./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe014_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/safe014_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/safe014_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe014_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 01:59:44,640 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:59:44,735 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:59:44,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:59:44,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:59:44,781 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:59:44,782 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:59:44,782 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:59:44,783 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:59:44,786 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:59:44,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:59:44,787 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:59:44,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:59:44,789 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:59:44,789 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:59:44,790 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:59:44,790 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:59:44,790 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:59:44,790 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:59:44,791 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:59:44,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:59:44,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:59:44,793 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:59:44,793 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:59:44,793 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:59:44,793 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:59:44,794 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:59:44,794 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:59:44,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:59:44,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:59:44,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:59:44,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:59:44,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:59:44,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:59:44,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:59:44,797 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:59:44,797 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:59:44,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:59:44,797 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:59:44,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:59:44,798 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:59:44,798 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:59:44,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:59:44,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:59:45,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:59:45,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:59:45,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:59:45,060 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:59:45,061 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:59:45,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe014_power.opt.yml/witness.yml [2024-06-28 01:59:45,264 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:59:45,264 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:59:45,265 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_power.opt.i [2024-06-28 01:59:46,629 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:59:46,891 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:59:46,892 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_power.opt.i [2024-06-28 01:59:46,906 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e196654b/417b451353584b4e96b8dec8cc5e27bc/FLAG041516ab6 [2024-06-28 01:59:46,921 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e196654b/417b451353584b4e96b8dec8cc5e27bc [2024-06-28 01:59:46,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:59:46,925 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:59:46,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:59:46,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:59:46,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:59:46,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:59:45" (1/2) ... [2024-06-28 01:59:46,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18aeb591 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:59:46, skipping insertion in model container [2024-06-28 01:59:46,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:59:45" (1/2) ... [2024-06-28 01:59:46,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e24cb8a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:59:46, skipping insertion in model container [2024-06-28 01:59:46,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:59:46" (2/2) ... [2024-06-28 01:59:46,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18aeb591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:46, skipping insertion in model container [2024-06-28 01:59:46,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:59:46" (2/2) ... [2024-06-28 01:59:46,939 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:59:47,086 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:59:47,087 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ((((((((((((((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2)) [2024-06-28 01:59:47,088 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2)) [2024-06-28 01:59:47,088 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2)) [2024-06-28 01:59:47,088 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:59:47,088 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-28 01:59:47,139 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:59:47,331 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/safe014_power.opt.i[994,1007] [2024-06-28 01:59:47,549 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:59:47,562 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:59:47,601 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/safe014_power.opt.i[994,1007] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:59:47,741 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:59:47,787 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:59:47,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47 WrapperNode [2024-06-28 01:59:47,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:59:47,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:59:47,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:59:47,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:59:47,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (1/1) ... [2024-06-28 01:59:47,827 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (1/1) ... [2024-06-28 01:59:47,869 INFO L138 Inliner]: procedures = 175, calls = 81, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 250 [2024-06-28 01:59:47,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:59:47,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:59:47,871 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:59:47,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:59:47,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (1/1) ... [2024-06-28 01:59:47,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (1/1) ... [2024-06-28 01:59:47,897 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (1/1) ... [2024-06-28 01:59:47,916 INFO L175 MemorySlicer]: Split 40 memory accesses to 2 slices as follows [2, 38]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 4 writes are split as follows [0, 4]. [2024-06-28 01:59:47,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (1/1) ... [2024-06-28 01:59:47,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (1/1) ... [2024-06-28 01:59:47,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (1/1) ... [2024-06-28 01:59:47,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (1/1) ... [2024-06-28 01:59:47,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (1/1) ... [2024-06-28 01:59:47,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (1/1) ... [2024-06-28 01:59:47,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:59:47,963 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:59:47,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:59:47,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:59:47,964 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (1/1) ... [2024-06-28 01:59:47,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:59:47,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:59:48,002 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 01:59:48,010 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 01:59:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:59:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:59:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:59:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:59:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:59:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:59:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:59:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:59:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:59:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:59:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:59:48,045 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:59:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:59:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:59:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:59:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:59:48,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:59:48,049 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 01:59:48,307 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:59:48,310 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:59:48,927 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:59:48,928 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:59:49,347 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:59:49,348 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:59:49,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:59:49 BoogieIcfgContainer [2024-06-28 01:59:49,348 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:59:49,350 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:59:49,350 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:59:49,353 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:59:49,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:59:45" (1/4) ... [2024-06-28 01:59:49,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111fce03 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:59:49, skipping insertion in model container [2024-06-28 01:59:49,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:59:46" (2/4) ... [2024-06-28 01:59:49,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111fce03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:59:49, skipping insertion in model container [2024-06-28 01:59:49,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:59:47" (3/4) ... [2024-06-28 01:59:49,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111fce03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:59:49, skipping insertion in model container [2024-06-28 01:59:49,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:59:49" (4/4) ... [2024-06-28 01:59:49,356 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_power.opt.i [2024-06-28 01:59:49,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:59:49,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:59:49,374 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:59:49,437 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:59:49,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:59:49,499 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:59:49,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:59:49,504 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 63 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 01:59:49,504 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:59:49,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:59:49,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:59:49,521 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;@4ced7e38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:59:49,522 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:59:49,527 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:59:49,527 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:59:49,527 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:59:49,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:49,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:59:49,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:49,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash 749308203, now seen corresponding path program 1 times [2024-06-28 01:59:49,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:49,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032647247] [2024-06-28 01:59:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:51,491 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 01:59:51,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:51,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032647247] [2024-06-28 01:59:51,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032647247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:51,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:51,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:59:51,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537758776] [2024-06-28 01:59:51,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:51,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:59:51,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:59:51,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:59:51,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:59:51,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:51,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:51,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:59:51,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:52,789 INFO L124 PetriNetUnfolderBase]: 2904/4659 cut-off events. [2024-06-28 01:59:52,789 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-28 01:59:52,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8936 conditions, 4659 events. 2904/4659 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 28433 event pairs, 1850 based on Foata normal form. 120/4307 useless extension candidates. Maximal degree in co-relation 8924. Up to 4208 conditions per place. [2024-06-28 01:59:52,824 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 45 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2024-06-28 01:59:52,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 241 flow [2024-06-28 01:59:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:59:52,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:59:52,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-28 01:59:52,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6736111111111112 [2024-06-28 01:59:52,838 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 97 transitions. [2024-06-28 01:59:52,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 241 flow [2024-06-28 01:59:52,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 236 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:52,848 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 138 flow [2024-06-28 01:59:52,849 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 01:59:52,853 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:59:52,853 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 138 flow [2024-06-28 01:59:52,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:52,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:52,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:52,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:59:52,855 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:52,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:52,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1468194048, now seen corresponding path program 1 times [2024-06-28 01:59:52,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:52,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649242927] [2024-06-28 01:59:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:52,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:55,496 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 01:59:55,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:55,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649242927] [2024-06-28 01:59:55,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649242927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:55,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:55,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:59:55,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475806073] [2024-06-28 01:59:55,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:55,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:59:55,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:59:55,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:59:55,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:59:55,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 01:59:55,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:55,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:59:55,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:56,737 INFO L124 PetriNetUnfolderBase]: 2841/4312 cut-off events. [2024-06-28 01:59:56,738 INFO L125 PetriNetUnfolderBase]: For 674/684 co-relation queries the response was YES. [2024-06-28 01:59:56,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9719 conditions, 4312 events. 2841/4312 cut-off events. For 674/684 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 24592 event pairs, 1215 based on Foata normal form. 6/4102 useless extension candidates. Maximal degree in co-relation 9707. Up to 4086 conditions per place. [2024-06-28 01:59:56,766 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 64 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-06-28 01:59:56,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 85 transitions, 375 flow [2024-06-28 01:59:56,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:59:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:59:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-06-28 01:59:56,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-28 01:59:56,773 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 138 flow. Second operand 4 states and 132 transitions. [2024-06-28 01:59:56,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 85 transitions, 375 flow [2024-06-28 01:59:56,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 85 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:59:56,781 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 200 flow [2024-06-28 01:59:56,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-28 01:59:56,785 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2024-06-28 01:59:56,785 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 200 flow [2024-06-28 01:59:56,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 01:59:56,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:56,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:56,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:59:56,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:56,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash 980040554, now seen corresponding path program 1 times [2024-06-28 01:59:56,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:56,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689322843] [2024-06-28 01:59:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:56,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:59,631 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 01:59:59,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:59,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689322843] [2024-06-28 01:59:59,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689322843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:59,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:59,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:59:59,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186825196] [2024-06-28 01:59:59,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:59,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:59:59,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:59,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:59:59,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:59:59,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:59:59,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:59,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:59,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:59:59,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:01,342 INFO L124 PetriNetUnfolderBase]: 3605/5387 cut-off events. [2024-06-28 02:00:01,342 INFO L125 PetriNetUnfolderBase]: For 3595/3636 co-relation queries the response was YES. [2024-06-28 02:00:01,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13904 conditions, 5387 events. 3605/5387 cut-off events. For 3595/3636 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 30460 event pairs, 973 based on Foata normal form. 17/5366 useless extension candidates. Maximal degree in co-relation 13889. Up to 5062 conditions per place. [2024-06-28 02:00:01,383 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 93 selfloop transitions, 16 changer transitions 0/119 dead transitions. [2024-06-28 02:00:01,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 119 transitions, 588 flow [2024-06-28 02:00:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-28 02:00:01,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6493055555555556 [2024-06-28 02:00:01,388 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 200 flow. Second operand 6 states and 187 transitions. [2024-06-28 02:00:01,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 119 transitions, 588 flow [2024-06-28 02:00:01,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 119 transitions, 588 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 02:00:01,398 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 283 flow [2024-06-28 02:00:01,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-28 02:00:01,400 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-06-28 02:00:01,400 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 283 flow [2024-06-28 02:00:01,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:01,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:01,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:01,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:00:01,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:01,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:01,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1587522311, now seen corresponding path program 1 times [2024-06-28 02:00:01,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:01,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54305765] [2024-06-28 02:00:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:02,894 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 02:00:02,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:02,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54305765] [2024-06-28 02:00:02,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54305765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:02,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:02,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:00:02,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404438738] [2024-06-28 02:00:02,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:02,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:00:02,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:02,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:00:02,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:00:02,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:02,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:02,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:02,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:02,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:04,619 INFO L124 PetriNetUnfolderBase]: 4211/6636 cut-off events. [2024-06-28 02:00:04,619 INFO L125 PetriNetUnfolderBase]: For 6519/6519 co-relation queries the response was YES. [2024-06-28 02:00:04,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17874 conditions, 6636 events. 4211/6636 cut-off events. For 6519/6519 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 40113 event pairs, 1828 based on Foata normal form. 2/6462 useless extension candidates. Maximal degree in co-relation 17854. Up to 6006 conditions per place. [2024-06-28 02:00:04,664 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 73 selfloop transitions, 13 changer transitions 0/94 dead transitions. [2024-06-28 02:00:04,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 573 flow [2024-06-28 02:00:04,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:00:04,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:00:04,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 02:00:04,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 02:00:04,666 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 283 flow. Second operand 5 states and 125 transitions. [2024-06-28 02:00:04,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 573 flow [2024-06-28 02:00:04,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 94 transitions, 535 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:00:04,680 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 357 flow [2024-06-28 02:00:04,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=357, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-06-28 02:00:04,681 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-28 02:00:04,682 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 357 flow [2024-06-28 02:00:04,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:04,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:04,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:04,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:00:04,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:04,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:04,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1957437414, now seen corresponding path program 1 times [2024-06-28 02:00:04,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:04,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446612435] [2024-06-28 02:00:04,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:04,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:06,258 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 02:00:06,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:06,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446612435] [2024-06-28 02:00:06,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446612435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:06,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:06,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:00:06,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366462851] [2024-06-28 02:00:06,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:06,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:00:06,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:06,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:00:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:00:06,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:06,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 02:00:06,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:06,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:06,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:07,889 INFO L124 PetriNetUnfolderBase]: 4206/6638 cut-off events. [2024-06-28 02:00:07,890 INFO L125 PetriNetUnfolderBase]: For 8350/8353 co-relation queries the response was YES. [2024-06-28 02:00:07,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19361 conditions, 6638 events. 4206/6638 cut-off events. For 8350/8353 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 40264 event pairs, 1844 based on Foata normal form. 4/6449 useless extension candidates. Maximal degree in co-relation 19338. Up to 6001 conditions per place. [2024-06-28 02:00:07,933 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 72 selfloop transitions, 13 changer transitions 0/93 dead transitions. [2024-06-28 02:00:07,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 582 flow [2024-06-28 02:00:07,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:00:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:00:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-28 02:00:07,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 02:00:07,941 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 357 flow. Second operand 5 states and 123 transitions. [2024-06-28 02:00:07,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 582 flow [2024-06-28 02:00:07,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 574 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 02:00:07,956 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 389 flow [2024-06-28 02:00:07,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2024-06-28 02:00:07,959 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-28 02:00:07,959 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 389 flow [2024-06-28 02:00:07,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 02:00:07,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:07,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:07,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:00:07,960 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:07,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash -557891314, now seen corresponding path program 1 times [2024-06-28 02:00:07,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:07,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285163744] [2024-06-28 02:00:07,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:07,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:10,739 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 02:00:10,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:10,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285163744] [2024-06-28 02:00:10,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285163744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:10,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:10,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:00:10,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168270701] [2024-06-28 02:00:10,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:10,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:00:10,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:00:10,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:00:10,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:10,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 389 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 02:00:10,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:10,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:10,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:12,656 INFO L124 PetriNetUnfolderBase]: 4240/6283 cut-off events. [2024-06-28 02:00:12,656 INFO L125 PetriNetUnfolderBase]: For 9281/9281 co-relation queries the response was YES. [2024-06-28 02:00:12,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19354 conditions, 6283 events. 4240/6283 cut-off events. For 9281/9281 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 34709 event pairs, 1476 based on Foata normal form. 2/6225 useless extension candidates. Maximal degree in co-relation 19328. Up to 5893 conditions per place. [2024-06-28 02:00:12,695 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 102 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2024-06-28 02:00:12,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 131 transitions, 840 flow [2024-06-28 02:00:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:12,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-28 02:00:12,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 02:00:12,697 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 389 flow. Second operand 6 states and 162 transitions. [2024-06-28 02:00:12,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 131 transitions, 840 flow [2024-06-28 02:00:12,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 131 transitions, 821 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 02:00:12,714 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 521 flow [2024-06-28 02:00:12,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=521, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-06-28 02:00:12,715 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2024-06-28 02:00:12,715 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 521 flow [2024-06-28 02:00:12,715 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 02:00:12,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:12,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:12,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:00:12,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:12,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:12,717 INFO L85 PathProgramCache]: Analyzing trace with hash -551427814, now seen corresponding path program 2 times [2024-06-28 02:00:12,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:12,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440415438] [2024-06-28 02:00:12,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:12,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:15,106 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 02:00:15,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:15,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440415438] [2024-06-28 02:00:15,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440415438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:15,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:15,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:00:15,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436652197] [2024-06-28 02:00:15,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:15,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:00:15,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:00:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:00:15,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:15,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 521 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 02:00:15,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:15,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:15,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:16,812 INFO L124 PetriNetUnfolderBase]: 4235/6270 cut-off events. [2024-06-28 02:00:16,812 INFO L125 PetriNetUnfolderBase]: For 13490/13499 co-relation queries the response was YES. [2024-06-28 02:00:16,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21385 conditions, 6270 events. 4235/6270 cut-off events. For 13490/13499 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 34992 event pairs, 1320 based on Foata normal form. 8/6215 useless extension candidates. Maximal degree in co-relation 21355. Up to 5890 conditions per place. [2024-06-28 02:00:16,850 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 98 selfloop transitions, 26 changer transitions 0/132 dead transitions. [2024-06-28 02:00:16,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 132 transitions, 949 flow [2024-06-28 02:00:16,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 02:00:16,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451388888888888 [2024-06-28 02:00:16,853 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 521 flow. Second operand 6 states and 157 transitions. [2024-06-28 02:00:16,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 132 transitions, 949 flow [2024-06-28 02:00:16,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 132 transitions, 941 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 02:00:16,890 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 661 flow [2024-06-28 02:00:16,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=661, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-06-28 02:00:16,890 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2024-06-28 02:00:16,891 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 661 flow [2024-06-28 02:00:16,891 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 02:00:16,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:16,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:16,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:00:16,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:16,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash -295737533, now seen corresponding path program 1 times [2024-06-28 02:00:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:16,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111381442] [2024-06-28 02:00:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:16,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:19,275 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 02:00:19,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:19,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111381442] [2024-06-28 02:00:19,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111381442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:19,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:19,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:00:19,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132813427] [2024-06-28 02:00:19,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:19,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:00:19,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:19,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:00:19,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:00:19,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:19,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 661 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 02:00:19,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:19,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:19,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:21,211 INFO L124 PetriNetUnfolderBase]: 4568/6821 cut-off events. [2024-06-28 02:00:21,211 INFO L125 PetriNetUnfolderBase]: For 17458/17464 co-relation queries the response was YES. [2024-06-28 02:00:21,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24439 conditions, 6821 events. 4568/6821 cut-off events. For 17458/17464 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 39176 event pairs, 1168 based on Foata normal form. 9/6767 useless extension candidates. Maximal degree in co-relation 24404. Up to 6189 conditions per place. [2024-06-28 02:00:21,254 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 152 selfloop transitions, 42 changer transitions 0/202 dead transitions. [2024-06-28 02:00:21,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 202 transitions, 1499 flow [2024-06-28 02:00:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:21,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-06-28 02:00:21,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-06-28 02:00:21,257 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 661 flow. Second operand 9 states and 250 transitions. [2024-06-28 02:00:21,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 202 transitions, 1499 flow [2024-06-28 02:00:21,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 202 transitions, 1489 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 02:00:21,291 INFO L231 Difference]: Finished difference. Result has 95 places, 114 transitions, 969 flow [2024-06-28 02:00:21,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=969, PETRI_PLACES=95, PETRI_TRANSITIONS=114} [2024-06-28 02:00:21,293 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-06-28 02:00:21,293 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 114 transitions, 969 flow [2024-06-28 02:00:21,294 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 02:00:21,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:21,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:21,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:00:21,294 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:21,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:21,295 INFO L85 PathProgramCache]: Analyzing trace with hash -114764985, now seen corresponding path program 2 times [2024-06-28 02:00:21,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:21,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704250116] [2024-06-28 02:00:21,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:21,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:24,018 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 02:00:24,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:24,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704250116] [2024-06-28 02:00:24,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704250116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:24,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:24,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:00:24,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863374325] [2024-06-28 02:00:24,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:24,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:00:24,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:24,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:00:24,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:00:24,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:24,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 114 transitions, 969 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 02:00:24,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:24,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:24,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:25,909 INFO L124 PetriNetUnfolderBase]: 4715/7037 cut-off events. [2024-06-28 02:00:25,909 INFO L125 PetriNetUnfolderBase]: For 26178/26186 co-relation queries the response was YES. [2024-06-28 02:00:25,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28441 conditions, 7037 events. 4715/7037 cut-off events. For 26178/26186 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 40450 event pairs, 1069 based on Foata normal form. 11/6987 useless extension candidates. Maximal degree in co-relation 28400. Up to 6274 conditions per place. [2024-06-28 02:00:25,963 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 142 selfloop transitions, 51 changer transitions 0/201 dead transitions. [2024-06-28 02:00:25,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 201 transitions, 1725 flow [2024-06-28 02:00:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:25,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-28 02:00:25,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755208333333334 [2024-06-28 02:00:25,965 INFO L175 Difference]: Start difference. First operand has 95 places, 114 transitions, 969 flow. Second operand 8 states and 221 transitions. [2024-06-28 02:00:25,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 201 transitions, 1725 flow [2024-06-28 02:00:26,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 201 transitions, 1682 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 02:00:26,025 INFO L231 Difference]: Finished difference. Result has 102 places, 124 transitions, 1165 flow [2024-06-28 02:00:26,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1165, PETRI_PLACES=102, PETRI_TRANSITIONS=124} [2024-06-28 02:00:26,026 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-28 02:00:26,026 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 124 transitions, 1165 flow [2024-06-28 02:00:26,026 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 02:00:26,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:26,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:26,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:00:26,027 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:26,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1864105629, now seen corresponding path program 3 times [2024-06-28 02:00:26,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:26,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166165082] [2024-06-28 02:00:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:26,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:28,668 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 02:00:28,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:28,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166165082] [2024-06-28 02:00:28,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166165082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:28,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:28,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:00:28,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602559987] [2024-06-28 02:00:28,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:28,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:00:28,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:28,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:00:28,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:00:28,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:28,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 124 transitions, 1165 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 02:00:28,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:28,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:28,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:30,731 INFO L124 PetriNetUnfolderBase]: 4749/7059 cut-off events. [2024-06-28 02:00:30,732 INFO L125 PetriNetUnfolderBase]: For 35819/35821 co-relation queries the response was YES. [2024-06-28 02:00:30,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31417 conditions, 7059 events. 4749/7059 cut-off events. For 35819/35821 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 39825 event pairs, 1235 based on Foata normal form. 2/6983 useless extension candidates. Maximal degree in co-relation 31373. Up to 6254 conditions per place. [2024-06-28 02:00:30,778 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 147 selfloop transitions, 47 changer transitions 0/202 dead transitions. [2024-06-28 02:00:30,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 202 transitions, 1980 flow [2024-06-28 02:00:30,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:00:30,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:00:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-28 02:00:30,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2024-06-28 02:00:30,780 INFO L175 Difference]: Start difference. First operand has 102 places, 124 transitions, 1165 flow. Second operand 7 states and 190 transitions. [2024-06-28 02:00:30,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 202 transitions, 1980 flow [2024-06-28 02:00:30,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 202 transitions, 1880 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 02:00:30,847 INFO L231 Difference]: Finished difference. Result has 107 places, 144 transitions, 1466 flow [2024-06-28 02:00:30,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1466, PETRI_PLACES=107, PETRI_TRANSITIONS=144} [2024-06-28 02:00:30,848 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-28 02:00:30,848 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 144 transitions, 1466 flow [2024-06-28 02:00:30,849 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 02:00:30,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:30,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:30,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:00:30,849 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:30,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:30,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2126711169, now seen corresponding path program 1 times [2024-06-28 02:00:30,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:30,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64414532] [2024-06-28 02:00:30,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:30,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:32,884 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 02:00:32,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:32,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64414532] [2024-06-28 02:00:32,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64414532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:32,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:32,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:00:32,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876913659] [2024-06-28 02:00:32,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:32,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:00:32,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:32,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:00:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:00:32,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:32,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 144 transitions, 1466 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:32,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:32,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:32,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:34,596 INFO L124 PetriNetUnfolderBase]: 4783/7113 cut-off events. [2024-06-28 02:00:34,597 INFO L125 PetriNetUnfolderBase]: For 40949/40957 co-relation queries the response was YES. [2024-06-28 02:00:34,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33164 conditions, 7113 events. 4783/7113 cut-off events. For 40949/40957 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 40009 event pairs, 1311 based on Foata normal form. 10/7041 useless extension candidates. Maximal degree in co-relation 33116. Up to 6591 conditions per place. [2024-06-28 02:00:34,652 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 157 selfloop transitions, 29 changer transitions 0/194 dead transitions. [2024-06-28 02:00:34,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 194 transitions, 2050 flow [2024-06-28 02:00:34,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:34,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:34,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-28 02:00:34,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 02:00:34,654 INFO L175 Difference]: Start difference. First operand has 107 places, 144 transitions, 1466 flow. Second operand 6 states and 162 transitions. [2024-06-28 02:00:34,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 194 transitions, 2050 flow [2024-06-28 02:00:34,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 194 transitions, 2000 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 02:00:34,711 INFO L231 Difference]: Finished difference. Result has 111 places, 147 transitions, 1517 flow [2024-06-28 02:00:34,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1517, PETRI_PLACES=111, PETRI_TRANSITIONS=147} [2024-06-28 02:00:34,712 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-28 02:00:34,712 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 147 transitions, 1517 flow [2024-06-28 02:00:34,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:34,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:34,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:34,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:00:34,713 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:34,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:34,714 INFO L85 PathProgramCache]: Analyzing trace with hash 85845501, now seen corresponding path program 2 times [2024-06-28 02:00:34,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:34,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118134443] [2024-06-28 02:00:34,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:34,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:36,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:36,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118134443] [2024-06-28 02:00:36,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118134443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:36,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:36,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:00:36,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342140144] [2024-06-28 02:00:36,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:36,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:00:36,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:36,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:00:36,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:00:36,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:36,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 147 transitions, 1517 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:36,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:36,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:36,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:38,284 INFO L124 PetriNetUnfolderBase]: 4778/7126 cut-off events. [2024-06-28 02:00:38,284 INFO L125 PetriNetUnfolderBase]: For 40407/40453 co-relation queries the response was YES. [2024-06-28 02:00:38,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32910 conditions, 7126 events. 4778/7126 cut-off events. For 40407/40453 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 40562 event pairs, 1193 based on Foata normal form. 34/7074 useless extension candidates. Maximal degree in co-relation 32860. Up to 6586 conditions per place. [2024-06-28 02:00:38,325 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 155 selfloop transitions, 29 changer transitions 0/192 dead transitions. [2024-06-28 02:00:38,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 192 transitions, 2045 flow [2024-06-28 02:00:38,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 02:00:38,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2024-06-28 02:00:38,327 INFO L175 Difference]: Start difference. First operand has 111 places, 147 transitions, 1517 flow. Second operand 6 states and 155 transitions. [2024-06-28 02:00:38,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 192 transitions, 2045 flow [2024-06-28 02:00:38,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 192 transitions, 2004 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 02:00:38,375 INFO L231 Difference]: Finished difference. Result has 114 places, 149 transitions, 1571 flow [2024-06-28 02:00:38,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1571, PETRI_PLACES=114, PETRI_TRANSITIONS=149} [2024-06-28 02:00:38,376 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-28 02:00:38,377 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 149 transitions, 1571 flow [2024-06-28 02:00:38,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:38,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:38,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:38,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:00:38,378 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:38,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:38,378 INFO L85 PathProgramCache]: Analyzing trace with hash 90970545, now seen corresponding path program 4 times [2024-06-28 02:00:38,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:38,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394862096] [2024-06-28 02:00:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:38,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:40,400 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 02:00:40,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394862096] [2024-06-28 02:00:40,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394862096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:40,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:40,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:00:40,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026832714] [2024-06-28 02:00:40,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:40,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:00:40,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:40,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:00:40,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:00:40,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:40,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 149 transitions, 1571 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 02:00:40,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:40,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:40,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:42,393 INFO L124 PetriNetUnfolderBase]: 4773/7062 cut-off events. [2024-06-28 02:00:42,393 INFO L125 PetriNetUnfolderBase]: For 42575/42586 co-relation queries the response was YES. [2024-06-28 02:00:42,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33043 conditions, 7062 events. 4773/7062 cut-off events. For 42575/42586 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 39531 event pairs, 1241 based on Foata normal form. 4/6963 useless extension candidates. Maximal degree in co-relation 32992. Up to 6270 conditions per place. [2024-06-28 02:00:42,457 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 144 selfloop transitions, 55 changer transitions 0/207 dead transitions. [2024-06-28 02:00:42,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 207 transitions, 2213 flow [2024-06-28 02:00:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:00:42,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:00:42,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 02:00:42,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5505952380952381 [2024-06-28 02:00:42,462 INFO L175 Difference]: Start difference. First operand has 114 places, 149 transitions, 1571 flow. Second operand 7 states and 185 transitions. [2024-06-28 02:00:42,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 207 transitions, 2213 flow [2024-06-28 02:00:42,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 207 transitions, 2170 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 02:00:42,512 INFO L231 Difference]: Finished difference. Result has 118 places, 152 transitions, 1686 flow [2024-06-28 02:00:42,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1686, PETRI_PLACES=118, PETRI_TRANSITIONS=152} [2024-06-28 02:00:42,513 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-28 02:00:42,513 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 152 transitions, 1686 flow [2024-06-28 02:00:42,514 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 02:00:42,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:42,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:42,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:00:42,514 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:42,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:42,514 INFO L85 PathProgramCache]: Analyzing trace with hash 98366649, now seen corresponding path program 1 times [2024-06-28 02:00:42,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:42,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068270310] [2024-06-28 02:00:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:42,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:44,078 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 02:00:44,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:44,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068270310] [2024-06-28 02:00:44,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068270310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:44,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:44,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:00:44,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921749747] [2024-06-28 02:00:44,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:44,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:00:44,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:44,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:00:44,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:00:44,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:44,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 152 transitions, 1686 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:44,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:44,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:44,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:45,671 INFO L124 PetriNetUnfolderBase]: 4765/7502 cut-off events. [2024-06-28 02:00:45,671 INFO L125 PetriNetUnfolderBase]: For 49829/49837 co-relation queries the response was YES. [2024-06-28 02:00:45,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34239 conditions, 7502 events. 4765/7502 cut-off events. For 49829/49837 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 45661 event pairs, 1570 based on Foata normal form. 8/7282 useless extension candidates. Maximal degree in co-relation 34187. Up to 6717 conditions per place. [2024-06-28 02:00:45,724 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 163 selfloop transitions, 16 changer transitions 0/187 dead transitions. [2024-06-28 02:00:45,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 187 transitions, 2160 flow [2024-06-28 02:00:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:00:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:00:45,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 02:00:45,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 02:00:45,726 INFO L175 Difference]: Start difference. First operand has 118 places, 152 transitions, 1686 flow. Second operand 6 states and 147 transitions. [2024-06-28 02:00:45,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 187 transitions, 2160 flow [2024-06-28 02:00:45,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 187 transitions, 2069 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 02:00:45,787 INFO L231 Difference]: Finished difference. Result has 120 places, 155 transitions, 1671 flow [2024-06-28 02:00:45,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1671, PETRI_PLACES=120, PETRI_TRANSITIONS=155} [2024-06-28 02:00:45,788 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-28 02:00:45,788 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 155 transitions, 1671 flow [2024-06-28 02:00:45,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:45,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:45,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:45,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:00:45,789 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:45,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:45,789 INFO L85 PathProgramCache]: Analyzing trace with hash -121025722, now seen corresponding path program 1 times [2024-06-28 02:00:45,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:45,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774453766] [2024-06-28 02:00:45,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:45,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:48,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:48,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774453766] [2024-06-28 02:00:48,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774453766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:48,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:48,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:00:48,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512258146] [2024-06-28 02:00:48,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:48,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:00:48,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:48,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:00:48,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:00:48,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:48,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 155 transitions, 1671 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:48,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:48,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:48,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:49,919 INFO L124 PetriNetUnfolderBase]: 4747/7081 cut-off events. [2024-06-28 02:00:49,919 INFO L125 PetriNetUnfolderBase]: For 50213/50221 co-relation queries the response was YES. [2024-06-28 02:00:49,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33903 conditions, 7081 events. 4747/7081 cut-off events. For 50213/50221 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 40380 event pairs, 1153 based on Foata normal form. 14/7014 useless extension candidates. Maximal degree in co-relation 33849. Up to 6324 conditions per place. [2024-06-28 02:00:49,970 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 155 selfloop transitions, 65 changer transitions 0/228 dead transitions. [2024-06-28 02:00:49,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 228 transitions, 2345 flow [2024-06-28 02:00:49,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:49,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:49,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-28 02:00:49,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-28 02:00:49,973 INFO L175 Difference]: Start difference. First operand has 120 places, 155 transitions, 1671 flow. Second operand 8 states and 219 transitions. [2024-06-28 02:00:49,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 228 transitions, 2345 flow [2024-06-28 02:00:50,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 228 transitions, 2271 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 02:00:50,045 INFO L231 Difference]: Finished difference. Result has 124 places, 155 transitions, 1749 flow [2024-06-28 02:00:50,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1749, PETRI_PLACES=124, PETRI_TRANSITIONS=155} [2024-06-28 02:00:50,045 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-28 02:00:50,046 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 155 transitions, 1749 flow [2024-06-28 02:00:50,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:50,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:50,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:50,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:00:50,046 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:50,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:50,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1952706632, now seen corresponding path program 2 times [2024-06-28 02:00:50,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:50,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339862613] [2024-06-28 02:00:50,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:50,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:52,090 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 02:00:52,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:52,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339862613] [2024-06-28 02:00:52,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339862613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:52,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:52,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:00:52,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533042976] [2024-06-28 02:00:52,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:52,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:00:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:52,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:00:52,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:00:52,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:52,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 155 transitions, 1749 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:52,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:52,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:52,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:54,100 INFO L124 PetriNetUnfolderBase]: 4820/7199 cut-off events. [2024-06-28 02:00:54,101 INFO L125 PetriNetUnfolderBase]: For 55689/55691 co-relation queries the response was YES. [2024-06-28 02:00:54,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35092 conditions, 7199 events. 4820/7199 cut-off events. For 55689/55691 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 41021 event pairs, 1184 based on Foata normal form. 2/7095 useless extension candidates. Maximal degree in co-relation 35037. Up to 6313 conditions per place. [2024-06-28 02:00:54,155 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 156 selfloop transitions, 56 changer transitions 0/220 dead transitions. [2024-06-28 02:00:54,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 220 transitions, 2535 flow [2024-06-28 02:00:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:00:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:00:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-28 02:00:54,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 02:00:54,157 INFO L175 Difference]: Start difference. First operand has 124 places, 155 transitions, 1749 flow. Second operand 7 states and 192 transitions. [2024-06-28 02:00:54,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 220 transitions, 2535 flow [2024-06-28 02:00:54,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 220 transitions, 2383 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:00:54,217 INFO L231 Difference]: Finished difference. Result has 124 places, 161 transitions, 1797 flow [2024-06-28 02:00:54,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1797, PETRI_PLACES=124, PETRI_TRANSITIONS=161} [2024-06-28 02:00:54,217 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-28 02:00:54,217 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 161 transitions, 1797 flow [2024-06-28 02:00:54,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:54,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:54,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:54,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:00:54,218 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:54,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:54,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1952701052, now seen corresponding path program 3 times [2024-06-28 02:00:54,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:54,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362838300] [2024-06-28 02:00:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:54,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:56,638 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 02:00:56,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:56,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362838300] [2024-06-28 02:00:56,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362838300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:56,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:56,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:00:56,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647078088] [2024-06-28 02:00:56,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:56,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:00:56,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:56,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:00:56,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:00:56,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:00:56,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 161 transitions, 1797 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 02:00:56,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:56,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:00:56,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:58,875 INFO L124 PetriNetUnfolderBase]: 4854/7244 cut-off events. [2024-06-28 02:00:58,875 INFO L125 PetriNetUnfolderBase]: For 53576/53578 co-relation queries the response was YES. [2024-06-28 02:00:58,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34871 conditions, 7244 events. 4854/7244 cut-off events. For 53576/53578 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 41191 event pairs, 1187 based on Foata normal form. 2/7138 useless extension candidates. Maximal degree in co-relation 34815. Up to 6348 conditions per place. [2024-06-28 02:00:58,922 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 163 selfloop transitions, 62 changer transitions 0/233 dead transitions. [2024-06-28 02:00:58,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 233 transitions, 2549 flow [2024-06-28 02:00:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:00:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:00:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-28 02:00:58,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 02:00:58,924 INFO L175 Difference]: Start difference. First operand has 124 places, 161 transitions, 1797 flow. Second operand 8 states and 216 transitions. [2024-06-28 02:00:58,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 233 transitions, 2549 flow [2024-06-28 02:00:58,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 233 transitions, 2469 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 02:00:58,998 INFO L231 Difference]: Finished difference. Result has 129 places, 164 transitions, 1889 flow [2024-06-28 02:00:58,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1889, PETRI_PLACES=129, PETRI_TRANSITIONS=164} [2024-06-28 02:00:58,999 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-28 02:00:58,999 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 164 transitions, 1889 flow [2024-06-28 02:00:58,999 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 02:00:58,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:58,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:58,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:00:59,000 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:59,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:59,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1641112780, now seen corresponding path program 4 times [2024-06-28 02:00:59,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:59,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053971451] [2024-06-28 02:00:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:59,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:01,401 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 02:01:01,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:01,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053971451] [2024-06-28 02:01:01,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053971451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:01,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:01,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:01,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524546396] [2024-06-28 02:01:01,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:01,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:01,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:01,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:01,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:01,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 164 transitions, 1889 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 02:01:01,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:01,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:01,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:03,517 INFO L124 PetriNetUnfolderBase]: 4849/7196 cut-off events. [2024-06-28 02:01:03,517 INFO L125 PetriNetUnfolderBase]: For 59719/59730 co-relation queries the response was YES. [2024-06-28 02:01:03,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35005 conditions, 7196 events. 4849/7196 cut-off events. For 59719/59730 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 40436 event pairs, 1249 based on Foata normal form. 4/7077 useless extension candidates. Maximal degree in co-relation 34948. Up to 6343 conditions per place. [2024-06-28 02:01:03,573 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 159 selfloop transitions, 64 changer transitions 0/231 dead transitions. [2024-06-28 02:01:03,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 231 transitions, 2601 flow [2024-06-28 02:01:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:01:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:01:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 02:01:03,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494791666666666 [2024-06-28 02:01:03,575 INFO L175 Difference]: Start difference. First operand has 129 places, 164 transitions, 1889 flow. Second operand 8 states and 211 transitions. [2024-06-28 02:01:03,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 231 transitions, 2601 flow [2024-06-28 02:01:03,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 231 transitions, 2459 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:01:03,654 INFO L231 Difference]: Finished difference. Result has 131 places, 164 transitions, 1883 flow [2024-06-28 02:01:03,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1883, PETRI_PLACES=131, PETRI_TRANSITIONS=164} [2024-06-28 02:01:03,655 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-06-28 02:01:03,655 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 164 transitions, 1883 flow [2024-06-28 02:01:03,655 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 02:01:03,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:03,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:03,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:01:03,656 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:03,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:03,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1245876730, now seen corresponding path program 5 times [2024-06-28 02:01:03,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:03,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951627858] [2024-06-28 02:01:03,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:03,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:05,657 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 02:01:05,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:05,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951627858] [2024-06-28 02:01:05,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951627858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:05,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:05,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:05,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053772494] [2024-06-28 02:01:05,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:05,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:05,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:05,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:05,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:05,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:05,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 164 transitions, 1883 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:05,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:05,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:05,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:07,717 INFO L124 PetriNetUnfolderBase]: 4844/7237 cut-off events. [2024-06-28 02:01:07,717 INFO L125 PetriNetUnfolderBase]: For 62443/62479 co-relation queries the response was YES. [2024-06-28 02:01:07,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35106 conditions, 7237 events. 4844/7237 cut-off events. For 62443/62479 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 41290 event pairs, 1237 based on Foata normal form. 15/7135 useless extension candidates. Maximal degree in co-relation 35048. Up to 6338 conditions per place. [2024-06-28 02:01:07,771 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 152 selfloop transitions, 58 changer transitions 0/218 dead transitions. [2024-06-28 02:01:07,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 218 transitions, 2480 flow [2024-06-28 02:01:07,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 02:01:07,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-28 02:01:07,773 INFO L175 Difference]: Start difference. First operand has 131 places, 164 transitions, 1883 flow. Second operand 7 states and 183 transitions. [2024-06-28 02:01:07,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 218 transitions, 2480 flow [2024-06-28 02:01:07,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 218 transitions, 2336 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 02:01:07,860 INFO L231 Difference]: Finished difference. Result has 132 places, 165 transitions, 1878 flow [2024-06-28 02:01:07,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1878, PETRI_PLACES=132, PETRI_TRANSITIONS=165} [2024-06-28 02:01:07,860 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 78 predicate places. [2024-06-28 02:01:07,860 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 165 transitions, 1878 flow [2024-06-28 02:01:07,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:07,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:07,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:07,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:01:07,861 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:07,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:07,862 INFO L85 PathProgramCache]: Analyzing trace with hash 11384956, now seen corresponding path program 1 times [2024-06-28 02:01:07,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:07,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912080394] [2024-06-28 02:01:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:07,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:10,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:10,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912080394] [2024-06-28 02:01:10,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912080394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:10,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:10,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:10,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898295811] [2024-06-28 02:01:10,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:10,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:10,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:10,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:10,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:10,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:10,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 165 transitions, 1878 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 02:01:10,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:10,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:10,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:12,532 INFO L124 PetriNetUnfolderBase]: 5626/8366 cut-off events. [2024-06-28 02:01:12,532 INFO L125 PetriNetUnfolderBase]: For 72819/72827 co-relation queries the response was YES. [2024-06-28 02:01:12,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40832 conditions, 8366 events. 5626/8366 cut-off events. For 72819/72827 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 48622 event pairs, 736 based on Foata normal form. 14/8261 useless extension candidates. Maximal degree in co-relation 40773. Up to 6567 conditions per place. [2024-06-28 02:01:12,587 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 188 selfloop transitions, 71 changer transitions 0/267 dead transitions. [2024-06-28 02:01:12,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 267 transitions, 2868 flow [2024-06-28 02:01:12,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:12,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 254 transitions. [2024-06-28 02:01:12,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5879629629629629 [2024-06-28 02:01:12,589 INFO L175 Difference]: Start difference. First operand has 132 places, 165 transitions, 1878 flow. Second operand 9 states and 254 transitions. [2024-06-28 02:01:12,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 267 transitions, 2868 flow [2024-06-28 02:01:12,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 267 transitions, 2776 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 02:01:12,693 INFO L231 Difference]: Finished difference. Result has 138 places, 175 transitions, 2080 flow [2024-06-28 02:01:12,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2080, PETRI_PLACES=138, PETRI_TRANSITIONS=175} [2024-06-28 02:01:12,694 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2024-06-28 02:01:12,694 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 175 transitions, 2080 flow [2024-06-28 02:01:12,694 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 02:01:12,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:12,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:12,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:01:12,695 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:12,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:12,696 INFO L85 PathProgramCache]: Analyzing trace with hash 288895770, now seen corresponding path program 2 times [2024-06-28 02:01:12,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:12,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691052149] [2024-06-28 02:01:12,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:12,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:15,152 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 02:01:15,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:15,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691052149] [2024-06-28 02:01:15,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691052149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:15,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:15,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:15,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198366981] [2024-06-28 02:01:15,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:15,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:15,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:15,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:15,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:15,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:15,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 175 transitions, 2080 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 02:01:15,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:15,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:15,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:17,239 INFO L124 PetriNetUnfolderBase]: 5611/8343 cut-off events. [2024-06-28 02:01:17,239 INFO L125 PetriNetUnfolderBase]: For 82079/82087 co-relation queries the response was YES. [2024-06-28 02:01:17,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42673 conditions, 8343 events. 5611/8343 cut-off events. For 82079/82087 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 48393 event pairs, 1109 based on Foata normal form. 14/8238 useless extension candidates. Maximal degree in co-relation 42611. Up to 7425 conditions per place. [2024-06-28 02:01:17,302 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 187 selfloop transitions, 69 changer transitions 0/264 dead transitions. [2024-06-28 02:01:17,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 264 transitions, 2909 flow [2024-06-28 02:01:17,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-28 02:01:17,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5717592592592593 [2024-06-28 02:01:17,304 INFO L175 Difference]: Start difference. First operand has 138 places, 175 transitions, 2080 flow. Second operand 9 states and 247 transitions. [2024-06-28 02:01:17,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 264 transitions, 2909 flow [2024-06-28 02:01:17,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 264 transitions, 2791 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 02:01:17,439 INFO L231 Difference]: Finished difference. Result has 142 places, 179 transitions, 2181 flow [2024-06-28 02:01:17,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1966, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2181, PETRI_PLACES=142, PETRI_TRANSITIONS=179} [2024-06-28 02:01:17,439 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 88 predicate places. [2024-06-28 02:01:17,439 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 179 transitions, 2181 flow [2024-06-28 02:01:17,439 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 02:01:17,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:17,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:17,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:01:17,440 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:17,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:17,440 INFO L85 PathProgramCache]: Analyzing trace with hash -635138330, now seen corresponding path program 3 times [2024-06-28 02:01:17,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:17,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603763405] [2024-06-28 02:01:17,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:19,829 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 02:01:19,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:19,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603763405] [2024-06-28 02:01:19,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603763405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:19,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:19,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:19,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451954936] [2024-06-28 02:01:19,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:19,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:19,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:19,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:19,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:19,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:19,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 179 transitions, 2181 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 02:01:19,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:19,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:19,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:22,112 INFO L124 PetriNetUnfolderBase]: 5666/8402 cut-off events. [2024-06-28 02:01:22,112 INFO L125 PetriNetUnfolderBase]: For 90672/90674 co-relation queries the response was YES. [2024-06-28 02:01:22,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43957 conditions, 8402 events. 5666/8402 cut-off events. For 90672/90674 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 48390 event pairs, 1138 based on Foata normal form. 4/8261 useless extension candidates. Maximal degree in co-relation 43893. Up to 7442 conditions per place. [2024-06-28 02:01:22,180 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 176 selfloop transitions, 65 changer transitions 0/249 dead transitions. [2024-06-28 02:01:22,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 249 transitions, 2897 flow [2024-06-28 02:01:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:01:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:01:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 02:01:22,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572916666666666 [2024-06-28 02:01:22,181 INFO L175 Difference]: Start difference. First operand has 142 places, 179 transitions, 2181 flow. Second operand 8 states and 214 transitions. [2024-06-28 02:01:22,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 249 transitions, 2897 flow [2024-06-28 02:01:22,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 249 transitions, 2735 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:01:22,342 INFO L231 Difference]: Finished difference. Result has 143 places, 181 transitions, 2194 flow [2024-06-28 02:01:22,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2194, PETRI_PLACES=143, PETRI_TRANSITIONS=181} [2024-06-28 02:01:22,343 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-28 02:01:22,343 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 181 transitions, 2194 flow [2024-06-28 02:01:22,343 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 02:01:22,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:22,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:22,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:01:22,343 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:22,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash -634953632, now seen corresponding path program 1 times [2024-06-28 02:01:22,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:22,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480858667] [2024-06-28 02:01:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:22,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:24,320 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 02:01:24,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:24,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480858667] [2024-06-28 02:01:24,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480858667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:24,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:24,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:24,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389400087] [2024-06-28 02:01:24,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:24,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:24,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:24,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:24,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:24,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:24,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 181 transitions, 2194 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:24,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:24,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:24,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:26,301 INFO L124 PetriNetUnfolderBase]: 5721/8500 cut-off events. [2024-06-28 02:01:26,301 INFO L125 PetriNetUnfolderBase]: For 97350/97358 co-relation queries the response was YES. [2024-06-28 02:01:26,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44602 conditions, 8500 events. 5721/8500 cut-off events. For 97350/97358 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 49400 event pairs, 1092 based on Foata normal form. 12/8358 useless extension candidates. Maximal degree in co-relation 44537. Up to 7862 conditions per place. [2024-06-28 02:01:26,365 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 200 selfloop transitions, 33 changer transitions 0/241 dead transitions. [2024-06-28 02:01:26,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 241 transitions, 2860 flow [2024-06-28 02:01:26,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 02:01:26,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-28 02:01:26,367 INFO L175 Difference]: Start difference. First operand has 143 places, 181 transitions, 2194 flow. Second operand 7 states and 186 transitions. [2024-06-28 02:01:26,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 241 transitions, 2860 flow [2024-06-28 02:01:26,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 241 transitions, 2707 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:01:26,580 INFO L231 Difference]: Finished difference. Result has 144 places, 183 transitions, 2142 flow [2024-06-28 02:01:26,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2041, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2142, PETRI_PLACES=144, PETRI_TRANSITIONS=183} [2024-06-28 02:01:26,581 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 90 predicate places. [2024-06-28 02:01:26,581 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 183 transitions, 2142 flow [2024-06-28 02:01:26,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:26,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:26,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:26,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:01:26,582 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:26,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:26,582 INFO L85 PathProgramCache]: Analyzing trace with hash 665107844, now seen corresponding path program 4 times [2024-06-28 02:01:26,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:26,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722814245] [2024-06-28 02:01:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:26,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:28,832 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 02:01:28,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:28,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722814245] [2024-06-28 02:01:28,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722814245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:28,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:28,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:28,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116272629] [2024-06-28 02:01:28,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:28,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:28,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:28,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:28,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:28,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:28,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 183 transitions, 2142 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 02:01:28,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:28,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:28,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:31,184 INFO L124 PetriNetUnfolderBase]: 5713/8423 cut-off events. [2024-06-28 02:01:31,184 INFO L125 PetriNetUnfolderBase]: For 101611/101622 co-relation queries the response was YES. [2024-06-28 02:01:31,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44365 conditions, 8423 events. 5713/8423 cut-off events. For 101611/101622 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 47995 event pairs, 1202 based on Foata normal form. 6/8249 useless extension candidates. Maximal degree in co-relation 44299. Up to 7511 conditions per place. [2024-06-28 02:01:31,245 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 176 selfloop transitions, 67 changer transitions 0/251 dead transitions. [2024-06-28 02:01:31,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 251 transitions, 2868 flow [2024-06-28 02:01:31,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:01:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:01:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 02:01:31,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-28 02:01:31,247 INFO L175 Difference]: Start difference. First operand has 144 places, 183 transitions, 2142 flow. Second operand 8 states and 209 transitions. [2024-06-28 02:01:31,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 251 transitions, 2868 flow [2024-06-28 02:01:31,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 251 transitions, 2789 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 02:01:31,432 INFO L231 Difference]: Finished difference. Result has 147 places, 185 transitions, 2248 flow [2024-06-28 02:01:31,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2248, PETRI_PLACES=147, PETRI_TRANSITIONS=185} [2024-06-28 02:01:31,433 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2024-06-28 02:01:31,433 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 185 transitions, 2248 flow [2024-06-28 02:01:31,433 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 02:01:31,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:31,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:31,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:01:31,434 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:31,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:31,434 INFO L85 PathProgramCache]: Analyzing trace with hash 198769004, now seen corresponding path program 2 times [2024-06-28 02:01:31,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:31,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699730297] [2024-06-28 02:01:31,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:31,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:33,624 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 02:01:33,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:33,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699730297] [2024-06-28 02:01:33,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699730297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:33,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:33,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:33,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283153740] [2024-06-28 02:01:33,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:33,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:33,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:33,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:33,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:33,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:33,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 185 transitions, 2248 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:33,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:33,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:33,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:35,631 INFO L124 PetriNetUnfolderBase]: 5768/8584 cut-off events. [2024-06-28 02:01:35,632 INFO L125 PetriNetUnfolderBase]: For 111566/111612 co-relation queries the response was YES. [2024-06-28 02:01:35,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45783 conditions, 8584 events. 5768/8584 cut-off events. For 111566/111612 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 50043 event pairs, 1131 based on Foata normal form. 36/8459 useless extension candidates. Maximal degree in co-relation 45716. Up to 7931 conditions per place. [2024-06-28 02:01:35,695 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 204 selfloop transitions, 31 changer transitions 0/243 dead transitions. [2024-06-28 02:01:35,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 243 transitions, 2924 flow [2024-06-28 02:01:35,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 02:01:35,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386904761904762 [2024-06-28 02:01:35,697 INFO L175 Difference]: Start difference. First operand has 147 places, 185 transitions, 2248 flow. Second operand 7 states and 181 transitions. [2024-06-28 02:01:35,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 243 transitions, 2924 flow [2024-06-28 02:01:35,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 243 transitions, 2761 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 02:01:35,882 INFO L231 Difference]: Finished difference. Result has 148 places, 187 transitions, 2188 flow [2024-06-28 02:01:35,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2188, PETRI_PLACES=148, PETRI_TRANSITIONS=187} [2024-06-28 02:01:35,883 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-28 02:01:35,883 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 187 transitions, 2188 flow [2024-06-28 02:01:35,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:35,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:35,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:35,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:01:35,884 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:35,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash 901764572, now seen corresponding path program 3 times [2024-06-28 02:01:35,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:35,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420734112] [2024-06-28 02:01:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:35,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:37,751 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 02:01:37,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:37,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420734112] [2024-06-28 02:01:37,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420734112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:37,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:37,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:37,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335632255] [2024-06-28 02:01:37,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:37,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:37,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:37,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:37,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:37,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:37,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 187 transitions, 2188 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:37,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:37,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:37,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:39,828 INFO L124 PetriNetUnfolderBase]: 5760/8572 cut-off events. [2024-06-28 02:01:39,828 INFO L125 PetriNetUnfolderBase]: For 113551/113597 co-relation queries the response was YES. [2024-06-28 02:01:39,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45494 conditions, 8572 events. 5760/8572 cut-off events. For 113551/113597 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 50120 event pairs, 996 based on Foata normal form. 36/8447 useless extension candidates. Maximal degree in co-relation 45426. Up to 7756 conditions per place. [2024-06-28 02:01:39,895 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 203 selfloop transitions, 37 changer transitions 0/248 dead transitions. [2024-06-28 02:01:39,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 248 transitions, 2916 flow [2024-06-28 02:01:39,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:01:39,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:01:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 02:01:39,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 02:01:39,897 INFO L175 Difference]: Start difference. First operand has 148 places, 187 transitions, 2188 flow. Second operand 7 states and 182 transitions. [2024-06-28 02:01:39,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 248 transitions, 2916 flow [2024-06-28 02:01:40,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 248 transitions, 2835 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:01:40,139 INFO L231 Difference]: Finished difference. Result has 151 places, 191 transitions, 2277 flow [2024-06-28 02:01:40,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2277, PETRI_PLACES=151, PETRI_TRANSITIONS=191} [2024-06-28 02:01:40,140 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-28 02:01:40,140 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 191 transitions, 2277 flow [2024-06-28 02:01:40,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:40,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:40,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:40,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:01:40,140 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:40,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:40,141 INFO L85 PathProgramCache]: Analyzing trace with hash 293533656, now seen corresponding path program 1 times [2024-06-28 02:01:40,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:40,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407892645] [2024-06-28 02:01:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:40,198 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 02:01:40,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:40,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407892645] [2024-06-28 02:01:40,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407892645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:40,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:40,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:01:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031279626] [2024-06-28 02:01:40,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:40,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:01:40,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:01:40,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:01:40,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-06-28 02:01:40,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 191 transitions, 2277 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:40,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:40,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-06-28 02:01:40,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:41,012 INFO L124 PetriNetUnfolderBase]: 2390/4333 cut-off events. [2024-06-28 02:01:41,012 INFO L125 PetriNetUnfolderBase]: For 78089/79227 co-relation queries the response was YES. [2024-06-28 02:01:41,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20006 conditions, 4333 events. 2390/4333 cut-off events. For 78089/79227 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 31456 event pairs, 488 based on Foata normal form. 411/4301 useless extension candidates. Maximal degree in co-relation 19937. Up to 2181 conditions per place. [2024-06-28 02:01:41,125 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 54 selfloop transitions, 18 changer transitions 0/193 dead transitions. [2024-06-28 02:01:41,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 193 transitions, 2409 flow [2024-06-28 02:01:41,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:01:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:01:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-06-28 02:01:41,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 02:01:41,126 INFO L175 Difference]: Start difference. First operand has 151 places, 191 transitions, 2277 flow. Second operand 3 states and 96 transitions. [2024-06-28 02:01:41,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 193 transitions, 2409 flow [2024-06-28 02:01:41,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 193 transitions, 2333 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 02:01:41,219 INFO L231 Difference]: Finished difference. Result has 149 places, 181 transitions, 2131 flow [2024-06-28 02:01:41,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2131, PETRI_PLACES=149, PETRI_TRANSITIONS=181} [2024-06-28 02:01:41,220 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-28 02:01:41,220 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 181 transitions, 2131 flow [2024-06-28 02:01:41,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:41,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:41,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:01:41,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:01:41,220 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:41,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:41,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1401867422, now seen corresponding path program 1 times [2024-06-28 02:01:41,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:41,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302038821] [2024-06-28 02:01:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:41,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:42,963 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 02:01:42,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:42,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302038821] [2024-06-28 02:01:42,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302038821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:42,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:42,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:01:42,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245642446] [2024-06-28 02:01:42,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:42,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:01:42,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:01:42,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:01:43,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:01:43,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 181 transitions, 2131 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:43,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:43,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:01:43,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:44,367 INFO L124 PetriNetUnfolderBase]: 4723/7660 cut-off events. [2024-06-28 02:01:44,367 INFO L125 PetriNetUnfolderBase]: For 103424/103473 co-relation queries the response was YES. [2024-06-28 02:01:44,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38501 conditions, 7660 events. 4723/7660 cut-off events. For 103424/103473 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49146 event pairs, 1623 based on Foata normal form. 48/7502 useless extension candidates. Maximal degree in co-relation 38431. Up to 6756 conditions per place. [2024-06-28 02:01:44,430 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 177 selfloop transitions, 12 changer transitions 0/209 dead transitions. [2024-06-28 02:01:44,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 209 transitions, 2684 flow [2024-06-28 02:01:44,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:01:44,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:01:44,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 02:01:44,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:01:44,431 INFO L175 Difference]: Start difference. First operand has 149 places, 181 transitions, 2131 flow. Second operand 5 states and 120 transitions. [2024-06-28 02:01:44,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 209 transitions, 2684 flow [2024-06-28 02:01:44,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 209 transitions, 2646 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:01:44,616 INFO L231 Difference]: Finished difference. Result has 153 places, 191 transitions, 2263 flow [2024-06-28 02:01:44,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2263, PETRI_PLACES=153, PETRI_TRANSITIONS=191} [2024-06-28 02:01:44,617 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-28 02:01:44,617 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 191 transitions, 2263 flow [2024-06-28 02:01:44,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:44,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:44,618 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 02:01:44,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:01:44,618 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:44,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1877042379, now seen corresponding path program 1 times [2024-06-28 02:01:44,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:44,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322612099] [2024-06-28 02:01:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:44,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:47,122 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 02:01:47,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:47,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322612099] [2024-06-28 02:01:47,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322612099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:47,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:47,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:47,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885741236] [2024-06-28 02:01:47,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:47,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:47,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:47,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:47,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:47,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:47,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 191 transitions, 2263 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:47,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:47,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:47,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:49,247 INFO L124 PetriNetUnfolderBase]: 5304/8020 cut-off events. [2024-06-28 02:01:49,247 INFO L125 PetriNetUnfolderBase]: For 115848/115856 co-relation queries the response was YES. [2024-06-28 02:01:49,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43152 conditions, 8020 events. 5304/8020 cut-off events. For 115848/115856 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 47346 event pairs, 686 based on Foata normal form. 26/7997 useless extension candidates. Maximal degree in co-relation 43079. Up to 5962 conditions per place. [2024-06-28 02:01:49,314 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 197 selfloop transitions, 73 changer transitions 7/285 dead transitions. [2024-06-28 02:01:49,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 285 transitions, 3263 flow [2024-06-28 02:01:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:49,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 251 transitions. [2024-06-28 02:01:49,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5810185185185185 [2024-06-28 02:01:49,316 INFO L175 Difference]: Start difference. First operand has 153 places, 191 transitions, 2263 flow. Second operand 9 states and 251 transitions. [2024-06-28 02:01:49,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 285 transitions, 3263 flow [2024-06-28 02:01:49,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 285 transitions, 3227 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 02:01:49,534 INFO L231 Difference]: Finished difference. Result has 160 places, 192 transitions, 2411 flow [2024-06-28 02:01:49,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2227, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2411, PETRI_PLACES=160, PETRI_TRANSITIONS=192} [2024-06-28 02:01:49,535 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 106 predicate places. [2024-06-28 02:01:49,535 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 192 transitions, 2411 flow [2024-06-28 02:01:49,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:49,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:49,535 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 02:01:49,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:01:49,536 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:49,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:49,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2063395425, now seen corresponding path program 2 times [2024-06-28 02:01:49,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:49,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137169631] [2024-06-28 02:01:49,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:49,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:01:52,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:52,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137169631] [2024-06-28 02:01:52,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137169631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:52,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:52,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:01:52,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143857204] [2024-06-28 02:01:52,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:52,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:01:52,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:52,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:01:52,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:01:52,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:52,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 192 transitions, 2411 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:52,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:52,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:52,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:54,089 INFO L124 PetriNetUnfolderBase]: 4731/7197 cut-off events. [2024-06-28 02:01:54,089 INFO L125 PetriNetUnfolderBase]: For 110621/110629 co-relation queries the response was YES. [2024-06-28 02:01:54,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39666 conditions, 7197 events. 4731/7197 cut-off events. For 110621/110629 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 41966 event pairs, 908 based on Foata normal form. 32/7180 useless extension candidates. Maximal degree in co-relation 39591. Up to 6013 conditions per place. [2024-06-28 02:01:54,153 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 198 selfloop transitions, 68 changer transitions 0/274 dead transitions. [2024-06-28 02:01:54,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 274 transitions, 3246 flow [2024-06-28 02:01:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:01:54,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:01:54,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 02:01:54,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-06-28 02:01:54,155 INFO L175 Difference]: Start difference. First operand has 160 places, 192 transitions, 2411 flow. Second operand 9 states and 238 transitions. [2024-06-28 02:01:54,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 274 transitions, 3246 flow [2024-06-28 02:01:54,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 274 transitions, 3114 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:01:54,392 INFO L231 Difference]: Finished difference. Result has 162 places, 193 transitions, 2452 flow [2024-06-28 02:01:54,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2452, PETRI_PLACES=162, PETRI_TRANSITIONS=193} [2024-06-28 02:01:54,393 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 108 predicate places. [2024-06-28 02:01:54,394 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 193 transitions, 2452 flow [2024-06-28 02:01:54,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:54,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:01:54,394 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 02:01:54,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:01:54,395 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:01:54,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:01:54,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1510630845, now seen corresponding path program 3 times [2024-06-28 02:01:54,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:01:54,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377132595] [2024-06-28 02:01:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:01:54,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:01:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:01:57,541 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 02:01:57,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:01:57,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377132595] [2024-06-28 02:01:57,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377132595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:01:57,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:01:57,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:01:57,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159692341] [2024-06-28 02:01:57,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:01:57,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:01:57,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:01:57,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:01:57,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:01:57,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:01:57,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 193 transitions, 2452 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:01:57,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:01:57,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:01:57,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:01:59,953 INFO L124 PetriNetUnfolderBase]: 4907/7460 cut-off events. [2024-06-28 02:01:59,953 INFO L125 PetriNetUnfolderBase]: For 116715/116717 co-relation queries the response was YES. [2024-06-28 02:01:59,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41157 conditions, 7460 events. 4907/7460 cut-off events. For 116715/116717 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 43716 event pairs, 940 based on Foata normal form. 16/7424 useless extension candidates. Maximal degree in co-relation 41081. Up to 6359 conditions per place. [2024-06-28 02:02:00,145 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 199 selfloop transitions, 65 changer transitions 0/272 dead transitions. [2024-06-28 02:02:00,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 272 transitions, 3276 flow [2024-06-28 02:02:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:02:00,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:02:00,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 02:02:00,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 02:02:00,147 INFO L175 Difference]: Start difference. First operand has 162 places, 193 transitions, 2452 flow. Second operand 9 states and 234 transitions. [2024-06-28 02:02:00,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 272 transitions, 3276 flow [2024-06-28 02:02:00,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 272 transitions, 3144 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 02:02:00,372 INFO L231 Difference]: Finished difference. Result has 164 places, 194 transitions, 2485 flow [2024-06-28 02:02:00,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2485, PETRI_PLACES=164, PETRI_TRANSITIONS=194} [2024-06-28 02:02:00,373 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 110 predicate places. [2024-06-28 02:02:00,373 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 194 transitions, 2485 flow [2024-06-28 02:02:00,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:00,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:00,374 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 02:02:00,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:02:00,374 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:00,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:00,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1785549651, now seen corresponding path program 4 times [2024-06-28 02:02:00,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:00,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385457941] [2024-06-28 02:02:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:00,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:03,168 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 02:02:03,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:03,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385457941] [2024-06-28 02:02:03,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385457941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:03,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:03,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:02:03,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352812923] [2024-06-28 02:02:03,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:03,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:02:03,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:03,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:02:03,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:02:03,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:02:03,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 194 transitions, 2485 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:03,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:03,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:02:03,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:05,564 INFO L124 PetriNetUnfolderBase]: 5033/7658 cut-off events. [2024-06-28 02:02:05,564 INFO L125 PetriNetUnfolderBase]: For 124595/124597 co-relation queries the response was YES. [2024-06-28 02:02:05,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42501 conditions, 7658 events. 5033/7658 cut-off events. For 124595/124597 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 45128 event pairs, 928 based on Foata normal form. 12/7618 useless extension candidates. Maximal degree in co-relation 42424. Up to 6337 conditions per place. [2024-06-28 02:02:05,623 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 211 selfloop transitions, 68 changer transitions 0/287 dead transitions. [2024-06-28 02:02:05,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 287 transitions, 3393 flow [2024-06-28 02:02:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:02:05,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:02:05,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-28 02:02:05,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-06-28 02:02:05,625 INFO L175 Difference]: Start difference. First operand has 164 places, 194 transitions, 2485 flow. Second operand 10 states and 261 transitions. [2024-06-28 02:02:05,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 287 transitions, 3393 flow [2024-06-28 02:02:05,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 287 transitions, 3252 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 02:02:05,884 INFO L231 Difference]: Finished difference. Result has 167 places, 195 transitions, 2516 flow [2024-06-28 02:02:05,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2516, PETRI_PLACES=167, PETRI_TRANSITIONS=195} [2024-06-28 02:02:05,884 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 113 predicate places. [2024-06-28 02:02:05,884 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 195 transitions, 2516 flow [2024-06-28 02:02:05,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:05,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:05,885 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 02:02:05,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:02:05,885 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:05,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:05,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1515993225, now seen corresponding path program 5 times [2024-06-28 02:02:05,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:05,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569735153] [2024-06-28 02:02:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:05,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:08,488 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 02:02:08,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:08,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569735153] [2024-06-28 02:02:08,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569735153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:08,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:08,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:08,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545586548] [2024-06-28 02:02:08,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:08,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:08,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:08,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:08,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:08,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:02:08,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 195 transitions, 2516 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:08,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:08,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:02:08,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:10,715 INFO L124 PetriNetUnfolderBase]: 5561/8506 cut-off events. [2024-06-28 02:02:10,716 INFO L125 PetriNetUnfolderBase]: For 146237/146264 co-relation queries the response was YES. [2024-06-28 02:02:10,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48168 conditions, 8506 events. 5561/8506 cut-off events. For 146237/146264 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 51277 event pairs, 1093 based on Foata normal form. 22/8458 useless extension candidates. Maximal degree in co-relation 48090. Up to 7083 conditions per place. [2024-06-28 02:02:10,796 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 203 selfloop transitions, 90 changer transitions 0/301 dead transitions. [2024-06-28 02:02:10,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 301 transitions, 4050 flow [2024-06-28 02:02:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:02:10,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:02:10,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 02:02:10,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-28 02:02:10,798 INFO L175 Difference]: Start difference. First operand has 167 places, 195 transitions, 2516 flow. Second operand 9 states and 223 transitions. [2024-06-28 02:02:10,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 301 transitions, 4050 flow [2024-06-28 02:02:11,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 301 transitions, 3828 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 02:02:11,157 INFO L231 Difference]: Finished difference. Result has 172 places, 229 transitions, 3203 flow [2024-06-28 02:02:11,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3203, PETRI_PLACES=172, PETRI_TRANSITIONS=229} [2024-06-28 02:02:11,158 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 118 predicate places. [2024-06-28 02:02:11,158 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 229 transitions, 3203 flow [2024-06-28 02:02:11,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:11,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:11,158 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 02:02:11,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:02:11,158 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:11,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:11,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2098901631, now seen corresponding path program 6 times [2024-06-28 02:02:11,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:11,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212005688] [2024-06-28 02:02:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:11,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:13,316 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 02:02:13,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:13,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212005688] [2024-06-28 02:02:13,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212005688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:13,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:13,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:13,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591321960] [2024-06-28 02:02:13,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:13,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:13,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:13,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:13,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:13,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:02:13,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 229 transitions, 3203 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:13,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:13,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:02:13,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:15,767 INFO L124 PetriNetUnfolderBase]: 6352/9780 cut-off events. [2024-06-28 02:02:15,767 INFO L125 PetriNetUnfolderBase]: For 174269/174275 co-relation queries the response was YES. [2024-06-28 02:02:15,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57151 conditions, 9780 events. 6352/9780 cut-off events. For 174269/174275 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 61477 event pairs, 1117 based on Foata normal form. 22/9728 useless extension candidates. Maximal degree in co-relation 57068. Up to 7775 conditions per place. [2024-06-28 02:02:15,857 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 212 selfloop transitions, 143 changer transitions 0/363 dead transitions. [2024-06-28 02:02:15,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 363 transitions, 5100 flow [2024-06-28 02:02:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:02:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:02:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 02:02:15,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532407407407407 [2024-06-28 02:02:15,861 INFO L175 Difference]: Start difference. First operand has 172 places, 229 transitions, 3203 flow. Second operand 9 states and 239 transitions. [2024-06-28 02:02:15,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 363 transitions, 5100 flow [2024-06-28 02:02:16,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 363 transitions, 4951 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 02:02:16,345 INFO L231 Difference]: Finished difference. Result has 182 places, 283 transitions, 4382 flow [2024-06-28 02:02:16,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3112, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4382, PETRI_PLACES=182, PETRI_TRANSITIONS=283} [2024-06-28 02:02:16,346 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 128 predicate places. [2024-06-28 02:02:16,346 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 283 transitions, 4382 flow [2024-06-28 02:02:16,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:16,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:16,346 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 02:02:16,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:02:16,347 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:16,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:16,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1070869271, now seen corresponding path program 1 times [2024-06-28 02:02:16,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:16,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491261746] [2024-06-28 02:02:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:16,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:18,638 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 02:02:18,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:18,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491261746] [2024-06-28 02:02:18,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491261746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:18,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:18,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:18,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040391115] [2024-06-28 02:02:18,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:18,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:18,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:18,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:18,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:18,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:02:18,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 283 transitions, 4382 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:18,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:18,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:02:18,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:21,111 INFO L124 PetriNetUnfolderBase]: 7054/10882 cut-off events. [2024-06-28 02:02:21,111 INFO L125 PetriNetUnfolderBase]: For 200715/200721 co-relation queries the response was YES. [2024-06-28 02:02:21,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64545 conditions, 10882 events. 7054/10882 cut-off events. For 200715/200721 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 70042 event pairs, 1177 based on Foata normal form. 18/10826 useless extension candidates. Maximal degree in co-relation 64457. Up to 7865 conditions per place. [2024-06-28 02:02:21,228 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 218 selfloop transitions, 147 changer transitions 0/373 dead transitions. [2024-06-28 02:02:21,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 373 transitions, 5647 flow [2024-06-28 02:02:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:02:21,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:02:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-28 02:02:21,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-06-28 02:02:21,230 INFO L175 Difference]: Start difference. First operand has 182 places, 283 transitions, 4382 flow. Second operand 9 states and 242 transitions. [2024-06-28 02:02:21,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 373 transitions, 5647 flow [2024-06-28 02:02:21,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 373 transitions, 5407 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:02:21,765 INFO L231 Difference]: Finished difference. Result has 187 places, 289 transitions, 4599 flow [2024-06-28 02:02:21,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4144, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4599, PETRI_PLACES=187, PETRI_TRANSITIONS=289} [2024-06-28 02:02:21,766 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-28 02:02:21,766 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 289 transitions, 4599 flow [2024-06-28 02:02:21,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:21,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:21,766 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 02:02:21,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:02:21,767 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:21,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:21,767 INFO L85 PathProgramCache]: Analyzing trace with hash -349379895, now seen corresponding path program 2 times [2024-06-28 02:02:21,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:21,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991899826] [2024-06-28 02:02:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:21,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:24,093 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 02:02:24,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:24,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991899826] [2024-06-28 02:02:24,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991899826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:24,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:24,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:24,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016078965] [2024-06-28 02:02:24,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:24,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:24,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:24,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:24,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:24,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:02:24,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 289 transitions, 4599 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:24,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:24,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:02:24,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:26,861 INFO L124 PetriNetUnfolderBase]: 7384/11444 cut-off events. [2024-06-28 02:02:26,861 INFO L125 PetriNetUnfolderBase]: For 234499/234505 co-relation queries the response was YES. [2024-06-28 02:02:26,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69088 conditions, 11444 events. 7384/11444 cut-off events. For 234499/234505 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 74530 event pairs, 1246 based on Foata normal form. 16/11391 useless extension candidates. Maximal degree in co-relation 68998. Up to 7105 conditions per place. [2024-06-28 02:02:26,974 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 201 selfloop transitions, 154 changer transitions 0/363 dead transitions. [2024-06-28 02:02:26,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 363 transitions, 5789 flow [2024-06-28 02:02:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:26,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 02:02:26,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-28 02:02:26,976 INFO L175 Difference]: Start difference. First operand has 187 places, 289 transitions, 4599 flow. Second operand 8 states and 213 transitions. [2024-06-28 02:02:26,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 363 transitions, 5789 flow [2024-06-28 02:02:27,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 363 transitions, 5659 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 02:02:27,586 INFO L231 Difference]: Finished difference. Result has 192 places, 291 transitions, 4861 flow [2024-06-28 02:02:27,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4471, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4861, PETRI_PLACES=192, PETRI_TRANSITIONS=291} [2024-06-28 02:02:27,587 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 138 predicate places. [2024-06-28 02:02:27,587 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 291 transitions, 4861 flow [2024-06-28 02:02:27,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:27,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:27,587 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 02:02:27,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:02:27,587 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:27,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:27,588 INFO L85 PathProgramCache]: Analyzing trace with hash -19471417, now seen corresponding path program 7 times [2024-06-28 02:02:27,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:27,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246063311] [2024-06-28 02:02:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:27,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:30,131 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 02:02:30,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:30,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246063311] [2024-06-28 02:02:30,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246063311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:30,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:30,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:02:30,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668700467] [2024-06-28 02:02:30,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:30,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:02:30,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:30,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:02:30,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:02:30,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:02:30,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 291 transitions, 4861 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:30,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:30,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:02:30,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:33,115 INFO L124 PetriNetUnfolderBase]: 7338/11314 cut-off events. [2024-06-28 02:02:33,115 INFO L125 PetriNetUnfolderBase]: For 236370/236383 co-relation queries the response was YES. [2024-06-28 02:02:33,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69364 conditions, 11314 events. 7338/11314 cut-off events. For 236370/236383 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 72425 event pairs, 1393 based on Foata normal form. 28/11225 useless extension candidates. Maximal degree in co-relation 69271. Up to 9277 conditions per place. [2024-06-28 02:02:33,234 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 216 selfloop transitions, 146 changer transitions 0/370 dead transitions. [2024-06-28 02:02:33,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 370 transitions, 5925 flow [2024-06-28 02:02:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:02:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:02:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 02:02:33,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-28 02:02:33,235 INFO L175 Difference]: Start difference. First operand has 192 places, 291 transitions, 4861 flow. Second operand 9 states and 229 transitions. [2024-06-28 02:02:33,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 370 transitions, 5925 flow [2024-06-28 02:02:34,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 370 transitions, 5708 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 02:02:34,122 INFO L231 Difference]: Finished difference. Result has 196 places, 291 transitions, 4948 flow [2024-06-28 02:02:34,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4948, PETRI_PLACES=196, PETRI_TRANSITIONS=291} [2024-06-28 02:02:34,122 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 142 predicate places. [2024-06-28 02:02:34,122 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 291 transitions, 4948 flow [2024-06-28 02:02:34,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:34,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:34,123 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 02:02:34,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:02:34,123 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:34,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:34,123 INFO L85 PathProgramCache]: Analyzing trace with hash 195855187, now seen corresponding path program 8 times [2024-06-28 02:02:34,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:34,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522518763] [2024-06-28 02:02:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:34,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:36,666 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 02:02:36,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:36,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522518763] [2024-06-28 02:02:36,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522518763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:36,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:36,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:02:36,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173473666] [2024-06-28 02:02:36,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:36,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:02:36,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:36,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:02:36,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:02:36,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:02:36,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 291 transitions, 4948 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:36,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:36,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:02:36,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:39,910 INFO L124 PetriNetUnfolderBase]: 7464/11493 cut-off events. [2024-06-28 02:02:39,911 INFO L125 PetriNetUnfolderBase]: For 219370/219383 co-relation queries the response was YES. [2024-06-28 02:02:39,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70778 conditions, 11493 events. 7464/11493 cut-off events. For 219370/219383 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 73854 event pairs, 1367 based on Foata normal form. 16/11401 useless extension candidates. Maximal degree in co-relation 70684. Up to 9245 conditions per place. [2024-06-28 02:02:40,036 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 228 selfloop transitions, 149 changer transitions 0/385 dead transitions. [2024-06-28 02:02:40,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 385 transitions, 6134 flow [2024-06-28 02:02:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:02:40,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:02:40,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-28 02:02:40,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 02:02:40,038 INFO L175 Difference]: Start difference. First operand has 196 places, 291 transitions, 4948 flow. Second operand 10 states and 256 transitions. [2024-06-28 02:02:40,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 385 transitions, 6134 flow [2024-06-28 02:02:40,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 385 transitions, 5928 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:02:40,725 INFO L231 Difference]: Finished difference. Result has 200 places, 292 transitions, 5084 flow [2024-06-28 02:02:40,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4742, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5084, PETRI_PLACES=200, PETRI_TRANSITIONS=292} [2024-06-28 02:02:40,725 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 146 predicate places. [2024-06-28 02:02:40,725 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 292 transitions, 5084 flow [2024-06-28 02:02:40,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:40,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:40,726 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 02:02:40,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:02:40,726 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:40,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:40,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1008377957, now seen corresponding path program 9 times [2024-06-28 02:02:40,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:40,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175138339] [2024-06-28 02:02:40,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:40,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:43,226 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 02:02:43,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:43,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175138339] [2024-06-28 02:02:43,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175138339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:43,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:43,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:43,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797288917] [2024-06-28 02:02:43,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:43,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:43,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:43,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:43,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:43,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:02:43,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 292 transitions, 5084 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:43,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:43,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:02:43,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:46,065 INFO L124 PetriNetUnfolderBase]: 7582/11783 cut-off events. [2024-06-28 02:02:46,065 INFO L125 PetriNetUnfolderBase]: For 236839/236894 co-relation queries the response was YES. [2024-06-28 02:02:46,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71865 conditions, 11783 events. 7582/11783 cut-off events. For 236839/236894 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 77155 event pairs, 1411 based on Foata normal form. 36/11725 useless extension candidates. Maximal degree in co-relation 71769. Up to 9853 conditions per place. [2024-06-28 02:02:46,183 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 215 selfloop transitions, 137 changer transitions 0/360 dead transitions. [2024-06-28 02:02:46,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 360 transitions, 6112 flow [2024-06-28 02:02:46,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 02:02:46,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 02:02:46,184 INFO L175 Difference]: Start difference. First operand has 200 places, 292 transitions, 5084 flow. Second operand 8 states and 204 transitions. [2024-06-28 02:02:46,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 360 transitions, 6112 flow [2024-06-28 02:02:46,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 360 transitions, 5790 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 02:02:46,909 INFO L231 Difference]: Finished difference. Result has 200 places, 293 transitions, 5085 flow [2024-06-28 02:02:46,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4762, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5085, PETRI_PLACES=200, PETRI_TRANSITIONS=293} [2024-06-28 02:02:46,909 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 146 predicate places. [2024-06-28 02:02:46,910 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 293 transitions, 5085 flow [2024-06-28 02:02:46,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:46,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:46,910 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 02:02:46,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:02:46,910 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:46,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:46,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1919201891, now seen corresponding path program 3 times [2024-06-28 02:02:46,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:46,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338589] [2024-06-28 02:02:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:46,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:49,066 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 02:02:49,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:49,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338589] [2024-06-28 02:02:49,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:49,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:49,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:49,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784036343] [2024-06-28 02:02:49,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:49,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:49,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:49,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:49,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:02:49,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 293 transitions, 5085 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:49,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:49,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:02:49,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:52,030 INFO L124 PetriNetUnfolderBase]: 7708/11994 cut-off events. [2024-06-28 02:02:52,030 INFO L125 PetriNetUnfolderBase]: For 241847/241902 co-relation queries the response was YES. [2024-06-28 02:02:52,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72720 conditions, 11994 events. 7708/11994 cut-off events. For 241847/241902 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 78803 event pairs, 1421 based on Foata normal form. 32/11932 useless extension candidates. Maximal degree in co-relation 72623. Up to 9821 conditions per place. [2024-06-28 02:02:52,141 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 216 selfloop transitions, 139 changer transitions 0/363 dead transitions. [2024-06-28 02:02:52,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 363 transitions, 6121 flow [2024-06-28 02:02:52,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:02:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:02:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 02:02:52,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-06-28 02:02:52,143 INFO L175 Difference]: Start difference. First operand has 200 places, 293 transitions, 5085 flow. Second operand 8 states and 207 transitions. [2024-06-28 02:02:52,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 363 transitions, 6121 flow [2024-06-28 02:02:52,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 363 transitions, 5833 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:02:52,907 INFO L231 Difference]: Finished difference. Result has 203 places, 294 transitions, 5123 flow [2024-06-28 02:02:52,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4797, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5123, PETRI_PLACES=203, PETRI_TRANSITIONS=294} [2024-06-28 02:02:52,908 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 149 predicate places. [2024-06-28 02:02:52,908 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 294 transitions, 5123 flow [2024-06-28 02:02:52,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:52,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:52,909 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 02:02:52,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:02:52,909 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:52,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:52,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2110068125, now seen corresponding path program 4 times [2024-06-28 02:02:52,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:52,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748913508] [2024-06-28 02:02:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:52,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:02:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:02:55,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:02:55,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748913508] [2024-06-28 02:02:55,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748913508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:02:55,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:02:55,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:02:55,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457495068] [2024-06-28 02:02:55,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:02:55,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:02:55,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:02:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:02:55,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:02:55,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:02:55,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 294 transitions, 5123 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:55,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:02:55,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:02:55,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:02:58,193 INFO L124 PetriNetUnfolderBase]: 7688/11949 cut-off events. [2024-06-28 02:02:58,194 INFO L125 PetriNetUnfolderBase]: For 231556/231617 co-relation queries the response was YES. [2024-06-28 02:02:58,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71597 conditions, 11949 events. 7688/11949 cut-off events. For 231556/231617 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 78270 event pairs, 1243 based on Foata normal form. 35/11896 useless extension candidates. Maximal degree in co-relation 71499. Up to 6879 conditions per place. [2024-06-28 02:02:58,331 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 197 selfloop transitions, 158 changer transitions 0/363 dead transitions. [2024-06-28 02:02:58,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 363 transitions, 6051 flow [2024-06-28 02:02:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:02:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:02:58,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 02:02:58,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-28 02:02:58,333 INFO L175 Difference]: Start difference. First operand has 203 places, 294 transitions, 5123 flow. Second operand 9 states and 220 transitions. [2024-06-28 02:02:58,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 363 transitions, 6051 flow [2024-06-28 02:02:59,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 363 transitions, 5743 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 02:02:59,134 INFO L231 Difference]: Finished difference. Result has 205 places, 293 transitions, 5061 flow [2024-06-28 02:02:59,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4741, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5061, PETRI_PLACES=205, PETRI_TRANSITIONS=293} [2024-06-28 02:02:59,135 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-28 02:02:59,135 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 293 transitions, 5061 flow [2024-06-28 02:02:59,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:02:59,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:02:59,135 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 02:02:59,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:02:59,135 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:02:59,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:02:59,136 INFO L85 PathProgramCache]: Analyzing trace with hash 508059363, now seen corresponding path program 1 times [2024-06-28 02:02:59,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:02:59,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642769727] [2024-06-28 02:02:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:02:59,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:02:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:00,612 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 02:03:00,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:00,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642769727] [2024-06-28 02:03:00,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642769727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:00,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:00,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:03:00,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257915953] [2024-06-28 02:03:00,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:00,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:03:00,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:00,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:03:00,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:03:00,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:03:00,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 293 transitions, 5061 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 02:03:00,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:00,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:03:00,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:03,259 INFO L124 PetriNetUnfolderBase]: 7706/12567 cut-off events. [2024-06-28 02:03:03,259 INFO L125 PetriNetUnfolderBase]: For 238573/238575 co-relation queries the response was YES. [2024-06-28 02:03:03,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72601 conditions, 12567 events. 7706/12567 cut-off events. For 238573/238575 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 88402 event pairs, 3304 based on Foata normal form. 1/12255 useless extension candidates. Maximal degree in co-relation 72502. Up to 11204 conditions per place. [2024-06-28 02:03:03,389 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 291 selfloop transitions, 34 changer transitions 0/333 dead transitions. [2024-06-28 02:03:03,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 333 transitions, 6119 flow [2024-06-28 02:03:03,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:03,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 02:03:03,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 02:03:03,392 INFO L175 Difference]: Start difference. First operand has 205 places, 293 transitions, 5061 flow. Second operand 6 states and 143 transitions. [2024-06-28 02:03:03,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 333 transitions, 6119 flow [2024-06-28 02:03:04,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 333 transitions, 5646 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 02:03:04,015 INFO L231 Difference]: Finished difference. Result has 204 places, 305 transitions, 4865 flow [2024-06-28 02:03:04,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4588, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4865, PETRI_PLACES=204, PETRI_TRANSITIONS=305} [2024-06-28 02:03:04,016 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-28 02:03:04,016 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 305 transitions, 4865 flow [2024-06-28 02:03:04,017 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 02:03:04,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:04,017 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 02:03:04,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:03:04,017 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:04,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash 979836259, now seen corresponding path program 2 times [2024-06-28 02:03:04,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:04,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498956644] [2024-06-28 02:03:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:04,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:05,578 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 02:03:05,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:05,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498956644] [2024-06-28 02:03:05,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498956644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:05,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:05,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:03:05,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028734102] [2024-06-28 02:03:05,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:05,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:03:05,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:05,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:03:05,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:03:05,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:03:05,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 305 transitions, 4865 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 02:03:05,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:05,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:03:05,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:08,000 INFO L124 PetriNetUnfolderBase]: 7724/12604 cut-off events. [2024-06-28 02:03:08,000 INFO L125 PetriNetUnfolderBase]: For 224203/224205 co-relation queries the response was YES. [2024-06-28 02:03:08,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69801 conditions, 12604 events. 7724/12604 cut-off events. For 224203/224205 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 88649 event pairs, 3295 based on Foata normal form. 1/12294 useless extension candidates. Maximal degree in co-relation 69702. Up to 11253 conditions per place. [2024-06-28 02:03:08,152 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 300 selfloop transitions, 31 changer transitions 0/339 dead transitions. [2024-06-28 02:03:08,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 339 transitions, 5761 flow [2024-06-28 02:03:08,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 02:03:08,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-28 02:03:08,154 INFO L175 Difference]: Start difference. First operand has 204 places, 305 transitions, 4865 flow. Second operand 6 states and 146 transitions. [2024-06-28 02:03:08,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 339 transitions, 5761 flow [2024-06-28 02:03:08,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 339 transitions, 5653 flow, removed 53 selfloop flow, removed 1 redundant places. [2024-06-28 02:03:08,811 INFO L231 Difference]: Finished difference. Result has 210 places, 309 transitions, 4911 flow [2024-06-28 02:03:08,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4763, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4911, PETRI_PLACES=210, PETRI_TRANSITIONS=309} [2024-06-28 02:03:08,812 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-28 02:03:08,812 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 309 transitions, 4911 flow [2024-06-28 02:03:08,812 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 02:03:08,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:08,812 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 02:03:08,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:03:08,812 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:08,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:08,813 INFO L85 PathProgramCache]: Analyzing trace with hash 979845187, now seen corresponding path program 1 times [2024-06-28 02:03:08,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:08,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089345321] [2024-06-28 02:03:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:08,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:10,868 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 02:03:10,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:10,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089345321] [2024-06-28 02:03:10,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089345321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:10,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:10,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:10,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910707776] [2024-06-28 02:03:10,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:10,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:10,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:10,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:10,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:10,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:03:10,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 309 transitions, 4911 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 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 02:03:10,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:10,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:03:10,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:13,176 INFO L124 PetriNetUnfolderBase]: 7234/11825 cut-off events. [2024-06-28 02:03:13,177 INFO L125 PetriNetUnfolderBase]: For 226728/226928 co-relation queries the response was YES. [2024-06-28 02:03:13,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66085 conditions, 11825 events. 7234/11825 cut-off events. For 226728/226928 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 83708 event pairs, 3103 based on Foata normal form. 173/11646 useless extension candidates. Maximal degree in co-relation 65982. Up to 10516 conditions per place. [2024-06-28 02:03:13,291 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 288 selfloop transitions, 27 changer transitions 0/338 dead transitions. [2024-06-28 02:03:13,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 338 transitions, 5693 flow [2024-06-28 02:03:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:13,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 02:03:13,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 02:03:13,293 INFO L175 Difference]: Start difference. First operand has 210 places, 309 transitions, 4911 flow. Second operand 6 states and 140 transitions. [2024-06-28 02:03:13,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 338 transitions, 5693 flow [2024-06-28 02:03:13,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 338 transitions, 5633 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 02:03:13,791 INFO L231 Difference]: Finished difference. Result has 213 places, 317 transitions, 5019 flow [2024-06-28 02:03:13,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4851, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5019, PETRI_PLACES=213, PETRI_TRANSITIONS=317} [2024-06-28 02:03:13,792 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 159 predicate places. [2024-06-28 02:03:13,792 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 317 transitions, 5019 flow [2024-06-28 02:03:13,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 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 02:03:13,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:13,792 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 02:03:13,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:03:13,792 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:13,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:13,793 INFO L85 PathProgramCache]: Analyzing trace with hash 876545547, now seen corresponding path program 1 times [2024-06-28 02:03:13,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:13,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099110477] [2024-06-28 02:03:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:13,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:15,899 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 02:03:15,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:15,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099110477] [2024-06-28 02:03:15,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099110477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:15,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:15,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:15,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726348843] [2024-06-28 02:03:15,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:15,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:15,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:15,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:15,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:15,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:03:15,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 317 transitions, 5019 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 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 02:03:15,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:15,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:03:15,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:18,573 INFO L124 PetriNetUnfolderBase]: 7339/11974 cut-off events. [2024-06-28 02:03:18,573 INFO L125 PetriNetUnfolderBase]: For 226450/226619 co-relation queries the response was YES. [2024-06-28 02:03:18,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68183 conditions, 11974 events. 7339/11974 cut-off events. For 226450/226619 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 84346 event pairs, 2079 based on Foata normal form. 143/11764 useless extension candidates. Maximal degree in co-relation 68078. Up to 10468 conditions per place. [2024-06-28 02:03:18,717 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 324 selfloop transitions, 55 changer transitions 0/402 dead transitions. [2024-06-28 02:03:18,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 402 transitions, 6621 flow [2024-06-28 02:03:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:03:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:03:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:03:18,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 02:03:18,719 INFO L175 Difference]: Start difference. First operand has 213 places, 317 transitions, 5019 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:03:18,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 402 transitions, 6621 flow [2024-06-28 02:03:19,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 402 transitions, 6543 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-28 02:03:19,380 INFO L231 Difference]: Finished difference. Result has 221 places, 359 transitions, 5815 flow [2024-06-28 02:03:19,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4941, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5815, PETRI_PLACES=221, PETRI_TRANSITIONS=359} [2024-06-28 02:03:19,380 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 167 predicate places. [2024-06-28 02:03:19,381 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 359 transitions, 5815 flow [2024-06-28 02:03:19,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 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 02:03:19,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:19,381 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 02:03:19,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:03:19,381 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:19,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:19,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1070473539, now seen corresponding path program 2 times [2024-06-28 02:03:19,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:19,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323749086] [2024-06-28 02:03:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:19,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:21,414 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 02:03:21,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:21,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323749086] [2024-06-28 02:03:21,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323749086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:21,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867350006] [2024-06-28 02:03:21,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:21,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:21,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:21,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:21,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:03:21,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 359 transitions, 5815 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 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 02:03:21,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:21,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:03:21,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:24,023 INFO L124 PetriNetUnfolderBase]: 7432/12112 cut-off events. [2024-06-28 02:03:24,023 INFO L125 PetriNetUnfolderBase]: For 237476/237656 co-relation queries the response was YES. [2024-06-28 02:03:24,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71149 conditions, 12112 events. 7432/12112 cut-off events. For 237476/237656 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 85350 event pairs, 2079 based on Foata normal form. 149/11905 useless extension candidates. Maximal degree in co-relation 71040. Up to 10541 conditions per place. [2024-06-28 02:03:24,187 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 320 selfloop transitions, 71 changer transitions 0/414 dead transitions. [2024-06-28 02:03:24,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 414 transitions, 7053 flow [2024-06-28 02:03:24,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:24,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:03:24,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:03:24,188 INFO L175 Difference]: Start difference. First operand has 221 places, 359 transitions, 5815 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:03:24,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 414 transitions, 7053 flow [2024-06-28 02:03:24,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 414 transitions, 6941 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-06-28 02:03:24,793 INFO L231 Difference]: Finished difference. Result has 227 places, 379 transitions, 6215 flow [2024-06-28 02:03:24,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5727, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6215, PETRI_PLACES=227, PETRI_TRANSITIONS=379} [2024-06-28 02:03:24,793 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 173 predicate places. [2024-06-28 02:03:24,793 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 379 transitions, 6215 flow [2024-06-28 02:03:24,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 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 02:03:24,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:24,794 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 02:03:24,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:03:24,794 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:24,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:24,794 INFO L85 PathProgramCache]: Analyzing trace with hash 309970273, now seen corresponding path program 3 times [2024-06-28 02:03:24,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:24,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722620458] [2024-06-28 02:03:24,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:24,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:26,752 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 02:03:26,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:26,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722620458] [2024-06-28 02:03:26,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722620458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:26,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:26,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:26,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409032412] [2024-06-28 02:03:26,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:26,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:26,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:26,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:26,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:03:26,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 379 transitions, 6215 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 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 02:03:26,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:26,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:03:26,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:29,446 INFO L124 PetriNetUnfolderBase]: 7456/12163 cut-off events. [2024-06-28 02:03:29,447 INFO L125 PetriNetUnfolderBase]: For 247438/247618 co-relation queries the response was YES. [2024-06-28 02:03:29,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72900 conditions, 12163 events. 7456/12163 cut-off events. For 247438/247618 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 85822 event pairs, 2092 based on Foata normal form. 149/11954 useless extension candidates. Maximal degree in co-relation 72788. Up to 10547 conditions per place. [2024-06-28 02:03:29,577 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 321 selfloop transitions, 68 changer transitions 0/412 dead transitions. [2024-06-28 02:03:29,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 412 transitions, 7154 flow [2024-06-28 02:03:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:29,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 02:03:29,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 02:03:29,579 INFO L175 Difference]: Start difference. First operand has 227 places, 379 transitions, 6215 flow. Second operand 6 states and 148 transitions. [2024-06-28 02:03:29,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 412 transitions, 7154 flow [2024-06-28 02:03:30,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 412 transitions, 7049 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 02:03:30,209 INFO L231 Difference]: Finished difference. Result has 230 places, 382 transitions, 6314 flow [2024-06-28 02:03:30,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6116, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6314, PETRI_PLACES=230, PETRI_TRANSITIONS=382} [2024-06-28 02:03:30,210 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 176 predicate places. [2024-06-28 02:03:30,210 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 382 transitions, 6314 flow [2024-06-28 02:03:30,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 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 02:03:30,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:30,210 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 02:03:30,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:03:30,211 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:30,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:30,211 INFO L85 PathProgramCache]: Analyzing trace with hash 310415743, now seen corresponding path program 4 times [2024-06-28 02:03:30,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:30,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538854361] [2024-06-28 02:03:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:30,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:32,707 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 02:03:32,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:32,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538854361] [2024-06-28 02:03:32,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538854361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:32,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:32,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:32,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221247213] [2024-06-28 02:03:32,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:32,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:32,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:32,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:32,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:32,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:03:32,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 382 transitions, 6314 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 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 02:03:32,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:32,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:03:32,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:35,017 INFO L124 PetriNetUnfolderBase]: 7442/12140 cut-off events. [2024-06-28 02:03:35,017 INFO L125 PetriNetUnfolderBase]: For 256576/256794 co-relation queries the response was YES. [2024-06-28 02:03:35,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72724 conditions, 12140 events. 7442/12140 cut-off events. For 256576/256794 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 85776 event pairs, 3048 based on Foata normal form. 185/11965 useless extension candidates. Maximal degree in co-relation 72611. Up to 10764 conditions per place. [2024-06-28 02:03:35,173 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 372 selfloop transitions, 18 changer transitions 0/413 dead transitions. [2024-06-28 02:03:35,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 413 transitions, 7287 flow [2024-06-28 02:03:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 02:03:35,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:03:35,175 INFO L175 Difference]: Start difference. First operand has 230 places, 382 transitions, 6314 flow. Second operand 6 states and 141 transitions. [2024-06-28 02:03:35,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 413 transitions, 7287 flow [2024-06-28 02:03:35,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 413 transitions, 7151 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 02:03:35,805 INFO L231 Difference]: Finished difference. Result has 234 places, 388 transitions, 6320 flow [2024-06-28 02:03:35,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6188, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6320, PETRI_PLACES=234, PETRI_TRANSITIONS=388} [2024-06-28 02:03:35,806 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 180 predicate places. [2024-06-28 02:03:35,806 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 388 transitions, 6320 flow [2024-06-28 02:03:35,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 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 02:03:35,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:35,806 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 02:03:35,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:03:35,806 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:35,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:35,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1247669384, now seen corresponding path program 1 times [2024-06-28 02:03:35,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:35,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040872641] [2024-06-28 02:03:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:35,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:37,373 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 02:03:37,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:37,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040872641] [2024-06-28 02:03:37,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040872641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:37,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:37,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:03:37,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755295231] [2024-06-28 02:03:37,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:37,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:03:37,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:37,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:03:37,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:03:37,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:03:37,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 388 transitions, 6320 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:37,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:37,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:03:37,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:40,155 INFO L124 PetriNetUnfolderBase]: 7976/12990 cut-off events. [2024-06-28 02:03:40,155 INFO L125 PetriNetUnfolderBase]: For 258220/258230 co-relation queries the response was YES. [2024-06-28 02:03:40,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76813 conditions, 12990 events. 7976/12990 cut-off events. For 258220/258230 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 91220 event pairs, 3199 based on Foata normal form. 6/12677 useless extension candidates. Maximal degree in co-relation 76697. Up to 11558 conditions per place. [2024-06-28 02:03:40,330 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 373 selfloop transitions, 38 changer transitions 0/419 dead transitions. [2024-06-28 02:03:40,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 419 transitions, 7382 flow [2024-06-28 02:03:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 02:03:40,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 02:03:40,331 INFO L175 Difference]: Start difference. First operand has 234 places, 388 transitions, 6320 flow. Second operand 6 states and 142 transitions. [2024-06-28 02:03:40,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 419 transitions, 7382 flow [2024-06-28 02:03:41,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 419 transitions, 7330 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-28 02:03:41,044 INFO L231 Difference]: Finished difference. Result has 238 places, 392 transitions, 6413 flow [2024-06-28 02:03:41,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6268, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6413, PETRI_PLACES=238, PETRI_TRANSITIONS=392} [2024-06-28 02:03:41,045 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-28 02:03:41,045 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 392 transitions, 6413 flow [2024-06-28 02:03:41,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:41,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:41,045 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 02:03:41,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:03:41,045 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:41,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:41,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1382025370, now seen corresponding path program 2 times [2024-06-28 02:03:41,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:41,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222541784] [2024-06-28 02:03:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:41,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:42,778 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 02:03:42,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:42,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222541784] [2024-06-28 02:03:42,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222541784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:42,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:42,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:42,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208358396] [2024-06-28 02:03:42,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:42,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:42,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:42,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:42,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:03:42,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 392 transitions, 6413 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 02:03:42,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:42,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:03:42,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:45,816 INFO L124 PetriNetUnfolderBase]: 7973/12977 cut-off events. [2024-06-28 02:03:45,816 INFO L125 PetriNetUnfolderBase]: For 262235/262239 co-relation queries the response was YES. [2024-06-28 02:03:45,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76905 conditions, 12977 events. 7973/12977 cut-off events. For 262235/262239 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 91068 event pairs, 3198 based on Foata normal form. 2/12659 useless extension candidates. Maximal degree in co-relation 76787. Up to 11555 conditions per place. [2024-06-28 02:03:45,999 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 374 selfloop transitions, 42 changer transitions 0/424 dead transitions. [2024-06-28 02:03:45,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 424 transitions, 7443 flow [2024-06-28 02:03:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 02:03:46,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 02:03:46,001 INFO L175 Difference]: Start difference. First operand has 238 places, 392 transitions, 6413 flow. Second operand 7 states and 162 transitions. [2024-06-28 02:03:46,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 424 transitions, 7443 flow [2024-06-28 02:03:46,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 424 transitions, 7305 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 02:03:46,823 INFO L231 Difference]: Finished difference. Result has 241 places, 392 transitions, 6366 flow [2024-06-28 02:03:46,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6275, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6366, PETRI_PLACES=241, PETRI_TRANSITIONS=392} [2024-06-28 02:03:46,823 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 187 predicate places. [2024-06-28 02:03:46,823 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 392 transitions, 6366 flow [2024-06-28 02:03:46,823 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 02:03:46,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:46,824 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 02:03:46,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:03:46,824 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:46,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash -752425029, now seen corresponding path program 1 times [2024-06-28 02:03:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:46,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394115511] [2024-06-28 02:03:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:46,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:48,483 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 02:03:48,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:48,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394115511] [2024-06-28 02:03:48,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394115511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:48,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:48,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:48,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565744124] [2024-06-28 02:03:48,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:48,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:48,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:48,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:48,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:48,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:03:48,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 392 transitions, 6366 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 02:03:48,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:48,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:03:48,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:51,712 INFO L124 PetriNetUnfolderBase]: 7991/12985 cut-off events. [2024-06-28 02:03:51,712 INFO L125 PetriNetUnfolderBase]: For 267873/267877 co-relation queries the response was YES. [2024-06-28 02:03:51,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77128 conditions, 12985 events. 7991/12985 cut-off events. For 267873/267877 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 90846 event pairs, 3257 based on Foata normal form. 2/12667 useless extension candidates. Maximal degree in co-relation 77010. Up to 11586 conditions per place. [2024-06-28 02:03:51,853 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 406 selfloop transitions, 36 changer transitions 0/450 dead transitions. [2024-06-28 02:03:51,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 450 transitions, 7884 flow [2024-06-28 02:03:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 02:03:51,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-28 02:03:51,854 INFO L175 Difference]: Start difference. First operand has 241 places, 392 transitions, 6366 flow. Second operand 7 states and 159 transitions. [2024-06-28 02:03:51,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 450 transitions, 7884 flow [2024-06-28 02:03:52,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 450 transitions, 7666 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 02:03:52,638 INFO L231 Difference]: Finished difference. Result has 244 places, 420 transitions, 6729 flow [2024-06-28 02:03:52,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6228, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6729, PETRI_PLACES=244, PETRI_TRANSITIONS=420} [2024-06-28 02:03:52,639 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 190 predicate places. [2024-06-28 02:03:52,639 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 420 transitions, 6729 flow [2024-06-28 02:03:52,640 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 02:03:52,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:52,640 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 02:03:52,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:03:52,640 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:52,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:52,641 INFO L85 PathProgramCache]: Analyzing trace with hash 740277051, now seen corresponding path program 2 times [2024-06-28 02:03:52,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:52,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497688886] [2024-06-28 02:03:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:52,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:54,462 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 02:03:54,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:54,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497688886] [2024-06-28 02:03:54,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497688886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:54,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:54,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:54,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165243260] [2024-06-28 02:03:54,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:54,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:54,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:54,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:54,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:54,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:03:54,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 420 transitions, 6729 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 02:03:54,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:54,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:03:54,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:57,384 INFO L124 PetriNetUnfolderBase]: 8009/13018 cut-off events. [2024-06-28 02:03:57,384 INFO L125 PetriNetUnfolderBase]: For 277879/277883 co-relation queries the response was YES. [2024-06-28 02:03:57,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78825 conditions, 13018 events. 8009/13018 cut-off events. For 277879/277883 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 91038 event pairs, 3238 based on Foata normal form. 2/12703 useless extension candidates. Maximal degree in co-relation 78704. Up to 11637 conditions per place. [2024-06-28 02:03:57,548 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 425 selfloop transitions, 27 changer transitions 0/460 dead transitions. [2024-06-28 02:03:57,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 460 transitions, 7965 flow [2024-06-28 02:03:57,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:57,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 02:03:57,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 02:03:57,550 INFO L175 Difference]: Start difference. First operand has 244 places, 420 transitions, 6729 flow. Second operand 7 states and 163 transitions. [2024-06-28 02:03:57,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 460 transitions, 7965 flow [2024-06-28 02:03:58,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 460 transitions, 7889 flow, removed 37 selfloop flow, removed 1 redundant places. [2024-06-28 02:03:58,394 INFO L231 Difference]: Finished difference. Result has 251 places, 426 transitions, 6846 flow [2024-06-28 02:03:58,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6653, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6846, PETRI_PLACES=251, PETRI_TRANSITIONS=426} [2024-06-28 02:03:58,395 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 197 predicate places. [2024-06-28 02:03:58,395 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 426 transitions, 6846 flow [2024-06-28 02:03:58,395 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 02:03:58,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:58,396 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 02:03:58,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:03:58,396 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:58,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:58,396 INFO L85 PathProgramCache]: Analyzing trace with hash 740276834, now seen corresponding path program 3 times [2024-06-28 02:03:58,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:58,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493429741] [2024-06-28 02:03:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:58,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:59,862 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 02:03:59,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:59,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493429741] [2024-06-28 02:03:59,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493429741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:59,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:59,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:03:59,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522352278] [2024-06-28 02:03:59,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:59,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:03:59,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:59,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:03:59,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:03:59,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:03:59,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 426 transitions, 6846 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:59,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:59,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:03:59,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:02,704 INFO L124 PetriNetUnfolderBase]: 8006/13014 cut-off events. [2024-06-28 02:04:02,704 INFO L125 PetriNetUnfolderBase]: For 288107/288111 co-relation queries the response was YES. [2024-06-28 02:04:02,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79859 conditions, 13014 events. 8006/13014 cut-off events. For 288107/288111 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 91012 event pairs, 3239 based on Foata normal form. 2/12699 useless extension candidates. Maximal degree in co-relation 79734. Up to 11633 conditions per place. [2024-06-28 02:04:02,903 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 402 selfloop transitions, 43 changer transitions 0/453 dead transitions. [2024-06-28 02:04:02,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 453 transitions, 7822 flow [2024-06-28 02:04:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:04:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:04:02,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 02:04:02,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 02:04:02,905 INFO L175 Difference]: Start difference. First operand has 251 places, 426 transitions, 6846 flow. Second operand 6 states and 145 transitions. [2024-06-28 02:04:02,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 453 transitions, 7822 flow [2024-06-28 02:04:03,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 453 transitions, 7682 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:03,751 INFO L231 Difference]: Finished difference. Result has 253 places, 426 transitions, 6812 flow [2024-06-28 02:04:03,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6706, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6812, PETRI_PLACES=253, PETRI_TRANSITIONS=426} [2024-06-28 02:04:03,752 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 199 predicate places. [2024-06-28 02:04:03,752 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 426 transitions, 6812 flow [2024-06-28 02:04:03,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:03,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:03,753 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 02:04:03,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:04:03,753 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:03,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:03,754 INFO L85 PathProgramCache]: Analyzing trace with hash 310421695, now seen corresponding path program 3 times [2024-06-28 02:04:03,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:03,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948743437] [2024-06-28 02:04:03,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:03,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:05,644 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 02:04:05,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:05,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948743437] [2024-06-28 02:04:05,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948743437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:05,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:05,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:05,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985078696] [2024-06-28 02:04:05,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:05,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:05,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:05,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:05,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:05,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:04:05,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 426 transitions, 6812 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 02:04:05,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:05,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:04:05,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:08,445 INFO L124 PetriNetUnfolderBase]: 8027/13156 cut-off events. [2024-06-28 02:04:08,445 INFO L125 PetriNetUnfolderBase]: For 293385/293389 co-relation queries the response was YES. [2024-06-28 02:04:08,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80177 conditions, 13156 events. 8027/13156 cut-off events. For 293385/293389 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 92540 event pairs, 3234 based on Foata normal form. 2/12805 useless extension candidates. Maximal degree in co-relation 80051. Up to 11618 conditions per place. [2024-06-28 02:04:08,620 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 421 selfloop transitions, 36 changer transitions 0/465 dead transitions. [2024-06-28 02:04:08,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 465 transitions, 8101 flow [2024-06-28 02:04:08,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 02:04:08,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 02:04:08,622 INFO L175 Difference]: Start difference. First operand has 253 places, 426 transitions, 6812 flow. Second operand 7 states and 162 transitions. [2024-06-28 02:04:08,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 465 transitions, 8101 flow [2024-06-28 02:04:09,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 465 transitions, 8002 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:04:09,400 INFO L231 Difference]: Finished difference. Result has 255 places, 434 transitions, 6975 flow [2024-06-28 02:04:09,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6715, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6975, PETRI_PLACES=255, PETRI_TRANSITIONS=434} [2024-06-28 02:04:09,401 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 201 predicate places. [2024-06-28 02:04:09,401 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 434 transitions, 6975 flow [2024-06-28 02:04:09,401 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 02:04:09,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:09,401 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 02:04:09,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:04:09,401 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:09,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash 310431615, now seen corresponding path program 1 times [2024-06-28 02:04:09,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:09,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486936114] [2024-06-28 02:04:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:09,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:12,011 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 02:04:12,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:12,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486936114] [2024-06-28 02:04:12,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486936114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:12,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:12,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:04:12,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359318086] [2024-06-28 02:04:12,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:12,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:04:12,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:12,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:04:12,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:04:12,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:04:12,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 434 transitions, 6975 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:12,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:12,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:04:12,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:14,813 INFO L124 PetriNetUnfolderBase]: 7509/12339 cut-off events. [2024-06-28 02:04:14,814 INFO L125 PetriNetUnfolderBase]: For 306189/306407 co-relation queries the response was YES. [2024-06-28 02:04:14,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77580 conditions, 12339 events. 7509/12339 cut-off events. For 306189/306407 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 87514 event pairs, 3030 based on Foata normal form. 185/12129 useless extension candidates. Maximal degree in co-relation 77453. Up to 10844 conditions per place. [2024-06-28 02:04:14,962 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 426 selfloop transitions, 20 changer transitions 0/469 dead transitions. [2024-06-28 02:04:14,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 469 transitions, 8068 flow [2024-06-28 02:04:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:14,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 02:04:14,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 02:04:14,963 INFO L175 Difference]: Start difference. First operand has 255 places, 434 transitions, 6975 flow. Second operand 7 states and 160 transitions. [2024-06-28 02:04:14,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 469 transitions, 8068 flow [2024-06-28 02:04:15,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 469 transitions, 7942 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-28 02:04:15,806 INFO L231 Difference]: Finished difference. Result has 260 places, 441 transitions, 6998 flow [2024-06-28 02:04:15,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6849, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6998, PETRI_PLACES=260, PETRI_TRANSITIONS=441} [2024-06-28 02:04:15,807 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-28 02:04:15,807 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 441 transitions, 6998 flow [2024-06-28 02:04:15,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:15,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:15,807 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 02:04:15,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:04:15,807 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:15,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1707357180, now seen corresponding path program 1 times [2024-06-28 02:04:15,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:15,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419297106] [2024-06-28 02:04:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:15,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:18,207 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 02:04:18,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:18,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419297106] [2024-06-28 02:04:18,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419297106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:18,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:18,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:18,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271638832] [2024-06-28 02:04:18,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:18,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:18,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:18,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:18,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:18,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:04:18,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 441 transitions, 6998 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:18,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:18,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:04:18,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:21,552 INFO L124 PetriNetUnfolderBase]: 8158/13105 cut-off events. [2024-06-28 02:04:21,552 INFO L125 PetriNetUnfolderBase]: For 317186/317196 co-relation queries the response was YES. [2024-06-28 02:04:21,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83734 conditions, 13105 events. 8158/13105 cut-off events. For 317186/317196 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 90099 event pairs, 2489 based on Foata normal form. 11/12860 useless extension candidates. Maximal degree in co-relation 83604. Up to 11183 conditions per place. [2024-06-28 02:04:21,730 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 421 selfloop transitions, 107 changer transitions 0/536 dead transitions. [2024-06-28 02:04:21,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 536 transitions, 9188 flow [2024-06-28 02:04:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:21,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 02:04:21,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-28 02:04:21,732 INFO L175 Difference]: Start difference. First operand has 260 places, 441 transitions, 6998 flow. Second operand 8 states and 210 transitions. [2024-06-28 02:04:21,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 536 transitions, 9188 flow [2024-06-28 02:04:22,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 536 transitions, 9099 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:22,731 INFO L231 Difference]: Finished difference. Result has 267 places, 470 transitions, 7725 flow [2024-06-28 02:04:22,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6909, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7725, PETRI_PLACES=267, PETRI_TRANSITIONS=470} [2024-06-28 02:04:22,731 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 213 predicate places. [2024-06-28 02:04:22,731 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 470 transitions, 7725 flow [2024-06-28 02:04:22,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:22,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:22,731 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 02:04:22,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:04:22,732 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:22,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:22,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1403101112, now seen corresponding path program 2 times [2024-06-28 02:04:22,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:22,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811328744] [2024-06-28 02:04:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:22,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:25,402 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 02:04:25,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:25,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811328744] [2024-06-28 02:04:25,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811328744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:25,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:25,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:25,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475892594] [2024-06-28 02:04:25,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:25,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:25,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:25,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:25,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:25,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:04:25,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 470 transitions, 7725 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:25,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:25,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:04:25,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:28,812 INFO L124 PetriNetUnfolderBase]: 8334/13551 cut-off events. [2024-06-28 02:04:28,812 INFO L125 PetriNetUnfolderBase]: For 338605/338605 co-relation queries the response was YES. [2024-06-28 02:04:28,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88855 conditions, 13551 events. 8334/13551 cut-off events. For 338605/338605 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 95424 event pairs, 2201 based on Foata normal form. 1/13226 useless extension candidates. Maximal degree in co-relation 88721. Up to 11732 conditions per place. [2024-06-28 02:04:28,977 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 438 selfloop transitions, 119 changer transitions 0/565 dead transitions. [2024-06-28 02:04:28,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 565 transitions, 9883 flow [2024-06-28 02:04:28,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:04:28,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:04:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 02:04:28,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-28 02:04:28,978 INFO L175 Difference]: Start difference. First operand has 267 places, 470 transitions, 7725 flow. Second operand 9 states and 221 transitions. [2024-06-28 02:04:28,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 565 transitions, 9883 flow [2024-06-28 02:04:30,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 565 transitions, 9713 flow, removed 84 selfloop flow, removed 1 redundant places. [2024-06-28 02:04:30,131 INFO L231 Difference]: Finished difference. Result has 277 places, 504 transitions, 8472 flow [2024-06-28 02:04:30,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7601, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8472, PETRI_PLACES=277, PETRI_TRANSITIONS=504} [2024-06-28 02:04:30,132 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 223 predicate places. [2024-06-28 02:04:30,132 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 504 transitions, 8472 flow [2024-06-28 02:04:30,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:30,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:30,133 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 02:04:30,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:04:30,133 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:30,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:30,134 INFO L85 PathProgramCache]: Analyzing trace with hash -84950410, now seen corresponding path program 1 times [2024-06-28 02:04:30,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:30,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319431337] [2024-06-28 02:04:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:30,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:33,131 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 02:04:33,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:33,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319431337] [2024-06-28 02:04:33,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319431337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:33,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:33,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:04:33,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000376004] [2024-06-28 02:04:33,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:33,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:04:33,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:33,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:04:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:04:33,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:04:33,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 504 transitions, 8472 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:33,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:33,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:04:33,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:36,688 INFO L124 PetriNetUnfolderBase]: 7896/13011 cut-off events. [2024-06-28 02:04:36,689 INFO L125 PetriNetUnfolderBase]: For 336178/336317 co-relation queries the response was YES. [2024-06-28 02:04:36,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84646 conditions, 13011 events. 7896/13011 cut-off events. For 336178/336317 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 92911 event pairs, 2078 based on Foata normal form. 126/12710 useless extension candidates. Maximal degree in co-relation 84507. Up to 11030 conditions per place. [2024-06-28 02:04:36,836 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 399 selfloop transitions, 123 changer transitions 0/556 dead transitions. [2024-06-28 02:04:36,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 556 transitions, 9792 flow [2024-06-28 02:04:36,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:36,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 02:04:36,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 02:04:36,837 INFO L175 Difference]: Start difference. First operand has 277 places, 504 transitions, 8472 flow. Second operand 8 states and 204 transitions. [2024-06-28 02:04:36,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 556 transitions, 9792 flow [2024-06-28 02:04:37,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 556 transitions, 9593 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:37,980 INFO L231 Difference]: Finished difference. Result has 281 places, 507 transitions, 8572 flow [2024-06-28 02:04:37,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8273, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8572, PETRI_PLACES=281, PETRI_TRANSITIONS=507} [2024-06-28 02:04:37,980 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 227 predicate places. [2024-06-28 02:04:37,980 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 507 transitions, 8572 flow [2024-06-28 02:04:37,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:37,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:37,981 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 02:04:37,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:04:37,981 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:37,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1353752502, now seen corresponding path program 3 times [2024-06-28 02:04:37,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:37,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155261936] [2024-06-28 02:04:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:37,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:40,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:40,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155261936] [2024-06-28 02:04:40,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155261936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:40,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:40,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:40,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990735150] [2024-06-28 02:04:40,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:40,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:40,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:40,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:40,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:40,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:04:40,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 507 transitions, 8572 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 02:04:40,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:40,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:04:40,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:43,748 INFO L124 PetriNetUnfolderBase]: 8485/13624 cut-off events. [2024-06-28 02:04:43,748 INFO L125 PetriNetUnfolderBase]: For 363717/363727 co-relation queries the response was YES. [2024-06-28 02:04:43,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90523 conditions, 13624 events. 8485/13624 cut-off events. For 363717/363727 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 94217 event pairs, 2512 based on Foata normal form. 12/13359 useless extension candidates. Maximal degree in co-relation 90384. Up to 11533 conditions per place. [2024-06-28 02:04:43,945 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 436 selfloop transitions, 130 changer transitions 0/574 dead transitions. [2024-06-28 02:04:43,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 574 transitions, 10469 flow [2024-06-28 02:04:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:43,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 02:04:43,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-28 02:04:43,947 INFO L175 Difference]: Start difference. First operand has 281 places, 507 transitions, 8572 flow. Second operand 7 states and 179 transitions. [2024-06-28 02:04:43,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 574 transitions, 10469 flow [2024-06-28 02:04:45,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 574 transitions, 10319 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:45,334 INFO L231 Difference]: Finished difference. Result has 285 places, 517 transitions, 8936 flow [2024-06-28 02:04:45,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8422, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8936, PETRI_PLACES=285, PETRI_TRANSITIONS=517} [2024-06-28 02:04:45,334 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 231 predicate places. [2024-06-28 02:04:45,334 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 517 transitions, 8936 flow [2024-06-28 02:04:45,334 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 02:04:45,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:45,334 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 02:04:45,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:04:45,335 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:45,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:45,335 INFO L85 PathProgramCache]: Analyzing trace with hash 557464776, now seen corresponding path program 4 times [2024-06-28 02:04:45,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:45,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620776442] [2024-06-28 02:04:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:45,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:47,424 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 02:04:47,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:47,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620776442] [2024-06-28 02:04:47,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620776442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:47,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:47,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:47,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166768529] [2024-06-28 02:04:47,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:47,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:47,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:47,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:47,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:04:47,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 517 transitions, 8936 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 02:04:47,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:47,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:04:47,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:50,984 INFO L124 PetriNetUnfolderBase]: 8721/14271 cut-off events. [2024-06-28 02:04:50,984 INFO L125 PetriNetUnfolderBase]: For 382557/382557 co-relation queries the response was YES. [2024-06-28 02:04:51,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95062 conditions, 14271 events. 8721/14271 cut-off events. For 382557/382557 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 101514 event pairs, 2211 based on Foata normal form. 1/13891 useless extension candidates. Maximal degree in co-relation 94921. Up to 12070 conditions per place. [2024-06-28 02:04:51,208 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 429 selfloop transitions, 176 changer transitions 0/613 dead transitions. [2024-06-28 02:04:51,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 613 transitions, 11346 flow [2024-06-28 02:04:51,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:51,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:04:51,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-28 02:04:51,210 INFO L175 Difference]: Start difference. First operand has 285 places, 517 transitions, 8936 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:04:51,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 613 transitions, 11346 flow [2024-06-28 02:04:53,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 613 transitions, 11096 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-28 02:04:53,235 INFO L231 Difference]: Finished difference. Result has 291 places, 561 transitions, 9947 flow [2024-06-28 02:04:53,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8723, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9947, PETRI_PLACES=291, PETRI_TRANSITIONS=561} [2024-06-28 02:04:53,236 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 237 predicate places. [2024-06-28 02:04:53,236 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 561 transitions, 9947 flow [2024-06-28 02:04:53,236 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 02:04:53,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:53,237 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 02:04:53,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:04:53,237 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:53,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:53,237 INFO L85 PathProgramCache]: Analyzing trace with hash 480985356, now seen corresponding path program 2 times [2024-06-28 02:04:53,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:53,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606421336] [2024-06-28 02:04:53,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:53,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:55,966 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 02:04:55,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606421336] [2024-06-28 02:04:55,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606421336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:55,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:55,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:55,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666176658] [2024-06-28 02:04:55,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:55,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:55,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:55,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:56,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:04:56,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 561 transitions, 9947 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 02:04:56,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:56,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:04:56,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:59,855 INFO L124 PetriNetUnfolderBase]: 8222/13400 cut-off events. [2024-06-28 02:04:59,856 INFO L125 PetriNetUnfolderBase]: For 390944/391108 co-relation queries the response was YES. [2024-06-28 02:04:59,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91293 conditions, 13400 events. 8222/13400 cut-off events. For 390944/391108 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 95589 event pairs, 2107 based on Foata normal form. 145/13148 useless extension candidates. Maximal degree in co-relation 91150. Up to 11497 conditions per place. [2024-06-28 02:05:00,038 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 489 selfloop transitions, 78 changer transitions 0/610 dead transitions. [2024-06-28 02:05:00,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 610 transitions, 11383 flow [2024-06-28 02:05:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:00,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:00,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:05:00,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 02:05:00,039 INFO L175 Difference]: Start difference. First operand has 291 places, 561 transitions, 9947 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:05:00,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 610 transitions, 11383 flow [2024-06-28 02:05:01,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 610 transitions, 11093 flow, removed 70 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:01,649 INFO L231 Difference]: Finished difference. Result has 296 places, 568 transitions, 9926 flow [2024-06-28 02:05:01,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9657, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9926, PETRI_PLACES=296, PETRI_TRANSITIONS=568} [2024-06-28 02:05:01,650 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 242 predicate places. [2024-06-28 02:05:01,650 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 568 transitions, 9926 flow [2024-06-28 02:05:01,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 02:05:01,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:01,651 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 02:05:01,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:05:01,651 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:01,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:01,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1861780280, now seen corresponding path program 5 times [2024-06-28 02:05:01,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:01,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108879438] [2024-06-28 02:05:01,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:01,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:03,895 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 02:05:03,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:03,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108879438] [2024-06-28 02:05:03,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108879438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:03,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:03,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:03,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789484174] [2024-06-28 02:05:03,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:03,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:03,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:03,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:03,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:03,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:05:03,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 568 transitions, 9926 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 02:05:03,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:03,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:05:03,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:07,901 INFO L124 PetriNetUnfolderBase]: 8820/14213 cut-off events. [2024-06-28 02:05:07,901 INFO L125 PetriNetUnfolderBase]: For 408808/408832 co-relation queries the response was YES. [2024-06-28 02:05:08,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96802 conditions, 14213 events. 8820/14213 cut-off events. For 408808/408832 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 99339 event pairs, 2596 based on Foata normal form. 18/13906 useless extension candidates. Maximal degree in co-relation 96658. Up to 11898 conditions per place. [2024-06-28 02:05:08,121 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 469 selfloop transitions, 162 changer transitions 0/639 dead transitions. [2024-06-28 02:05:08,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 639 transitions, 12183 flow [2024-06-28 02:05:08,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:08,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 02:05:08,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 02:05:08,122 INFO L175 Difference]: Start difference. First operand has 296 places, 568 transitions, 9926 flow. Second operand 8 states and 188 transitions. [2024-06-28 02:05:08,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 639 transitions, 12183 flow [2024-06-28 02:05:09,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 639 transitions, 11964 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 02:05:09,670 INFO L231 Difference]: Finished difference. Result has 299 places, 582 transitions, 10445 flow [2024-06-28 02:05:09,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9717, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10445, PETRI_PLACES=299, PETRI_TRANSITIONS=582} [2024-06-28 02:05:09,671 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 245 predicate places. [2024-06-28 02:05:09,671 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 582 transitions, 10445 flow [2024-06-28 02:05:09,671 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 02:05:09,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:09,672 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 02:05:09,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:05:09,672 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:09,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:09,672 INFO L85 PathProgramCache]: Analyzing trace with hash 26758016, now seen corresponding path program 6 times [2024-06-28 02:05:09,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:09,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626807975] [2024-06-28 02:05:09,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:09,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:11,826 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 02:05:11,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:11,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626807975] [2024-06-28 02:05:11,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626807975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:11,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:11,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:11,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218074976] [2024-06-28 02:05:11,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:11,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:11,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:11,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:11,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:11,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:05:11,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 582 transitions, 10445 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 02:05:11,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:11,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:05:11,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:15,645 INFO L124 PetriNetUnfolderBase]: 8865/14277 cut-off events. [2024-06-28 02:05:15,646 INFO L125 PetriNetUnfolderBase]: For 423683/423707 co-relation queries the response was YES. [2024-06-28 02:05:15,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98550 conditions, 14277 events. 8865/14277 cut-off events. For 423683/423707 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 99791 event pairs, 2589 based on Foata normal form. 17/13968 useless extension candidates. Maximal degree in co-relation 98404. Up to 11928 conditions per place. [2024-06-28 02:05:15,831 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 463 selfloop transitions, 169 changer transitions 0/640 dead transitions. [2024-06-28 02:05:15,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 640 transitions, 12440 flow [2024-06-28 02:05:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:15,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 02:05:15,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-28 02:05:15,833 INFO L175 Difference]: Start difference. First operand has 299 places, 582 transitions, 10445 flow. Second operand 7 states and 170 transitions. [2024-06-28 02:05:15,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 640 transitions, 12440 flow [2024-06-28 02:05:17,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 640 transitions, 12289 flow, removed 72 selfloop flow, removed 2 redundant places. [2024-06-28 02:05:17,387 INFO L231 Difference]: Finished difference. Result has 305 places, 590 transitions, 10880 flow [2024-06-28 02:05:17,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10328, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10880, PETRI_PLACES=305, PETRI_TRANSITIONS=590} [2024-06-28 02:05:17,388 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 251 predicate places. [2024-06-28 02:05:17,388 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 590 transitions, 10880 flow [2024-06-28 02:05:17,388 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 02:05:17,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:17,389 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 02:05:17,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:05:17,389 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:17,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:17,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1019136802, now seen corresponding path program 7 times [2024-06-28 02:05:17,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:17,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423987301] [2024-06-28 02:05:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:17,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:19,831 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 02:05:19,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:19,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423987301] [2024-06-28 02:05:19,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423987301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:19,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:19,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:19,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126630173] [2024-06-28 02:05:19,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:19,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:19,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:19,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:19,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:19,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:05:19,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 590 transitions, 10880 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 02:05:19,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:19,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:05:19,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:24,814 INFO L124 PetriNetUnfolderBase]: 8910/14558 cut-off events. [2024-06-28 02:05:24,814 INFO L125 PetriNetUnfolderBase]: For 417737/417737 co-relation queries the response was YES. [2024-06-28 02:05:24,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99765 conditions, 14558 events. 8910/14558 cut-off events. For 417737/417737 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 103790 event pairs, 2088 based on Foata normal form. 1/14182 useless extension candidates. Maximal degree in co-relation 99616. Up to 11605 conditions per place. [2024-06-28 02:05:25,009 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 366 selfloop transitions, 290 changer transitions 0/664 dead transitions. [2024-06-28 02:05:25,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 664 transitions, 12828 flow [2024-06-28 02:05:25,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 02:05:25,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-28 02:05:25,010 INFO L175 Difference]: Start difference. First operand has 305 places, 590 transitions, 10880 flow. Second operand 8 states and 210 transitions. [2024-06-28 02:05:25,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 664 transitions, 12828 flow [2024-06-28 02:05:26,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 664 transitions, 12463 flow, removed 63 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:26,805 INFO L231 Difference]: Finished difference. Result has 312 places, 599 transitions, 11547 flow [2024-06-28 02:05:26,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10531, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11547, PETRI_PLACES=312, PETRI_TRANSITIONS=599} [2024-06-28 02:05:26,806 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 258 predicate places. [2024-06-28 02:05:26,806 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 599 transitions, 11547 flow [2024-06-28 02:05:26,806 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 02:05:26,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:26,807 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 02:05:26,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:05:26,807 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:26,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:26,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1024850722, now seen corresponding path program 8 times [2024-06-28 02:05:26,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:26,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882808707] [2024-06-28 02:05:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:26,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:29,076 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 02:05:29,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:29,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882808707] [2024-06-28 02:05:29,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882808707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:29,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:29,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:29,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869990761] [2024-06-28 02:05:29,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:29,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:29,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:29,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:29,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:29,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 02:05:29,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 599 transitions, 11547 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 02:05:29,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:29,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 02:05:29,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:33,615 INFO L124 PetriNetUnfolderBase]: 8907/14574 cut-off events. [2024-06-28 02:05:33,615 INFO L125 PetriNetUnfolderBase]: For 432355/432370 co-relation queries the response was YES. [2024-06-28 02:05:33,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101459 conditions, 14574 events. 8907/14574 cut-off events. For 432355/432370 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 103900 event pairs, 2094 based on Foata normal form. 4/14186 useless extension candidates. Maximal degree in co-relation 101307. Up to 11603 conditions per place. [2024-06-28 02:05:33,833 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 362 selfloop transitions, 286 changer transitions 0/656 dead transitions. [2024-06-28 02:05:33,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 656 transitions, 13320 flow [2024-06-28 02:05:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:33,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:33,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 02:05:33,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386904761904762 [2024-06-28 02:05:33,835 INFO L175 Difference]: Start difference. First operand has 312 places, 599 transitions, 11547 flow. Second operand 7 states and 181 transitions. [2024-06-28 02:05:33,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 656 transitions, 13320 flow [2024-06-28 02:05:35,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 656 transitions, 12752 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-28 02:05:35,747 INFO L231 Difference]: Finished difference. Result has 313 places, 599 transitions, 11574 flow [2024-06-28 02:05:35,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10983, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11574, PETRI_PLACES=313, PETRI_TRANSITIONS=599} [2024-06-28 02:05:35,748 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 259 predicate places. [2024-06-28 02:05:35,748 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 599 transitions, 11574 flow [2024-06-28 02:05:35,748 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 02:05:35,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:35,748 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 02:05:35,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:05:35,748 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:35,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:35,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1033430530, now seen corresponding path program 3 times [2024-06-28 02:05:35,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:35,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75719142] [2024-06-28 02:05:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:35,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:38,400 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 02:05:38,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:38,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75719142] [2024-06-28 02:05:38,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75719142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:38,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:38,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:38,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060745852] [2024-06-28 02:05:38,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:38,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:38,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:38,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:38,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:38,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:05:38,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 599 transitions, 11574 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 02:05:38,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:38,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:05:38,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:42,516 INFO L124 PetriNetUnfolderBase]: 8388/13820 cut-off events. [2024-06-28 02:05:42,517 INFO L125 PetriNetUnfolderBase]: For 428286/428498 co-relation queries the response was YES. [2024-06-28 02:05:42,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96774 conditions, 13820 events. 8388/13820 cut-off events. For 428286/428498 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 99470 event pairs, 2065 based on Foata normal form. 171/13513 useless extension candidates. Maximal degree in co-relation 96622. Up to 11415 conditions per place. [2024-06-28 02:05:42,721 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 436 selfloop transitions, 159 changer transitions 0/647 dead transitions. [2024-06-28 02:05:42,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 647 transitions, 13316 flow [2024-06-28 02:05:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 02:05:42,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 02:05:42,723 INFO L175 Difference]: Start difference. First operand has 313 places, 599 transitions, 11574 flow. Second operand 7 states and 169 transitions. [2024-06-28 02:05:42,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 647 transitions, 13316 flow [2024-06-28 02:05:44,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 647 transitions, 12962 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:44,205 INFO L231 Difference]: Finished difference. Result has 316 places, 612 transitions, 11847 flow [2024-06-28 02:05:44,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11222, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11847, PETRI_PLACES=316, PETRI_TRANSITIONS=612} [2024-06-28 02:05:44,206 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 262 predicate places. [2024-06-28 02:05:44,206 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 612 transitions, 11847 flow [2024-06-28 02:05:44,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 02:05:44,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:44,207 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 02:05:44,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:05:44,207 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:44,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:44,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1019145730, now seen corresponding path program 4 times [2024-06-28 02:05:44,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:44,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095234649] [2024-06-28 02:05:44,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:44,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:46,999 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 02:05:46,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:46,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095234649] [2024-06-28 02:05:46,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095234649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:46,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:46,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:46,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060626463] [2024-06-28 02:05:47,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:47,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:47,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:47,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:47,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:47,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 02:05:47,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 612 transitions, 11847 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 02:05:47,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:47,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 02:05:47,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand