06-28 04:36:03,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:03,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457090253] [2024-06-28 04:36:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:03,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:07,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:07,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457090253] [2024-06-28 04:36:07,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457090253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:07,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:07,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:36:07,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672549999] [2024-06-28 04:36:07,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:07,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:36:07,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:36:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:36:07,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:36:07,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 172 transitions, 1670 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 04:36:07,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:07,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:36:07,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:09,759 INFO L124 PetriNetUnfolderBase]: 7543/10718 cut-off events. [2024-06-28 04:36:09,760 INFO L125 PetriNetUnfolderBase]: For 163540/163622 co-relation queries the response was YES. [2024-06-28 04:36:09,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55936 conditions, 10718 events. 7543/10718 cut-off events. For 163540/163622 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 58814 event pairs, 2790 based on Foata normal form. 44/10757 useless extension candidates. Maximal degree in co-relation 55883. Up to 10128 conditions per place. [2024-06-28 04:36:09,849 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 174 selfloop transitions, 39 changer transitions 0/221 dead transitions. [2024-06-28 04:36:09,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 221 transitions, 2253 flow [2024-06-28 04:36:09,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:36:09,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:36:09,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 04:36:09,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-28 04:36:09,850 INFO L175 Difference]: Start difference. First operand has 128 places, 172 transitions, 1670 flow. Second operand 7 states and 186 transitions. [2024-06-28 04:36:09,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 221 transitions, 2253 flow [2024-06-28 04:36:10,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 221 transitions, 2110 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:36:10,025 INFO L231 Difference]: Finished difference. Result has 129 places, 175 transitions, 1667 flow [2024-06-28 04:36:10,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1667, PETRI_PLACES=129, PETRI_TRANSITIONS=175} [2024-06-28 04:36:10,025 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 72 predicate places. [2024-06-28 04:36:10,025 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 175 transitions, 1667 flow [2024-06-28 04:36:10,025 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 04:36:10,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:10,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:10,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:36:10,026 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 04:36:10,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:10,026 INFO L85 PathProgramCache]: Analyzing trace with hash -251038302, now seen corresponding path program 3 times [2024-06-28 04:36:10,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:10,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033802678] [2024-06-28 04:36:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:13,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:13,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033802678] [2024-06-28 04:36:13,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033802678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:13,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:13,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:36:13,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928958136] [2024-06-28 04:36:13,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:13,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:36:13,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:13,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:36:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:36:13,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:36:13,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 175 transitions, 1667 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 04:36:13,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:13,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:36:13,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:15,606 INFO L124 PetriNetUnfolderBase]: 7587/10794 cut-off events. [2024-06-28 04:36:15,607 INFO L125 PetriNetUnfolderBase]: For 168388/168985 co-relation queries the response was YES. [2024-06-28 04:36:15,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57317 conditions, 10794 events. 7587/10794 cut-off events. For 168388/168985 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 59143 event pairs, 2840 based on Foata normal form. 100/10881 useless extension candidates. Maximal degree in co-relation 57263. Up to 10230 conditions per place. [2024-06-28 04:36:15,679 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 177 selfloop transitions, 35 changer transitions 0/220 dead transitions. [2024-06-28 04:36:15,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 220 transitions, 2244 flow [2024-06-28 04:36:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:36:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:36:15,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 04:36:15,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2024-06-28 04:36:15,681 INFO L175 Difference]: Start difference. First operand has 129 places, 175 transitions, 1667 flow. Second operand 7 states and 181 transitions. [2024-06-28 04:36:15,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 220 transitions, 2244 flow [2024-06-28 04:36:15,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 220 transitions, 2126 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 04:36:15,812 INFO L231 Difference]: Finished difference. Result has 131 places, 178 transitions, 1683 flow [2024-06-28 04:36:15,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1683, PETRI_PLACES=131, PETRI_TRANSITIONS=178} [2024-06-28 04:36:15,813 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 74 predicate places. [2024-06-28 04:36:15,813 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 178 transitions, 1683 flow [2024-06-28 04:36:15,813 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 04:36:15,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:15,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:15,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:36:15,813 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:15,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash -242467422, now seen corresponding path program 4 times [2024-06-28 04:36:15,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:15,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978481326] [2024-06-28 04:36:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:15,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:19,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:19,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978481326] [2024-06-28 04:36:19,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978481326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:19,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:19,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:36:19,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855860302] [2024-06-28 04:36:19,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:19,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:36:19,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:19,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:36:19,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:36:19,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:36:19,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 178 transitions, 1683 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 04:36:19,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:19,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:36:19,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:21,514 INFO L124 PetriNetUnfolderBase]: 7572/10773 cut-off events. [2024-06-28 04:36:21,514 INFO L125 PetriNetUnfolderBase]: For 166969/167569 co-relation queries the response was YES. [2024-06-28 04:36:21,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56948 conditions, 10773 events. 7572/10773 cut-off events. For 166969/167569 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 59056 event pairs, 2643 based on Foata normal form. 100/10860 useless extension candidates. Maximal degree in co-relation 56893. Up to 10047 conditions per place. [2024-06-28 04:36:21,602 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 170 selfloop transitions, 46 changer transitions 0/224 dead transitions. [2024-06-28 04:36:21,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 224 transitions, 2270 flow [2024-06-28 04:36:21,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:36:21,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:36:21,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 04:36:21,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 04:36:21,604 INFO L175 Difference]: Start difference. First operand has 131 places, 178 transitions, 1683 flow. Second operand 7 states and 182 transitions. [2024-06-28 04:36:21,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 224 transitions, 2270 flow [2024-06-28 04:36:21,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 224 transitions, 2168 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 04:36:21,774 INFO L231 Difference]: Finished difference. Result has 133 places, 181 transitions, 1737 flow [2024-06-28 04:36:21,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1737, PETRI_PLACES=133, PETRI_TRANSITIONS=181} [2024-06-28 04:36:21,774 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 76 predicate places. [2024-06-28 04:36:21,774 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 181 transitions, 1737 flow [2024-06-28 04:36:21,774 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 04:36:21,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:21,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:21,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:36:21,775 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 04:36:21,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash -542225420, now seen corresponding path program 1 times [2024-06-28 04:36:21,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:21,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624976533] [2024-06-28 04:36:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:21,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:23,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:23,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624976533] [2024-06-28 04:36:23,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624976533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:23,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:23,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:36:23,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978998024] [2024-06-28 04:36:23,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:23,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:36:23,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:23,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:36:23,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:36:23,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:36:23,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 181 transitions, 1737 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:23,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:23,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:36:23,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:26,109 INFO L124 PetriNetUnfolderBase]: 8370/11900 cut-off events. [2024-06-28 04:36:26,109 INFO L125 PetriNetUnfolderBase]: For 208419/208506 co-relation queries the response was YES. [2024-06-28 04:36:26,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64584 conditions, 11900 events. 8370/11900 cut-off events. For 208419/208506 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 65792 event pairs, 3347 based on Foata normal form. 91/11965 useless extension candidates. Maximal degree in co-relation 64528. Up to 11322 conditions per place. [2024-06-28 04:36:26,340 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 184 selfloop transitions, 15 changer transitions 0/213 dead transitions. [2024-06-28 04:36:26,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 213 transitions, 2303 flow [2024-06-28 04:36:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:36:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:36:26,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-28 04:36:26,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-28 04:36:26,341 INFO L175 Difference]: Start difference. First operand has 133 places, 181 transitions, 1737 flow. Second operand 5 states and 124 transitions. [2024-06-28 04:36:26,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 213 transitions, 2303 flow [2024-06-28 04:36:26,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 213 transitions, 2169 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 04:36:26,502 INFO L231 Difference]: Finished difference. Result has 134 places, 194 transitions, 1792 flow [2024-06-28 04:36:26,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1792, PETRI_PLACES=134, PETRI_TRANSITIONS=194} [2024-06-28 04:36:26,503 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 77 predicate places. [2024-06-28 04:36:26,503 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 194 transitions, 1792 flow [2024-06-28 04:36:26,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:26,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:26,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:26,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:36:26,503 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:26,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:26,503 INFO L85 PathProgramCache]: Analyzing trace with hash 189284040, now seen corresponding path program 1 times [2024-06-28 04:36:26,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:26,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733899815] [2024-06-28 04:36:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:26,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:30,883 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 04:36:30,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:30,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733899815] [2024-06-28 04:36:30,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733899815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:30,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:30,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:36:30,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738714326] [2024-06-28 04:36:30,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:30,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:36:30,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:30,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:36:30,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:36:30,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:36:30,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 194 transitions, 1792 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:30,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:30,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:36:30,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:33,819 INFO L124 PetriNetUnfolderBase]: 8815/12531 cut-off events. [2024-06-28 04:36:33,819 INFO L125 PetriNetUnfolderBase]: For 247066/247475 co-relation queries the response was YES. [2024-06-28 04:36:33,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73392 conditions, 12531 events. 8815/12531 cut-off events. For 247066/247475 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 70002 event pairs, 2167 based on Foata normal form. 126/12643 useless extension candidates. Maximal degree in co-relation 73334. Up to 10951 conditions per place. [2024-06-28 04:36:33,926 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 197 selfloop transitions, 80 changer transitions 0/287 dead transitions. [2024-06-28 04:36:33,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 287 transitions, 2864 flow [2024-06-28 04:36:33,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:36:33,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:36:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-06-28 04:36:33,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51440329218107 [2024-06-28 04:36:33,927 INFO L175 Difference]: Start difference. First operand has 134 places, 194 transitions, 1792 flow. Second operand 9 states and 250 transitions. [2024-06-28 04:36:33,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 287 transitions, 2864 flow [2024-06-28 04:36:34,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 287 transitions, 2848 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 04:36:34,135 INFO L231 Difference]: Finished difference. Result has 144 places, 206 transitions, 2158 flow [2024-06-28 04:36:34,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2158, PETRI_PLACES=144, PETRI_TRANSITIONS=206} [2024-06-28 04:36:34,136 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 87 predicate places. [2024-06-28 04:36:34,136 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 206 transitions, 2158 flow [2024-06-28 04:36:34,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:34,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:34,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:34,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:36:34,136 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:34,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:34,137 INFO L85 PathProgramCache]: Analyzing trace with hash 191161710, now seen corresponding path program 2 times [2024-06-28 04:36:34,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:34,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732003013] [2024-06-28 04:36:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:38,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:38,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732003013] [2024-06-28 04:36:38,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732003013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:38,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:38,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:36:38,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913721769] [2024-06-28 04:36:38,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:38,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:36:38,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:38,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:36:38,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:36:38,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:36:38,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 206 transitions, 2158 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:38,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:38,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:36:38,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:41,608 INFO L124 PetriNetUnfolderBase]: 8971/12809 cut-off events. [2024-06-28 04:36:41,608 INFO L125 PetriNetUnfolderBase]: For 276376/276775 co-relation queries the response was YES. [2024-06-28 04:36:41,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77479 conditions, 12809 events. 8971/12809 cut-off events. For 276376/276775 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 72404 event pairs, 2952 based on Foata normal form. 132/12927 useless extension candidates. Maximal degree in co-relation 77416. Up to 11791 conditions per place. [2024-06-28 04:36:41,716 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 197 selfloop transitions, 72 changer transitions 0/279 dead transitions. [2024-06-28 04:36:41,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 279 transitions, 2931 flow [2024-06-28 04:36:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:36:41,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:36:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-28 04:36:41,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020576131687243 [2024-06-28 04:36:41,718 INFO L175 Difference]: Start difference. First operand has 144 places, 206 transitions, 2158 flow. Second operand 9 states and 244 transitions. [2024-06-28 04:36:41,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 279 transitions, 2931 flow [2024-06-28 04:36:42,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 279 transitions, 2805 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 04:36:42,028 INFO L231 Difference]: Finished difference. Result has 149 places, 208 transitions, 2238 flow [2024-06-28 04:36:42,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2238, PETRI_PLACES=149, PETRI_TRANSITIONS=208} [2024-06-28 04:36:42,029 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 92 predicate places. [2024-06-28 04:36:42,029 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 208 transitions, 2238 flow [2024-06-28 04:36:42,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:42,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:42,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:42,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:36:42,030 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:42,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:42,030 INFO L85 PathProgramCache]: Analyzing trace with hash 277849800, now seen corresponding path program 3 times [2024-06-28 04:36:42,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:42,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615795860] [2024-06-28 04:36:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:42,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:45,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:45,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615795860] [2024-06-28 04:36:45,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615795860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:45,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:45,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:36:45,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694610019] [2024-06-28 04:36:45,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:45,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:36:45,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:45,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:36:45,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:36:46,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:36:46,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 208 transitions, 2238 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:46,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:46,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:36:46,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:49,121 INFO L124 PetriNetUnfolderBase]: 9083/12981 cut-off events. [2024-06-28 04:36:49,122 INFO L125 PetriNetUnfolderBase]: For 297550/297951 co-relation queries the response was YES. [2024-06-28 04:36:49,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79577 conditions, 12981 events. 9083/12981 cut-off events. For 297550/297951 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 73553 event pairs, 2936 based on Foata normal form. 126/13093 useless extension candidates. Maximal degree in co-relation 79512. Up to 11781 conditions per place. [2024-06-28 04:36:49,242 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 200 selfloop transitions, 76 changer transitions 0/286 dead transitions. [2024-06-28 04:36:49,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 286 transitions, 3065 flow [2024-06-28 04:36:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:36:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:36:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-28 04:36:49,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082304526748971 [2024-06-28 04:36:49,243 INFO L175 Difference]: Start difference. First operand has 149 places, 208 transitions, 2238 flow. Second operand 9 states and 247 transitions. [2024-06-28 04:36:49,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 286 transitions, 3065 flow [2024-06-28 04:36:49,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 286 transitions, 2895 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 04:36:49,731 INFO L231 Difference]: Finished difference. Result has 152 places, 212 transitions, 2319 flow [2024-06-28 04:36:49,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2068, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2319, PETRI_PLACES=152, PETRI_TRANSITIONS=212} [2024-06-28 04:36:49,731 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 95 predicate places. [2024-06-28 04:36:49,731 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 212 transitions, 2319 flow [2024-06-28 04:36:49,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:49,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:49,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:49,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:36:49,732 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:49,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:49,732 INFO L85 PathProgramCache]: Analyzing trace with hash -442943356, now seen corresponding path program 4 times [2024-06-28 04:36:49,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:49,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551379512] [2024-06-28 04:36:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:49,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:53,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:53,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551379512] [2024-06-28 04:36:53,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551379512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:53,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:53,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:36:53,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968448607] [2024-06-28 04:36:53,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:53,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:36:53,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:53,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:36:53,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:36:54,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:36:54,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 212 transitions, 2319 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:54,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:54,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:36:54,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:57,293 INFO L124 PetriNetUnfolderBase]: 9239/13237 cut-off events. [2024-06-28 04:36:57,293 INFO L125 PetriNetUnfolderBase]: For 321611/322010 co-relation queries the response was YES. [2024-06-28 04:36:57,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81863 conditions, 13237 events. 9239/13237 cut-off events. For 321611/322010 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 75563 event pairs, 3010 based on Foata normal form. 116/13339 useless extension candidates. Maximal degree in co-relation 81796. Up to 12341 conditions per place. [2024-06-28 04:36:57,422 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 223 selfloop transitions, 48 changer transitions 0/281 dead transitions. [2024-06-28 04:36:57,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 281 transitions, 3094 flow [2024-06-28 04:36:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:36:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:36:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-28 04:36:57,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-28 04:36:57,423 INFO L175 Difference]: Start difference. First operand has 152 places, 212 transitions, 2319 flow. Second operand 9 states and 240 transitions. [2024-06-28 04:36:57,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 281 transitions, 3094 flow [2024-06-28 04:36:57,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 281 transitions, 2970 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 04:36:57,858 INFO L231 Difference]: Finished difference. Result has 156 places, 214 transitions, 2361 flow [2024-06-28 04:36:57,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2195, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2361, PETRI_PLACES=156, PETRI_TRANSITIONS=214} [2024-06-28 04:36:57,858 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 99 predicate places. [2024-06-28 04:36:57,858 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 214 transitions, 2361 flow [2024-06-28 04:36:57,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:57,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:57,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:57,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:36:57,859 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:36:57,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1696953102, now seen corresponding path program 5 times [2024-06-28 04:36:57,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:57,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28659464] [2024-06-28 04:36:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:57,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:02,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:02,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28659464] [2024-06-28 04:37:02,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28659464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:02,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:02,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:02,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303803631] [2024-06-28 04:37:02,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:02,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:02,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:02,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:37:02,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 214 transitions, 2361 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:02,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:02,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:37:02,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:05,593 INFO L124 PetriNetUnfolderBase]: 9925/14294 cut-off events. [2024-06-28 04:37:05,593 INFO L125 PetriNetUnfolderBase]: For 361894/362445 co-relation queries the response was YES. [2024-06-28 04:37:05,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90143 conditions, 14294 events. 9925/14294 cut-off events. For 361894/362445 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 82780 event pairs, 3083 based on Foata normal form. 116/14389 useless extension candidates. Maximal degree in co-relation 90074. Up to 12876 conditions per place. [2024-06-28 04:37:05,698 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 244 selfloop transitions, 65 changer transitions 0/319 dead transitions. [2024-06-28 04:37:05,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 319 transitions, 3928 flow [2024-06-28 04:37:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:37:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:37:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-28 04:37:05,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 04:37:05,700 INFO L175 Difference]: Start difference. First operand has 156 places, 214 transitions, 2361 flow. Second operand 10 states and 258 transitions. [2024-06-28 04:37:05,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 319 transitions, 3928 flow [2024-06-28 04:37:06,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 319 transitions, 3720 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 04:37:06,131 INFO L231 Difference]: Finished difference. Result has 164 places, 247 transitions, 2983 flow [2024-06-28 04:37:06,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2983, PETRI_PLACES=164, PETRI_TRANSITIONS=247} [2024-06-28 04:37:06,132 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 107 predicate places. [2024-06-28 04:37:06,132 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 247 transitions, 2983 flow [2024-06-28 04:37:06,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:06,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:06,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:06,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:37:06,132 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:06,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:06,132 INFO L85 PathProgramCache]: Analyzing trace with hash -809379948, now seen corresponding path program 6 times [2024-06-28 04:37:06,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:06,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548318658] [2024-06-28 04:37:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:06,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:09,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:09,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548318658] [2024-06-28 04:37:09,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548318658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:09,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:09,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:09,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247326112] [2024-06-28 04:37:09,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:09,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:09,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:09,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:09,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:09,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:37:09,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 247 transitions, 2983 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:09,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:09,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:37:09,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:14,094 INFO L124 PetriNetUnfolderBase]: 10865/15748 cut-off events. [2024-06-28 04:37:14,094 INFO L125 PetriNetUnfolderBase]: For 426594/427006 co-relation queries the response was YES. [2024-06-28 04:37:14,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100211 conditions, 15748 events. 10865/15748 cut-off events. For 426594/427006 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 94181 event pairs, 4109 based on Foata normal form. 142/15817 useless extension candidates. Maximal degree in co-relation 100136. Up to 13880 conditions per place. [2024-06-28 04:37:14,242 INFO L140 encePairwiseOnDemand]: 37/54 looper letters, 304 selfloop transitions, 127 changer transitions 0/441 dead transitions. [2024-06-28 04:37:14,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 441 transitions, 5517 flow [2024-06-28 04:37:14,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 04:37:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 04:37:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 409 transitions. [2024-06-28 04:37:14,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47337962962962965 [2024-06-28 04:37:14,244 INFO L175 Difference]: Start difference. First operand has 164 places, 247 transitions, 2983 flow. Second operand 16 states and 409 transitions. [2024-06-28 04:37:14,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 441 transitions, 5517 flow [2024-06-28 04:37:14,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 441 transitions, 5471 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-28 04:37:14,898 INFO L231 Difference]: Finished difference. Result has 188 places, 323 transitions, 4366 flow [2024-06-28 04:37:14,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4366, PETRI_PLACES=188, PETRI_TRANSITIONS=323} [2024-06-28 04:37:14,899 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 131 predicate places. [2024-06-28 04:37:14,899 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 323 transitions, 4366 flow [2024-06-28 04:37:14,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:14,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:14,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:14,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:37:14,899 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:14,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:14,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1344121218, now seen corresponding path program 7 times [2024-06-28 04:37:14,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:14,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794385926] [2024-06-28 04:37:14,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:14,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:18,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:18,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794385926] [2024-06-28 04:37:18,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794385926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:18,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:18,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:18,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899178760] [2024-06-28 04:37:18,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:18,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:18,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:18,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:18,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:18,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:37:18,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 323 transitions, 4366 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:18,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:18,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:37:18,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:23,422 INFO L124 PetriNetUnfolderBase]: 11820/17143 cut-off events. [2024-06-28 04:37:23,422 INFO L125 PetriNetUnfolderBase]: For 531723/532142 co-relation queries the response was YES. [2024-06-28 04:37:23,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117369 conditions, 17143 events. 11820/17143 cut-off events. For 531723/532142 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 104051 event pairs, 4280 based on Foata normal form. 118/17188 useless extension candidates. Maximal degree in co-relation 117282. Up to 13916 conditions per place. [2024-06-28 04:37:23,607 INFO L140 encePairwiseOnDemand]: 37/54 looper letters, 299 selfloop transitions, 134 changer transitions 0/443 dead transitions. [2024-06-28 04:37:23,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 443 transitions, 6273 flow [2024-06-28 04:37:23,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:37:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:37:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 344 transitions. [2024-06-28 04:37:23,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49002849002849 [2024-06-28 04:37:23,608 INFO L175 Difference]: Start difference. First operand has 188 places, 323 transitions, 4366 flow. Second operand 13 states and 344 transitions. [2024-06-28 04:37:23,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 443 transitions, 6273 flow [2024-06-28 04:37:24,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 443 transitions, 6162 flow, removed 48 selfloop flow, removed 2 redundant places. [2024-06-28 04:37:24,748 INFO L231 Difference]: Finished difference. Result has 200 places, 333 transitions, 4758 flow [2024-06-28 04:37:24,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4255, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4758, PETRI_PLACES=200, PETRI_TRANSITIONS=333} [2024-06-28 04:37:24,749 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 143 predicate places. [2024-06-28 04:37:24,749 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 333 transitions, 4758 flow [2024-06-28 04:37:24,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:24,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:24,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:24,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:37:24,749 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:24,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:24,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1349846670, now seen corresponding path program 1 times [2024-06-28 04:37:24,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:24,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137737895] [2024-06-28 04:37:24,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:24,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:28,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:28,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137737895] [2024-06-28 04:37:28,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137737895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:28,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:28,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:28,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260974023] [2024-06-28 04:37:28,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:28,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:28,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:28,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:37:28,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 333 transitions, 4758 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:28,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:28,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:37:28,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:33,089 INFO L124 PetriNetUnfolderBase]: 11976/17399 cut-off events. [2024-06-28 04:37:33,092 INFO L125 PetriNetUnfolderBase]: For 566484/566903 co-relation queries the response was YES. [2024-06-28 04:37:33,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122321 conditions, 17399 events. 11976/17399 cut-off events. For 566484/566903 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 106082 event pairs, 4372 based on Foata normal form. 88/17414 useless extension candidates. Maximal degree in co-relation 122231. Up to 15403 conditions per place. [2024-06-28 04:37:33,261 INFO L140 encePairwiseOnDemand]: 38/54 looper letters, 319 selfloop transitions, 114 changer transitions 0/443 dead transitions. [2024-06-28 04:37:33,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 443 transitions, 6175 flow [2024-06-28 04:37:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:37:33,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:37:33,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2024-06-28 04:37:33,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49228395061728397 [2024-06-28 04:37:33,263 INFO L175 Difference]: Start difference. First operand has 200 places, 333 transitions, 4758 flow. Second operand 12 states and 319 transitions. [2024-06-28 04:37:33,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 443 transitions, 6175 flow [2024-06-28 04:37:34,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 443 transitions, 6009 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 04:37:34,630 INFO L231 Difference]: Finished difference. Result has 206 places, 344 transitions, 5113 flow [2024-06-28 04:37:34,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4592, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5113, PETRI_PLACES=206, PETRI_TRANSITIONS=344} [2024-06-28 04:37:34,631 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 149 predicate places. [2024-06-28 04:37:34,631 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 344 transitions, 5113 flow [2024-06-28 04:37:34,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:34,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:34,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:34,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:37:34,632 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:34,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash -437580976, now seen corresponding path program 8 times [2024-06-28 04:37:34,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:34,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843430366] [2024-06-28 04:37:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:34,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:38,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:38,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843430366] [2024-06-28 04:37:38,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843430366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:38,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:38,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:38,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273767993] [2024-06-28 04:37:38,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:38,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:38,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:38,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:38,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:38,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:37:38,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 344 transitions, 5113 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:38,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:38,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:37:38,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:43,357 INFO L124 PetriNetUnfolderBase]: 11922/17328 cut-off events. [2024-06-28 04:37:43,357 INFO L125 PetriNetUnfolderBase]: For 592925/593358 co-relation queries the response was YES. [2024-06-28 04:37:43,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124157 conditions, 17328 events. 11922/17328 cut-off events. For 592925/593358 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 105600 event pairs, 4408 based on Foata normal form. 102/17357 useless extension candidates. Maximal degree in co-relation 124062. Up to 15594 conditions per place. [2024-06-28 04:37:43,539 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 306 selfloop transitions, 118 changer transitions 0/434 dead transitions. [2024-06-28 04:37:43,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 434 transitions, 6294 flow [2024-06-28 04:37:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:37:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:37:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 288 transitions. [2024-06-28 04:37:43,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-28 04:37:43,541 INFO L175 Difference]: Start difference. First operand has 206 places, 344 transitions, 5113 flow. Second operand 11 states and 288 transitions. [2024-06-28 04:37:43,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 434 transitions, 6294 flow [2024-06-28 04:37:45,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 434 transitions, 6002 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-28 04:37:45,052 INFO L231 Difference]: Finished difference. Result has 211 places, 345 transitions, 5109 flow [2024-06-28 04:37:45,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4835, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5109, PETRI_PLACES=211, PETRI_TRANSITIONS=345} [2024-06-28 04:37:45,053 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 154 predicate places. [2024-06-28 04:37:45,053 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 345 transitions, 5109 flow [2024-06-28 04:37:45,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:45,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:45,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:45,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:37:45,053 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:45,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash -437365774, now seen corresponding path program 2 times [2024-06-28 04:37:45,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:45,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300158315] [2024-06-28 04:37:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:45,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:48,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:48,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300158315] [2024-06-28 04:37:48,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300158315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:48,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:48,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:48,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734505932] [2024-06-28 04:37:48,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:48,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:48,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:48,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:48,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:48,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:37:48,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 345 transitions, 5109 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:48,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:48,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:37:48,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:53,770 INFO L124 PetriNetUnfolderBase]: 12034/17520 cut-off events. [2024-06-28 04:37:53,770 INFO L125 PetriNetUnfolderBase]: For 609595/610030 co-relation queries the response was YES. [2024-06-28 04:37:53,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124784 conditions, 17520 events. 12034/17520 cut-off events. For 609595/610030 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 107157 event pairs, 4358 based on Foata normal form. 96/17543 useless extension candidates. Maximal degree in co-relation 124688. Up to 14850 conditions per place. [2024-06-28 04:37:53,939 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 295 selfloop transitions, 134 changer transitions 0/439 dead transitions. [2024-06-28 04:37:53,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 439 transitions, 6336 flow [2024-06-28 04:37:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:37:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:37:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2024-06-28 04:37:53,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882154882154882 [2024-06-28 04:37:53,941 INFO L175 Difference]: Start difference. First operand has 211 places, 345 transitions, 5109 flow. Second operand 11 states and 290 transitions. [2024-06-28 04:37:53,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 439 transitions, 6336 flow [2024-06-28 04:37:55,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 439 transitions, 6088 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 04:37:55,279 INFO L231 Difference]: Finished difference. Result has 213 places, 347 transitions, 5199 flow [2024-06-28 04:37:55,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4861, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5199, PETRI_PLACES=213, PETRI_TRANSITIONS=347} [2024-06-28 04:37:55,280 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 156 predicate places. [2024-06-28 04:37:55,280 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 347 transitions, 5199 flow [2024-06-28 04:37:55,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:55,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:55,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:37:55,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:37:55,280 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:37:55,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:55,281 INFO L85 PathProgramCache]: Analyzing trace with hash 807533524, now seen corresponding path program 9 times [2024-06-28 04:37:55,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:55,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293504237] [2024-06-28 04:37:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:55,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:59,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:59,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293504237] [2024-06-28 04:37:59,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293504237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:59,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:59,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:59,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274583177] [2024-06-28 04:37:59,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:59,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:59,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:59,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:59,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:37:59,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 347 transitions, 5199 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:59,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:59,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:37:59,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:03,972 INFO L124 PetriNetUnfolderBase]: 12382/18010 cut-off events. [2024-06-28 04:38:03,972 INFO L125 PetriNetUnfolderBase]: For 665664/666819 co-relation queries the response was YES. [2024-06-28 04:38:04,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130490 conditions, 18010 events. 12382/18010 cut-off events. For 665664/666819 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 110127 event pairs, 4362 based on Foata normal form. 260/18200 useless extension candidates. Maximal degree in co-relation 130393. Up to 16458 conditions per place. [2024-06-28 04:38:04,147 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 289 selfloop transitions, 128 changer transitions 0/427 dead transitions. [2024-06-28 04:38:04,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 427 transitions, 6358 flow [2024-06-28 04:38:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:38:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:38:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-28 04:38:04,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48703703703703705 [2024-06-28 04:38:04,149 INFO L175 Difference]: Start difference. First operand has 213 places, 347 transitions, 5199 flow. Second operand 10 states and 263 transitions. [2024-06-28 04:38:04,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 427 transitions, 6358 flow [2024-06-28 04:38:05,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 427 transitions, 6087 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 04:38:05,539 INFO L231 Difference]: Finished difference. Result has 215 places, 349 transitions, 5268 flow [2024-06-28 04:38:05,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4928, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5268, PETRI_PLACES=215, PETRI_TRANSITIONS=349} [2024-06-28 04:38:05,540 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 158 predicate places. [2024-06-28 04:38:05,540 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 349 transitions, 5268 flow [2024-06-28 04:38:05,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:05,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:05,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:38:05,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:38:05,540 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:38:05,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:05,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1967941360, now seen corresponding path program 10 times [2024-06-28 04:38:05,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:05,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549590357] [2024-06-28 04:38:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:05,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:09,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:09,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:09,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549590357] [2024-06-28 04:38:09,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549590357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:09,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:09,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:09,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006881085] [2024-06-28 04:38:09,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:09,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:09,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:09,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:09,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:09,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:38:09,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 349 transitions, 5268 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:09,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:09,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:38:09,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:14,181 INFO L124 PetriNetUnfolderBase]: 12353/17971 cut-off events. [2024-06-28 04:38:14,181 INFO L125 PetriNetUnfolderBase]: For 653969/654744 co-relation queries the response was YES. [2024-06-28 04:38:14,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128086 conditions, 17971 events. 12353/17971 cut-off events. For 653969/654744 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 110305 event pairs, 4388 based on Foata normal form. 193/18099 useless extension candidates. Maximal degree in co-relation 127988. Up to 15906 conditions per place. [2024-06-28 04:38:14,368 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 267 selfloop transitions, 134 changer transitions 0/411 dead transitions. [2024-06-28 04:38:14,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 411 transitions, 6331 flow [2024-06-28 04:38:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:38:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:38:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-28 04:38:14,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-28 04:38:14,370 INFO L175 Difference]: Start difference. First operand has 215 places, 349 transitions, 5268 flow. Second operand 8 states and 219 transitions. [2024-06-28 04:38:14,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 411 transitions, 6331 flow [2024-06-28 04:38:15,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 411 transitions, 6033 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 04:38:15,689 INFO L231 Difference]: Finished difference. Result has 215 places, 351 transitions, 5338 flow [2024-06-28 04:38:15,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4970, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5338, PETRI_PLACES=215, PETRI_TRANSITIONS=351} [2024-06-28 04:38:15,690 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 158 predicate places. [2024-06-28 04:38:15,690 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 351 transitions, 5338 flow [2024-06-28 04:38:15,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:15,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:15,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:38:15,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:38:15,690 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:38:15,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:15,691 INFO L85 PathProgramCache]: Analyzing trace with hash 669005042, now seen corresponding path program 11 times [2024-06-28 04:38:15,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:15,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112428309] [2024-06-28 04:38:15,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:15,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:19,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:19,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112428309] [2024-06-28 04:38:19,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112428309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:19,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:19,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:19,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056685655] [2024-06-28 04:38:19,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:19,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:19,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:19,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:19,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:19,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:38:19,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 351 transitions, 5338 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:19,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:19,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:38:19,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:23,972 INFO L124 PetriNetUnfolderBase]: 12465/18137 cut-off events. [2024-06-28 04:38:23,972 INFO L125 PetriNetUnfolderBase]: For 682102/682900 co-relation queries the response was YES. [2024-06-28 04:38:24,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129919 conditions, 18137 events. 12465/18137 cut-off events. For 682102/682900 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 111148 event pairs, 3606 based on Foata normal form. 165/18239 useless extension candidates. Maximal degree in co-relation 129820. Up to 14348 conditions per place. [2024-06-28 04:38:24,153 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 253 selfloop transitions, 159 changer transitions 0/422 dead transitions. [2024-06-28 04:38:24,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 422 transitions, 6668 flow [2024-06-28 04:38:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:38:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:38:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-06-28 04:38:24,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 04:38:24,154 INFO L175 Difference]: Start difference. First operand has 215 places, 351 transitions, 5338 flow. Second operand 8 states and 225 transitions. [2024-06-28 04:38:24,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 422 transitions, 6668 flow [2024-06-28 04:38:25,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 422 transitions, 6378 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 04:38:25,415 INFO L231 Difference]: Finished difference. Result has 218 places, 354 transitions, 5522 flow [2024-06-28 04:38:25,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5048, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5522, PETRI_PLACES=218, PETRI_TRANSITIONS=354} [2024-06-28 04:38:25,415 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 161 predicate places. [2024-06-28 04:38:25,415 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 354 transitions, 5522 flow [2024-06-28 04:38:25,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:25,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:25,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:38:25,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:38:25,416 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:38:25,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:25,416 INFO L85 PathProgramCache]: Analyzing trace with hash 674515292, now seen corresponding path program 12 times [2024-06-28 04:38:25,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:25,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703419395] [2024-06-28 04:38:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:25,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:29,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:29,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703419395] [2024-06-28 04:38:29,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703419395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:29,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:29,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:29,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119112163] [2024-06-28 04:38:29,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:29,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:29,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:29,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:29,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:29,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:38:29,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 354 transitions, 5522 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:29,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:29,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:38:29,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:35,194 INFO L124 PetriNetUnfolderBase]: 12411/18074 cut-off events. [2024-06-28 04:38:35,194 INFO L125 PetriNetUnfolderBase]: For 702758/703720 co-relation queries the response was YES. [2024-06-28 04:38:35,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130528 conditions, 18074 events. 12411/18074 cut-off events. For 702758/703720 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 111054 event pairs, 4343 based on Foata normal form. 288/18299 useless extension candidates. Maximal degree in co-relation 130427. Up to 16000 conditions per place. [2024-06-28 04:38:35,373 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 290 selfloop transitions, 137 changer transitions 0/437 dead transitions. [2024-06-28 04:38:35,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 437 transitions, 6685 flow [2024-06-28 04:38:35,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:38:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:38:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 269 transitions. [2024-06-28 04:38:35,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981481481481482 [2024-06-28 04:38:35,375 INFO L175 Difference]: Start difference. First operand has 218 places, 354 transitions, 5522 flow. Second operand 10 states and 269 transitions. [2024-06-28 04:38:35,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 437 transitions, 6685 flow [2024-06-28 04:38:37,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 437 transitions, 6128 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-28 04:38:37,455 INFO L231 Difference]: Finished difference. Result has 220 places, 355 transitions, 5299 flow [2024-06-28 04:38:37,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4979, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5299, PETRI_PLACES=220, PETRI_TRANSITIONS=355} [2024-06-28 04:38:37,455 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 163 predicate places. [2024-06-28 04:38:37,455 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 355 transitions, 5299 flow [2024-06-28 04:38:37,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:37,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:37,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:38:37,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:38:37,456 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:38:37,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:37,456 INFO L85 PathProgramCache]: Analyzing trace with hash 807748726, now seen corresponding path program 3 times [2024-06-28 04:38:37,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:37,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717320251] [2024-06-28 04:38:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:37,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:41,045 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 04:38:41,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:41,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717320251] [2024-06-28 04:38:41,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717320251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:41,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:41,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:41,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162095283] [2024-06-28 04:38:41,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:41,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:41,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:41,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:41,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:41,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:38:41,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 355 transitions, 5299 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:41,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:41,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:38:41,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:45,954 INFO L124 PetriNetUnfolderBase]: 12713/18563 cut-off events. [2024-06-28 04:38:45,954 INFO L125 PetriNetUnfolderBase]: For 687329/688428 co-relation queries the response was YES. [2024-06-28 04:38:46,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131283 conditions, 18563 events. 12713/18563 cut-off events. For 687329/688428 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 114738 event pairs, 4395 based on Foata normal form. 252/18745 useless extension candidates. Maximal degree in co-relation 131183. Up to 16781 conditions per place. [2024-06-28 04:38:46,140 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 304 selfloop transitions, 133 changer transitions 0/447 dead transitions. [2024-06-28 04:38:46,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 447 transitions, 6522 flow [2024-06-28 04:38:46,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:38:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:38:46,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2024-06-28 04:38:46,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882154882154882 [2024-06-28 04:38:46,142 INFO L175 Difference]: Start difference. First operand has 220 places, 355 transitions, 5299 flow. Second operand 11 states and 290 transitions. [2024-06-28 04:38:46,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 447 transitions, 6522 flow [2024-06-28 04:38:47,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 447 transitions, 6236 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 04:38:47,786 INFO L231 Difference]: Finished difference. Result has 223 places, 357 transitions, 5346 flow [2024-06-28 04:38:47,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5013, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5346, PETRI_PLACES=223, PETRI_TRANSITIONS=357} [2024-06-28 04:38:47,787 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 166 predicate places. [2024-06-28 04:38:47,787 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 357 transitions, 5346 flow [2024-06-28 04:38:47,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:47,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:47,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:38:47,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:38:47,788 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:38:47,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:47,788 INFO L85 PathProgramCache]: Analyzing trace with hash 876079214, now seen corresponding path program 4 times [2024-06-28 04:38:47,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:47,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46004731] [2024-06-28 04:38:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:47,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:51,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:51,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46004731] [2024-06-28 04:38:51,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46004731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:51,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:51,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:51,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157943639] [2024-06-28 04:38:51,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:51,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:51,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:51,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:51,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:51,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-28 04:38:51,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 357 transitions, 5346 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:51,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:51,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-28 04:38:51,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand