./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe007_power.opt-thin001_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe007_power.opt-thin001_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:55:10,272 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:55:10,321 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:55:10,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:55:10,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:55:10,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:55:10,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:55:10,350 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:55:10,350 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:55:10,350 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:55:10,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:55:10,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:55:10,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:55:10,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:55:10,352 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:55:10,352 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:55:10,352 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:55:10,352 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:55:10,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:55:10,353 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:55:10,353 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:55:10,353 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:55:10,354 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:55:10,354 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:55:10,354 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:55:10,354 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:55:10,355 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:55:10,355 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:55:10,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:55:10,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:55:10,356 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:55:10,356 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:55:10,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:55:10,356 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:55:10,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:55:10,357 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:55:10,357 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:55:10,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:55:10,357 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:55:10,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:55:10,357 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:55:10,358 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:55:10,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:55:10,358 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:55:10,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:55:10,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:55:10,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:55:10,573 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:55:10,573 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:55:10,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe007_power.opt-thin001_power.opt.yml/witness.yml [2024-06-28 01:55:10,788 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:55:10,790 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:55:10,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i [2024-06-28 01:55:11,853 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:55:12,064 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:55:12,065 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i [2024-06-28 01:55:12,091 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3d01974/714e4d58bb42400bbdbdd823af209e82/FLAG698b93f4d [2024-06-28 01:55:12,102 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3d01974/714e4d58bb42400bbdbdd823af209e82 [2024-06-28 01:55:12,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:55:12,104 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:55:12,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:55:12,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:55:12,109 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:55:12,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:55:10" (1/2) ... [2024-06-28 01:55:12,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e672f73 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:55:12, skipping insertion in model container [2024-06-28 01:55:12,110 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:55:10" (1/2) ... [2024-06-28 01:55:12,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7a096d0e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:55:12, skipping insertion in model container [2024-06-28 01:55:12,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:55:12" (2/2) ... [2024-06-28 01:55:12,111 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e672f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12, skipping insertion in model container [2024-06-28 01:55:12,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:55:12" (2/2) ... [2024-06-28 01:55:12,112 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:55:12,236 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:55:12,237 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0) [2024-06-28 01:55:12,238 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0) [2024-06-28 01:55:12,238 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & y && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0) [2024-06-28 01:55:12,238 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:55:12,239 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-28 01:55:12,274 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:55:12,423 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i[969,982] [2024-06-28 01:55:12,555 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:55:12,567 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:55:12,604 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:55:12,725 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:55:12,771 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:55:12,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12 WrapperNode [2024-06-28 01:55:12,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:55:12,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:55:12,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:55:12,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:55:12,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (1/1) ... [2024-06-28 01:55:12,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (1/1) ... [2024-06-28 01:55:12,830 INFO L138 Inliner]: procedures = 175, calls = 83, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 251 [2024-06-28 01:55:12,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:55:12,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:55:12,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:55:12,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:55:12,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (1/1) ... [2024-06-28 01:55:12,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (1/1) ... [2024-06-28 01:55:12,844 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (1/1) ... [2024-06-28 01:55:12,866 INFO L175 MemorySlicer]: Split 42 memory accesses to 2 slices as follows [2, 40]. 95 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 01:55:12,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (1/1) ... [2024-06-28 01:55:12,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (1/1) ... [2024-06-28 01:55:12,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (1/1) ... [2024-06-28 01:55:12,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (1/1) ... [2024-06-28 01:55:12,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (1/1) ... [2024-06-28 01:55:12,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (1/1) ... [2024-06-28 01:55:12,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:55:12,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:55:12,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:55:12,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:55:12,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (1/1) ... [2024-06-28 01:55:12,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:55:12,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:55:12,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:55:12,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:55:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:55:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:55:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:55:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:55:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:55:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:55:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:55:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:55:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:55:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:55:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:55:12,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:55:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:55:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:55:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:55:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:55:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:55:12,989 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:55:13,160 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:55:13,161 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:55:13,573 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:55:13,573 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:55:13,893 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:55:13,893 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:55:13,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:55:13 BoogieIcfgContainer [2024-06-28 01:55:13,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:55:13,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:55:13,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:55:13,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:55:13,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:55:10" (1/4) ... [2024-06-28 01:55:13,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edcd3ae and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:55:13, skipping insertion in model container [2024-06-28 01:55:13,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:55:12" (2/4) ... [2024-06-28 01:55:13,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edcd3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:55:13, skipping insertion in model container [2024-06-28 01:55:13,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:55:12" (3/4) ... [2024-06-28 01:55:13,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edcd3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:55:13, skipping insertion in model container [2024-06-28 01:55:13,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:55:13" (4/4) ... [2024-06-28 01:55:13,904 INFO L112 eAbstractionObserver]: Analyzing ICFG safe007_power.opt-thin001_power.opt.i [2024-06-28 01:55:13,916 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:55:13,917 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:55:13,917 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:55:13,972 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:55:13,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:55:14,030 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:55:14,030 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:55:14,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-28 01:55:14,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:55:14,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:55:14,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:55:14,089 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;@4c1e43fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:55:14,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:55:14,094 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:55:14,094 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:55:14,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:55:14,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:14,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:55:14,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:14,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash 792009605, now seen corresponding path program 1 times [2024-06-28 01:55:14,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:14,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970469005] [2024-06-28 01:55:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:14,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:15,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:15,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970469005] [2024-06-28 01:55:15,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970469005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:15,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:15,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:55:15,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47823563] [2024-06-28 01:55:15,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:15,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:55:15,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:15,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:55:15,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:55:15,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:55:15,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:15,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:15,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:55:15,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:16,680 INFO L124 PetriNetUnfolderBase]: 3534/5564 cut-off events. [2024-06-28 01:55:16,681 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-28 01:55:16,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10739 conditions, 5564 events. 3534/5564 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 34457 event pairs, 2228 based on Foata normal form. 144/5134 useless extension candidates. Maximal degree in co-relation 10727. Up to 5098 conditions per place. [2024-06-28 01:55:16,706 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 46 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2024-06-28 01:55:16,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 243 flow [2024-06-28 01:55:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:55:16,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:55:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-28 01:55:16,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6597222222222222 [2024-06-28 01:55:16,716 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 95 transitions. [2024-06-28 01:55:16,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 243 flow [2024-06-28 01:55:16,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:16,720 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 138 flow [2024-06-28 01:55:16,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-28 01:55:16,724 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:55:16,724 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 138 flow [2024-06-28 01:55:16,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:16,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:16,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:16,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:55:16,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:16,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:16,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1790366435, now seen corresponding path program 1 times [2024-06-28 01:55:16,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:16,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809585530] [2024-06-28 01:55:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:16,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:18,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:18,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809585530] [2024-06-28 01:55:18,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809585530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:18,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:18,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:55:18,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397709990] [2024-06-28 01:55:18,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:55:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:18,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:55:18,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:55:18,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:55:18,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:18,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:18,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:55:18,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:19,385 INFO L124 PetriNetUnfolderBase]: 5299/8237 cut-off events. [2024-06-28 01:55:19,386 INFO L125 PetriNetUnfolderBase]: For 1082/1084 co-relation queries the response was YES. [2024-06-28 01:55:19,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17892 conditions, 8237 events. 5299/8237 cut-off events. For 1082/1084 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 49984 event pairs, 2404 based on Foata normal form. 5/7709 useless extension candidates. Maximal degree in co-relation 17880. Up to 7519 conditions per place. [2024-06-28 01:55:19,429 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 67 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2024-06-28 01:55:19,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 381 flow [2024-06-28 01:55:19,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:55:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:55:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-28 01:55:19,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-28 01:55:19,433 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 138 flow. Second operand 4 states and 118 transitions. [2024-06-28 01:55:19,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 381 flow [2024-06-28 01:55:19,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:55:19,437 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 206 flow [2024-06-28 01:55:19,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2024-06-28 01:55:19,439 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2024-06-28 01:55:19,439 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 206 flow [2024-06-28 01:55:19,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:19,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:19,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:19,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:55:19,445 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:19,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:19,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2043375770, now seen corresponding path program 1 times [2024-06-28 01:55:19,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:19,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10832326] [2024-06-28 01:55:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:21,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:21,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10832326] [2024-06-28 01:55:21,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10832326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:21,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:21,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:55:21,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42658148] [2024-06-28 01:55:21,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:21,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:55:21,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:21,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:55:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:55:21,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:55:21,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:21,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:21,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:55:21,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:22,108 INFO L124 PetriNetUnfolderBase]: 5290/8222 cut-off events. [2024-06-28 01:55:22,108 INFO L125 PetriNetUnfolderBase]: For 2925/2934 co-relation queries the response was YES. [2024-06-28 01:55:22,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19424 conditions, 8222 events. 5290/8222 cut-off events. For 2925/2934 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 49863 event pairs, 1836 based on Foata normal form. 14/7703 useless extension candidates. Maximal degree in co-relation 19409. Up to 7450 conditions per place. [2024-06-28 01:55:22,153 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 76 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2024-06-28 01:55:22,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 96 transitions, 476 flow [2024-06-28 01:55:22,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:55:22,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:55:22,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-06-28 01:55:22,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-06-28 01:55:22,157 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 206 flow. Second operand 5 states and 141 transitions. [2024-06-28 01:55:22,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 96 transitions, 476 flow [2024-06-28 01:55:22,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 96 transitions, 472 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:55:22,162 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 250 flow [2024-06-28 01:55:22,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-28 01:55:22,163 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-28 01:55:22,163 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 250 flow [2024-06-28 01:55:22,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:22,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:22,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:22,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:55:22,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:22,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:22,164 INFO L85 PathProgramCache]: Analyzing trace with hash 768857878, now seen corresponding path program 1 times [2024-06-28 01:55:22,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:22,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540922101] [2024-06-28 01:55:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:22,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:22,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:22,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540922101] [2024-06-28 01:55:22,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540922101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:22,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:22,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:55:22,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553029148] [2024-06-28 01:55:22,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:22,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:55:22,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:22,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:55:22,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:55:22,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-06-28 01:55:22,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:22,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:22,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-06-28 01:55:22,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:22,643 INFO L124 PetriNetUnfolderBase]: 1399/2580 cut-off events. [2024-06-28 01:55:22,644 INFO L125 PetriNetUnfolderBase]: For 1898/1983 co-relation queries the response was YES. [2024-06-28 01:55:22,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6200 conditions, 2580 events. 1399/2580 cut-off events. For 1898/1983 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17965 event pairs, 389 based on Foata normal form. 4/2490 useless extension candidates. Maximal degree in co-relation 6182. Up to 1526 conditions per place. [2024-06-28 01:55:22,657 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 51 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-06-28 01:55:22,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 412 flow [2024-06-28 01:55:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:55:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:55:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-28 01:55:22,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-06-28 01:55:22,659 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 250 flow. Second operand 3 states and 100 transitions. [2024-06-28 01:55:22,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 412 flow [2024-06-28 01:55:22,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 75 transitions, 382 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:22,664 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 218 flow [2024-06-28 01:55:22,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-06-28 01:55:22,665 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-06-28 01:55:22,665 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 218 flow [2024-06-28 01:55:22,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:22,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:22,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:22,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:55:22,667 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:22,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:22,667 INFO L85 PathProgramCache]: Analyzing trace with hash 96482725, now seen corresponding path program 1 times [2024-06-28 01:55:22,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:22,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472772369] [2024-06-28 01:55:22,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:22,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:24,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:24,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472772369] [2024-06-28 01:55:24,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472772369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:24,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:24,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:55:24,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972880474] [2024-06-28 01:55:24,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:24,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:55:24,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:24,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:55:24,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:55:24,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:55:24,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:24,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:24,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:55:24,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:25,321 INFO L124 PetriNetUnfolderBase]: 3514/5531 cut-off events. [2024-06-28 01:55:25,321 INFO L125 PetriNetUnfolderBase]: For 4027/4029 co-relation queries the response was YES. [2024-06-28 01:55:25,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14094 conditions, 5531 events. 3514/5531 cut-off events. For 4027/4029 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 33105 event pairs, 1744 based on Foata normal form. 4/5389 useless extension candidates. Maximal degree in co-relation 14075. Up to 5032 conditions per place. [2024-06-28 01:55:25,341 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 68 selfloop transitions, 12 changer transitions 1/89 dead transitions. [2024-06-28 01:55:25,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 490 flow [2024-06-28 01:55:25,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:55:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:55:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 01:55:25,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-28 01:55:25,347 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 218 flow. Second operand 5 states and 121 transitions. [2024-06-28 01:55:25,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 490 flow [2024-06-28 01:55:25,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 89 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:55:25,354 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 325 flow [2024-06-28 01:55:25,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-06-28 01:55:25,356 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-06-28 01:55:25,356 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 325 flow [2024-06-28 01:55:25,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:25,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:25,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:25,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:55:25,356 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:25,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:25,357 INFO L85 PathProgramCache]: Analyzing trace with hash -16135964, now seen corresponding path program 1 times [2024-06-28 01:55:25,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:25,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033234485] [2024-06-28 01:55:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:25,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:27,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:27,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033234485] [2024-06-28 01:55:27,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033234485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:27,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:27,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:27,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580665475] [2024-06-28 01:55:27,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:27,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:27,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:27,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:27,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:27,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:55:27,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:27,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:27,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:55:27,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:28,409 INFO L124 PetriNetUnfolderBase]: 3161/5032 cut-off events. [2024-06-28 01:55:28,409 INFO L125 PetriNetUnfolderBase]: For 5520/5526 co-relation queries the response was YES. [2024-06-28 01:55:28,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13910 conditions, 5032 events. 3161/5032 cut-off events. For 5520/5526 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30248 event pairs, 1461 based on Foata normal form. 8/4894 useless extension candidates. Maximal degree in co-relation 13888. Up to 4509 conditions per place. [2024-06-28 01:55:28,432 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 70 selfloop transitions, 26 changer transitions 0/104 dead transitions. [2024-06-28 01:55:28,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 104 transitions, 647 flow [2024-06-28 01:55:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:55:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:55:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:55:28,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:55:28,434 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 325 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:55:28,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 104 transitions, 647 flow [2024-06-28 01:55:28,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 104 transitions, 621 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 01:55:28,438 INFO L231 Difference]: Finished difference. Result has 68 places, 74 transitions, 439 flow [2024-06-28 01:55:28,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=68, PETRI_TRANSITIONS=74} [2024-06-28 01:55:28,439 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 01:55:28,439 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 74 transitions, 439 flow [2024-06-28 01:55:28,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:28,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:28,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:28,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:55:28,440 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:28,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:28,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1397758889, now seen corresponding path program 1 times [2024-06-28 01:55:28,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:28,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816577829] [2024-06-28 01:55:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:28,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:29,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:29,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816577829] [2024-06-28 01:55:29,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816577829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:29,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:29,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:29,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470461026] [2024-06-28 01:55:29,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:29,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:29,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:29,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:29,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:29,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:55:29,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 439 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:29,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:29,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:55:29,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:31,370 INFO L124 PetriNetUnfolderBase]: 4057/6408 cut-off events. [2024-06-28 01:55:31,371 INFO L125 PetriNetUnfolderBase]: For 10547/10588 co-relation queries the response was YES. [2024-06-28 01:55:31,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18928 conditions, 6408 events. 4057/6408 cut-off events. For 10547/10588 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38039 event pairs, 1598 based on Foata normal form. 32/6258 useless extension candidates. Maximal degree in co-relation 18903. Up to 5682 conditions per place. [2024-06-28 01:55:31,443 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 86 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2024-06-28 01:55:31,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 119 transitions, 835 flow [2024-06-28 01:55:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:55:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:55:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:55:31,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 01:55:31,452 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 439 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:55:31,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 119 transitions, 835 flow [2024-06-28 01:55:31,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 119 transitions, 786 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 01:55:31,482 INFO L231 Difference]: Finished difference. Result has 72 places, 82 transitions, 523 flow [2024-06-28 01:55:31,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=523, PETRI_PLACES=72, PETRI_TRANSITIONS=82} [2024-06-28 01:55:31,482 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-06-28 01:55:31,483 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 82 transitions, 523 flow [2024-06-28 01:55:31,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:31,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:31,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:31,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:55:31,483 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:31,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:31,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1439422889, now seen corresponding path program 2 times [2024-06-28 01:55:31,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:31,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542808026] [2024-06-28 01:55:31,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:31,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:33,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:33,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542808026] [2024-06-28 01:55:33,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542808026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:33,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:33,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:55:33,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709323404] [2024-06-28 01:55:33,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:33,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:55:33,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:55:33,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:55:33,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:55:33,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 82 transitions, 523 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:33,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:33,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:55:33,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:34,389 INFO L124 PetriNetUnfolderBase]: 4052/6401 cut-off events. [2024-06-28 01:55:34,390 INFO L125 PetriNetUnfolderBase]: For 14052/14098 co-relation queries the response was YES. [2024-06-28 01:55:34,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20121 conditions, 6401 events. 4052/6401 cut-off events. For 14052/14098 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38022 event pairs, 1600 based on Foata normal form. 35/6254 useless extension candidates. Maximal degree in co-relation 20094. Up to 5696 conditions per place. [2024-06-28 01:55:34,419 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 79 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2024-06-28 01:55:34,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 108 transitions, 787 flow [2024-06-28 01:55:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:55:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:55:34,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-28 01:55:34,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:55:34,421 INFO L175 Difference]: Start difference. First operand has 72 places, 82 transitions, 523 flow. Second operand 5 states and 123 transitions. [2024-06-28 01:55:34,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 108 transitions, 787 flow [2024-06-28 01:55:34,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 108 transitions, 730 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-28 01:55:34,434 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 526 flow [2024-06-28 01:55:34,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=526, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-06-28 01:55:34,436 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-28 01:55:34,436 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 526 flow [2024-06-28 01:55:34,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:34,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:34,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:34,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:55:34,436 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:34,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:34,437 INFO L85 PathProgramCache]: Analyzing trace with hash -500212926, now seen corresponding path program 1 times [2024-06-28 01:55:34,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:34,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281214841] [2024-06-28 01:55:34,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:34,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:36,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:36,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:36,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281214841] [2024-06-28 01:55:36,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281214841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:36,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:36,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:36,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403962478] [2024-06-28 01:55:36,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:36,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:36,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:36,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:36,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:36,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:55:36,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 526 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:36,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:36,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:55:36,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:37,710 INFO L124 PetriNetUnfolderBase]: 3174/5058 cut-off events. [2024-06-28 01:55:37,710 INFO L125 PetriNetUnfolderBase]: For 12931/12937 co-relation queries the response was YES. [2024-06-28 01:55:37,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16549 conditions, 5058 events. 3174/5058 cut-off events. For 12931/12937 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 30444 event pairs, 1351 based on Foata normal form. 10/4922 useless extension candidates. Maximal degree in co-relation 16520. Up to 4488 conditions per place. [2024-06-28 01:55:37,736 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 88 selfloop transitions, 29 changer transitions 0/125 dead transitions. [2024-06-28 01:55:37,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 125 transitions, 892 flow [2024-06-28 01:55:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:55:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:55:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:55:37,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:55:37,738 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 526 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:55:37,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 125 transitions, 892 flow [2024-06-28 01:55:37,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 125 transitions, 848 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:55:37,747 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 590 flow [2024-06-28 01:55:37,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2024-06-28 01:55:37,748 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-28 01:55:37,748 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 590 flow [2024-06-28 01:55:37,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:37,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:37,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:37,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:55:37,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:37,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:37,749 INFO L85 PathProgramCache]: Analyzing trace with hash 380854495, now seen corresponding path program 1 times [2024-06-28 01:55:37,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:37,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395912608] [2024-06-28 01:55:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:37,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:39,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:39,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395912608] [2024-06-28 01:55:39,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395912608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:39,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:39,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:39,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030675756] [2024-06-28 01:55:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:39,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:39,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:39,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:39,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:39,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:55:39,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 590 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:39,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:39,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:55:39,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:40,761 INFO L124 PetriNetUnfolderBase]: 4062/6422 cut-off events. [2024-06-28 01:55:40,761 INFO L125 PetriNetUnfolderBase]: For 19339/19378 co-relation queries the response was YES. [2024-06-28 01:55:40,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21353 conditions, 6422 events. 4062/6422 cut-off events. For 19339/19378 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38140 event pairs, 1524 based on Foata normal form. 35/6275 useless extension candidates. Maximal degree in co-relation 21323. Up to 5685 conditions per place. [2024-06-28 01:55:40,794 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 113 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2024-06-28 01:55:40,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 143 transitions, 1078 flow [2024-06-28 01:55:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:55:40,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:55:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:55:40,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-28 01:55:40,796 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 590 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:55:40,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 143 transitions, 1078 flow [2024-06-28 01:55:40,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 143 transitions, 994 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:55:40,813 INFO L231 Difference]: Finished difference. Result has 82 places, 100 transitions, 718 flow [2024-06-28 01:55:40,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=718, PETRI_PLACES=82, PETRI_TRANSITIONS=100} [2024-06-28 01:55:40,814 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-06-28 01:55:40,815 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 100 transitions, 718 flow [2024-06-28 01:55:40,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:40,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:40,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:40,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:55:40,815 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:40,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:40,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1672445005, now seen corresponding path program 2 times [2024-06-28 01:55:40,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:40,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653022243] [2024-06-28 01:55:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:40,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:42,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:42,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653022243] [2024-06-28 01:55:42,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653022243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:42,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:42,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:42,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539694311] [2024-06-28 01:55:42,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:42,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:42,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:42,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:42,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:42,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:55:42,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 100 transitions, 718 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:42,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:42,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:55:42,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:43,852 INFO L124 PetriNetUnfolderBase]: 4091/6463 cut-off events. [2024-06-28 01:55:43,852 INFO L125 PetriNetUnfolderBase]: For 25129/25178 co-relation queries the response was YES. [2024-06-28 01:55:43,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22887 conditions, 6463 events. 4091/6463 cut-off events. For 25129/25178 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38477 event pairs, 1522 based on Foata normal form. 44/6325 useless extension candidates. Maximal degree in co-relation 22854. Up to 5675 conditions per place. [2024-06-28 01:55:43,882 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 121 selfloop transitions, 27 changer transitions 0/155 dead transitions. [2024-06-28 01:55:43,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 155 transitions, 1275 flow [2024-06-28 01:55:43,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:55:43,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:55:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:55:43,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-28 01:55:43,884 INFO L175 Difference]: Start difference. First operand has 82 places, 100 transitions, 718 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:55:43,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 155 transitions, 1275 flow [2024-06-28 01:55:43,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 155 transitions, 1208 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:43,906 INFO L231 Difference]: Finished difference. Result has 86 places, 108 transitions, 826 flow [2024-06-28 01:55:43,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=826, PETRI_PLACES=86, PETRI_TRANSITIONS=108} [2024-06-28 01:55:43,906 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-28 01:55:43,906 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 108 transitions, 826 flow [2024-06-28 01:55:43,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:43,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:43,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:43,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:55:43,907 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:43,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:43,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1672438495, now seen corresponding path program 3 times [2024-06-28 01:55:43,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:43,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127045618] [2024-06-28 01:55:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:43,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:45,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127045618] [2024-06-28 01:55:45,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127045618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:45,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:45,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:45,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927254002] [2024-06-28 01:55:45,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:45,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:45,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:55:45,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 108 transitions, 826 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:45,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:45,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:55:45,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:46,869 INFO L124 PetriNetUnfolderBase]: 4086/6455 cut-off events. [2024-06-28 01:55:46,869 INFO L125 PetriNetUnfolderBase]: For 30981/31030 co-relation queries the response was YES. [2024-06-28 01:55:46,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23928 conditions, 6455 events. 4086/6455 cut-off events. For 30981/31030 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38364 event pairs, 1527 based on Foata normal form. 44/6317 useless extension candidates. Maximal degree in co-relation 23894. Up to 5735 conditions per place. [2024-06-28 01:55:46,900 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 117 selfloop transitions, 19 changer transitions 0/143 dead transitions. [2024-06-28 01:55:46,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 143 transitions, 1187 flow [2024-06-28 01:55:46,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:55:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:55:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:55:46,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:55:46,902 INFO L175 Difference]: Start difference. First operand has 86 places, 108 transitions, 826 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:55:46,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 143 transitions, 1187 flow [2024-06-28 01:55:46,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 143 transitions, 1093 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:46,936 INFO L231 Difference]: Finished difference. Result has 89 places, 108 transitions, 779 flow [2024-06-28 01:55:46,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=779, PETRI_PLACES=89, PETRI_TRANSITIONS=108} [2024-06-28 01:55:46,937 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-28 01:55:46,937 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 108 transitions, 779 flow [2024-06-28 01:55:46,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:46,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:46,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:46,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:55:46,937 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:46,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:46,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2120261069, now seen corresponding path program 1 times [2024-06-28 01:55:46,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:46,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900507543] [2024-06-28 01:55:46,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:46,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:48,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:48,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900507543] [2024-06-28 01:55:48,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900507543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:48,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:48,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:55:48,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483901626] [2024-06-28 01:55:48,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:48,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:55:48,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:48,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:55:48,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:55:48,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:55:48,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 108 transitions, 779 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:48,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:48,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:55:48,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:49,805 INFO L124 PetriNetUnfolderBase]: 3036/4903 cut-off events. [2024-06-28 01:55:49,805 INFO L125 PetriNetUnfolderBase]: For 27853/27855 co-relation queries the response was YES. [2024-06-28 01:55:49,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19128 conditions, 4903 events. 3036/4903 cut-off events. For 27853/27855 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29589 event pairs, 1302 based on Foata normal form. 2/4746 useless extension candidates. Maximal degree in co-relation 19092. Up to 4346 conditions per place. [2024-06-28 01:55:49,831 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 103 selfloop transitions, 18 changer transitions 0/134 dead transitions. [2024-06-28 01:55:49,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 134 transitions, 1143 flow [2024-06-28 01:55:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:55:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:55:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 01:55:49,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-28 01:55:49,832 INFO L175 Difference]: Start difference. First operand has 89 places, 108 transitions, 779 flow. Second operand 5 states and 121 transitions. [2024-06-28 01:55:49,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 134 transitions, 1143 flow [2024-06-28 01:55:49,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 134 transitions, 1088 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:55:49,852 INFO L231 Difference]: Finished difference. Result has 90 places, 114 transitions, 846 flow [2024-06-28 01:55:49,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=846, PETRI_PLACES=90, PETRI_TRANSITIONS=114} [2024-06-28 01:55:49,852 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-28 01:55:49,852 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 114 transitions, 846 flow [2024-06-28 01:55:49,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:49,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:49,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:49,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:55:49,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:49,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:49,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1081273528, now seen corresponding path program 1 times [2024-06-28 01:55:49,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:49,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181108797] [2024-06-28 01:55:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:49,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:51,656 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 01:55:51,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:51,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181108797] [2024-06-28 01:55:51,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181108797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:51,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:51,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:51,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027059907] [2024-06-28 01:55:51,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:51,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:51,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:51,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:51,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:51,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:55:51,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 114 transitions, 846 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:51,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:51,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:55:51,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:53,238 INFO L124 PetriNetUnfolderBase]: 4116/6501 cut-off events. [2024-06-28 01:55:53,239 INFO L125 PetriNetUnfolderBase]: For 37350/37393 co-relation queries the response was YES. [2024-06-28 01:55:53,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25433 conditions, 6501 events. 4116/6501 cut-off events. For 37350/37393 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38508 event pairs, 1076 based on Foata normal form. 43/6362 useless extension candidates. Maximal degree in co-relation 25395. Up to 5612 conditions per place. [2024-06-28 01:55:53,360 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 118 selfloop transitions, 42 changer transitions 0/167 dead transitions. [2024-06-28 01:55:53,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 167 transitions, 1430 flow [2024-06-28 01:55:53,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:55:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:55:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:55:53,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 01:55:53,362 INFO L175 Difference]: Start difference. First operand has 90 places, 114 transitions, 846 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:55:53,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 167 transitions, 1430 flow [2024-06-28 01:55:53,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 167 transitions, 1416 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:55:53,401 INFO L231 Difference]: Finished difference. Result has 96 places, 120 transitions, 1030 flow [2024-06-28 01:55:53,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1030, PETRI_PLACES=96, PETRI_TRANSITIONS=120} [2024-06-28 01:55:53,402 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-28 01:55:53,402 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 120 transitions, 1030 flow [2024-06-28 01:55:53,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:53,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:53,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:53,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:55:53,403 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:53,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:53,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1078416568, now seen corresponding path program 2 times [2024-06-28 01:55:53,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:53,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150829099] [2024-06-28 01:55:53,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:53,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:55,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:55,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150829099] [2024-06-28 01:55:55,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150829099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:55,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:55,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:55,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998908454] [2024-06-28 01:55:55,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:55,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:55,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:55,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:55,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:55,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:55:55,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 120 transitions, 1030 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:55,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:55,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:55:55,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:56,784 INFO L124 PetriNetUnfolderBase]: 4158/6563 cut-off events. [2024-06-28 01:55:56,784 INFO L125 PetriNetUnfolderBase]: For 43942/43985 co-relation queries the response was YES. [2024-06-28 01:55:56,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26728 conditions, 6563 events. 4158/6563 cut-off events. For 43942/43985 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38860 event pairs, 1425 based on Foata normal form. 43/6424 useless extension candidates. Maximal degree in co-relation 26687. Up to 5792 conditions per place. [2024-06-28 01:55:56,822 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 121 selfloop transitions, 38 changer transitions 0/166 dead transitions. [2024-06-28 01:55:56,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 166 transitions, 1508 flow [2024-06-28 01:55:56,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:55:56,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:55:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:55:56,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:55:56,826 INFO L175 Difference]: Start difference. First operand has 96 places, 120 transitions, 1030 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:55:56,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 166 transitions, 1508 flow [2024-06-28 01:55:56,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 166 transitions, 1390 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:56,877 INFO L231 Difference]: Finished difference. Result has 100 places, 123 transitions, 1059 flow [2024-06-28 01:55:56,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1059, PETRI_PLACES=100, PETRI_TRANSITIONS=123} [2024-06-28 01:55:56,893 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-28 01:55:56,894 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 123 transitions, 1059 flow [2024-06-28 01:55:56,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:56,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:56,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:56,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:55:56,894 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:56,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:56,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1078410616, now seen corresponding path program 1 times [2024-06-28 01:55:56,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:56,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819534543] [2024-06-28 01:55:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:56,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:59,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:59,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:59,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819534543] [2024-06-28 01:55:59,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819534543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:59,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:59,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:59,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533631394] [2024-06-28 01:55:59,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:59,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:59,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:59,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:59,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:59,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:55:59,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 123 transitions, 1059 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:59,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:59,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:55:59,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:00,944 INFO L124 PetriNetUnfolderBase]: 4396/6921 cut-off events. [2024-06-28 01:56:00,944 INFO L125 PetriNetUnfolderBase]: For 47567/47598 co-relation queries the response was YES. [2024-06-28 01:56:00,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28975 conditions, 6921 events. 4396/6921 cut-off events. For 47567/47598 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 40848 event pairs, 1394 based on Foata normal form. 32/6772 useless extension candidates. Maximal degree in co-relation 28932. Up to 6026 conditions per place. [2024-06-28 01:56:00,987 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 171 selfloop transitions, 59 changer transitions 0/237 dead transitions. [2024-06-28 01:56:00,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 237 transitions, 2194 flow [2024-06-28 01:56:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:56:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:56:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-06-28 01:56:00,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:56:00,990 INFO L175 Difference]: Start difference. First operand has 100 places, 123 transitions, 1059 flow. Second operand 10 states and 240 transitions. [2024-06-28 01:56:00,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 237 transitions, 2194 flow [2024-06-28 01:56:01,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 237 transitions, 2047 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:56:01,039 INFO L231 Difference]: Finished difference. Result has 110 places, 166 transitions, 1604 flow [2024-06-28 01:56:01,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1604, PETRI_PLACES=110, PETRI_TRANSITIONS=166} [2024-06-28 01:56:01,040 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-28 01:56:01,040 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 166 transitions, 1604 flow [2024-06-28 01:56:01,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:01,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:01,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:01,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:56:01,041 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:01,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1684269290, now seen corresponding path program 2 times [2024-06-28 01:56:01,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:01,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517419867] [2024-06-28 01:56:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:01,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:03,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:03,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517419867] [2024-06-28 01:56:03,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517419867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:03,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:03,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:03,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173424365] [2024-06-28 01:56:03,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:03,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:03,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:03,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:03,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:03,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:03,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 166 transitions, 1604 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:03,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:03,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:03,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:04,903 INFO L124 PetriNetUnfolderBase]: 4425/6972 cut-off events. [2024-06-28 01:56:04,904 INFO L125 PetriNetUnfolderBase]: For 55084/55163 co-relation queries the response was YES. [2024-06-28 01:56:04,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31222 conditions, 6972 events. 4425/6972 cut-off events. For 55084/55163 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41126 event pairs, 1371 based on Foata normal form. 73/6862 useless extension candidates. Maximal degree in co-relation 31173. Up to 5996 conditions per place. [2024-06-28 01:56:04,950 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 142 selfloop transitions, 80 changer transitions 0/229 dead transitions. [2024-06-28 01:56:04,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 229 transitions, 2368 flow [2024-06-28 01:56:04,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:04,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:56:04,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:56:04,952 INFO L175 Difference]: Start difference. First operand has 110 places, 166 transitions, 1604 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:56:04,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 229 transitions, 2368 flow [2024-06-28 01:56:05,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 229 transitions, 2265 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-28 01:56:05,019 INFO L231 Difference]: Finished difference. Result has 117 places, 174 transitions, 1842 flow [2024-06-28 01:56:05,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1842, PETRI_PLACES=117, PETRI_TRANSITIONS=174} [2024-06-28 01:56:05,019 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-28 01:56:05,020 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 174 transitions, 1842 flow [2024-06-28 01:56:05,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:05,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:05,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:05,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:56:05,021 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:05,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:05,021 INFO L85 PathProgramCache]: Analyzing trace with hash -825244422, now seen corresponding path program 3 times [2024-06-28 01:56:05,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:05,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029821881] [2024-06-28 01:56:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:05,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:07,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:07,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029821881] [2024-06-28 01:56:07,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029821881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:07,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:07,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:07,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634872509] [2024-06-28 01:56:07,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:07,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:07,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:07,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:07,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:07,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:07,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 174 transitions, 1842 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:07,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:07,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:07,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:08,615 INFO L124 PetriNetUnfolderBase]: 4417/6960 cut-off events. [2024-06-28 01:56:08,615 INFO L125 PetriNetUnfolderBase]: For 64704/64783 co-relation queries the response was YES. [2024-06-28 01:56:08,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32566 conditions, 6960 events. 4417/6960 cut-off events. For 64704/64783 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 41081 event pairs, 1030 based on Foata normal form. 75/6852 useless extension candidates. Maximal degree in co-relation 32514. Up to 5994 conditions per place. [2024-06-28 01:56:08,660 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 153 selfloop transitions, 53 changer transitions 0/213 dead transitions. [2024-06-28 01:56:08,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 213 transitions, 2384 flow [2024-06-28 01:56:08,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:56:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:56:08,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:56:08,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 01:56:08,661 INFO L175 Difference]: Start difference. First operand has 117 places, 174 transitions, 1842 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:56:08,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 213 transitions, 2384 flow [2024-06-28 01:56:08,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 213 transitions, 2184 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-28 01:56:08,740 INFO L231 Difference]: Finished difference. Result has 119 places, 174 transitions, 1766 flow [2024-06-28 01:56:08,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1766, PETRI_PLACES=119, PETRI_TRANSITIONS=174} [2024-06-28 01:56:08,740 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-06-28 01:56:08,741 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 174 transitions, 1766 flow [2024-06-28 01:56:08,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:08,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:08,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:08,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:56:08,741 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:08,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:08,742 INFO L85 PathProgramCache]: Analyzing trace with hash -29754390, now seen corresponding path program 3 times [2024-06-28 01:56:08,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:08,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237909637] [2024-06-28 01:56:08,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:08,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:11,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:11,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237909637] [2024-06-28 01:56:11,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237909637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:11,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:11,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:11,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497471501] [2024-06-28 01:56:11,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:11,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:11,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:11,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:11,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:11,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:11,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 174 transitions, 1766 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:11,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:11,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:11,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:12,554 INFO L124 PetriNetUnfolderBase]: 4443/6847 cut-off events. [2024-06-28 01:56:12,554 INFO L125 PetriNetUnfolderBase]: For 67993/68072 co-relation queries the response was YES. [2024-06-28 01:56:12,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32927 conditions, 6847 events. 4443/6847 cut-off events. For 67993/68072 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39728 event pairs, 1365 based on Foata normal form. 73/6787 useless extension candidates. Maximal degree in co-relation 32873. Up to 5946 conditions per place. [2024-06-28 01:56:12,600 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 162 selfloop transitions, 77 changer transitions 0/246 dead transitions. [2024-06-28 01:56:12,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 246 transitions, 2742 flow [2024-06-28 01:56:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:12,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:56:12,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 01:56:12,602 INFO L175 Difference]: Start difference. First operand has 119 places, 174 transitions, 1766 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:56:12,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 246 transitions, 2742 flow [2024-06-28 01:56:12,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 246 transitions, 2623 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:56:12,662 INFO L231 Difference]: Finished difference. Result has 123 places, 186 transitions, 2078 flow [2024-06-28 01:56:12,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2078, PETRI_PLACES=123, PETRI_TRANSITIONS=186} [2024-06-28 01:56:12,662 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 69 predicate places. [2024-06-28 01:56:12,662 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 186 transitions, 2078 flow [2024-06-28 01:56:12,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:12,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:12,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:12,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:56:12,663 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:12,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:12,663 INFO L85 PathProgramCache]: Analyzing trace with hash -29761830, now seen corresponding path program 4 times [2024-06-28 01:56:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:12,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640779146] [2024-06-28 01:56:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:14,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:14,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640779146] [2024-06-28 01:56:14,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640779146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:14,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:14,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:14,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523621125] [2024-06-28 01:56:14,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:14,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:14,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:14,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:14,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:14,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:14,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 186 transitions, 2078 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:14,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:14,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:14,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:16,371 INFO L124 PetriNetUnfolderBase]: 4472/6888 cut-off events. [2024-06-28 01:56:16,372 INFO L125 PetriNetUnfolderBase]: For 79063/79142 co-relation queries the response was YES. [2024-06-28 01:56:16,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34738 conditions, 6888 events. 4472/6888 cut-off events. For 79063/79142 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 39926 event pairs, 1369 based on Foata normal form. 73/6828 useless extension candidates. Maximal degree in co-relation 34682. Up to 6067 conditions per place. [2024-06-28 01:56:16,419 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 169 selfloop transitions, 75 changer transitions 0/251 dead transitions. [2024-06-28 01:56:16,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 251 transitions, 2934 flow [2024-06-28 01:56:16,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:16,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:16,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:56:16,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-28 01:56:16,421 INFO L175 Difference]: Start difference. First operand has 123 places, 186 transitions, 2078 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:56:16,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 251 transitions, 2934 flow [2024-06-28 01:56:16,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 251 transitions, 2658 flow, removed 111 selfloop flow, removed 3 redundant places. [2024-06-28 01:56:16,594 INFO L231 Difference]: Finished difference. Result has 128 places, 194 transitions, 2146 flow [2024-06-28 01:56:16,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2146, PETRI_PLACES=128, PETRI_TRANSITIONS=194} [2024-06-28 01:56:16,594 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-28 01:56:16,594 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 194 transitions, 2146 flow [2024-06-28 01:56:16,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:16,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:16,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:16,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:56:16,595 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:16,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash -29963640, now seen corresponding path program 5 times [2024-06-28 01:56:16,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:16,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822118447] [2024-06-28 01:56:16,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:16,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:18,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:18,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822118447] [2024-06-28 01:56:18,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822118447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:18,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:18,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:18,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536005207] [2024-06-28 01:56:18,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:18,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:18,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:18,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 194 transitions, 2146 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:18,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:18,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:18,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:20,260 INFO L124 PetriNetUnfolderBase]: 4470/6884 cut-off events. [2024-06-28 01:56:20,260 INFO L125 PetriNetUnfolderBase]: For 78866/78945 co-relation queries the response was YES. [2024-06-28 01:56:20,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34650 conditions, 6884 events. 4470/6884 cut-off events. For 78866/78945 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 39917 event pairs, 1373 based on Foata normal form. 73/6824 useless extension candidates. Maximal degree in co-relation 34592. Up to 6162 conditions per place. [2024-06-28 01:56:20,301 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 192 selfloop transitions, 46 changer transitions 0/245 dead transitions. [2024-06-28 01:56:20,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 245 transitions, 2849 flow [2024-06-28 01:56:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:56:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:56:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:56:20,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:56:20,303 INFO L175 Difference]: Start difference. First operand has 128 places, 194 transitions, 2146 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:56:20,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 245 transitions, 2849 flow [2024-06-28 01:56:20,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 245 transitions, 2577 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-28 01:56:20,396 INFO L231 Difference]: Finished difference. Result has 130 places, 198 transitions, 2051 flow [2024-06-28 01:56:20,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2051, PETRI_PLACES=130, PETRI_TRANSITIONS=198} [2024-06-28 01:56:20,397 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-28 01:56:20,397 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 198 transitions, 2051 flow [2024-06-28 01:56:20,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:20,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:20,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:20,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:56:20,398 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:20,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1303585211, now seen corresponding path program 1 times [2024-06-28 01:56:20,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:20,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225126966] [2024-06-28 01:56:20,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:20,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:22,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:22,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225126966] [2024-06-28 01:56:22,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225126966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:22,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:22,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:56:22,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539762940] [2024-06-28 01:56:22,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:22,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:56:22,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:22,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:56:22,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:56:22,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:56:22,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 198 transitions, 2051 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:22,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:22,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:56:22,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:23,830 INFO L124 PetriNetUnfolderBase]: 4202/6685 cut-off events. [2024-06-28 01:56:23,830 INFO L125 PetriNetUnfolderBase]: For 80099/80211 co-relation queries the response was YES. [2024-06-28 01:56:23,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33188 conditions, 6685 events. 4202/6685 cut-off events. For 80099/80211 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 39848 event pairs, 1322 based on Foata normal form. 98/6578 useless extension candidates. Maximal degree in co-relation 33129. Up to 5898 conditions per place. [2024-06-28 01:56:23,878 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 209 selfloop transitions, 18 changer transitions 0/240 dead transitions. [2024-06-28 01:56:23,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 240 transitions, 2776 flow [2024-06-28 01:56:23,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:56:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:56:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:56:23,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-06-28 01:56:23,880 INFO L175 Difference]: Start difference. First operand has 130 places, 198 transitions, 2051 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:56:23,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 240 transitions, 2776 flow [2024-06-28 01:56:23,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 240 transitions, 2675 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:56:23,957 INFO L231 Difference]: Finished difference. Result has 133 places, 210 transitions, 2145 flow [2024-06-28 01:56:23,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2145, PETRI_PLACES=133, PETRI_TRANSITIONS=210} [2024-06-28 01:56:23,958 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2024-06-28 01:56:23,958 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 210 transitions, 2145 flow [2024-06-28 01:56:23,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:23,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:23,959 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 01:56:23,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:56:23,959 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:23,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash 583992062, now seen corresponding path program 1 times [2024-06-28 01:56:23,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:23,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134814677] [2024-06-28 01:56:23,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:23,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:25,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:25,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:25,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134814677] [2024-06-28 01:56:25,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134814677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:25,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:25,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:25,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047140914] [2024-06-28 01:56:25,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:25,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:25,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:25,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:25,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:25,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 210 transitions, 2145 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:25,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:25,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:25,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:27,452 INFO L124 PetriNetUnfolderBase]: 4500/6961 cut-off events. [2024-06-28 01:56:27,453 INFO L125 PetriNetUnfolderBase]: For 84126/84207 co-relation queries the response was YES. [2024-06-28 01:56:27,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35750 conditions, 6961 events. 4500/6961 cut-off events. For 84126/84207 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 40508 event pairs, 919 based on Foata normal form. 77/6895 useless extension candidates. Maximal degree in co-relation 35688. Up to 5947 conditions per place. [2024-06-28 01:56:27,502 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 210 selfloop transitions, 61 changer transitions 0/278 dead transitions. [2024-06-28 01:56:27,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 278 transitions, 2987 flow [2024-06-28 01:56:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:56:27,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 01:56:27,503 INFO L175 Difference]: Start difference. First operand has 133 places, 210 transitions, 2145 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:56:27,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 278 transitions, 2987 flow [2024-06-28 01:56:27,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 278 transitions, 2977 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:56:27,601 INFO L231 Difference]: Finished difference. Result has 142 places, 223 transitions, 2444 flow [2024-06-28 01:56:27,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2135, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2444, PETRI_PLACES=142, PETRI_TRANSITIONS=223} [2024-06-28 01:56:27,602 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 88 predicate places. [2024-06-28 01:56:27,603 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 223 transitions, 2444 flow [2024-06-28 01:56:27,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:27,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:27,603 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 01:56:27,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:56:27,603 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:27,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:27,604 INFO L85 PathProgramCache]: Analyzing trace with hash -895553282, now seen corresponding path program 2 times [2024-06-28 01:56:27,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:27,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396250631] [2024-06-28 01:56:27,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:27,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:29,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:29,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396250631] [2024-06-28 01:56:29,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396250631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:29,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:29,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:29,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073288085] [2024-06-28 01:56:29,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:29,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:29,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:29,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:29,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:29,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:29,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 223 transitions, 2444 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:29,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:29,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:29,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:32,009 INFO L124 PetriNetUnfolderBase]: 4542/7022 cut-off events. [2024-06-28 01:56:32,010 INFO L125 PetriNetUnfolderBase]: For 96742/96823 co-relation queries the response was YES. [2024-06-28 01:56:32,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37578 conditions, 7022 events. 4542/7022 cut-off events. For 96742/96823 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 40901 event pairs, 1265 based on Foata normal form. 77/6956 useless extension candidates. Maximal degree in co-relation 37511. Up to 6179 conditions per place. [2024-06-28 01:56:32,054 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 214 selfloop transitions, 61 changer transitions 0/282 dead transitions. [2024-06-28 01:56:32,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 282 transitions, 3261 flow [2024-06-28 01:56:32,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:32,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:56:32,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 01:56:32,056 INFO L175 Difference]: Start difference. First operand has 142 places, 223 transitions, 2444 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:56:32,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 282 transitions, 3261 flow [2024-06-28 01:56:32,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 282 transitions, 3087 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 01:56:32,160 INFO L231 Difference]: Finished difference. Result has 146 places, 226 transitions, 2483 flow [2024-06-28 01:56:32,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2483, PETRI_PLACES=146, PETRI_TRANSITIONS=226} [2024-06-28 01:56:32,161 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-28 01:56:32,161 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 226 transitions, 2483 flow [2024-06-28 01:56:32,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:32,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:32,161 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 01:56:32,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:56:32,162 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:32,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash 220553134, now seen corresponding path program 3 times [2024-06-28 01:56:32,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:32,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453239589] [2024-06-28 01:56:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:32,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:34,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:34,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453239589] [2024-06-28 01:56:34,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453239589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:34,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:34,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:34,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141266146] [2024-06-28 01:56:34,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:34,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:34,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:34,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:34,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:34,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:34,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 226 transitions, 2483 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:34,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:34,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:34,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:36,011 INFO L124 PetriNetUnfolderBase]: 4584/7084 cut-off events. [2024-06-28 01:56:36,012 INFO L125 PetriNetUnfolderBase]: For 107536/107617 co-relation queries the response was YES. [2024-06-28 01:56:36,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38586 conditions, 7084 events. 4584/7084 cut-off events. For 107536/107617 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41257 event pairs, 1260 based on Foata normal form. 77/7018 useless extension candidates. Maximal degree in co-relation 38518. Up to 6236 conditions per place. [2024-06-28 01:56:36,069 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 223 selfloop transitions, 56 changer transitions 0/286 dead transitions. [2024-06-28 01:56:36,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 286 transitions, 3308 flow [2024-06-28 01:56:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:56:36,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 01:56:36,070 INFO L175 Difference]: Start difference. First operand has 146 places, 226 transitions, 2483 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:56:36,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 286 transitions, 3308 flow [2024-06-28 01:56:36,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 286 transitions, 3121 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 01:56:36,191 INFO L231 Difference]: Finished difference. Result has 149 places, 230 transitions, 2516 flow [2024-06-28 01:56:36,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2516, PETRI_PLACES=149, PETRI_TRANSITIONS=230} [2024-06-28 01:56:36,192 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-28 01:56:36,192 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 230 transitions, 2516 flow [2024-06-28 01:56:36,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:36,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:36,192 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 01:56:36,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:56:36,193 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:36,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:36,193 INFO L85 PathProgramCache]: Analyzing trace with hash 220737708, now seen corresponding path program 1 times [2024-06-28 01:56:36,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:36,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549719209] [2024-06-28 01:56:36,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:36,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:38,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:38,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549719209] [2024-06-28 01:56:38,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549719209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:38,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:38,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:56:38,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077337027] [2024-06-28 01:56:38,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:38,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:56:38,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:38,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:56:38,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:56:38,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:38,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 230 transitions, 2516 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:38,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:38,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:38,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:40,712 INFO L124 PetriNetUnfolderBase]: 4735/7364 cut-off events. [2024-06-28 01:56:40,712 INFO L125 PetriNetUnfolderBase]: For 125857/125938 co-relation queries the response was YES. [2024-06-28 01:56:40,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40787 conditions, 7364 events. 4735/7364 cut-off events. For 125857/125938 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 43457 event pairs, 1278 based on Foata normal form. 89/7300 useless extension candidates. Maximal degree in co-relation 40717. Up to 6203 conditions per place. [2024-06-28 01:56:40,777 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 227 selfloop transitions, 70 changer transitions 0/304 dead transitions. [2024-06-28 01:56:40,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 304 transitions, 3461 flow [2024-06-28 01:56:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:56:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:56:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 01:56:40,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-28 01:56:40,779 INFO L175 Difference]: Start difference. First operand has 149 places, 230 transitions, 2516 flow. Second operand 9 states and 215 transitions. [2024-06-28 01:56:40,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 304 transitions, 3461 flow [2024-06-28 01:56:40,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 304 transitions, 3283 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 01:56:40,912 INFO L231 Difference]: Finished difference. Result has 154 places, 236 transitions, 2612 flow [2024-06-28 01:56:40,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2612, PETRI_PLACES=154, PETRI_TRANSITIONS=236} [2024-06-28 01:56:40,912 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-06-28 01:56:40,913 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 236 transitions, 2612 flow [2024-06-28 01:56:40,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:40,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:40,913 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 01:56:40,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:56:40,913 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:40,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:40,914 INFO L85 PathProgramCache]: Analyzing trace with hash -922621716, now seen corresponding path program 4 times [2024-06-28 01:56:40,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:40,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006950704] [2024-06-28 01:56:40,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:40,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:42,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:42,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006950704] [2024-06-28 01:56:42,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006950704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:42,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:42,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:42,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708620030] [2024-06-28 01:56:42,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:42,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:42,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:42,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:42,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:42,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:42,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 236 transitions, 2612 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:42,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:42,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:42,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:44,898 INFO L124 PetriNetUnfolderBase]: 4777/7427 cut-off events. [2024-06-28 01:56:44,898 INFO L125 PetriNetUnfolderBase]: For 133101/133182 co-relation queries the response was YES. [2024-06-28 01:56:44,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41711 conditions, 7427 events. 4777/7427 cut-off events. For 133101/133182 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 43878 event pairs, 1293 based on Foata normal form. 77/7351 useless extension candidates. Maximal degree in co-relation 41639. Up to 6533 conditions per place. [2024-06-28 01:56:44,951 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 237 selfloop transitions, 53 changer transitions 0/297 dead transitions. [2024-06-28 01:56:44,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 297 transitions, 3491 flow [2024-06-28 01:56:44,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:44,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:56:44,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:56:44,953 INFO L175 Difference]: Start difference. First operand has 154 places, 236 transitions, 2612 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:56:44,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 297 transitions, 3491 flow [2024-06-28 01:56:45,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 297 transitions, 3337 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:56:45,070 INFO L231 Difference]: Finished difference. Result has 156 places, 239 transitions, 2670 flow [2024-06-28 01:56:45,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2670, PETRI_PLACES=156, PETRI_TRANSITIONS=239} [2024-06-28 01:56:45,071 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 102 predicate places. [2024-06-28 01:56:45,071 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 239 transitions, 2670 flow [2024-06-28 01:56:45,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:45,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:45,071 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 01:56:45,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:56:45,072 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:45,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:45,072 INFO L85 PathProgramCache]: Analyzing trace with hash -928877826, now seen corresponding path program 5 times [2024-06-28 01:56:45,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:45,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727629269] [2024-06-28 01:56:45,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:45,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:47,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727629269] [2024-06-28 01:56:47,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727629269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:47,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:47,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234772054] [2024-06-28 01:56:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:47,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:47,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:47,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:47,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:47,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:47,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 239 transitions, 2670 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:47,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:47,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:47,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:48,905 INFO L124 PetriNetUnfolderBase]: 4819/7488 cut-off events. [2024-06-28 01:56:48,906 INFO L125 PetriNetUnfolderBase]: For 140902/140983 co-relation queries the response was YES. [2024-06-28 01:56:48,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42500 conditions, 7488 events. 4819/7488 cut-off events. For 140902/140983 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 44146 event pairs, 1310 based on Foata normal form. 77/7412 useless extension candidates. Maximal degree in co-relation 42427. Up to 6669 conditions per place. [2024-06-28 01:56:48,967 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 238 selfloop transitions, 45 changer transitions 0/290 dead transitions. [2024-06-28 01:56:48,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 290 transitions, 3503 flow [2024-06-28 01:56:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:56:48,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:56:48,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:56:48,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:56:48,968 INFO L175 Difference]: Start difference. First operand has 156 places, 239 transitions, 2670 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:56:48,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 290 transitions, 3503 flow [2024-06-28 01:56:49,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 290 transitions, 3315 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 01:56:49,128 INFO L231 Difference]: Finished difference. Result has 157 places, 242 transitions, 2684 flow [2024-06-28 01:56:49,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2482, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2684, PETRI_PLACES=157, PETRI_TRANSITIONS=242} [2024-06-28 01:56:49,133 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2024-06-28 01:56:49,133 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 242 transitions, 2684 flow [2024-06-28 01:56:49,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:49,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:49,133 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 01:56:49,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:56:49,134 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:49,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:49,134 INFO L85 PathProgramCache]: Analyzing trace with hash -929055456, now seen corresponding path program 6 times [2024-06-28 01:56:49,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:49,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492673117] [2024-06-28 01:56:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:49,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:51,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:51,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492673117] [2024-06-28 01:56:51,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492673117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:51,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:51,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:51,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103059811] [2024-06-28 01:56:51,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:51,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:51,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:51,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:51,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:51,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 242 transitions, 2684 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:51,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:51,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:51,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:53,027 INFO L124 PetriNetUnfolderBase]: 4816/7483 cut-off events. [2024-06-28 01:56:53,027 INFO L125 PetriNetUnfolderBase]: For 148709/148790 co-relation queries the response was YES. [2024-06-28 01:56:53,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42671 conditions, 7483 events. 4816/7483 cut-off events. For 148709/148790 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 44179 event pairs, 961 based on Foata normal form. 77/7407 useless extension candidates. Maximal degree in co-relation 42597. Up to 6568 conditions per place. [2024-06-28 01:56:53,084 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 240 selfloop transitions, 46 changer transitions 0/293 dead transitions. [2024-06-28 01:56:53,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 293 transitions, 3519 flow [2024-06-28 01:56:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:56:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:56:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:56:53,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:56:53,085 INFO L175 Difference]: Start difference. First operand has 157 places, 242 transitions, 2684 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:56:53,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 293 transitions, 3519 flow [2024-06-28 01:56:53,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 293 transitions, 3341 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 01:56:53,234 INFO L231 Difference]: Finished difference. Result has 159 places, 245 transitions, 2716 flow [2024-06-28 01:56:53,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2506, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2716, PETRI_PLACES=159, PETRI_TRANSITIONS=245} [2024-06-28 01:56:53,235 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 105 predicate places. [2024-06-28 01:56:53,235 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 245 transitions, 2716 flow [2024-06-28 01:56:53,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:53,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:53,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:53,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:56:53,236 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:53,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:53,236 INFO L85 PathProgramCache]: Analyzing trace with hash -922375762, now seen corresponding path program 2 times [2024-06-28 01:56:53,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:53,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394708670] [2024-06-28 01:56:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:53,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:55,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:55,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394708670] [2024-06-28 01:56:55,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394708670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:55,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:55,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:56:55,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303480494] [2024-06-28 01:56:55,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:55,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:56:55,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:56:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:56:55,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:55,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 245 transitions, 2716 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:55,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:55,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:55,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:57,635 INFO L124 PetriNetUnfolderBase]: 5053/7857 cut-off events. [2024-06-28 01:56:57,635 INFO L125 PetriNetUnfolderBase]: For 180873/180954 co-relation queries the response was YES. [2024-06-28 01:56:57,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46357 conditions, 7857 events. 5053/7857 cut-off events. For 180873/180954 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 46850 event pairs, 1226 based on Foata normal form. 85/7789 useless extension candidates. Maximal degree in co-relation 46282. Up to 6357 conditions per place. [2024-06-28 01:56:57,695 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 221 selfloop transitions, 98 changer transitions 0/326 dead transitions. [2024-06-28 01:56:57,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 326 transitions, 3937 flow [2024-06-28 01:56:57,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:56:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:56:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:56:57,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-06-28 01:56:57,710 INFO L175 Difference]: Start difference. First operand has 159 places, 245 transitions, 2716 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:56:57,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 326 transitions, 3937 flow [2024-06-28 01:56:57,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 326 transitions, 3737 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-28 01:56:57,909 INFO L231 Difference]: Finished difference. Result has 162 places, 249 transitions, 2895 flow [2024-06-28 01:56:57,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2516, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2895, PETRI_PLACES=162, PETRI_TRANSITIONS=249} [2024-06-28 01:56:57,911 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 108 predicate places. [2024-06-28 01:56:57,911 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 249 transitions, 2895 flow [2024-06-28 01:56:57,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:57,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:57,911 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 01:56:57,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:56:57,911 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:57,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:57,912 INFO L85 PathProgramCache]: Analyzing trace with hash -922384132, now seen corresponding path program 3 times [2024-06-28 01:56:57,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:57,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100975045] [2024-06-28 01:56:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:57,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:01,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:01,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100975045] [2024-06-28 01:57:01,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100975045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:01,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:01,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:57:01,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467479979] [2024-06-28 01:57:01,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:01,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:57:01,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:01,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:57:01,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:57:01,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:01,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 249 transitions, 2895 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:01,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:01,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:01,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:03,320 INFO L124 PetriNetUnfolderBase]: 5319/8267 cut-off events. [2024-06-28 01:57:03,321 INFO L125 PetriNetUnfolderBase]: For 217730/217811 co-relation queries the response was YES. [2024-06-28 01:57:03,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50037 conditions, 8267 events. 5319/8267 cut-off events. For 217730/217811 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 49790 event pairs, 1414 based on Foata normal form. 101/8215 useless extension candidates. Maximal degree in co-relation 49962. Up to 6910 conditions per place. [2024-06-28 01:57:03,383 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 266 selfloop transitions, 72 changer transitions 0/345 dead transitions. [2024-06-28 01:57:03,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 345 transitions, 4155 flow [2024-06-28 01:57:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:57:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:57:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-28 01:57:03,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50625 [2024-06-28 01:57:03,385 INFO L175 Difference]: Start difference. First operand has 162 places, 249 transitions, 2895 flow. Second operand 10 states and 243 transitions. [2024-06-28 01:57:03,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 345 transitions, 4155 flow [2024-06-28 01:57:03,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 345 transitions, 3957 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:03,637 INFO L231 Difference]: Finished difference. Result has 169 places, 265 transitions, 3185 flow [2024-06-28 01:57:03,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3185, PETRI_PLACES=169, PETRI_TRANSITIONS=265} [2024-06-28 01:57:03,638 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-28 01:57:03,638 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 265 transitions, 3185 flow [2024-06-28 01:57:03,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:03,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:03,638 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 01:57:03,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:57:03,639 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:03,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:03,639 INFO L85 PathProgramCache]: Analyzing trace with hash -928870882, now seen corresponding path program 4 times [2024-06-28 01:57:03,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:03,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098727436] [2024-06-28 01:57:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:03,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:06,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:06,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098727436] [2024-06-28 01:57:06,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098727436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:06,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:06,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:57:06,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854538498] [2024-06-28 01:57:06,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:06,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:57:06,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:57:06,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:57:06,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:06,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 265 transitions, 3185 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:06,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:06,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:06,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:08,531 INFO L124 PetriNetUnfolderBase]: 5415/8413 cut-off events. [2024-06-28 01:57:08,532 INFO L125 PetriNetUnfolderBase]: For 224815/224896 co-relation queries the response was YES. [2024-06-28 01:57:08,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51366 conditions, 8413 events. 5415/8413 cut-off events. For 224815/224896 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 50673 event pairs, 1450 based on Foata normal form. 101/8361 useless extension candidates. Maximal degree in co-relation 51287. Up to 7238 conditions per place. [2024-06-28 01:57:08,595 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 270 selfloop transitions, 52 changer transitions 0/329 dead transitions. [2024-06-28 01:57:08,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 329 transitions, 4238 flow [2024-06-28 01:57:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:08,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:57:08,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-28 01:57:08,597 INFO L175 Difference]: Start difference. First operand has 169 places, 265 transitions, 3185 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:57:08,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 329 transitions, 4238 flow [2024-06-28 01:57:08,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 329 transitions, 3951 flow, removed 87 selfloop flow, removed 6 redundant places. [2024-06-28 01:57:08,879 INFO L231 Difference]: Finished difference. Result has 171 places, 269 transitions, 3201 flow [2024-06-28 01:57:08,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2938, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3201, PETRI_PLACES=171, PETRI_TRANSITIONS=269} [2024-06-28 01:57:08,879 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2024-06-28 01:57:08,879 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 269 transitions, 3201 flow [2024-06-28 01:57:08,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:08,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:08,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:08,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:57:08,880 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:08,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash -448423833, now seen corresponding path program 1 times [2024-06-28 01:57:08,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:08,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642383578] [2024-06-28 01:57:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:08,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:11,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:11,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642383578] [2024-06-28 01:57:11,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642383578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:11,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:11,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:57:11,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333377458] [2024-06-28 01:57:11,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:11,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:57:11,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:11,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:57:11,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:57:11,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:11,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 269 transitions, 3201 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:11,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:11,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:11,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:14,088 INFO L124 PetriNetUnfolderBase]: 5521/8670 cut-off events. [2024-06-28 01:57:14,088 INFO L125 PetriNetUnfolderBase]: For 217006/217087 co-relation queries the response was YES. [2024-06-28 01:57:14,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51521 conditions, 8670 events. 5521/8670 cut-off events. For 217006/217087 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 52647 event pairs, 975 based on Foata normal form. 85/8572 useless extension candidates. Maximal degree in co-relation 51441. Up to 7373 conditions per place. [2024-06-28 01:57:14,176 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 267 selfloop transitions, 64 changer transitions 0/338 dead transitions. [2024-06-28 01:57:14,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 338 transitions, 4180 flow [2024-06-28 01:57:14,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 01:57:14,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:57:14,178 INFO L175 Difference]: Start difference. First operand has 171 places, 269 transitions, 3201 flow. Second operand 9 states and 213 transitions. [2024-06-28 01:57:14,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 338 transitions, 4180 flow [2024-06-28 01:57:14,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 338 transitions, 4023 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 01:57:14,504 INFO L231 Difference]: Finished difference. Result has 174 places, 271 transitions, 3281 flow [2024-06-28 01:57:14,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3044, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3281, PETRI_PLACES=174, PETRI_TRANSITIONS=271} [2024-06-28 01:57:14,504 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 120 predicate places. [2024-06-28 01:57:14,504 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 271 transitions, 3281 flow [2024-06-28 01:57:14,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:14,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:14,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:14,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:57:14,505 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:14,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:14,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1752785511, now seen corresponding path program 2 times [2024-06-28 01:57:14,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:14,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229275585] [2024-06-28 01:57:14,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:14,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:16,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:16,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229275585] [2024-06-28 01:57:16,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229275585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:16,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:16,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:57:16,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267655807] [2024-06-28 01:57:16,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:16,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:57:16,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:16,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:57:16,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:57:16,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:16,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 271 transitions, 3281 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:16,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:16,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:16,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:19,190 INFO L124 PetriNetUnfolderBase]: 5627/8835 cut-off events. [2024-06-28 01:57:19,190 INFO L125 PetriNetUnfolderBase]: For 228521/228602 co-relation queries the response was YES. [2024-06-28 01:57:19,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52896 conditions, 8835 events. 5627/8835 cut-off events. For 228521/228602 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 54062 event pairs, 1468 based on Foata normal form. 85/8737 useless extension candidates. Maximal degree in co-relation 52815. Up to 7704 conditions per place. [2024-06-28 01:57:19,273 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 276 selfloop transitions, 58 changer transitions 0/341 dead transitions. [2024-06-28 01:57:19,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 341 transitions, 4280 flow [2024-06-28 01:57:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 01:57:19,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:57:19,275 INFO L175 Difference]: Start difference. First operand has 174 places, 271 transitions, 3281 flow. Second operand 9 states and 212 transitions. [2024-06-28 01:57:19,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 341 transitions, 4280 flow [2024-06-28 01:57:19,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 341 transitions, 4069 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 01:57:19,617 INFO L231 Difference]: Finished difference. Result has 176 places, 273 transitions, 3299 flow [2024-06-28 01:57:19,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3070, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3299, PETRI_PLACES=176, PETRI_TRANSITIONS=273} [2024-06-28 01:57:19,617 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-06-28 01:57:19,618 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 273 transitions, 3299 flow [2024-06-28 01:57:19,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:19,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:19,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:19,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:57:19,618 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:19,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash 443619849, now seen corresponding path program 1 times [2024-06-28 01:57:19,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:19,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117657504] [2024-06-28 01:57:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:19,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:21,492 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 01:57:21,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:21,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117657504] [2024-06-28 01:57:21,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117657504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:21,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:21,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:21,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432816770] [2024-06-28 01:57:21,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:21,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:21,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:21,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:21,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:21,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:21,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 273 transitions, 3299 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:21,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:21,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:21,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:23,685 INFO L124 PetriNetUnfolderBase]: 5650/8848 cut-off events. [2024-06-28 01:57:23,685 INFO L125 PetriNetUnfolderBase]: For 228565/228612 co-relation queries the response was YES. [2024-06-28 01:57:23,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52545 conditions, 8848 events. 5650/8848 cut-off events. For 228565/228612 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 53804 event pairs, 1464 based on Foata normal form. 43/8716 useless extension candidates. Maximal degree in co-relation 52463. Up to 8026 conditions per place. [2024-06-28 01:57:23,762 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 302 selfloop transitions, 29 changer transitions 0/338 dead transitions. [2024-06-28 01:57:23,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 338 transitions, 4594 flow [2024-06-28 01:57:23,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:57:23,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:57:23,766 INFO L175 Difference]: Start difference. First operand has 176 places, 273 transitions, 3299 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:57:23,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 338 transitions, 4594 flow [2024-06-28 01:57:24,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 338 transitions, 4379 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 01:57:24,082 INFO L231 Difference]: Finished difference. Result has 177 places, 285 transitions, 3360 flow [2024-06-28 01:57:24,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3360, PETRI_PLACES=177, PETRI_TRANSITIONS=285} [2024-06-28 01:57:24,083 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 123 predicate places. [2024-06-28 01:57:24,083 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 285 transitions, 3360 flow [2024-06-28 01:57:24,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:24,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:24,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:24,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:57:24,083 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:24,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1667846459, now seen corresponding path program 3 times [2024-06-28 01:57:24,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:24,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043733817] [2024-06-28 01:57:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:24,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:26,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:26,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043733817] [2024-06-28 01:57:26,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043733817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:26,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:26,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:57:26,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545859633] [2024-06-28 01:57:26,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:26,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:57:26,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:26,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:57:26,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:57:26,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:26,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 285 transitions, 3360 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:26,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:26,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:26,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:29,078 INFO L124 PetriNetUnfolderBase]: 5643/8861 cut-off events. [2024-06-28 01:57:29,078 INFO L125 PetriNetUnfolderBase]: For 228511/228592 co-relation queries the response was YES. [2024-06-28 01:57:29,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52453 conditions, 8861 events. 5643/8861 cut-off events. For 228511/228592 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 53981 event pairs, 1128 based on Foata normal form. 85/8762 useless extension candidates. Maximal degree in co-relation 52368. Up to 7703 conditions per place. [2024-06-28 01:57:29,148 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 291 selfloop transitions, 48 changer transitions 0/346 dead transitions. [2024-06-28 01:57:29,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 346 transitions, 4292 flow [2024-06-28 01:57:29,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:29,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:29,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:57:29,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 01:57:29,150 INFO L175 Difference]: Start difference. First operand has 177 places, 285 transitions, 3360 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:57:29,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 346 transitions, 4292 flow [2024-06-28 01:57:29,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 346 transitions, 4282 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:29,527 INFO L231 Difference]: Finished difference. Result has 183 places, 286 transitions, 3499 flow [2024-06-28 01:57:29,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3286, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3499, PETRI_PLACES=183, PETRI_TRANSITIONS=286} [2024-06-28 01:57:29,528 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 129 predicate places. [2024-06-28 01:57:29,528 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 286 transitions, 3499 flow [2024-06-28 01:57:29,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:29,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:29,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:29,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:57:29,529 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:29,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:29,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1919398491, now seen corresponding path program 2 times [2024-06-28 01:57:29,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:29,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157805903] [2024-06-28 01:57:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:29,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:31,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:31,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157805903] [2024-06-28 01:57:31,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157805903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:31,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:31,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:31,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122328312] [2024-06-28 01:57:31,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:31,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:31,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:31,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:31,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:31,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 286 transitions, 3499 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:31,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:31,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:31,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:34,004 INFO L124 PetriNetUnfolderBase]: 5640/8843 cut-off events. [2024-06-28 01:57:34,004 INFO L125 PetriNetUnfolderBase]: For 235540/235551 co-relation queries the response was YES. [2024-06-28 01:57:34,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52959 conditions, 8843 events. 5640/8843 cut-off events. For 235540/235551 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 53868 event pairs, 1468 based on Foata normal form. 3/8660 useless extension candidates. Maximal degree in co-relation 52871. Up to 8010 conditions per place. [2024-06-28 01:57:34,068 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 287 selfloop transitions, 35 changer transitions 0/329 dead transitions. [2024-06-28 01:57:34,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 329 transitions, 4497 flow [2024-06-28 01:57:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:57:34,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:57:34,070 INFO L175 Difference]: Start difference. First operand has 183 places, 286 transitions, 3499 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:57:34,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 329 transitions, 4497 flow [2024-06-28 01:57:34,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 329 transitions, 4294 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 01:57:34,391 INFO L231 Difference]: Finished difference. Result has 184 places, 291 transitions, 3487 flow [2024-06-28 01:57:34,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3308, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3487, PETRI_PLACES=184, PETRI_TRANSITIONS=291} [2024-06-28 01:57:34,392 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-28 01:57:34,392 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 291 transitions, 3487 flow [2024-06-28 01:57:34,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:34,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:34,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:34,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:57:34,392 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:34,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash 443948542, now seen corresponding path program 1 times [2024-06-28 01:57:34,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:34,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323548337] [2024-06-28 01:57:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:34,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:36,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:36,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323548337] [2024-06-28 01:57:36,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323548337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:36,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:36,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:36,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026364880] [2024-06-28 01:57:36,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:36,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:36,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:36,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:36,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:57:36,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 291 transitions, 3487 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:36,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:36,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:57:36,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:39,159 INFO L124 PetriNetUnfolderBase]: 5492/8647 cut-off events. [2024-06-28 01:57:39,159 INFO L125 PetriNetUnfolderBase]: For 228464/228568 co-relation queries the response was YES. [2024-06-28 01:57:39,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51277 conditions, 8647 events. 5492/8647 cut-off events. For 228464/228568 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 52738 event pairs, 1417 based on Foata normal form. 90/8550 useless extension candidates. Maximal degree in co-relation 51187. Up to 7652 conditions per place. [2024-06-28 01:57:39,246 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 261 selfloop transitions, 45 changer transitions 0/325 dead transitions. [2024-06-28 01:57:39,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 325 transitions, 4339 flow [2024-06-28 01:57:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 01:57:39,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 01:57:39,247 INFO L175 Difference]: Start difference. First operand has 184 places, 291 transitions, 3487 flow. Second operand 6 states and 141 transitions. [2024-06-28 01:57:39,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 325 transitions, 4339 flow [2024-06-28 01:57:39,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 325 transitions, 4268 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:39,630 INFO L231 Difference]: Finished difference. Result has 188 places, 294 transitions, 3552 flow [2024-06-28 01:57:39,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3416, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3552, PETRI_PLACES=188, PETRI_TRANSITIONS=294} [2024-06-28 01:57:39,630 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-28 01:57:39,630 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 294 transitions, 3552 flow [2024-06-28 01:57:39,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:39,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:39,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:39,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:57:39,631 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:39,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash 337477102, now seen corresponding path program 2 times [2024-06-28 01:57:39,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:39,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261406815] [2024-06-28 01:57:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:39,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:41,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:41,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261406815] [2024-06-28 01:57:41,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261406815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:41,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:41,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:41,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699933706] [2024-06-28 01:57:41,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:41,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:41,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:41,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:41,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:41,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:57:41,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 294 transitions, 3552 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:41,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:41,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:57:41,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:44,593 INFO L124 PetriNetUnfolderBase]: 5480/8631 cut-off events. [2024-06-28 01:57:44,593 INFO L125 PetriNetUnfolderBase]: For 232536/232640 co-relation queries the response was YES. [2024-06-28 01:57:44,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52147 conditions, 8631 events. 5480/8631 cut-off events. For 232536/232640 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 52664 event pairs, 1417 based on Foata normal form. 90/8534 useless extension candidates. Maximal degree in co-relation 52055. Up to 7562 conditions per place. [2024-06-28 01:57:44,679 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 269 selfloop transitions, 48 changer transitions 0/336 dead transitions. [2024-06-28 01:57:44,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 336 transitions, 4512 flow [2024-06-28 01:57:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:44,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:57:44,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 01:57:44,684 INFO L175 Difference]: Start difference. First operand has 188 places, 294 transitions, 3552 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:57:44,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 336 transitions, 4512 flow [2024-06-28 01:57:45,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 336 transitions, 4414 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:45,023 INFO L231 Difference]: Finished difference. Result has 191 places, 297 transitions, 3596 flow [2024-06-28 01:57:45,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3458, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3596, PETRI_PLACES=191, PETRI_TRANSITIONS=297} [2024-06-28 01:57:45,024 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 137 predicate places. [2024-06-28 01:57:45,024 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 297 transitions, 3596 flow [2024-06-28 01:57:45,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:45,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:45,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:45,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:57:45,025 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:45,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash 130442548, now seen corresponding path program 1 times [2024-06-28 01:57:45,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:45,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432157025] [2024-06-28 01:57:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:45,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:47,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:47,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432157025] [2024-06-28 01:57:47,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432157025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:47,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:47,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:47,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796114646] [2024-06-28 01:57:47,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:47,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:47,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:47,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:47,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:47,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:57:47,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 297 transitions, 3596 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:47,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:47,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:57:47,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:49,794 INFO L124 PetriNetUnfolderBase]: 5431/8665 cut-off events. [2024-06-28 01:57:49,794 INFO L125 PetriNetUnfolderBase]: For 234928/235039 co-relation queries the response was YES. [2024-06-28 01:57:49,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53090 conditions, 8665 events. 5431/8665 cut-off events. For 234928/235039 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 53706 event pairs, 1486 based on Foata normal form. 95/8546 useless extension candidates. Maximal degree in co-relation 52997. Up to 7822 conditions per place. [2024-06-28 01:57:49,867 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 297 selfloop transitions, 27 changer transitions 0/336 dead transitions. [2024-06-28 01:57:49,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 336 transitions, 4564 flow [2024-06-28 01:57:49,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:49,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 01:57:49,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:57:49,869 INFO L175 Difference]: Start difference. First operand has 191 places, 297 transitions, 3596 flow. Second operand 6 states and 140 transitions. [2024-06-28 01:57:49,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 336 transitions, 4564 flow [2024-06-28 01:57:50,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 336 transitions, 4462 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:50,140 INFO L231 Difference]: Finished difference. Result has 193 places, 303 transitions, 3716 flow [2024-06-28 01:57:50,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3494, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3716, PETRI_PLACES=193, PETRI_TRANSITIONS=303} [2024-06-28 01:57:50,141 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-28 01:57:50,141 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 303 transitions, 3716 flow [2024-06-28 01:57:50,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:50,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:50,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:50,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:57:50,142 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:50,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:50,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1830009216, now seen corresponding path program 2 times [2024-06-28 01:57:50,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:50,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273201728] [2024-06-28 01:57:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:50,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:52,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273201728] [2024-06-28 01:57:52,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273201728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:52,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:52,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:52,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176486894] [2024-06-28 01:57:52,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:52,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:52,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:52,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:52,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:52,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:57:52,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 303 transitions, 3716 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:52,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:52,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:57:52,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:54,780 INFO L124 PetriNetUnfolderBase]: 5963/9422 cut-off events. [2024-06-28 01:57:54,781 INFO L125 PetriNetUnfolderBase]: For 285821/285932 co-relation queries the response was YES. [2024-06-28 01:57:54,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60846 conditions, 9422 events. 5963/9422 cut-off events. For 285821/285932 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 58273 event pairs, 1422 based on Foata normal form. 95/9303 useless extension candidates. Maximal degree in co-relation 60751. Up to 7771 conditions per place. [2024-06-28 01:57:54,877 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 281 selfloop transitions, 89 changer transitions 0/382 dead transitions. [2024-06-28 01:57:54,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 382 transitions, 5279 flow [2024-06-28 01:57:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:57:54,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:57:54,878 INFO L175 Difference]: Start difference. First operand has 193 places, 303 transitions, 3716 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:57:54,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 382 transitions, 5279 flow [2024-06-28 01:57:55,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 382 transitions, 5174 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:55,449 INFO L231 Difference]: Finished difference. Result has 200 places, 341 transitions, 4446 flow [2024-06-28 01:57:55,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3611, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4446, PETRI_PLACES=200, PETRI_TRANSITIONS=341} [2024-06-28 01:57:55,450 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 146 predicate places. [2024-06-28 01:57:55,450 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 341 transitions, 4446 flow [2024-06-28 01:57:55,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:55,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:55,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:55,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:57:55,450 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:55,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash 337492974, now seen corresponding path program 1 times [2024-06-28 01:57:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597066361] [2024-06-28 01:57:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:55,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:59,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:59,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597066361] [2024-06-28 01:57:59,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597066361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:59,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:59,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147672436] [2024-06-28 01:57:59,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:59,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:59,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:59,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:57:59,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 341 transitions, 4446 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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 01:57:59,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:59,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:57:59,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:01,921 INFO L124 PetriNetUnfolderBase]: 6075/9585 cut-off events. [2024-06-28 01:58:01,921 INFO L125 PetriNetUnfolderBase]: For 306437/306544 co-relation queries the response was YES. [2024-06-28 01:58:01,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64764 conditions, 9585 events. 6075/9585 cut-off events. For 306437/306544 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 59591 event pairs, 1582 based on Foata normal form. 95/9442 useless extension candidates. Maximal degree in co-relation 64665. Up to 8581 conditions per place. [2024-06-28 01:58:02,006 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 337 selfloop transitions, 25 changer transitions 0/381 dead transitions. [2024-06-28 01:58:02,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 381 transitions, 5503 flow [2024-06-28 01:58:02,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:58:02,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-28 01:58:02,010 INFO L175 Difference]: Start difference. First operand has 200 places, 341 transitions, 4446 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:58:02,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 381 transitions, 5503 flow [2024-06-28 01:58:02,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 381 transitions, 5400 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:02,539 INFO L231 Difference]: Finished difference. Result has 205 places, 343 transitions, 4433 flow [2024-06-28 01:58:02,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4353, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4433, PETRI_PLACES=205, PETRI_TRANSITIONS=343} [2024-06-28 01:58:02,540 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-28 01:58:02,540 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 343 transitions, 4433 flow [2024-06-28 01:58:02,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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 01:58:02,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:02,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:02,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:58:02,540 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:02,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:02,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1412399619, now seen corresponding path program 1 times [2024-06-28 01:58:02,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:02,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354538628] [2024-06-28 01:58:02,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:02,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:05,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:05,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:05,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354538628] [2024-06-28 01:58:05,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354538628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:05,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:05,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:05,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597345449] [2024-06-28 01:58:05,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:05,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:05,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:05,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:05,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:05,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:05,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 343 transitions, 4433 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:05,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:05,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:05,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:08,226 INFO L124 PetriNetUnfolderBase]: 6416/10066 cut-off events. [2024-06-28 01:58:08,226 INFO L125 PetriNetUnfolderBase]: For 310238/310285 co-relation queries the response was YES. [2024-06-28 01:58:08,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67565 conditions, 10066 events. 6416/10066 cut-off events. For 310238/310285 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 62493 event pairs, 1610 based on Foata normal form. 44/9892 useless extension candidates. Maximal degree in co-relation 67464. Up to 8950 conditions per place. [2024-06-28 01:58:08,663 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 376 selfloop transitions, 46 changer transitions 0/429 dead transitions. [2024-06-28 01:58:08,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 429 transitions, 6114 flow [2024-06-28 01:58:08,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 01:58:08,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:58:08,665 INFO L175 Difference]: Start difference. First operand has 205 places, 343 transitions, 4433 flow. Second operand 9 states and 208 transitions. [2024-06-28 01:58:08,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 429 transitions, 6114 flow [2024-06-28 01:58:09,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 429 transitions, 6050 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:09,185 INFO L231 Difference]: Finished difference. Result has 210 places, 354 transitions, 4609 flow [2024-06-28 01:58:09,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4378, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4609, PETRI_PLACES=210, PETRI_TRANSITIONS=354} [2024-06-28 01:58:09,186 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-28 01:58:09,186 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 354 transitions, 4609 flow [2024-06-28 01:58:09,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:09,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:09,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:09,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:58:09,187 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:09,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1965173433, now seen corresponding path program 2 times [2024-06-28 01:58:09,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:09,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497720941] [2024-06-28 01:58:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:09,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:11,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:11,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497720941] [2024-06-28 01:58:11,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497720941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:11,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:11,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:11,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849104209] [2024-06-28 01:58:11,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:11,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:11,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:11,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:11,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:11,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:11,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 354 transitions, 4609 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:11,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:11,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:11,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:14,795 INFO L124 PetriNetUnfolderBase]: 6462/10125 cut-off events. [2024-06-28 01:58:14,795 INFO L125 PetriNetUnfolderBase]: For 322998/323009 co-relation queries the response was YES. [2024-06-28 01:58:14,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69224 conditions, 10125 events. 6462/10125 cut-off events. For 322998/323009 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 62771 event pairs, 1624 based on Foata normal form. 4/9905 useless extension candidates. Maximal degree in co-relation 69121. Up to 8990 conditions per place. [2024-06-28 01:58:14,906 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 349 selfloop transitions, 50 changer transitions 0/406 dead transitions. [2024-06-28 01:58:14,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 406 transitions, 5907 flow [2024-06-28 01:58:14,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 01:58:14,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:58:14,907 INFO L175 Difference]: Start difference. First operand has 210 places, 354 transitions, 4609 flow. Second operand 7 states and 161 transitions. [2024-06-28 01:58:14,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 406 transitions, 5907 flow [2024-06-28 01:58:15,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 406 transitions, 5842 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:15,625 INFO L231 Difference]: Finished difference. Result has 213 places, 357 transitions, 4690 flow [2024-06-28 01:58:15,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4548, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4690, PETRI_PLACES=213, PETRI_TRANSITIONS=357} [2024-06-28 01:58:15,626 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 159 predicate places. [2024-06-28 01:58:15,626 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 357 transitions, 4690 flow [2024-06-28 01:58:15,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:15,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:15,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:15,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:58:15,626 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:15,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:15,627 INFO L85 PathProgramCache]: Analyzing trace with hash -628187411, now seen corresponding path program 3 times [2024-06-28 01:58:15,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:15,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587683541] [2024-06-28 01:58:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:15,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:17,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587683541] [2024-06-28 01:58:17,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587683541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:17,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:17,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431586144] [2024-06-28 01:58:17,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:17,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:17,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:17,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:17,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:17,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:17,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 357 transitions, 4690 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:17,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:17,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:17,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:21,275 INFO L124 PetriNetUnfolderBase]: 6456/10111 cut-off events. [2024-06-28 01:58:21,275 INFO L125 PetriNetUnfolderBase]: For 328079/328090 co-relation queries the response was YES. [2024-06-28 01:58:21,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69508 conditions, 10111 events. 6456/10111 cut-off events. For 328079/328090 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 62548 event pairs, 1620 based on Foata normal form. 4/9893 useless extension candidates. Maximal degree in co-relation 69403. Up to 8985 conditions per place. [2024-06-28 01:58:21,414 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 361 selfloop transitions, 52 changer transitions 0/420 dead transitions. [2024-06-28 01:58:21,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 420 transitions, 6060 flow [2024-06-28 01:58:21,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:21,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-28 01:58:21,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-28 01:58:21,416 INFO L175 Difference]: Start difference. First operand has 213 places, 357 transitions, 4690 flow. Second operand 9 states and 201 transitions. [2024-06-28 01:58:21,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 420 transitions, 6060 flow [2024-06-28 01:58:22,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 420 transitions, 5973 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:22,217 INFO L231 Difference]: Finished difference. Result has 218 places, 357 transitions, 4713 flow [2024-06-28 01:58:22,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4603, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4713, PETRI_PLACES=218, PETRI_TRANSITIONS=357} [2024-06-28 01:58:22,218 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-06-28 01:58:22,218 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 357 transitions, 4713 flow [2024-06-28 01:58:22,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:22,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:22,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:22,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:58:22,218 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:22,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:22,219 INFO L85 PathProgramCache]: Analyzing trace with hash 13771163, now seen corresponding path program 4 times [2024-06-28 01:58:22,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:22,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713085940] [2024-06-28 01:58:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:22,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:24,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:24,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713085940] [2024-06-28 01:58:24,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713085940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:24,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:24,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:24,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593263579] [2024-06-28 01:58:24,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:24,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:24,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:24,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:24,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:24,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:24,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 357 transitions, 4713 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:24,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:24,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:24,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:27,532 INFO L124 PetriNetUnfolderBase]: 6450/10099 cut-off events. [2024-06-28 01:58:27,532 INFO L125 PetriNetUnfolderBase]: For 333490/333501 co-relation queries the response was YES. [2024-06-28 01:58:27,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69590 conditions, 10099 events. 6450/10099 cut-off events. For 333490/333501 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 62466 event pairs, 1635 based on Foata normal form. 4/9881 useless extension candidates. Maximal degree in co-relation 69484. Up to 8901 conditions per place. [2024-06-28 01:58:27,641 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 357 selfloop transitions, 55 changer transitions 0/419 dead transitions. [2024-06-28 01:58:27,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 419 transitions, 6063 flow [2024-06-28 01:58:27,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:27,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 01:58:27,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713541666666667 [2024-06-28 01:58:27,643 INFO L175 Difference]: Start difference. First operand has 218 places, 357 transitions, 4713 flow. Second operand 8 states and 181 transitions. [2024-06-28 01:58:27,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 419 transitions, 6063 flow [2024-06-28 01:58:28,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 419 transitions, 5962 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:58:28,310 INFO L231 Difference]: Finished difference. Result has 219 places, 363 transitions, 4806 flow [2024-06-28 01:58:28,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4612, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4806, PETRI_PLACES=219, PETRI_TRANSITIONS=363} [2024-06-28 01:58:28,311 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 165 predicate places. [2024-06-28 01:58:28,311 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 363 transitions, 4806 flow [2024-06-28 01:58:28,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:28,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:28,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:28,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:58:28,312 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:28,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:28,312 INFO L85 PathProgramCache]: Analyzing trace with hash 3572247, now seen corresponding path program 1 times [2024-06-28 01:58:28,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:28,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489703394] [2024-06-28 01:58:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:28,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:31,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:31,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489703394] [2024-06-28 01:58:31,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489703394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:31,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:31,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:31,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541289291] [2024-06-28 01:58:31,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:31,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:31,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:31,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:31,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:31,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:58:31,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 363 transitions, 4806 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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 01:58:31,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:31,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:58:31,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:33,810 INFO L124 PetriNetUnfolderBase]: 6205/9836 cut-off events. [2024-06-28 01:58:33,810 INFO L125 PetriNetUnfolderBase]: For 343192/343352 co-relation queries the response was YES. [2024-06-28 01:58:33,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69668 conditions, 9836 events. 6205/9836 cut-off events. For 343192/343352 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 61608 event pairs, 1665 based on Foata normal form. 119/9707 useless extension candidates. Maximal degree in co-relation 69559. Up to 8804 conditions per place. [2024-06-28 01:58:33,946 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 362 selfloop transitions, 36 changer transitions 0/412 dead transitions. [2024-06-28 01:58:33,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 412 transitions, 5951 flow [2024-06-28 01:58:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:33,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:58:33,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-28 01:58:33,948 INFO L175 Difference]: Start difference. First operand has 219 places, 363 transitions, 4806 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:58:33,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 412 transitions, 5951 flow [2024-06-28 01:58:34,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 412 transitions, 5864 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:34,669 INFO L231 Difference]: Finished difference. Result has 223 places, 369 transitions, 4948 flow [2024-06-28 01:58:34,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4720, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4948, PETRI_PLACES=223, PETRI_TRANSITIONS=369} [2024-06-28 01:58:34,669 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 169 predicate places. [2024-06-28 01:58:34,670 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 369 transitions, 4948 flow [2024-06-28 01:58:34,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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 01:58:34,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:34,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:34,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:58:34,670 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:34,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:34,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1952242501, now seen corresponding path program 2 times [2024-06-28 01:58:34,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:34,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498429050] [2024-06-28 01:58:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:34,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:38,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:38,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498429050] [2024-06-28 01:58:38,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498429050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:38,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:38,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:38,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198230345] [2024-06-28 01:58:38,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:38,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:38,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:38,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:38,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:58:38,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 369 transitions, 4948 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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 01:58:38,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:38,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:58:38,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:40,847 INFO L124 PetriNetUnfolderBase]: 6251/9902 cut-off events. [2024-06-28 01:58:40,847 INFO L125 PetriNetUnfolderBase]: For 354553/354713 co-relation queries the response was YES. [2024-06-28 01:58:40,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71361 conditions, 9902 events. 6251/9902 cut-off events. For 354553/354713 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 61985 event pairs, 1668 based on Foata normal form. 119/9773 useless extension candidates. Maximal degree in co-relation 71249. Up to 8888 conditions per place. [2024-06-28 01:58:40,961 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 367 selfloop transitions, 34 changer transitions 0/415 dead transitions. [2024-06-28 01:58:40,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 415 transitions, 6095 flow [2024-06-28 01:58:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 01:58:40,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:58:40,963 INFO L175 Difference]: Start difference. First operand has 223 places, 369 transitions, 4948 flow. Second operand 7 states and 161 transitions. [2024-06-28 01:58:40,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 415 transitions, 6095 flow [2024-06-28 01:58:41,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 415 transitions, 5970 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:41,805 INFO L231 Difference]: Finished difference. Result has 228 places, 376 transitions, 5059 flow [2024-06-28 01:58:41,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4823, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5059, PETRI_PLACES=228, PETRI_TRANSITIONS=376} [2024-06-28 01:58:41,806 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2024-06-28 01:58:41,806 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 376 transitions, 5059 flow [2024-06-28 01:58:41,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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 01:58:41,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:41,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:41,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:58:41,807 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:41,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:41,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1952242346, now seen corresponding path program 1 times [2024-06-28 01:58:41,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:41,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203053957] [2024-06-28 01:58:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:41,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:44,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:44,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203053957] [2024-06-28 01:58:44,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203053957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:44,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:44,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:44,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815174972] [2024-06-28 01:58:44,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:44,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:44,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:44,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:44,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:44,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:44,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 376 transitions, 5059 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:44,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:44,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:44,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:47,155 INFO L124 PetriNetUnfolderBase]: 6590/10291 cut-off events. [2024-06-28 01:58:47,155 INFO L125 PetriNetUnfolderBase]: For 371895/371907 co-relation queries the response was YES. [2024-06-28 01:58:47,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74405 conditions, 10291 events. 6590/10291 cut-off events. For 371895/371907 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 63856 event pairs, 1713 based on Foata normal form. 12/10085 useless extension candidates. Maximal degree in co-relation 74290. Up to 9432 conditions per place. [2024-06-28 01:58:47,299 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 401 selfloop transitions, 22 changer transitions 0/430 dead transitions. [2024-06-28 01:58:47,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 430 transitions, 6418 flow [2024-06-28 01:58:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:47,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 01:58:47,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 01:58:47,322 INFO L175 Difference]: Start difference. First operand has 228 places, 376 transitions, 5059 flow. Second operand 7 states and 156 transitions. [2024-06-28 01:58:47,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 430 transitions, 6418 flow [2024-06-28 01:58:48,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 430 transitions, 6174 flow, removed 88 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:48,200 INFO L231 Difference]: Finished difference. Result has 233 places, 391 transitions, 5213 flow [2024-06-28 01:58:48,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5213, PETRI_PLACES=233, PETRI_TRANSITIONS=391} [2024-06-28 01:58:48,200 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 179 predicate places. [2024-06-28 01:58:48,200 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 391 transitions, 5213 flow [2024-06-28 01:58:48,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:48,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:48,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:48,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:58:48,201 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:48,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:48,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1948517696, now seen corresponding path program 2 times [2024-06-28 01:58:48,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:48,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795279418] [2024-06-28 01:58:48,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:48,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:50,624 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 01:58:50,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:50,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795279418] [2024-06-28 01:58:50,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795279418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:50,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:50,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434055221] [2024-06-28 01:58:50,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:50,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:50,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:50,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:50,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:50,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:50,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 391 transitions, 5213 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:50,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:50,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:50,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:53,500 INFO L124 PetriNetUnfolderBase]: 6641/10389 cut-off events. [2024-06-28 01:58:53,500 INFO L125 PetriNetUnfolderBase]: For 383112/383128 co-relation queries the response was YES. [2024-06-28 01:58:53,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75529 conditions, 10389 events. 6641/10389 cut-off events. For 383112/383128 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 64561 event pairs, 1653 based on Foata normal form. 17/10178 useless extension candidates. Maximal degree in co-relation 75411. Up to 9396 conditions per place. [2024-06-28 01:58:53,647 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 403 selfloop transitions, 30 changer transitions 0/440 dead transitions. [2024-06-28 01:58:53,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 440 transitions, 6532 flow [2024-06-28 01:58:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:58:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:58:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:58:53,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-28 01:58:53,649 INFO L175 Difference]: Start difference. First operand has 233 places, 391 transitions, 5213 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:58:53,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 440 transitions, 6532 flow [2024-06-28 01:58:54,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 440 transitions, 6452 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:55,001 INFO L231 Difference]: Finished difference. Result has 238 places, 396 transitions, 5301 flow [2024-06-28 01:58:55,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5133, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5301, PETRI_PLACES=238, PETRI_TRANSITIONS=396} [2024-06-28 01:58:55,002 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-28 01:58:55,002 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 396 transitions, 5301 flow [2024-06-28 01:58:55,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:55,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:55,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:55,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:58:55,008 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:55,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1948523276, now seen corresponding path program 3 times [2024-06-28 01:58:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:55,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132666811] [2024-06-28 01:58:55,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:57,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:57,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132666811] [2024-06-28 01:58:57,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132666811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:57,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:57,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:57,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616722556] [2024-06-28 01:58:57,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:57,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:57,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:57,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:57,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:57,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:57,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 396 transitions, 5301 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:57,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:57,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:57,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:00,300 INFO L124 PetriNetUnfolderBase]: 6659/10347 cut-off events. [2024-06-28 01:59:00,300 INFO L125 PetriNetUnfolderBase]: For 393783/393799 co-relation queries the response was YES. [2024-06-28 01:59:00,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76867 conditions, 10347 events. 6659/10347 cut-off events. For 393783/393799 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 64046 event pairs, 1684 based on Foata normal form. 16/10156 useless extension candidates. Maximal degree in co-relation 76747. Up to 9474 conditions per place. [2024-06-28 01:59:00,404 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 420 selfloop transitions, 26 changer transitions 0/453 dead transitions. [2024-06-28 01:59:00,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 453 transitions, 6765 flow [2024-06-28 01:59:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:00,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 01:59:00,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:59:00,405 INFO L175 Difference]: Start difference. First operand has 238 places, 396 transitions, 5301 flow. Second operand 7 states and 154 transitions. [2024-06-28 01:59:00,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 453 transitions, 6765 flow [2024-06-28 01:59:01,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 453 transitions, 6636 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:01,237 INFO L231 Difference]: Finished difference. Result has 242 places, 414 transitions, 5585 flow [2024-06-28 01:59:01,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5213, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5585, PETRI_PLACES=242, PETRI_TRANSITIONS=414} [2024-06-28 01:59:01,238 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 188 predicate places. [2024-06-28 01:59:01,238 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 414 transitions, 5585 flow [2024-06-28 01:59:01,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:01,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:01,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:01,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:59:01,239 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:01,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:01,239 INFO L85 PathProgramCache]: Analyzing trace with hash -895709491, now seen corresponding path program 3 times [2024-06-28 01:59:01,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:01,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812593754] [2024-06-28 01:59:01,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:01,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:03,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:03,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812593754] [2024-06-28 01:59:03,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812593754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:03,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:03,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:03,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959200155] [2024-06-28 01:59:03,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:03,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:03,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:03,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:03,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:03,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:59:03,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 414 transitions, 5585 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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 01:59:03,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:03,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:59:03,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:06,269 INFO L124 PetriNetUnfolderBase]: 6389/10085 cut-off events. [2024-06-28 01:59:06,269 INFO L125 PetriNetUnfolderBase]: For 403928/403994 co-relation queries the response was YES. [2024-06-28 01:59:06,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76655 conditions, 10085 events. 6389/10085 cut-off events. For 403928/403994 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 63375 event pairs, 1654 based on Foata normal form. 54/9919 useless extension candidates. Maximal degree in co-relation 76532. Up to 8995 conditions per place. [2024-06-28 01:59:06,399 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 394 selfloop transitions, 50 changer transitions 0/468 dead transitions. [2024-06-28 01:59:06,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 468 transitions, 7120 flow [2024-06-28 01:59:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:06,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:06,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 01:59:06,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-06-28 01:59:06,401 INFO L175 Difference]: Start difference. First operand has 242 places, 414 transitions, 5585 flow. Second operand 8 states and 170 transitions. [2024-06-28 01:59:06,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 468 transitions, 7120 flow [2024-06-28 01:59:07,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 468 transitions, 7048 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:07,426 INFO L231 Difference]: Finished difference. Result has 250 places, 436 transitions, 6182 flow [2024-06-28 01:59:07,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5513, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6182, PETRI_PLACES=250, PETRI_TRANSITIONS=436} [2024-06-28 01:59:07,426 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 196 predicate places. [2024-06-28 01:59:07,426 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 436 transitions, 6182 flow [2024-06-28 01:59:07,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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 01:59:07,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:07,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:07,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:59:07,427 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:07,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:07,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1676006488, now seen corresponding path program 1 times [2024-06-28 01:59:07,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:07,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950042346] [2024-06-28 01:59:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:09,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:09,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950042346] [2024-06-28 01:59:09,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950042346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:09,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:09,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:09,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704095804] [2024-06-28 01:59:09,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:09,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:09,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:09,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:09,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:09,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:09,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 436 transitions, 6182 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:09,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:09,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:09,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:12,774 INFO L124 PetriNetUnfolderBase]: 6715/10515 cut-off events. [2024-06-28 01:59:12,775 INFO L125 PetriNetUnfolderBase]: For 428962/429009 co-relation queries the response was YES. [2024-06-28 01:59:12,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80650 conditions, 10515 events. 6715/10515 cut-off events. For 428962/429009 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 65467 event pairs, 1256 based on Foata normal form. 44/10324 useless extension candidates. Maximal degree in co-relation 80523. Up to 9330 conditions per place. [2024-06-28 01:59:12,899 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 460 selfloop transitions, 42 changer transitions 0/509 dead transitions. [2024-06-28 01:59:12,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 509 transitions, 8004 flow [2024-06-28 01:59:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:59:12,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:59:12,901 INFO L175 Difference]: Start difference. First operand has 250 places, 436 transitions, 6182 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:59:12,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 509 transitions, 8004 flow [2024-06-28 01:59:13,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 509 transitions, 7582 flow, removed 191 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:13,893 INFO L231 Difference]: Finished difference. Result has 255 places, 441 transitions, 6044 flow [2024-06-28 01:59:13,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5817, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6044, PETRI_PLACES=255, PETRI_TRANSITIONS=441} [2024-06-28 01:59:13,894 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 201 predicate places. [2024-06-28 01:59:13,894 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 441 transitions, 6044 flow [2024-06-28 01:59:13,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:13,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:13,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:13,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:59:13,895 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:13,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash 267785390, now seen corresponding path program 2 times [2024-06-28 01:59:13,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:13,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930671041] [2024-06-28 01:59:13,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:13,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:16,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:16,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930671041] [2024-06-28 01:59:16,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930671041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:16,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:16,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:16,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776020715] [2024-06-28 01:59:16,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:16,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:16,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:16,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:16,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:16,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:16,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 441 transitions, 6044 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:16,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:16,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:16,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:19,517 INFO L124 PetriNetUnfolderBase]: 6753/10575 cut-off events. [2024-06-28 01:59:19,517 INFO L125 PetriNetUnfolderBase]: For 437203/437250 co-relation queries the response was YES. [2024-06-28 01:59:19,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81330 conditions, 10575 events. 6753/10575 cut-off events. For 437203/437250 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 65988 event pairs, 1647 based on Foata normal form. 44/10382 useless extension candidates. Maximal degree in co-relation 81200. Up to 9517 conditions per place. [2024-06-28 01:59:19,629 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 457 selfloop transitions, 40 changer transitions 0/504 dead transitions. [2024-06-28 01:59:19,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 504 transitions, 7595 flow [2024-06-28 01:59:19,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:19,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:59:19,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 01:59:19,630 INFO L175 Difference]: Start difference. First operand has 255 places, 441 transitions, 6044 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:59:19,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 504 transitions, 7595 flow [2024-06-28 01:59:20,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 504 transitions, 7479 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:20,623 INFO L231 Difference]: Finished difference. Result has 260 places, 443 transitions, 6049 flow [2024-06-28 01:59:20,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5938, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6049, PETRI_PLACES=260, PETRI_TRANSITIONS=443} [2024-06-28 01:59:20,627 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-28 01:59:20,627 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 443 transitions, 6049 flow [2024-06-28 01:59:20,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:20,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:20,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:20,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:59:20,628 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:20,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:20,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1130000666, now seen corresponding path program 1 times [2024-06-28 01:59:20,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:20,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529124877] [2024-06-28 01:59:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:20,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:22,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:22,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529124877] [2024-06-28 01:59:22,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529124877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:22,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:22,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:22,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319627704] [2024-06-28 01:59:22,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:22,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:22,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:22,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:22,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:22,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:22,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 443 transitions, 6049 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:22,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:22,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:22,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:26,011 INFO L124 PetriNetUnfolderBase]: 6807/10650 cut-off events. [2024-06-28 01:59:26,011 INFO L125 PetriNetUnfolderBase]: For 448016/448106 co-relation queries the response was YES. [2024-06-28 01:59:26,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82219 conditions, 10650 events. 6807/10650 cut-off events. For 448016/448106 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 66552 event pairs, 1674 based on Foata normal form. 83/10496 useless extension candidates. Maximal degree in co-relation 82086. Up to 9289 conditions per place. [2024-06-28 01:59:26,168 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 414 selfloop transitions, 86 changer transitions 0/507 dead transitions. [2024-06-28 01:59:26,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 507 transitions, 7996 flow [2024-06-28 01:59:26,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:26,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:59:26,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 01:59:26,169 INFO L175 Difference]: Start difference. First operand has 260 places, 443 transitions, 6049 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:59:26,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 507 transitions, 7996 flow [2024-06-28 01:59:27,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 507 transitions, 7916 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:27,275 INFO L231 Difference]: Finished difference. Result has 263 places, 453 transitions, 6430 flow [2024-06-28 01:59:27,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5969, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6430, PETRI_PLACES=263, PETRI_TRANSITIONS=453} [2024-06-28 01:59:27,276 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 209 predicate places. [2024-06-28 01:59:27,276 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 453 transitions, 6430 flow [2024-06-28 01:59:27,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:27,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:27,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:27,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:59:27,277 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:27,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:27,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1116952072, now seen corresponding path program 2 times [2024-06-28 01:59:27,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:27,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556998707] [2024-06-28 01:59:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:27,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:29,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:29,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556998707] [2024-06-28 01:59:29,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556998707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:29,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:29,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:29,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646853906] [2024-06-28 01:59:29,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:29,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:29,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:29,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:29,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:29,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:29,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 453 transitions, 6430 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:29,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:29,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:29,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:32,710 INFO L124 PetriNetUnfolderBase]: 6856/10725 cut-off events. [2024-06-28 01:59:32,710 INFO L125 PetriNetUnfolderBase]: For 468280/468370 co-relation queries the response was YES. [2024-06-28 01:59:32,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84172 conditions, 10725 events. 6856/10725 cut-off events. For 468280/468370 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 67113 event pairs, 1683 based on Foata normal form. 83/10570 useless extension candidates. Maximal degree in co-relation 84038. Up to 9340 conditions per place. [2024-06-28 01:59:32,854 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 403 selfloop transitions, 97 changer transitions 0/507 dead transitions. [2024-06-28 01:59:32,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 507 transitions, 8247 flow [2024-06-28 01:59:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:59:32,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:59:32,855 INFO L175 Difference]: Start difference. First operand has 263 places, 453 transitions, 6430 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:59:32,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 507 transitions, 8247 flow [2024-06-28 01:59:34,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 507 transitions, 8133 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-06-28 01:59:34,175 INFO L231 Difference]: Finished difference. Result has 269 places, 460 transitions, 6781 flow [2024-06-28 01:59:34,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6781, PETRI_PLACES=269, PETRI_TRANSITIONS=460} [2024-06-28 01:59:34,176 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 215 predicate places. [2024-06-28 01:59:34,176 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 460 transitions, 6781 flow [2024-06-28 01:59:34,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:34,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:34,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:34,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:59:34,185 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:34,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:34,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1359029720, now seen corresponding path program 3 times [2024-06-28 01:59:34,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:34,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712457373] [2024-06-28 01:59:34,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:34,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:36,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:36,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712457373] [2024-06-28 01:59:36,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712457373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:36,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:36,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889298747] [2024-06-28 01:59:36,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:36,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:36,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:36,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:36,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 460 transitions, 6781 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:36,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:36,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:36,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:39,861 INFO L124 PetriNetUnfolderBase]: 6851/10715 cut-off events. [2024-06-28 01:59:39,862 INFO L125 PetriNetUnfolderBase]: For 477775/477786 co-relation queries the response was YES. [2024-06-28 01:59:39,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84780 conditions, 10715 events. 6851/10715 cut-off events. For 477775/477786 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 66891 event pairs, 1649 based on Foata normal form. 4/10474 useless extension candidates. Maximal degree in co-relation 84643. Up to 9649 conditions per place. [2024-06-28 01:59:39,977 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 461 selfloop transitions, 43 changer transitions 0/511 dead transitions. [2024-06-28 01:59:39,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 511 transitions, 8227 flow [2024-06-28 01:59:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:59:39,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:59:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 01:59:39,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 01:59:39,982 INFO L175 Difference]: Start difference. First operand has 269 places, 460 transitions, 6781 flow. Second operand 7 states and 156 transitions. [2024-06-28 01:59:39,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 511 transitions, 8227 flow [2024-06-28 01:59:40,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 511 transitions, 8081 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:40,880 INFO L231 Difference]: Finished difference. Result has 273 places, 461 transitions, 6737 flow [2024-06-28 01:59:40,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6635, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6737, PETRI_PLACES=273, PETRI_TRANSITIONS=461} [2024-06-28 01:59:40,881 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 219 predicate places. [2024-06-28 01:59:40,881 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 461 transitions, 6737 flow [2024-06-28 01:59:40,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:40,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:40,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:40,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:59:40,881 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:40,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:40,882 INFO L85 PathProgramCache]: Analyzing trace with hash 271270286, now seen corresponding path program 3 times [2024-06-28 01:59:40,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:40,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379741406] [2024-06-28 01:59:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:40,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:43,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:43,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:43,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379741406] [2024-06-28 01:59:43,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379741406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:43,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:43,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:43,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461079952] [2024-06-28 01:59:43,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:43,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:43,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:43,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:43,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:43,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:43,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 461 transitions, 6737 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:43,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:43,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:43,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:46,516 INFO L124 PetriNetUnfolderBase]: 6848/10719 cut-off events. [2024-06-28 01:59:46,516 INFO L125 PetriNetUnfolderBase]: For 480606/480696 co-relation queries the response was YES. [2024-06-28 01:59:46,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84533 conditions, 10719 events. 6848/10719 cut-off events. For 480606/480696 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 67155 event pairs, 1679 based on Foata normal form. 83/10562 useless extension candidates. Maximal degree in co-relation 84395. Up to 9445 conditions per place. [2024-06-28 01:59:46,650 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 415 selfloop transitions, 80 changer transitions 0/502 dead transitions. [2024-06-28 01:59:46,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 502 transitions, 8159 flow [2024-06-28 01:59:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:59:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:59:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:59:46,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 01:59:46,652 INFO L175 Difference]: Start difference. First operand has 273 places, 461 transitions, 6737 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:59:46,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 502 transitions, 8159 flow [2024-06-28 01:59:47,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 502 transitions, 8054 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:47,823 INFO L231 Difference]: Finished difference. Result has 274 places, 461 transitions, 6810 flow [2024-06-28 01:59:47,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6632, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6810, PETRI_PLACES=274, PETRI_TRANSITIONS=461} [2024-06-28 01:59:47,824 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 220 predicate places. [2024-06-28 01:59:47,824 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 461 transitions, 6810 flow [2024-06-28 01:59:47,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:47,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:47,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:47,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:59:47,825 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:47,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1342493496, now seen corresponding path program 4 times [2024-06-28 01:59:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:47,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682571085] [2024-06-28 01:59:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:47,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:50,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:50,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682571085] [2024-06-28 01:59:50,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682571085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:50,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:50,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:50,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799458525] [2024-06-28 01:59:50,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:50,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:50,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:50,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:50,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:50,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:50,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 461 transitions, 6810 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:50,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:50,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:50,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:53,489 INFO L124 PetriNetUnfolderBase]: 6845/10715 cut-off events. [2024-06-28 01:59:53,489 INFO L125 PetriNetUnfolderBase]: For 487310/487400 co-relation queries the response was YES. [2024-06-28 01:59:53,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84680 conditions, 10715 events. 6845/10715 cut-off events. For 487310/487400 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 67097 event pairs, 1661 based on Foata normal form. 83/10558 useless extension candidates. Maximal degree in co-relation 84541. Up to 9442 conditions per place. [2024-06-28 01:59:53,634 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 410 selfloop transitions, 96 changer transitions 0/513 dead transitions. [2024-06-28 01:59:53,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 513 transitions, 8219 flow [2024-06-28 01:59:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:53,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:59:53,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-06-28 01:59:53,636 INFO L175 Difference]: Start difference. First operand has 274 places, 461 transitions, 6810 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:59:53,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 513 transitions, 8219 flow [2024-06-28 01:59:55,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 513 transitions, 8013 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:55,331 INFO L231 Difference]: Finished difference. Result has 276 places, 463 transitions, 6863 flow [2024-06-28 01:59:55,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6616, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6863, PETRI_PLACES=276, PETRI_TRANSITIONS=463} [2024-06-28 01:59:55,332 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 222 predicate places. [2024-06-28 01:59:55,332 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 463 transitions, 6863 flow [2024-06-28 01:59:55,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:55,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:55,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:55,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:59:55,332 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:55,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:55,333 INFO L85 PathProgramCache]: Analyzing trace with hash 278513126, now seen corresponding path program 5 times [2024-06-28 01:59:55,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:55,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403422615] [2024-06-28 01:59:55,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:55,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:57,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:57,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:57,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403422615] [2024-06-28 01:59:57,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403422615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:57,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:57,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:59:57,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709586284] [2024-06-28 01:59:57,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:57,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:59:57,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:57,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:59:57,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:59:57,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:57,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 463 transitions, 6863 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:57,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:57,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:57,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:00,931 INFO L124 PetriNetUnfolderBase]: 6842/10645 cut-off events. [2024-06-28 02:00:00,931 INFO L125 PetriNetUnfolderBase]: For 487934/487988 co-relation queries the response was YES. [2024-06-28 02:00:01,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84486 conditions, 10645 events. 6842/10645 cut-off events. For 487934/487988 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 65929 event pairs, 1687 based on Foata normal form. 31/10450 useless extension candidates. Maximal degree in co-relation 84347. Up to 9324 conditions per place. [2024-06-28 02:00:01,054 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 385 selfloop transitions, 107 changer transitions 0/499 dead transitions. [2024-06-28 02:00:01,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 499 transitions, 8194 flow [2024-06-28 02:00:01,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:00:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:00:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 02:00:01,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-28 02:00:01,055 INFO L175 Difference]: Start difference. First operand has 276 places, 463 transitions, 6863 flow. Second operand 7 states and 159 transitions. [2024-06-28 02:00:01,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 499 transitions, 8194 flow [2024-06-28 02:00:02,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 499 transitions, 7970 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:02,286 INFO L231 Difference]: Finished difference. Result has 278 places, 465 transitions, 6906 flow [2024-06-28 02:00:02,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6647, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6906, PETRI_PLACES=278, PETRI_TRANSITIONS=465} [2024-06-28 02:00:02,287 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 224 predicate places. [2024-06-28 02:00:02,287 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 465 transitions, 6906 flow [2024-06-28 02:00:02,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:02,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:02,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:02,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:00:02,288 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:02,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:02,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2001416557, now seen corresponding path program 1 times [2024-06-28 02:00:02,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:02,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151620402] [2024-06-28 02:00:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:02,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:05,020 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 02:00:05,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:05,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151620402] [2024-06-28 02:00:05,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151620402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:05,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:05,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:05,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270926302] [2024-06-28 02:00:05,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:05,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:05,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:05,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:05,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:05,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:05,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 465 transitions, 6906 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:05,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:05,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:05,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:08,133 INFO L124 PetriNetUnfolderBase]: 6664/10491 cut-off events. [2024-06-28 02:00:08,134 INFO L125 PetriNetUnfolderBase]: For 493739/493853 co-relation queries the response was YES. [2024-06-28 02:00:08,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83413 conditions, 10491 events. 6664/10491 cut-off events. For 493739/493853 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 66228 event pairs, 1563 based on Foata normal form. 90/10317 useless extension candidates. Maximal degree in co-relation 83274. Up to 9065 conditions per place. [2024-06-28 02:00:08,279 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 404 selfloop transitions, 72 changer transitions 0/505 dead transitions. [2024-06-28 02:00:08,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 505 transitions, 8213 flow [2024-06-28 02:00:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:00:08,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:00:08,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 02:00:08,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 02:00:08,281 INFO L175 Difference]: Start difference. First operand has 278 places, 465 transitions, 6906 flow. Second operand 7 states and 163 transitions. [2024-06-28 02:00:08,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 505 transitions, 8213 flow [2024-06-28 02:00:09,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 505 transitions, 8035 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 02:00:09,767 INFO L231 Difference]: Finished difference. Result has 282 places, 467 transitions, 6933 flow [2024-06-28 02:00:09,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6728, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6933, PETRI_PLACES=282, PETRI_TRANSITIONS=467} [2024-06-28 02:00:09,768 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 228 predicate places. [2024-06-28 02:00:09,768 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 467 transitions, 6933 flow [2024-06-28 02:00:09,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:09,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:09,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:09,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:00:09,769 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:09,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:09,769 INFO L85 PathProgramCache]: Analyzing trace with hash 426921081, now seen corresponding path program 2 times [2024-06-28 02:00:09,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:09,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470459965] [2024-06-28 02:00:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:09,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:13,392 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 02:00:13,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:13,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470459965] [2024-06-28 02:00:13,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470459965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:13,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:13,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:13,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043669238] [2024-06-28 02:00:13,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:13,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:13,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:13,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:13,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 467 transitions, 6933 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:13,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:13,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:13,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:16,670 INFO L124 PetriNetUnfolderBase]: 6732/10609 cut-off events. [2024-06-28 02:00:16,671 INFO L125 PetriNetUnfolderBase]: For 510596/510710 co-relation queries the response was YES. [2024-06-28 02:00:16,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84860 conditions, 10609 events. 6732/10609 cut-off events. For 510596/510710 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 67192 event pairs, 1607 based on Foata normal form. 90/10429 useless extension candidates. Maximal degree in co-relation 84719. Up to 9141 conditions per place. [2024-06-28 02:00:16,800 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 411 selfloop transitions, 75 changer transitions 0/515 dead transitions. [2024-06-28 02:00:16,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 515 transitions, 8358 flow [2024-06-28 02:00:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:16,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 02:00:16,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 02:00:16,811 INFO L175 Difference]: Start difference. First operand has 282 places, 467 transitions, 6933 flow. Second operand 8 states and 184 transitions. [2024-06-28 02:00:16,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 515 transitions, 8358 flow [2024-06-28 02:00:18,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 515 transitions, 8198 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:18,076 INFO L231 Difference]: Finished difference. Result has 285 places, 469 transitions, 6984 flow [2024-06-28 02:00:18,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6773, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6984, PETRI_PLACES=285, PETRI_TRANSITIONS=469} [2024-06-28 02:00:18,077 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 231 predicate places. [2024-06-28 02:00:18,077 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 469 transitions, 6984 flow [2024-06-28 02:00:18,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:18,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:18,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:18,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:00:18,077 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:18,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash 442158201, now seen corresponding path program 3 times [2024-06-28 02:00:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:18,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494000406] [2024-06-28 02:00:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:21,704 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 02:00:21,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:21,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494000406] [2024-06-28 02:00:21,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494000406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:21,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:21,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:21,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956585840] [2024-06-28 02:00:21,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:21,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:21,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:21,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:21,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:21,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 469 transitions, 6984 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:21,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:21,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:21,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:25,271 INFO L124 PetriNetUnfolderBase]: 6720/10569 cut-off events. [2024-06-28 02:00:25,272 INFO L125 PetriNetUnfolderBase]: For 515310/515424 co-relation queries the response was YES. [2024-06-28 02:00:25,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84760 conditions, 10569 events. 6720/10569 cut-off events. For 515310/515424 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 66624 event pairs, 1547 based on Foata normal form. 90/10397 useless extension candidates. Maximal degree in co-relation 84618. Up to 8933 conditions per place. [2024-06-28 02:00:25,390 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 411 selfloop transitions, 77 changer transitions 0/517 dead transitions. [2024-06-28 02:00:25,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 517 transitions, 8413 flow [2024-06-28 02:00:25,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:25,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 02:00:25,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 02:00:25,392 INFO L175 Difference]: Start difference. First operand has 285 places, 469 transitions, 6984 flow. Second operand 8 states and 184 transitions. [2024-06-28 02:00:25,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 517 transitions, 8413 flow [2024-06-28 02:00:26,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 517 transitions, 8237 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 02:00:26,587 INFO L231 Difference]: Finished difference. Result has 287 places, 471 transitions, 7026 flow [2024-06-28 02:00:26,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6808, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7026, PETRI_PLACES=287, PETRI_TRANSITIONS=471} [2024-06-28 02:00:26,587 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 233 predicate places. [2024-06-28 02:00:26,588 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 471 transitions, 7026 flow [2024-06-28 02:00:26,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:26,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:26,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:26,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:00:26,588 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:26,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:26,589 INFO L85 PathProgramCache]: Analyzing trace with hash -392830959, now seen corresponding path program 1 times [2024-06-28 02:00:26,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:26,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939006002] [2024-06-28 02:00:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:26,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:29,052 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 02:00:29,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:29,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939006002] [2024-06-28 02:00:29,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939006002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:29,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:29,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:29,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651331225] [2024-06-28 02:00:29,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:29,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:29,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:29,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:29,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:29,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:29,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 471 transitions, 7026 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:29,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:29,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:29,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:32,190 INFO L124 PetriNetUnfolderBase]: 6795/10773 cut-off events. [2024-06-28 02:00:32,190 INFO L125 PetriNetUnfolderBase]: For 537821/537920 co-relation queries the response was YES. [2024-06-28 02:00:32,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87099 conditions, 10773 events. 6795/10773 cut-off events. For 537821/537920 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 68720 event pairs, 1520 based on Foata normal form. 94/10596 useless extension candidates. Maximal degree in co-relation 86956. Up to 9089 conditions per place. [2024-06-28 02:00:32,346 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 423 selfloop transitions, 98 changer transitions 0/545 dead transitions. [2024-06-28 02:00:32,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 545 transitions, 9131 flow [2024-06-28 02:00:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:32,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:00:32,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 02:00:32,347 INFO L175 Difference]: Start difference. First operand has 287 places, 471 transitions, 7026 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:00:32,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 545 transitions, 9131 flow [2024-06-28 02:00:33,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 545 transitions, 8946 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:00:33,754 INFO L231 Difference]: Finished difference. Result has 292 places, 483 transitions, 7512 flow [2024-06-28 02:00:33,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6841, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7512, PETRI_PLACES=292, PETRI_TRANSITIONS=483} [2024-06-28 02:00:33,755 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 238 predicate places. [2024-06-28 02:00:33,755 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 483 transitions, 7512 flow [2024-06-28 02:00:33,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:33,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:33,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:33,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:00:33,756 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:33,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash -392770385, now seen corresponding path program 1 times [2024-06-28 02:00:33,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:33,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352075927] [2024-06-28 02:00:33,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:33,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:37,185 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 02:00:37,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:37,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352075927] [2024-06-28 02:00:37,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352075927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:37,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:37,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:37,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056996833] [2024-06-28 02:00:37,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:37,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:37,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:37,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:37,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:37,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:00:37,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 483 transitions, 7512 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:37,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:37,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:00:37,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:40,605 INFO L124 PetriNetUnfolderBase]: 7255/11237 cut-off events. [2024-06-28 02:00:40,605 INFO L125 PetriNetUnfolderBase]: For 560647/560663 co-relation queries the response was YES. [2024-06-28 02:00:40,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91995 conditions, 11237 events. 7255/11237 cut-off events. For 560647/560663 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 70446 event pairs, 1746 based on Foata normal form. 16/11030 useless extension candidates. Maximal degree in co-relation 91848. Up to 10043 conditions per place. [2024-06-28 02:00:40,739 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 503 selfloop transitions, 55 changer transitions 0/565 dead transitions. [2024-06-28 02:00:40,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 565 transitions, 9540 flow [2024-06-28 02:00:40,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:40,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:00:40,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-28 02:00:40,741 INFO L175 Difference]: Start difference. First operand has 292 places, 483 transitions, 7512 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:00:40,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 565 transitions, 9540 flow [2024-06-28 02:00:42,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 565 transitions, 9358 flow, removed 70 selfloop flow, removed 2 redundant places. [2024-06-28 02:00:42,104 INFO L231 Difference]: Finished difference. Result has 300 places, 499 transitions, 7750 flow [2024-06-28 02:00:42,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7348, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7750, PETRI_PLACES=300, PETRI_TRANSITIONS=499} [2024-06-28 02:00:42,105 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 246 predicate places. [2024-06-28 02:00:42,105 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 499 transitions, 7750 flow [2024-06-28 02:00:42,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:42,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:42,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:42,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:00:42,106 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:42,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:42,106 INFO L85 PathProgramCache]: Analyzing trace with hash -392770509, now seen corresponding path program 2 times [2024-06-28 02:00:42,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:42,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788423461] [2024-06-28 02:00:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:42,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:44,976 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 02:00:44,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:44,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788423461] [2024-06-28 02:00:44,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788423461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:44,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:44,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:44,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785500652] [2024-06-28 02:00:44,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:44,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:44,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:44,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:44,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:45,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:45,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 499 transitions, 7750 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:45,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:45,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:45,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:48,254 INFO L124 PetriNetUnfolderBase]: 6992/11071 cut-off events. [2024-06-28 02:00:48,255 INFO L125 PetriNetUnfolderBase]: For 566828/566927 co-relation queries the response was YES. [2024-06-28 02:00:48,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90842 conditions, 11071 events. 6992/11071 cut-off events. For 566828/566927 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 70942 event pairs, 1675 based on Foata normal form. 94/10884 useless extension candidates. Maximal degree in co-relation 90691. Up to 9479 conditions per place. [2024-06-28 02:00:48,409 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 425 selfloop transitions, 108 changer transitions 0/560 dead transitions. [2024-06-28 02:00:48,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 560 transitions, 9467 flow [2024-06-28 02:00:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:00:48,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-28 02:00:48,410 INFO L175 Difference]: Start difference. First operand has 300 places, 499 transitions, 7750 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:00:48,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 560 transitions, 9467 flow [2024-06-28 02:00:50,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 560 transitions, 9359 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 02:00:50,092 INFO L231 Difference]: Finished difference. Result has 305 places, 505 transitions, 8062 flow [2024-06-28 02:00:50,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7642, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8062, PETRI_PLACES=305, PETRI_TRANSITIONS=505} [2024-06-28 02:00:50,093 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 251 predicate places. [2024-06-28 02:00:50,093 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 505 transitions, 8062 flow [2024-06-28 02:00:50,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:50,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:50,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:50,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:00:50,094 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:50,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:50,095 INFO L85 PathProgramCache]: Analyzing trace with hash -389969225, now seen corresponding path program 2 times [2024-06-28 02:00:50,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:50,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884856672] [2024-06-28 02:00:50,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:50,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:53,851 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 02:00:53,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:53,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884856672] [2024-06-28 02:00:53,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884856672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:53,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:53,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:53,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150783356] [2024-06-28 02:00:53,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:53,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:53,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:53,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:53,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:53,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:00:53,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 505 transitions, 8062 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:53,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:53,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:00:53,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:57,049 INFO L124 PetriNetUnfolderBase]: 7403/11362 cut-off events. [2024-06-28 02:00:57,049 INFO L125 PetriNetUnfolderBase]: For 580232/580248 co-relation queries the response was YES. [2024-06-28 02:00:57,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94029 conditions, 11362 events. 7403/11362 cut-off events. For 580232/580248 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 70633 event pairs, 1776 based on Foata normal form. 16/11182 useless extension candidates. Maximal degree in co-relation 93876. Up to 10532 conditions per place. [2024-06-28 02:00:57,211 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 527 selfloop transitions, 25 changer transitions 0/559 dead transitions. [2024-06-28 02:00:57,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 559 transitions, 9579 flow [2024-06-28 02:00:57,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:57,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:57,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 02:00:57,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-28 02:00:57,213 INFO L175 Difference]: Start difference. First operand has 305 places, 505 transitions, 8062 flow. Second operand 8 states and 177 transitions. [2024-06-28 02:00:57,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 559 transitions, 9579 flow [2024-06-28 02:00:59,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 559 transitions, 9330 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 02:00:59,301 INFO L231 Difference]: Finished difference. Result has 310 places, 514 transitions, 8063 flow [2024-06-28 02:00:59,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7813, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8063, PETRI_PLACES=310, PETRI_TRANSITIONS=514} [2024-06-28 02:00:59,302 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 256 predicate places. [2024-06-28 02:00:59,302 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 514 transitions, 8063 flow [2024-06-28 02:00:59,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:59,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:59,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:59,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:00:59,303 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:59,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:59,304 INFO L85 PathProgramCache]: Analyzing trace with hash -389973999, now seen corresponding path program 3 times [2024-06-28 02:00:59,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:59,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785649633] [2024-06-28 02:00:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:59,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:03,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:03,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785649633] [2024-06-28 02:01:03,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785649633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:03,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:03,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:03,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360196030] [2024-06-28 02:01:03,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:03,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:03,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:03,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:03,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:03,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:03,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 514 transitions, 8063 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:03,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:03,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:03,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:06,448 INFO L124 PetriNetUnfolderBase]: 7058/10952 cut-off events. [2024-06-28 02:01:06,449 INFO L125 PetriNetUnfolderBase]: For 586926/587025 co-relation queries the response was YES. [2024-06-28 02:01:06,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91401 conditions, 10952 events. 7058/10952 cut-off events. For 586926/587025 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 68936 event pairs, 1720 based on Foata normal form. 94/10835 useless extension candidates. Maximal degree in co-relation 91245. Up to 9801 conditions per place. [2024-06-28 02:01:06,609 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 487 selfloop transitions, 46 changer transitions 0/563 dead transitions. [2024-06-28 02:01:06,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 563 transitions, 9492 flow [2024-06-28 02:01:06,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:01:06,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:01:06,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 02:01:06,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739583333333333 [2024-06-28 02:01:06,611 INFO L175 Difference]: Start difference. First operand has 310 places, 514 transitions, 8063 flow. Second operand 8 states and 182 transitions. [2024-06-28 02:01:06,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 563 transitions, 9492 flow [2024-06-28 02:01:08,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 563 transitions, 9356 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 02:01:08,638 INFO L231 Difference]: Finished difference. Result has 314 places, 516 transitions, 8085 flow [2024-06-28 02:01:08,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7927, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8085, PETRI_PLACES=314, PETRI_TRANSITIONS=516} [2024-06-28 02:01:08,639 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 260 predicate places. [2024-06-28 02:01:08,639 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 516 transitions, 8085 flow [2024-06-28 02:01:08,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:08,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:08,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:08,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:01:08,639 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:08,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:08,640 INFO L85 PathProgramCache]: Analyzing trace with hash -389973875, now seen corresponding path program 3 times [2024-06-28 02:01:08,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:08,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922826458] [2024-06-28 02:01:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:08,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:12,449 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 02:01:12,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:12,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922826458] [2024-06-28 02:01:12,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922826458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:12,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:12,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:12,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353494260] [2024-06-28 02:01:12,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:12,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:12,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:12,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:12,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:12,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:01:12,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 516 transitions, 8085 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:12,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:12,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:01:12,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:15,940 INFO L124 PetriNetUnfolderBase]: 7465/11418 cut-off events. [2024-06-28 02:01:15,940 INFO L125 PetriNetUnfolderBase]: For 599865/599881 co-relation queries the response was YES. [2024-06-28 02:01:16,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94827 conditions, 11418 events. 7465/11418 cut-off events. For 599865/599881 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 70835 event pairs, 1775 based on Foata normal form. 16/11248 useless extension candidates. Maximal degree in co-relation 94670. Up to 10573 conditions per place. [2024-06-28 02:01:16,070 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 531 selfloop transitions, 30 changer transitions 0/568 dead transitions. [2024-06-28 02:01:16,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 568 transitions, 9596 flow [2024-06-28 02:01:16,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:01:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:01:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 02:01:16,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 02:01:16,071 INFO L175 Difference]: Start difference. First operand has 314 places, 516 transitions, 8085 flow. Second operand 8 states and 180 transitions. [2024-06-28 02:01:16,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 568 transitions, 9596 flow [2024-06-28 02:01:17,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 568 transitions, 9444 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 02:01:17,696 INFO L231 Difference]: Finished difference. Result has 317 places, 521 transitions, 8087 flow [2024-06-28 02:01:17,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7935, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8087, PETRI_PLACES=317, PETRI_TRANSITIONS=521} [2024-06-28 02:01:17,697 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 263 predicate places. [2024-06-28 02:01:17,697 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 521 transitions, 8087 flow [2024-06-28 02:01:17,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:17,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:17,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:17,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:01:17,698 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:17,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:17,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1997011303, now seen corresponding path program 4 times [2024-06-28 02:01:17,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:17,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503671388] [2024-06-28 02:01:17,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:17,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:20,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:20,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503671388] [2024-06-28 02:01:20,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503671388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:20,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:20,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:20,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286004464] [2024-06-28 02:01:20,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:20,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:20,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:20,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:20,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:20,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:01:20,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 521 transitions, 8087 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:20,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:20,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:01:20,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:23,783 INFO L124 PetriNetUnfolderBase]: 7529/11748 cut-off events. [2024-06-28 02:01:23,783 INFO L125 PetriNetUnfolderBase]: For 607589/607605 co-relation queries the response was YES. [2024-06-28 02:01:23,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95542 conditions, 11748 events. 7529/11748 cut-off events. For 607589/607605 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 74464 event pairs, 1769 based on Foata normal form. 17/11498 useless extension candidates. Maximal degree in co-relation 95383. Up to 10582 conditions per place. [2024-06-28 02:01:23,944 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 531 selfloop transitions, 49 changer transitions 0/587 dead transitions. [2024-06-28 02:01:23,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 587 transitions, 9960 flow [2024-06-28 02:01:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:01:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:01:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-28 02:01:23,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-28 02:01:23,946 INFO L175 Difference]: Start difference. First operand has 317 places, 521 transitions, 8087 flow. Second operand 8 states and 178 transitions. [2024-06-28 02:01:23,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 587 transitions, 9960 flow [2024-06-28 02:01:26,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 587 transitions, 9896 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 02:01:26,055 INFO L231 Difference]: Finished difference. Result has 322 places, 537 transitions, 8527 flow [2024-06-28 02:01:26,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8023, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8527, PETRI_PLACES=322, PETRI_TRANSITIONS=537} [2024-06-28 02:01:26,055 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 268 predicate places. [2024-06-28 02:01:26,055 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 537 transitions, 8527 flow [2024-06-28 02:01:26,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:26,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:26,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:26,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:01:26,056 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:26,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:26,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1997188933, now seen corresponding path program 5 times [2024-06-28 02:01:26,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:26,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342632116] [2024-06-28 02:01:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:26,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:29,020 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 02:01:29,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:29,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342632116] [2024-06-28 02:01:29,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342632116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:29,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:29,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:29,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267726990] [2024-06-28 02:01:29,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:29,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:29,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:29,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:29,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:29,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:01:29,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 537 transitions, 8527 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:29,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:29,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:01:29,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:32,806 INFO L124 PetriNetUnfolderBase]: 7897/12031 cut-off events. [2024-06-28 02:01:32,807 INFO L125 PetriNetUnfolderBase]: For 680861/680877 co-relation queries the response was YES. [2024-06-28 02:01:32,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103243 conditions, 12031 events. 7897/12031 cut-off events. For 680861/680877 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 74623 event pairs, 1608 based on Foata normal form. 16/11857 useless extension candidates. Maximal degree in co-relation 103081. Up to 10082 conditions per place. [2024-06-28 02:01:32,990 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 496 selfloop transitions, 145 changer transitions 0/648 dead transitions. [2024-06-28 02:01:32,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 648 transitions, 11601 flow [2024-06-28 02:01:32,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:32,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 02:01:32,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837962962962963 [2024-06-28 02:01:32,991 INFO L175 Difference]: Start difference. First operand has 322 places, 537 transitions, 8527 flow. Second operand 9 states and 209 transitions. [2024-06-28 02:01:32,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 648 transitions, 11601 flow [2024-06-28 02:01:35,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 648 transitions, 11092 flow, removed 221 selfloop flow, removed 4 redundant places. [2024-06-28 02:01:35,008 INFO L231 Difference]: Finished difference. Result has 329 places, 581 transitions, 9610 flow [2024-06-28 02:01:35,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8196, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9610, PETRI_PLACES=329, PETRI_TRANSITIONS=581} [2024-06-28 02:01:35,009 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 275 predicate places. [2024-06-28 02:01:35,009 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 581 transitions, 9610 flow [2024-06-28 02:01:35,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:35,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:35,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:35,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:01:35,009 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:35,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:35,010 INFO L85 PathProgramCache]: Analyzing trace with hash -274682829, now seen corresponding path program 4 times [2024-06-28 02:01:35,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:35,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064271139] [2024-06-28 02:01:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:35,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:38,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:38,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064271139] [2024-06-28 02:01:38,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064271139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:38,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:38,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:38,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114590337] [2024-06-28 02:01:38,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:38,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:38,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:38,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:38,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:38,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 581 transitions, 9610 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:38,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:38,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:38,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:42,681 INFO L124 PetriNetUnfolderBase]: 7731/11907 cut-off events. [2024-06-28 02:01:42,681 INFO L125 PetriNetUnfolderBase]: For 729621/729780 co-relation queries the response was YES. [2024-06-28 02:01:42,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106781 conditions, 11907 events. 7731/11907 cut-off events. For 729621/729780 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 75027 event pairs, 1756 based on Foata normal form. 82/11761 useless extension candidates. Maximal degree in co-relation 106615. Up to 10581 conditions per place. [2024-06-28 02:01:42,839 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 562 selfloop transitions, 71 changer transitions 0/675 dead transitions. [2024-06-28 02:01:42,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 675 transitions, 11830 flow [2024-06-28 02:01:42,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:01:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:01:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 212 transitions. [2024-06-28 02:01:42,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 02:01:42,843 INFO L175 Difference]: Start difference. First operand has 329 places, 581 transitions, 9610 flow. Second operand 10 states and 212 transitions. [2024-06-28 02:01:42,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 675 transitions, 11830 flow [2024-06-28 02:01:45,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 675 transitions, 11554 flow, removed 121 selfloop flow, removed 3 redundant places. [2024-06-28 02:01:45,399 INFO L231 Difference]: Finished difference. Result has 340 places, 627 transitions, 10361 flow [2024-06-28 02:01:45,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9358, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10361, PETRI_PLACES=340, PETRI_TRANSITIONS=627} [2024-06-28 02:01:45,399 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 286 predicate places. [2024-06-28 02:01:45,399 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 627 transitions, 10361 flow [2024-06-28 02:01:45,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:45,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:45,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:45,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:01:45,400 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:45,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:45,400 INFO L85 PathProgramCache]: Analyzing trace with hash 228833499, now seen corresponding path program 6 times [2024-06-28 02:01:45,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:45,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557871662] [2024-06-28 02:01:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:45,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:48,663 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 02:01:48,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:48,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557871662] [2024-06-28 02:01:48,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557871662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:48,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:48,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:48,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622232802] [2024-06-28 02:01:48,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:48,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:48,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:48,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:48,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:48,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:01:48,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 627 transitions, 10361 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:48,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:48,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:01:48,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:53,432 INFO L124 PetriNetUnfolderBase]: 8359/12995 cut-off events. [2024-06-28 02:01:53,432 INFO L125 PetriNetUnfolderBase]: For 764951/764969 co-relation queries the response was YES. [2024-06-28 02:01:53,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114906 conditions, 12995 events. 8359/12995 cut-off events. For 764951/764969 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 82910 event pairs, 1616 based on Foata normal form. 20/12719 useless extension candidates. Maximal degree in co-relation 114733. Up to 10653 conditions per place. [2024-06-28 02:01:53,596 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 565 selfloop transitions, 193 changer transitions 0/765 dead transitions. [2024-06-28 02:01:53,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 765 transitions, 14088 flow [2024-06-28 02:01:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 02:01:53,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 02:01:53,598 INFO L175 Difference]: Start difference. First operand has 340 places, 627 transitions, 10361 flow. Second operand 9 states and 212 transitions. [2024-06-28 02:01:53,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 765 transitions, 14088 flow [2024-06-28 02:01:56,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 765 transitions, 13756 flow, removed 139 selfloop flow, removed 2 redundant places. [2024-06-28 02:01:56,508 INFO L231 Difference]: Finished difference. Result has 349 places, 694 transitions, 12345 flow [2024-06-28 02:01:56,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10066, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12345, PETRI_PLACES=349, PETRI_TRANSITIONS=694} [2024-06-28 02:01:56,509 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 295 predicate places. [2024-06-28 02:01:56,509 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 694 transitions, 12345 flow [2024-06-28 02:01:56,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:56,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:56,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:56,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:01:56,509 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:56,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:56,510 INFO L85 PathProgramCache]: Analyzing trace with hash 175955745, now seen corresponding path program 5 times [2024-06-28 02:01:56,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:56,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282593969] [2024-06-28 02:01:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:56,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:59,814 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 02:01:59,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:59,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282593969] [2024-06-28 02:01:59,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282593969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:59,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:59,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:59,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557336637] [2024-06-28 02:01:59,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:59,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:59,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:59,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:59,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:59,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:59,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 694 transitions, 12345 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:59,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:59,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:59,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:04,877 INFO L124 PetriNetUnfolderBase]: 8187/12888 cut-off events. [2024-06-28 02:02:04,877 INFO L125 PetriNetUnfolderBase]: For 822425/822556 co-relation queries the response was YES. [2024-06-28 02:02:04,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119728 conditions, 12888 events. 8187/12888 cut-off events. For 822425/822556 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 83738 event pairs, 1583 based on Foata normal form. 98/12640 useless extension candidates. Maximal degree in co-relation 119551. Up to 10211 conditions per place. [2024-06-28 02:02:05,070 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 525 selfloop transitions, 260 changer transitions 0/839 dead transitions. [2024-06-28 02:02:05,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 839 transitions, 16779 flow [2024-06-28 02:02:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:02:05,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:02:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 246 transitions. [2024-06-28 02:02:05,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 02:02:05,071 INFO L175 Difference]: Start difference. First operand has 349 places, 694 transitions, 12345 flow. Second operand 11 states and 246 transitions. [2024-06-28 02:02:05,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 839 transitions, 16779 flow [2024-06-28 02:02:08,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 839 transitions, 15795 flow, removed 474 selfloop flow, removed 3 redundant places. [2024-06-28 02:02:08,565 INFO L231 Difference]: Finished difference. Result has 360 places, 778 transitions, 14575 flow [2024-06-28 02:02:08,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11747, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14575, PETRI_PLACES=360, PETRI_TRANSITIONS=778} [2024-06-28 02:02:08,566 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 306 predicate places. [2024-06-28 02:02:08,566 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 778 transitions, 14575 flow [2024-06-28 02:02:08,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:08,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:08,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:08,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:02:08,567 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:08,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:08,567 INFO L85 PathProgramCache]: Analyzing trace with hash 118650758, now seen corresponding path program 1 times [2024-06-28 02:02:08,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:08,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221326538] [2024-06-28 02:02:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:08,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:08,651 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 02:02:08,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:08,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221326538] [2024-06-28 02:02:08,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221326538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:08,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:08,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:02:08,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751552486] [2024-06-28 02:02:08,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:08,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:02:08,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:08,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:02:08,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:02:08,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 02:02:08,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 778 transitions, 14575 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:08,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:08,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 02:02:08,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:11,894 INFO L124 PetriNetUnfolderBase]: 5623/9203 cut-off events. [2024-06-28 02:02:11,894 INFO L125 PetriNetUnfolderBase]: For 733490/734187 co-relation queries the response was YES. [2024-06-28 02:02:11,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87697 conditions, 9203 events. 5623/9203 cut-off events. For 733490/734187 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 60791 event pairs, 927 based on Foata normal form. 671/9482 useless extension candidates. Maximal degree in co-relation 87539. Up to 3799 conditions per place. [2024-06-28 02:02:12,010 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 275 selfloop transitions, 84 changer transitions 0/494 dead transitions. [2024-06-28 02:02:12,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 494 transitions, 9922 flow [2024-06-28 02:02:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:02:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:02:12,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-28 02:02:12,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2024-06-28 02:02:12,012 INFO L175 Difference]: Start difference. First operand has 360 places, 778 transitions, 14575 flow. Second operand 4 states and 119 transitions. [2024-06-28 02:02:12,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 494 transitions, 9922 flow [2024-06-28 02:02:13,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 494 transitions, 8440 flow, removed 277 selfloop flow, removed 73 redundant places. [2024-06-28 02:02:13,805 INFO L231 Difference]: Finished difference. Result has 291 places, 425 transitions, 6774 flow [2024-06-28 02:02:13,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6296, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6774, PETRI_PLACES=291, PETRI_TRANSITIONS=425} [2024-06-28 02:02:13,806 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 237 predicate places. [2024-06-28 02:02:13,806 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 425 transitions, 6774 flow [2024-06-28 02:02:13,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:13,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:13,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:02:13,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:02:13,807 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:13,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:13,807 INFO L85 PathProgramCache]: Analyzing trace with hash -179628716, now seen corresponding path program 1 times [2024-06-28 02:02:13,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:13,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922793592] [2024-06-28 02:02:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:13,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:16,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:16,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922793592] [2024-06-28 02:02:16,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922793592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:16,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:16,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:02:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177265484] [2024-06-28 02:02:16,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:16,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:02:16,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:16,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:02:16,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:02:16,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:02:16,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 425 transitions, 6774 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:16,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:16,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:02:16,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand