./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe002_rmo.oepc.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/safe002_rmo.oepc.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/safe002_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe002_rmo.oepc.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 01:53:06,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:53:06,882 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:53:06,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:53:06,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:53:06,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:53:06,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:53:06,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:53:06,909 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:53:06,912 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:53:06,912 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:53:06,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:53:06,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:53:06,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:53:06,914 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:53:06,915 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:53:06,915 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:53:06,915 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:53:06,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:53:06,915 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:53:06,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:53:06,916 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:53:06,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:53:06,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:53:06,917 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:53:06,917 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:53:06,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:53:06,917 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:53:06,918 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:53:06,918 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:53:06,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:53:06,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:53:06,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:53:06,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:53:06,919 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:53:06,919 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:53:06,919 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:53:06,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:53:06,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:53:06,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:53:06,920 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:53:06,920 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:53:06,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:53:06,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:53:07,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:53:07,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:53:07,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:53:07,181 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:53:07,182 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:53:07,183 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_rmo.oepc.i [2024-06-28 01:53:08,148 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:53:08,359 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:53:08,360 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_rmo.oepc.i [2024-06-28 01:53:08,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6717ce34b/c1333d75fe4d4623b75054d5f02f93f9/FLAG2c47d1d5e [2024-06-28 01:53:08,380 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6717ce34b/c1333d75fe4d4623b75054d5f02f93f9 [2024-06-28 01:53:08,382 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:53:08,382 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:53:08,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe002_rmo.oepc.yml/witness.yml [2024-06-28 01:53:08,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:53:08,570 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:53:08,571 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:53:08,571 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:53:08,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:53:08,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:53:08" (1/2) ... [2024-06-28 01:53:08,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7253e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:08, skipping insertion in model container [2024-06-28 01:53:08,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:53:08" (1/2) ... [2024-06-28 01:53:08,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d70a792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:08, skipping insertion in model container [2024-06-28 01:53:08,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:53:08" (2/2) ... [2024-06-28 01:53:08,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7253e2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:08, skipping insertion in model container [2024-06-28 01:53:08,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:53:08" (2/2) ... [2024-06-28 01:53:08,578 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:53:08,697 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:53:08,698 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_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_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__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) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$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$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! 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$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff0 == 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$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:53:08,698 INFO L97 edCorrectnessWitness]: Location invariant before [L857-L857] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$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$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_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) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! multithreaded || __unbuffered_p0_EAX$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$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$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) || y$mem_tmp == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:53:08,698 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_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_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__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) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$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$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! 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$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff0 == 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$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:53:08,698 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:53:08,698 INFO L106 edCorrectnessWitness]: ghost_update [L853-L853] multithreaded = 1; [2024-06-28 01:53:08,735 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:53:08,887 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/safe002_rmo.oepc.i[993,1006] [2024-06-28 01:53:09,039 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:53:09,052 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:53:09,077 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/safe002_rmo.oepc.i[993,1006] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:53:09,173 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:53:09,200 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:53:09,201 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09 WrapperNode [2024-06-28 01:53:09,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:53:09,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:53:09,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:53:09,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:53:09,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (1/1) ... [2024-06-28 01:53:09,220 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (1/1) ... [2024-06-28 01:53:09,249 INFO L138 Inliner]: procedures = 175, calls = 106, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 277 [2024-06-28 01:53:09,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:53:09,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:53:09,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:53:09,250 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:53:09,258 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (1/1) ... [2024-06-28 01:53:09,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (1/1) ... [2024-06-28 01:53:09,262 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (1/1) ... [2024-06-28 01:53:09,276 INFO L175 MemorySlicer]: Split 66 memory accesses to 2 slices as follows [2, 64]. 97 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-06-28 01:53:09,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (1/1) ... [2024-06-28 01:53:09,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (1/1) ... [2024-06-28 01:53:09,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (1/1) ... [2024-06-28 01:53:09,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (1/1) ... [2024-06-28 01:53:09,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (1/1) ... [2024-06-28 01:53:09,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (1/1) ... [2024-06-28 01:53:09,331 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:53:09,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:53:09,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:53:09,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:53:09,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (1/1) ... [2024-06-28 01:53:09,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:53:09,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:53:09,387 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 01:53:09,390 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 01:53:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:53:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:53:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:53:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:53:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:53:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:53:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:53:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:53:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:53:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:53:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:53:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:53:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:53:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:53:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:53:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:53:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:53:09,419 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 01:53:09,559 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:53:09,561 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:53:10,036 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:53:10,036 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:53:10,493 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:53:10,494 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:53:10,494 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:53:10 BoogieIcfgContainer [2024-06-28 01:53:10,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:53:10,496 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:53:10,496 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:53:10,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:53:10,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:53:08" (1/4) ... [2024-06-28 01:53:10,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca237eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:53:10, skipping insertion in model container [2024-06-28 01:53:10,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:53:08" (2/4) ... [2024-06-28 01:53:10,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca237eb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:53:10, skipping insertion in model container [2024-06-28 01:53:10,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:09" (3/4) ... [2024-06-28 01:53:10,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ca237eb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:53:10, skipping insertion in model container [2024-06-28 01:53:10,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:53:10" (4/4) ... [2024-06-28 01:53:10,502 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_rmo.oepc.i [2024-06-28 01:53:10,516 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:53:10,516 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:53:10,516 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:53:10,581 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:53:10,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:53:10,639 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:53:10,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:53:10,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:53:10,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:53:10,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-28 01:53:10,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:53:10,667 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;@7d8a4e6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:53:10,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:53:10,672 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:53:10,672 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:53:10,672 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:53:10,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:10,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:53:10,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:10,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:10,677 INFO L85 PathProgramCache]: Analyzing trace with hash 897102359, now seen corresponding path program 1 times [2024-06-28 01:53:10,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:10,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128891738] [2024-06-28 01:53:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:10,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:12,401 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 01:53:12,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:12,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128891738] [2024-06-28 01:53:12,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128891738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:12,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:12,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:53:12,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320320178] [2024-06-28 01:53:12,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:12,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:53:12,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:12,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:53:12,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:53:12,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:53:12,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:12,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:12,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:53:12,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:13,397 INFO L124 PetriNetUnfolderBase]: 3185/4950 cut-off events. [2024-06-28 01:53:13,397 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-28 01:53:13,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9631 conditions, 4950 events. 3185/4950 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 28954 event pairs, 1785 based on Foata normal form. 0/4767 useless extension candidates. Maximal degree in co-relation 9619. Up to 4593 conditions per place. [2024-06-28 01:53:13,426 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 46 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:53:13,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 235 flow [2024-06-28 01:53:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:53:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:53:13,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-06-28 01:53:13,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-28 01:53:13,438 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 90 transitions. [2024-06-28 01:53:13,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 235 flow [2024-06-28 01:53:13,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 230 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:13,445 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 125 flow [2024-06-28 01:53:13,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-28 01:53:13,451 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-28 01:53:13,452 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 125 flow [2024-06-28 01:53:13,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:13,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:13,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:13,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:53:13,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:13,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:13,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1173004138, now seen corresponding path program 1 times [2024-06-28 01:53:13,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:13,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697130461] [2024-06-28 01:53:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:13,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:15,530 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 01:53:15,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:15,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697130461] [2024-06-28 01:53:15,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697130461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:15,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:15,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:53:15,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103621718] [2024-06-28 01:53:15,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:15,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:53:15,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:15,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:53:15,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:53:15,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:53:15,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:15,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:15,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:53:15,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:16,492 INFO L124 PetriNetUnfolderBase]: 3176/4725 cut-off events. [2024-06-28 01:53:16,494 INFO L125 PetriNetUnfolderBase]: For 799/799 co-relation queries the response was YES. [2024-06-28 01:53:16,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10544 conditions, 4725 events. 3176/4725 cut-off events. For 799/799 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 26735 event pairs, 1200 based on Foata normal form. 4/4724 useless extension candidates. Maximal degree in co-relation 10532. Up to 4520 conditions per place. [2024-06-28 01:53:16,515 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 64 selfloop transitions, 10 changer transitions 0/82 dead transitions. [2024-06-28 01:53:16,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 82 transitions, 367 flow [2024-06-28 01:53:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:53:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:53:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-28 01:53:16,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2024-06-28 01:53:16,519 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 125 flow. Second operand 4 states and 122 transitions. [2024-06-28 01:53:16,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 82 transitions, 367 flow [2024-06-28 01:53:16,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:16,522 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 188 flow [2024-06-28 01:53:16,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-28 01:53:16,525 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-06-28 01:53:16,525 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 188 flow [2024-06-28 01:53:16,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:16,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:16,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:16,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:53:16,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:16,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:16,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1110575416, now seen corresponding path program 1 times [2024-06-28 01:53:16,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:16,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656838280] [2024-06-28 01:53:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:16,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:19,402 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 01:53:19,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:19,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656838280] [2024-06-28 01:53:19,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656838280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:19,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:19,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:53:19,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477830988] [2024-06-28 01:53:19,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:19,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:53:19,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:19,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:53:19,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:53:19,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:53:19,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:19,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:19,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:53:19,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:20,866 INFO L124 PetriNetUnfolderBase]: 4041/5921 cut-off events. [2024-06-28 01:53:20,867 INFO L125 PetriNetUnfolderBase]: For 3047/3047 co-relation queries the response was YES. [2024-06-28 01:53:20,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14675 conditions, 5921 events. 4041/5921 cut-off events. For 3047/3047 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 32386 event pairs, 964 based on Foata normal form. 8/5926 useless extension candidates. Maximal degree in co-relation 14660. Up to 5570 conditions per place. [2024-06-28 01:53:20,891 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 93 selfloop transitions, 15 changer transitions 0/115 dead transitions. [2024-06-28 01:53:20,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 115 transitions, 566 flow [2024-06-28 01:53:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:20,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-06-28 01:53:20,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-06-28 01:53:20,894 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 188 flow. Second operand 6 states and 174 transitions. [2024-06-28 01:53:20,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 115 transitions, 566 flow [2024-06-28 01:53:20,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 115 transitions, 566 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 01:53:20,900 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 258 flow [2024-06-28 01:53:20,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-28 01:53:20,901 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-06-28 01:53:20,901 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 258 flow [2024-06-28 01:53:20,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:20,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:20,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:20,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:53:20,902 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:20,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1471794108, now seen corresponding path program 1 times [2024-06-28 01:53:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:20,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813493020] [2024-06-28 01:53:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:20,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:22,264 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 01:53:22,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:22,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813493020] [2024-06-28 01:53:22,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813493020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:22,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:22,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:53:22,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899322877] [2024-06-28 01:53:22,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:22,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:53:22,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:53:22,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:53:22,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:22,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:22,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:22,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:22,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:23,532 INFO L124 PetriNetUnfolderBase]: 4033/6190 cut-off events. [2024-06-28 01:53:23,533 INFO L125 PetriNetUnfolderBase]: For 5223/5223 co-relation queries the response was YES. [2024-06-28 01:53:23,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16171 conditions, 6190 events. 4033/6190 cut-off events. For 5223/5223 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 35569 event pairs, 1531 based on Foata normal form. 3/6190 useless extension candidates. Maximal degree in co-relation 16151. Up to 5745 conditions per place. [2024-06-28 01:53:23,569 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 67 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2024-06-28 01:53:23,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 486 flow [2024-06-28 01:53:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:53:23,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:53:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 01:53:23,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-28 01:53:23,573 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 258 flow. Second operand 5 states and 118 transitions. [2024-06-28 01:53:23,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 486 flow [2024-06-28 01:53:23,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 457 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:23,580 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 286 flow [2024-06-28 01:53:23,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-06-28 01:53:23,581 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2024-06-28 01:53:23,582 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 286 flow [2024-06-28 01:53:23,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:23,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:23,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:23,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:53:23,583 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:23,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:23,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1619021591, now seen corresponding path program 1 times [2024-06-28 01:53:23,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:23,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010233080] [2024-06-28 01:53:23,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:23,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:25,323 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 01:53:25,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010233080] [2024-06-28 01:53:25,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010233080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:25,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:25,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:25,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638677021] [2024-06-28 01:53:25,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:25,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:25,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:25,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:25,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:25,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:25,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 286 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:25,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:25,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:25,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:26,782 INFO L124 PetriNetUnfolderBase]: 4023/6170 cut-off events. [2024-06-28 01:53:26,783 INFO L125 PetriNetUnfolderBase]: For 7338/7338 co-relation queries the response was YES. [2024-06-28 01:53:26,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17189 conditions, 6170 events. 4023/6170 cut-off events. For 7338/7338 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 34883 event pairs, 1651 based on Foata normal form. 4/6171 useless extension candidates. Maximal degree in co-relation 17167. Up to 5721 conditions per place. [2024-06-28 01:53:26,813 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 83 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2024-06-28 01:53:26,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 622 flow [2024-06-28 01:53:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:26,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 01:53:26,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-28 01:53:26,819 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 286 flow. Second operand 6 states and 140 transitions. [2024-06-28 01:53:26,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 622 flow [2024-06-28 01:53:26,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 103 transitions, 581 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:26,825 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 382 flow [2024-06-28 01:53:26,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2024-06-28 01:53:26,827 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2024-06-28 01:53:26,827 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 382 flow [2024-06-28 01:53:26,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:26,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:26,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:26,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:53:26,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:26,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:26,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1344217723, now seen corresponding path program 1 times [2024-06-28 01:53:26,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:26,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008924230] [2024-06-28 01:53:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:26,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:29,108 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 01:53:29,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:29,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008924230] [2024-06-28 01:53:29,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008924230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:29,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:29,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:29,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054687719] [2024-06-28 01:53:29,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:29,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:29,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:29,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:29,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:29,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:29,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 382 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:29,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:29,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:29,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:30,673 INFO L124 PetriNetUnfolderBase]: 4195/6133 cut-off events. [2024-06-28 01:53:30,673 INFO L125 PetriNetUnfolderBase]: For 10088/10094 co-relation queries the response was YES. [2024-06-28 01:53:30,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19049 conditions, 6133 events. 4195/6133 cut-off events. For 10088/10094 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 32693 event pairs, 1399 based on Foata normal form. 7/6133 useless extension candidates. Maximal degree in co-relation 19024. Up to 5724 conditions per place. [2024-06-28 01:53:30,703 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 97 selfloop transitions, 29 changer transitions 0/132 dead transitions. [2024-06-28 01:53:30,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 132 transitions, 902 flow [2024-06-28 01:53:30,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:53:30,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-06-28 01:53:30,705 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 382 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:53:30,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 132 transitions, 902 flow [2024-06-28 01:53:30,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 132 transitions, 890 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:30,712 INFO L231 Difference]: Finished difference. Result has 77 places, 87 transitions, 586 flow [2024-06-28 01:53:30,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=586, PETRI_PLACES=77, PETRI_TRANSITIONS=87} [2024-06-28 01:53:30,713 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2024-06-28 01:53:30,713 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 87 transitions, 586 flow [2024-06-28 01:53:30,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:30,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:30,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:30,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:53:30,713 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:30,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:30,714 INFO L85 PathProgramCache]: Analyzing trace with hash -413560961, now seen corresponding path program 2 times [2024-06-28 01:53:30,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:30,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927794379] [2024-06-28 01:53:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:30,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:33,965 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 01:53:33,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:33,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927794379] [2024-06-28 01:53:33,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927794379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:33,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:33,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:33,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236670798] [2024-06-28 01:53:33,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:33,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:33,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:33,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:33,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:33,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:33,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 87 transitions, 586 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:33,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:33,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:33,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:35,612 INFO L124 PetriNetUnfolderBase]: 4393/6432 cut-off events. [2024-06-28 01:53:35,612 INFO L125 PetriNetUnfolderBase]: For 15500/15503 co-relation queries the response was YES. [2024-06-28 01:53:35,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22211 conditions, 6432 events. 4393/6432 cut-off events. For 15500/15503 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35164 event pairs, 1216 based on Foata normal form. 5/6433 useless extension candidates. Maximal degree in co-relation 22180. Up to 5880 conditions per place. [2024-06-28 01:53:35,649 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 108 selfloop transitions, 46 changer transitions 0/160 dead transitions. [2024-06-28 01:53:35,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 160 transitions, 1224 flow [2024-06-28 01:53:35,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:53:35,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:53:35,652 INFO L175 Difference]: Start difference. First operand has 77 places, 87 transitions, 586 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:53:35,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 160 transitions, 1224 flow [2024-06-28 01:53:35,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 160 transitions, 1198 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:35,665 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 848 flow [2024-06-28 01:53:35,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=848, PETRI_PLACES=85, PETRI_TRANSITIONS=104} [2024-06-28 01:53:35,666 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 34 predicate places. [2024-06-28 01:53:35,666 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 848 flow [2024-06-28 01:53:35,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:35,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:35,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:35,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:53:35,667 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:35,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:35,667 INFO L85 PathProgramCache]: Analyzing trace with hash 65563783, now seen corresponding path program 3 times [2024-06-28 01:53:35,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:35,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170937194] [2024-06-28 01:53:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:35,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:37,861 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 01:53:37,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:37,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170937194] [2024-06-28 01:53:37,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170937194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:37,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:37,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:37,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600848600] [2024-06-28 01:53:37,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:37,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:37,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:37,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:37,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:37,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:37,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 104 transitions, 848 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:37,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:37,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:37,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:39,519 INFO L124 PetriNetUnfolderBase]: 4379/6402 cut-off events. [2024-06-28 01:53:39,519 INFO L125 PetriNetUnfolderBase]: For 17656/17659 co-relation queries the response was YES. [2024-06-28 01:53:39,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22999 conditions, 6402 events. 4379/6402 cut-off events. For 17656/17659 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 34175 event pairs, 1393 based on Foata normal form. 7/6401 useless extension candidates. Maximal degree in co-relation 22963. Up to 5868 conditions per place. [2024-06-28 01:53:39,555 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 97 selfloop transitions, 43 changer transitions 0/146 dead transitions. [2024-06-28 01:53:39,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 146 transitions, 1270 flow [2024-06-28 01:53:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:39,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:39,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:53:39,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:53:39,557 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 848 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:53:39,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 146 transitions, 1270 flow [2024-06-28 01:53:39,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 146 transitions, 1225 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 01:53:39,578 INFO L231 Difference]: Finished difference. Result has 89 places, 104 transitions, 902 flow [2024-06-28 01:53:39,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=902, PETRI_PLACES=89, PETRI_TRANSITIONS=104} [2024-06-28 01:53:39,580 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2024-06-28 01:53:39,580 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 104 transitions, 902 flow [2024-06-28 01:53:39,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:39,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:39,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:39,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:53:39,581 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:39,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:39,581 INFO L85 PathProgramCache]: Analyzing trace with hash 13832104, now seen corresponding path program 1 times [2024-06-28 01:53:39,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:39,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011895005] [2024-06-28 01:53:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:39,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:42,687 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 01:53:42,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:42,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011895005] [2024-06-28 01:53:42,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011895005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:42,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:42,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:42,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456604496] [2024-06-28 01:53:42,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:42,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:42,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:42,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:42,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:42,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:42,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 104 transitions, 902 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:42,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:42,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:42,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:44,531 INFO L124 PetriNetUnfolderBase]: 4433/6502 cut-off events. [2024-06-28 01:53:44,532 INFO L125 PetriNetUnfolderBase]: For 20198/20198 co-relation queries the response was YES. [2024-06-28 01:53:44,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23621 conditions, 6502 events. 4433/6502 cut-off events. For 20198/20198 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 35701 event pairs, 1166 based on Foata normal form. 3/6502 useless extension candidates. Maximal degree in co-relation 23583. Up to 6076 conditions per place. [2024-06-28 01:53:44,572 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 133 selfloop transitions, 27 changer transitions 0/166 dead transitions. [2024-06-28 01:53:44,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 166 transitions, 1428 flow [2024-06-28 01:53:44,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:53:44,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-06-28 01:53:44,574 INFO L175 Difference]: Start difference. First operand has 89 places, 104 transitions, 902 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:53:44,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 166 transitions, 1428 flow [2024-06-28 01:53:44,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 166 transitions, 1367 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:44,594 INFO L231 Difference]: Finished difference. Result has 93 places, 107 transitions, 931 flow [2024-06-28 01:53:44,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=931, PETRI_PLACES=93, PETRI_TRANSITIONS=107} [2024-06-28 01:53:44,595 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 42 predicate places. [2024-06-28 01:53:44,595 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 107 transitions, 931 flow [2024-06-28 01:53:44,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:44,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:44,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:44,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:53:44,596 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:44,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1278922416, now seen corresponding path program 2 times [2024-06-28 01:53:44,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:44,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048214020] [2024-06-28 01:53:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:44,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:47,126 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 01:53:47,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:47,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048214020] [2024-06-28 01:53:47,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048214020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:47,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:47,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:47,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140181488] [2024-06-28 01:53:47,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:47,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:47,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:47,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:47,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:47,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 107 transitions, 931 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:47,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:47,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:47,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:49,022 INFO L124 PetriNetUnfolderBase]: 4487/6585 cut-off events. [2024-06-28 01:53:49,023 INFO L125 PetriNetUnfolderBase]: For 25069/25072 co-relation queries the response was YES. [2024-06-28 01:53:49,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24658 conditions, 6585 events. 4487/6585 cut-off events. For 25069/25072 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 36156 event pairs, 1205 based on Foata normal form. 5/6586 useless extension candidates. Maximal degree in co-relation 24619. Up to 5706 conditions per place. [2024-06-28 01:53:49,059 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 115 selfloop transitions, 50 changer transitions 0/171 dead transitions. [2024-06-28 01:53:49,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 171 transitions, 1533 flow [2024-06-28 01:53:49,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:49,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 01:53:49,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547112462006079 [2024-06-28 01:53:49,062 INFO L175 Difference]: Start difference. First operand has 93 places, 107 transitions, 931 flow. Second operand 7 states and 180 transitions. [2024-06-28 01:53:49,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 171 transitions, 1533 flow [2024-06-28 01:53:49,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 171 transitions, 1457 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:53:49,091 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 1028 flow [2024-06-28 01:53:49,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1028, PETRI_PLACES=94, PETRI_TRANSITIONS=113} [2024-06-28 01:53:49,092 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 43 predicate places. [2024-06-28 01:53:49,092 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 1028 flow [2024-06-28 01:53:49,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:49,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:49,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:49,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:53:49,093 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:49,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:49,094 INFO L85 PathProgramCache]: Analyzing trace with hash 912507252, now seen corresponding path program 1 times [2024-06-28 01:53:49,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:49,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107919805] [2024-06-28 01:53:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:49,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:51,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:51,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107919805] [2024-06-28 01:53:51,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107919805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:51,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:51,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:51,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596167317] [2024-06-28 01:53:51,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:51,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:51,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:51,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:51,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:51,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:51,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 113 transitions, 1028 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:51,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:51,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:51,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:53,475 INFO L124 PetriNetUnfolderBase]: 5183/7605 cut-off events. [2024-06-28 01:53:53,475 INFO L125 PetriNetUnfolderBase]: For 31600/31603 co-relation queries the response was YES. [2024-06-28 01:53:53,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28979 conditions, 7605 events. 5183/7605 cut-off events. For 31600/31603 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 42176 event pairs, 1232 based on Foata normal form. 12/7613 useless extension candidates. Maximal degree in co-relation 28940. Up to 6316 conditions per place. [2024-06-28 01:53:53,522 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 143 selfloop transitions, 61 changer transitions 0/210 dead transitions. [2024-06-28 01:53:53,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 210 transitions, 1836 flow [2024-06-28 01:53:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:53:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:53:53,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:53:53,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 01:53:53,524 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 1028 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:53:53,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 210 transitions, 1836 flow [2024-06-28 01:53:53,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 210 transitions, 1784 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:53,561 INFO L231 Difference]: Finished difference. Result has 102 places, 130 transitions, 1255 flow [2024-06-28 01:53:53,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1255, PETRI_PLACES=102, PETRI_TRANSITIONS=130} [2024-06-28 01:53:53,562 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 51 predicate places. [2024-06-28 01:53:53,562 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 130 transitions, 1255 flow [2024-06-28 01:53:53,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:53,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:53,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:53,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:53:53,562 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:53,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2032478590, now seen corresponding path program 2 times [2024-06-28 01:53:53,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:53,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583192951] [2024-06-28 01:53:53,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:53,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:55,961 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 01:53:55,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:55,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583192951] [2024-06-28 01:53:55,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583192951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:55,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:55,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:55,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803557443] [2024-06-28 01:53:55,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:55,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:55,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:55,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:55,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:55,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:55,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 130 transitions, 1255 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:55,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:55,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:55,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:57,796 INFO L124 PetriNetUnfolderBase]: 5267/7674 cut-off events. [2024-06-28 01:53:57,796 INFO L125 PetriNetUnfolderBase]: For 41606/41609 co-relation queries the response was YES. [2024-06-28 01:53:57,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33561 conditions, 7674 events. 5267/7674 cut-off events. For 41606/41609 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 41430 event pairs, 1395 based on Foata normal form. 12/7678 useless extension candidates. Maximal degree in co-relation 33518. Up to 6787 conditions per place. [2024-06-28 01:53:57,840 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 142 selfloop transitions, 54 changer transitions 0/202 dead transitions. [2024-06-28 01:53:57,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 202 transitions, 1974 flow [2024-06-28 01:53:57,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:53:57,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:53:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:53:57,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 01:53:57,842 INFO L175 Difference]: Start difference. First operand has 102 places, 130 transitions, 1255 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:53:57,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 202 transitions, 1974 flow [2024-06-28 01:53:57,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 202 transitions, 1885 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 01:53:57,890 INFO L231 Difference]: Finished difference. Result has 107 places, 139 transitions, 1388 flow [2024-06-28 01:53:57,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1388, PETRI_PLACES=107, PETRI_TRANSITIONS=139} [2024-06-28 01:53:57,891 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 56 predicate places. [2024-06-28 01:53:57,891 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 139 transitions, 1388 flow [2024-06-28 01:53:57,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:57,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:57,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:57,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:53:57,892 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:53:57,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:57,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1101553560, now seen corresponding path program 3 times [2024-06-28 01:53:57,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:57,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766957311] [2024-06-28 01:53:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:57,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:00,092 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 01:54:00,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:00,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766957311] [2024-06-28 01:54:00,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766957311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:00,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:00,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:00,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363216669] [2024-06-28 01:54:00,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:00,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:00,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:00,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:00,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:00,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:00,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 139 transitions, 1388 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:00,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:00,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:00,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:02,058 INFO L124 PetriNetUnfolderBase]: 5267/7676 cut-off events. [2024-06-28 01:54:02,058 INFO L125 PetriNetUnfolderBase]: For 46238/46241 co-relation queries the response was YES. [2024-06-28 01:54:02,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34790 conditions, 7676 events. 5267/7676 cut-off events. For 46238/46241 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 41190 event pairs, 1302 based on Foata normal form. 6/7674 useless extension candidates. Maximal degree in co-relation 34744. Up to 7045 conditions per place. [2024-06-28 01:54:02,104 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 176 selfloop transitions, 45 changer transitions 0/227 dead transitions. [2024-06-28 01:54:02,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 227 transitions, 2442 flow [2024-06-28 01:54:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:02,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:02,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:54:02,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-06-28 01:54:02,105 INFO L175 Difference]: Start difference. First operand has 107 places, 139 transitions, 1388 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:54:02,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 227 transitions, 2442 flow [2024-06-28 01:54:02,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 227 transitions, 2319 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:02,161 INFO L231 Difference]: Finished difference. Result has 113 places, 172 transitions, 1864 flow [2024-06-28 01:54:02,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1864, PETRI_PLACES=113, PETRI_TRANSITIONS=172} [2024-06-28 01:54:02,163 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 62 predicate places. [2024-06-28 01:54:02,163 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 172 transitions, 1864 flow [2024-06-28 01:54:02,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:02,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:02,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:02,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:54:02,163 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:02,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:02,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1101790896, now seen corresponding path program 3 times [2024-06-28 01:54:02,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:02,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731683202] [2024-06-28 01:54:02,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:02,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:04,577 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 01:54:04,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:04,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731683202] [2024-06-28 01:54:04,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731683202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:04,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:04,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:04,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736730029] [2024-06-28 01:54:04,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:04,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:04,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:04,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:04,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 172 transitions, 1864 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:04,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:04,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:04,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:06,559 INFO L124 PetriNetUnfolderBase]: 5259/7667 cut-off events. [2024-06-28 01:54:06,559 INFO L125 PetriNetUnfolderBase]: For 52337/52343 co-relation queries the response was YES. [2024-06-28 01:54:06,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36841 conditions, 7667 events. 5259/7667 cut-off events. For 52337/52343 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 41765 event pairs, 1312 based on Foata normal form. 4/7662 useless extension candidates. Maximal degree in co-relation 36790. Up to 6757 conditions per place. [2024-06-28 01:54:06,604 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 161 selfloop transitions, 60 changer transitions 0/227 dead transitions. [2024-06-28 01:54:06,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 227 transitions, 2539 flow [2024-06-28 01:54:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:54:06,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2024-06-28 01:54:06,605 INFO L175 Difference]: Start difference. First operand has 113 places, 172 transitions, 1864 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:54:06,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 227 transitions, 2539 flow [2024-06-28 01:54:06,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 227 transitions, 2499 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-28 01:54:06,668 INFO L231 Difference]: Finished difference. Result has 119 places, 172 transitions, 1961 flow [2024-06-28 01:54:06,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1961, PETRI_PLACES=119, PETRI_TRANSITIONS=172} [2024-06-28 01:54:06,668 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 68 predicate places. [2024-06-28 01:54:06,669 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 172 transitions, 1961 flow [2024-06-28 01:54:06,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:06,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:06,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:06,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:54:06,669 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:06,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:06,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1101544632, now seen corresponding path program 1 times [2024-06-28 01:54:06,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:06,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176733468] [2024-06-28 01:54:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:06,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:09,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:09,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176733468] [2024-06-28 01:54:09,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176733468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:09,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:09,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:09,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949443711] [2024-06-28 01:54:09,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:09,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:09,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:09,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:09,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:09,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:09,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 172 transitions, 1961 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:09,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:09,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:09,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:11,374 INFO L124 PetriNetUnfolderBase]: 5251/7935 cut-off events. [2024-06-28 01:54:11,374 INFO L125 PetriNetUnfolderBase]: For 56716/56716 co-relation queries the response was YES. [2024-06-28 01:54:11,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37410 conditions, 7935 events. 5251/7935 cut-off events. For 56716/56716 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 44797 event pairs, 1627 based on Foata normal form. 4/7936 useless extension candidates. Maximal degree in co-relation 37356. Up to 7353 conditions per place. [2024-06-28 01:54:11,426 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 192 selfloop transitions, 18 changer transitions 0/216 dead transitions. [2024-06-28 01:54:11,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 216 transitions, 2525 flow [2024-06-28 01:54:11,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:11,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:11,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:54:11,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-28 01:54:11,429 INFO L175 Difference]: Start difference. First operand has 119 places, 172 transitions, 1961 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:54:11,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 216 transitions, 2525 flow [2024-06-28 01:54:11,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 216 transitions, 2376 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:11,499 INFO L231 Difference]: Finished difference. Result has 120 places, 175 transitions, 1898 flow [2024-06-28 01:54:11,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1898, PETRI_PLACES=120, PETRI_TRANSITIONS=175} [2024-06-28 01:54:11,499 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 69 predicate places. [2024-06-28 01:54:11,500 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 175 transitions, 1898 flow [2024-06-28 01:54:11,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:11,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:11,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:11,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:54:11,500 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:11,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:11,501 INFO L85 PathProgramCache]: Analyzing trace with hash -995606985, now seen corresponding path program 1 times [2024-06-28 01:54:11,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:11,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910113363] [2024-06-28 01:54:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:11,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:14,396 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 01:54:14,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:14,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910113363] [2024-06-28 01:54:14,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910113363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:14,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:14,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:14,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436767621] [2024-06-28 01:54:14,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:14,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:14,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:14,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:14,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:14,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:14,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 175 transitions, 1898 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:14,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:14,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:14,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:16,897 INFO L124 PetriNetUnfolderBase]: 5695/8343 cut-off events. [2024-06-28 01:54:16,897 INFO L125 PetriNetUnfolderBase]: For 61745/61745 co-relation queries the response was YES. [2024-06-28 01:54:16,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40211 conditions, 8343 events. 5695/8343 cut-off events. For 61745/61745 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 46258 event pairs, 1282 based on Foata normal form. 10/8350 useless extension candidates. Maximal degree in co-relation 40156. Up to 7422 conditions per place. [2024-06-28 01:54:16,950 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 222 selfloop transitions, 53 changer transitions 0/281 dead transitions. [2024-06-28 01:54:16,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 281 transitions, 2992 flow [2024-06-28 01:54:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:54:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:54:16,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-28 01:54:16,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-28 01:54:16,951 INFO L175 Difference]: Start difference. First operand has 120 places, 175 transitions, 1898 flow. Second operand 10 states and 255 transitions. [2024-06-28 01:54:16,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 281 transitions, 2992 flow [2024-06-28 01:54:17,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 281 transitions, 2930 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:17,030 INFO L231 Difference]: Finished difference. Result has 127 places, 193 transitions, 2173 flow [2024-06-28 01:54:17,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2173, PETRI_PLACES=127, PETRI_TRANSITIONS=193} [2024-06-28 01:54:17,031 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 76 predicate places. [2024-06-28 01:54:17,031 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 193 transitions, 2173 flow [2024-06-28 01:54:17,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:17,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:17,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:17,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:54:17,032 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:17,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash 518732705, now seen corresponding path program 2 times [2024-06-28 01:54:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:17,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799740159] [2024-06-28 01:54:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:19,938 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 01:54:19,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:19,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799740159] [2024-06-28 01:54:19,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799740159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:19,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:19,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:19,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564981686] [2024-06-28 01:54:19,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:19,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:19,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:19,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:19,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:19,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:19,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 193 transitions, 2173 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:19,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:19,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:19,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:22,685 INFO L124 PetriNetUnfolderBase]: 6681/9728 cut-off events. [2024-06-28 01:54:22,685 INFO L125 PetriNetUnfolderBase]: For 93004/93007 co-relation queries the response was YES. [2024-06-28 01:54:22,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50878 conditions, 9728 events. 6681/9728 cut-off events. For 93004/93007 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 54442 event pairs, 1411 based on Foata normal form. 12/9736 useless extension candidates. Maximal degree in co-relation 50820. Up to 6674 conditions per place. [2024-06-28 01:54:22,757 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 203 selfloop transitions, 123 changer transitions 0/332 dead transitions. [2024-06-28 01:54:22,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 332 transitions, 3795 flow [2024-06-28 01:54:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:54:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:54:22,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 301 transitions. [2024-06-28 01:54:22,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822050290135397 [2024-06-28 01:54:22,764 INFO L175 Difference]: Start difference. First operand has 127 places, 193 transitions, 2173 flow. Second operand 11 states and 301 transitions. [2024-06-28 01:54:22,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 332 transitions, 3795 flow [2024-06-28 01:54:22,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 332 transitions, 3578 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:22,901 INFO L231 Difference]: Finished difference. Result has 135 places, 216 transitions, 2632 flow [2024-06-28 01:54:22,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1960, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2632, PETRI_PLACES=135, PETRI_TRANSITIONS=216} [2024-06-28 01:54:22,902 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 84 predicate places. [2024-06-28 01:54:22,902 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 216 transitions, 2632 flow [2024-06-28 01:54:22,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:22,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:22,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:22,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:54:22,903 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:22,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:22,904 INFO L85 PathProgramCache]: Analyzing trace with hash -991882335, now seen corresponding path program 3 times [2024-06-28 01:54:22,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:22,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471058357] [2024-06-28 01:54:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:22,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:25,829 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 01:54:25,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:25,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471058357] [2024-06-28 01:54:25,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471058357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:25,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:25,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:25,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16144733] [2024-06-28 01:54:25,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:25,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:25,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:25,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:25,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:25,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:25,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 216 transitions, 2632 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:25,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:25,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:25,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:28,398 INFO L124 PetriNetUnfolderBase]: 6869/10042 cut-off events. [2024-06-28 01:54:28,399 INFO L125 PetriNetUnfolderBase]: For 122530/122533 co-relation queries the response was YES. [2024-06-28 01:54:28,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57217 conditions, 10042 events. 6869/10042 cut-off events. For 122530/122533 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 56860 event pairs, 1331 based on Foata normal form. 12/10050 useless extension candidates. Maximal degree in co-relation 57155. Up to 6815 conditions per place. [2024-06-28 01:54:28,486 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 188 selfloop transitions, 129 changer transitions 0/323 dead transitions. [2024-06-28 01:54:28,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 323 transitions, 3993 flow [2024-06-28 01:54:28,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:54:28,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:54:28,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 269 transitions. [2024-06-28 01:54:28,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5723404255319149 [2024-06-28 01:54:28,490 INFO L175 Difference]: Start difference. First operand has 135 places, 216 transitions, 2632 flow. Second operand 10 states and 269 transitions. [2024-06-28 01:54:28,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 323 transitions, 3993 flow [2024-06-28 01:54:28,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 323 transitions, 3764 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:28,671 INFO L231 Difference]: Finished difference. Result has 142 places, 227 transitions, 2938 flow [2024-06-28 01:54:28,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2938, PETRI_PLACES=142, PETRI_TRANSITIONS=227} [2024-06-28 01:54:28,672 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 91 predicate places. [2024-06-28 01:54:28,672 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 227 transitions, 2938 flow [2024-06-28 01:54:28,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:28,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:28,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:28,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:54:28,672 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:28,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1417672019, now seen corresponding path program 4 times [2024-06-28 01:54:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:28,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143663028] [2024-06-28 01:54:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:28,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:31,353 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 01:54:31,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:31,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143663028] [2024-06-28 01:54:31,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143663028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:31,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:31,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:31,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418915736] [2024-06-28 01:54:31,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:31,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:31,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:31,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 227 transitions, 2938 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:31,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:31,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:31,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:33,817 INFO L124 PetriNetUnfolderBase]: 7181/10487 cut-off events. [2024-06-28 01:54:33,818 INFO L125 PetriNetUnfolderBase]: For 135859/135865 co-relation queries the response was YES. [2024-06-28 01:54:33,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61970 conditions, 10487 events. 7181/10487 cut-off events. For 135859/135865 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 59649 event pairs, 1455 based on Foata normal form. 11/10489 useless extension candidates. Maximal degree in co-relation 61904. Up to 8532 conditions per place. [2024-06-28 01:54:33,904 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 226 selfloop transitions, 87 changer transitions 0/319 dead transitions. [2024-06-28 01:54:33,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 319 transitions, 4268 flow [2024-06-28 01:54:33,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:54:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:54:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 01:54:33,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:54:33,905 INFO L175 Difference]: Start difference. First operand has 142 places, 227 transitions, 2938 flow. Second operand 9 states and 234 transitions. [2024-06-28 01:54:33,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 319 transitions, 4268 flow [2024-06-28 01:54:34,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 319 transitions, 3991 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:34,146 INFO L231 Difference]: Finished difference. Result has 146 places, 239 transitions, 3097 flow [2024-06-28 01:54:34,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3097, PETRI_PLACES=146, PETRI_TRANSITIONS=239} [2024-06-28 01:54:34,147 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 95 predicate places. [2024-06-28 01:54:34,147 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 239 transitions, 3097 flow [2024-06-28 01:54:34,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:34,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:34,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:34,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:54:34,147 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:34,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:34,148 INFO L85 PathProgramCache]: Analyzing trace with hash 204221909, now seen corresponding path program 5 times [2024-06-28 01:54:34,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:34,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621762931] [2024-06-28 01:54:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:34,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:37,446 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 01:54:37,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:37,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621762931] [2024-06-28 01:54:37,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621762931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:37,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:37,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:37,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87490791] [2024-06-28 01:54:37,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:37,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:37,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:37,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:37,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:37,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:37,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 239 transitions, 3097 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:37,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:37,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:37,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:40,291 INFO L124 PetriNetUnfolderBase]: 7161/10459 cut-off events. [2024-06-28 01:54:40,291 INFO L125 PetriNetUnfolderBase]: For 138889/138895 co-relation queries the response was YES. [2024-06-28 01:54:40,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60954 conditions, 10459 events. 7161/10459 cut-off events. For 138889/138895 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 59524 event pairs, 1494 based on Foata normal form. 11/10461 useless extension candidates. Maximal degree in co-relation 60886. Up to 8521 conditions per place. [2024-06-28 01:54:40,370 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 234 selfloop transitions, 93 changer transitions 0/333 dead transitions. [2024-06-28 01:54:40,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 333 transitions, 4266 flow [2024-06-28 01:54:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:54:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:54:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-06-28 01:54:40,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:54:40,371 INFO L175 Difference]: Start difference. First operand has 146 places, 239 transitions, 3097 flow. Second operand 11 states and 275 transitions. [2024-06-28 01:54:40,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 333 transitions, 4266 flow [2024-06-28 01:54:40,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 333 transitions, 3979 flow, removed 86 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:40,630 INFO L231 Difference]: Finished difference. Result has 153 places, 241 transitions, 3031 flow [2024-06-28 01:54:40,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2811, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3031, PETRI_PLACES=153, PETRI_TRANSITIONS=241} [2024-06-28 01:54:40,631 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 102 predicate places. [2024-06-28 01:54:40,631 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 241 transitions, 3031 flow [2024-06-28 01:54:40,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:40,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:40,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:40,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:54:40,632 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:40,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash 211579139, now seen corresponding path program 6 times [2024-06-28 01:54:40,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:40,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322131049] [2024-06-28 01:54:40,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:40,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:43,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:43,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322131049] [2024-06-28 01:54:43,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322131049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:43,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:43,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:43,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514469287] [2024-06-28 01:54:43,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:43,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:43,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:43,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:43,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:43,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:43,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 241 transitions, 3031 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:43,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:43,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:43,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:46,082 INFO L124 PetriNetUnfolderBase]: 7161/10427 cut-off events. [2024-06-28 01:54:46,082 INFO L125 PetriNetUnfolderBase]: For 127050/127056 co-relation queries the response was YES. [2024-06-28 01:54:46,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60204 conditions, 10427 events. 7161/10427 cut-off events. For 127050/127056 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 58419 event pairs, 1481 based on Foata normal form. 5/10423 useless extension candidates. Maximal degree in co-relation 60133. Up to 9121 conditions per place. [2024-06-28 01:54:46,156 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 268 selfloop transitions, 70 changer transitions 0/344 dead transitions. [2024-06-28 01:54:46,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 344 transitions, 4476 flow [2024-06-28 01:54:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:46,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:54:46,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 01:54:46,157 INFO L175 Difference]: Start difference. First operand has 153 places, 241 transitions, 3031 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:54:46,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 344 transitions, 4476 flow [2024-06-28 01:54:46,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 344 transitions, 4248 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:54:46,352 INFO L231 Difference]: Finished difference. Result has 156 places, 271 transitions, 3463 flow [2024-06-28 01:54:46,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3463, PETRI_PLACES=156, PETRI_TRANSITIONS=271} [2024-06-28 01:54:46,352 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 105 predicate places. [2024-06-28 01:54:46,352 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 271 transitions, 3463 flow [2024-06-28 01:54:46,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:46,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:46,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:46,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:54:46,353 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:46,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:46,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1153576967, now seen corresponding path program 1 times [2024-06-28 01:54:46,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:46,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588971825] [2024-06-28 01:54:46,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:46,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:49,507 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 01:54:49,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:49,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588971825] [2024-06-28 01:54:49,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588971825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:49,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:49,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:49,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941549031] [2024-06-28 01:54:49,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:49,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:49,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:49,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:49,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:49,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:49,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 271 transitions, 3463 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:49,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:49,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:49,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:52,215 INFO L124 PetriNetUnfolderBase]: 7350/10790 cut-off events. [2024-06-28 01:54:52,215 INFO L125 PetriNetUnfolderBase]: For 147088/147088 co-relation queries the response was YES. [2024-06-28 01:54:52,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64278 conditions, 10790 events. 7350/10790 cut-off events. For 147088/147088 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 62034 event pairs, 1217 based on Foata normal form. 6/10793 useless extension candidates. Maximal degree in co-relation 64203. Up to 9709 conditions per place. [2024-06-28 01:54:52,327 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 304 selfloop transitions, 49 changer transitions 0/359 dead transitions. [2024-06-28 01:54:52,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 359 transitions, 4790 flow [2024-06-28 01:54:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:54:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:54:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-28 01:54:52,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-28 01:54:52,328 INFO L175 Difference]: Start difference. First operand has 156 places, 271 transitions, 3463 flow. Second operand 9 states and 231 transitions. [2024-06-28 01:54:52,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 359 transitions, 4790 flow [2024-06-28 01:54:52,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 359 transitions, 4751 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 01:54:52,791 INFO L231 Difference]: Finished difference. Result has 163 places, 275 transitions, 3633 flow [2024-06-28 01:54:52,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3633, PETRI_PLACES=163, PETRI_TRANSITIONS=275} [2024-06-28 01:54:52,792 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 112 predicate places. [2024-06-28 01:54:52,792 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 275 transitions, 3633 flow [2024-06-28 01:54:52,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:52,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:52,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:52,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:54:52,792 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:52,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:52,793 INFO L85 PathProgramCache]: Analyzing trace with hash -688226555, now seen corresponding path program 2 times [2024-06-28 01:54:52,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:52,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958037250] [2024-06-28 01:54:52,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:52,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:55,847 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 01:54:55,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:55,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958037250] [2024-06-28 01:54:55,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958037250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:55,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:55,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:55,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542487432] [2024-06-28 01:54:55,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:55,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:55,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:55,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:55,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:55,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:55,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 275 transitions, 3633 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:55,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:55,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:55,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:58,607 INFO L124 PetriNetUnfolderBase]: 7337/10771 cut-off events. [2024-06-28 01:54:58,607 INFO L125 PetriNetUnfolderBase]: For 154714/154714 co-relation queries the response was YES. [2024-06-28 01:54:58,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64999 conditions, 10771 events. 7337/10771 cut-off events. For 154714/154714 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 61784 event pairs, 1622 based on Foata normal form. 6/10774 useless extension candidates. Maximal degree in co-relation 64921. Up to 9921 conditions per place. [2024-06-28 01:54:58,707 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 293 selfloop transitions, 45 changer transitions 0/344 dead transitions. [2024-06-28 01:54:58,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 344 transitions, 4660 flow [2024-06-28 01:54:58,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:58,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:58,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:54:58,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-28 01:54:58,709 INFO L175 Difference]: Start difference. First operand has 163 places, 275 transitions, 3633 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:54:58,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 344 transitions, 4660 flow [2024-06-28 01:54:59,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 344 transitions, 4549 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:59,027 INFO L231 Difference]: Finished difference. Result has 166 places, 275 transitions, 3622 flow [2024-06-28 01:54:59,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3522, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3622, PETRI_PLACES=166, PETRI_TRANSITIONS=275} [2024-06-28 01:54:59,028 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 115 predicate places. [2024-06-28 01:54:59,028 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 275 transitions, 3622 flow [2024-06-28 01:54:59,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:59,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:59,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:59,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:54:59,028 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:54:59,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:59,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1099158941, now seen corresponding path program 3 times [2024-06-28 01:54:59,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:59,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198719699] [2024-06-28 01:54:59,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:59,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:01,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:01,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198719699] [2024-06-28 01:55:01,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198719699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:01,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:01,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:01,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796662647] [2024-06-28 01:55:01,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:01,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:01,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:01,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:01,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:01,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:01,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 275 transitions, 3622 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:01,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:01,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:01,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:04,911 INFO L124 PetriNetUnfolderBase]: 7425/10838 cut-off events. [2024-06-28 01:55:04,912 INFO L125 PetriNetUnfolderBase]: For 160188/160191 co-relation queries the response was YES. [2024-06-28 01:55:04,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65952 conditions, 10838 events. 7425/10838 cut-off events. For 160188/160191 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 61785 event pairs, 1622 based on Foata normal form. 8/10842 useless extension candidates. Maximal degree in co-relation 65872. Up to 9619 conditions per place. [2024-06-28 01:55:05,002 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 261 selfloop transitions, 79 changer transitions 0/346 dead transitions. [2024-06-28 01:55:05,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 346 transitions, 4752 flow [2024-06-28 01:55:05,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:55:05,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-28 01:55:05,004 INFO L175 Difference]: Start difference. First operand has 166 places, 275 transitions, 3622 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:55:05,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 346 transitions, 4752 flow [2024-06-28 01:55:05,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 346 transitions, 4655 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:55:05,306 INFO L231 Difference]: Finished difference. Result has 167 places, 277 transitions, 3749 flow [2024-06-28 01:55:05,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3525, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3749, PETRI_PLACES=167, PETRI_TRANSITIONS=277} [2024-06-28 01:55:05,306 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 116 predicate places. [2024-06-28 01:55:05,306 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 277 transitions, 3749 flow [2024-06-28 01:55:05,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:05,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:05,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:05,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:55:05,307 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:05,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:05,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1098974243, now seen corresponding path program 1 times [2024-06-28 01:55:05,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:05,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351991210] [2024-06-28 01:55:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:09,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:09,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:09,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351991210] [2024-06-28 01:55:09,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351991210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:09,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:09,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:09,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824650819] [2024-06-28 01:55:09,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:09,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:09,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:09,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:09,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:09,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:09,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 277 transitions, 3749 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:09,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:09,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:09,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:12,489 INFO L124 PetriNetUnfolderBase]: 7741/11200 cut-off events. [2024-06-28 01:55:12,490 INFO L125 PetriNetUnfolderBase]: For 182132/182135 co-relation queries the response was YES. [2024-06-28 01:55:12,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68981 conditions, 11200 events. 7741/11200 cut-off events. For 182132/182135 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 63112 event pairs, 1523 based on Foata normal form. 20/11216 useless extension candidates. Maximal degree in co-relation 68900. Up to 9474 conditions per place. [2024-06-28 01:55:12,599 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 273 selfloop transitions, 95 changer transitions 0/374 dead transitions. [2024-06-28 01:55:12,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 374 transitions, 5019 flow [2024-06-28 01:55:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:55:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:55:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-28 01:55:12,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617021276595745 [2024-06-28 01:55:12,601 INFO L175 Difference]: Start difference. First operand has 167 places, 277 transitions, 3749 flow. Second operand 10 states and 264 transitions. [2024-06-28 01:55:12,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 374 transitions, 5019 flow [2024-06-28 01:55:13,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 374 transitions, 4833 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:55:13,072 INFO L231 Difference]: Finished difference. Result has 171 places, 281 transitions, 3868 flow [2024-06-28 01:55:13,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3563, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3868, PETRI_PLACES=171, PETRI_TRANSITIONS=281} [2024-06-28 01:55:13,073 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 120 predicate places. [2024-06-28 01:55:13,073 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 281 transitions, 3868 flow [2024-06-28 01:55:13,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:13,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:13,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:13,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:55:13,073 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:13,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash 884284675, now seen corresponding path program 4 times [2024-06-28 01:55:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:13,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622673983] [2024-06-28 01:55:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:15,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:15,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622673983] [2024-06-28 01:55:15,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622673983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:15,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:15,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:15,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316325210] [2024-06-28 01:55:15,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:15,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:15,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:15,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:15,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:15,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 281 transitions, 3868 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:15,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:15,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:15,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:18,981 INFO L124 PetriNetUnfolderBase]: 7728/11358 cut-off events. [2024-06-28 01:55:18,981 INFO L125 PetriNetUnfolderBase]: For 185185/185191 co-relation queries the response was YES. [2024-06-28 01:55:19,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70373 conditions, 11358 events. 7728/11358 cut-off events. For 185185/185191 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 65587 event pairs, 1723 based on Foata normal form. 7/11356 useless extension candidates. Maximal degree in co-relation 70291. Up to 10064 conditions per place. [2024-06-28 01:55:19,084 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 267 selfloop transitions, 75 changer transitions 0/348 dead transitions. [2024-06-28 01:55:19,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 348 transitions, 4997 flow [2024-06-28 01:55:19,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:19,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:19,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:55:19,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 01:55:19,086 INFO L175 Difference]: Start difference. First operand has 171 places, 281 transitions, 3868 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:55:19,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 348 transitions, 4997 flow [2024-06-28 01:55:19,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 348 transitions, 4736 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 01:55:19,451 INFO L231 Difference]: Finished difference. Result has 171 places, 283 transitions, 3829 flow [2024-06-28 01:55:19,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3829, PETRI_PLACES=171, PETRI_TRANSITIONS=283} [2024-06-28 01:55:19,452 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 120 predicate places. [2024-06-28 01:55:19,452 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 283 transitions, 3829 flow [2024-06-28 01:55:19,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:19,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:19,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:19,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:55:19,452 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:19,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:19,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2030742537, now seen corresponding path program 2 times [2024-06-28 01:55:19,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:19,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430302873] [2024-06-28 01:55:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:19,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:22,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:22,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430302873] [2024-06-28 01:55:22,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430302873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:22,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:22,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:22,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102096051] [2024-06-28 01:55:22,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:22,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:22,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:22,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:22,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:22,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:22,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 283 transitions, 3829 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:22,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:22,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:22,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:25,865 INFO L124 PetriNetUnfolderBase]: 7778/11436 cut-off events. [2024-06-28 01:55:25,865 INFO L125 PetriNetUnfolderBase]: For 189352/189361 co-relation queries the response was YES. [2024-06-28 01:55:25,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70115 conditions, 11436 events. 7778/11436 cut-off events. For 189352/189361 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 65913 event pairs, 1533 based on Foata normal form. 10/11438 useless extension candidates. Maximal degree in co-relation 70032. Up to 10471 conditions per place. [2024-06-28 01:55:25,984 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 299 selfloop transitions, 47 changer transitions 0/352 dead transitions. [2024-06-28 01:55:25,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 352 transitions, 4899 flow [2024-06-28 01:55:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:25,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:55:25,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 01:55:25,991 INFO L175 Difference]: Start difference. First operand has 171 places, 283 transitions, 3829 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:55:25,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 352 transitions, 4899 flow [2024-06-28 01:55:26,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 352 transitions, 4729 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:55:26,351 INFO L231 Difference]: Finished difference. Result has 174 places, 285 transitions, 3801 flow [2024-06-28 01:55:26,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3660, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3801, PETRI_PLACES=174, PETRI_TRANSITIONS=285} [2024-06-28 01:55:26,352 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 123 predicate places. [2024-06-28 01:55:26,352 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 285 transitions, 3801 flow [2024-06-28 01:55:26,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:26,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:26,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:26,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:55:26,352 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:26,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2036092969, now seen corresponding path program 3 times [2024-06-28 01:55:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:26,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869744815] [2024-06-28 01:55:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:29,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:29,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869744815] [2024-06-28 01:55:29,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869744815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:29,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:29,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:29,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561049626] [2024-06-28 01:55:29,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:29,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:29,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:29,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:29,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:29,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 285 transitions, 3801 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:29,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:29,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:29,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:32,791 INFO L124 PetriNetUnfolderBase]: 8094/11846 cut-off events. [2024-06-28 01:55:32,792 INFO L125 PetriNetUnfolderBase]: For 207899/207908 co-relation queries the response was YES. [2024-06-28 01:55:32,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72858 conditions, 11846 events. 8094/11846 cut-off events. For 207899/207908 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 68236 event pairs, 1652 based on Foata normal form. 24/11862 useless extension candidates. Maximal degree in co-relation 72774. Up to 10399 conditions per place. [2024-06-28 01:55:32,910 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 280 selfloop transitions, 80 changer transitions 0/366 dead transitions. [2024-06-28 01:55:32,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 366 transitions, 5005 flow [2024-06-28 01:55:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:55:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:55:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 01:55:32,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541371158392435 [2024-06-28 01:55:32,912 INFO L175 Difference]: Start difference. First operand has 174 places, 285 transitions, 3801 flow. Second operand 9 states and 229 transitions. [2024-06-28 01:55:32,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 366 transitions, 5005 flow [2024-06-28 01:55:33,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 366 transitions, 4902 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:55:33,294 INFO L231 Difference]: Finished difference. Result has 177 places, 289 transitions, 3989 flow [2024-06-28 01:55:33,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3700, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3989, PETRI_PLACES=177, PETRI_TRANSITIONS=289} [2024-06-28 01:55:33,295 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 126 predicate places. [2024-06-28 01:55:33,295 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 289 transitions, 3989 flow [2024-06-28 01:55:33,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:33,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:33,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:33,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:55:33,296 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:33,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2022402297, now seen corresponding path program 4 times [2024-06-28 01:55:33,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:33,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619683629] [2024-06-28 01:55:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:33,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:36,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:36,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619683629] [2024-06-28 01:55:36,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619683629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:36,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:36,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:36,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063060580] [2024-06-28 01:55:36,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:36,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:36,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:36,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:36,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:36,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:36,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 289 transitions, 3989 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:36,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:36,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:36,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:39,375 INFO L124 PetriNetUnfolderBase]: 8094/11908 cut-off events. [2024-06-28 01:55:39,375 INFO L125 PetriNetUnfolderBase]: For 215244/215253 co-relation queries the response was YES. [2024-06-28 01:55:39,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74419 conditions, 11908 events. 8094/11908 cut-off events. For 215244/215253 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 68963 event pairs, 1517 based on Foata normal form. 10/11910 useless extension candidates. Maximal degree in co-relation 74334. Up to 10733 conditions per place. [2024-06-28 01:55:39,507 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 304 selfloop transitions, 56 changer transitions 0/366 dead transitions. [2024-06-28 01:55:39,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 366 transitions, 5264 flow [2024-06-28 01:55:39,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:39,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:39,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:55:39,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 01:55:39,508 INFO L175 Difference]: Start difference. First operand has 177 places, 289 transitions, 3989 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:55:39,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 366 transitions, 5264 flow [2024-06-28 01:55:40,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 366 transitions, 4979 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-28 01:55:40,059 INFO L231 Difference]: Finished difference. Result has 179 places, 296 transitions, 4010 flow [2024-06-28 01:55:40,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4010, PETRI_PLACES=179, PETRI_TRANSITIONS=296} [2024-06-28 01:55:40,060 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 128 predicate places. [2024-06-28 01:55:40,060 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 296 transitions, 4010 flow [2024-06-28 01:55:40,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:40,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:40,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:40,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:55:40,061 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:40,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:40,061 INFO L85 PathProgramCache]: Analyzing trace with hash 166215927, now seen corresponding path program 1 times [2024-06-28 01:55:40,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:40,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687208725] [2024-06-28 01:55:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:40,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:42,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:42,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687208725] [2024-06-28 01:55:42,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687208725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:42,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:42,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:55:42,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150623514] [2024-06-28 01:55:42,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:42,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:55:42,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:42,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:55:42,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:55:42,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:55:42,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 296 transitions, 4010 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:42,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:42,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:55:42,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:44,487 INFO L124 PetriNetUnfolderBase]: 7303/11169 cut-off events. [2024-06-28 01:55:44,488 INFO L125 PetriNetUnfolderBase]: For 209799/209904 co-relation queries the response was YES. [2024-06-28 01:55:44,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68916 conditions, 11169 events. 7303/11169 cut-off events. For 209799/209904 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 68569 event pairs, 1989 based on Foata normal form. 31/11060 useless extension candidates. Maximal degree in co-relation 68829. Up to 9950 conditions per place. [2024-06-28 01:55:44,594 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 262 selfloop transitions, 14 changer transitions 0/318 dead transitions. [2024-06-28 01:55:44,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 318 transitions, 4678 flow [2024-06-28 01:55:44,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:55:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:55:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-28 01:55:44,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-06-28 01:55:44,595 INFO L175 Difference]: Start difference. First operand has 179 places, 296 transitions, 4010 flow. Second operand 5 states and 117 transitions. [2024-06-28 01:55:44,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 318 transitions, 4678 flow [2024-06-28 01:55:44,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 318 transitions, 4596 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:44,973 INFO L231 Difference]: Finished difference. Result has 181 places, 300 transitions, 4041 flow [2024-06-28 01:55:44,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3928, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4041, PETRI_PLACES=181, PETRI_TRANSITIONS=300} [2024-06-28 01:55:44,974 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 130 predicate places. [2024-06-28 01:55:44,974 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 300 transitions, 4041 flow [2024-06-28 01:55:44,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:44,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:44,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:44,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:55:44,974 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:44,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash 910718008, now seen corresponding path program 1 times [2024-06-28 01:55:44,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:44,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384327817] [2024-06-28 01:55:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:48,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:48,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384327817] [2024-06-28 01:55:48,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384327817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:48,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:48,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:48,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397310132] [2024-06-28 01:55:48,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:48,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:48,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:48,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:48,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:48,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:48,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 300 transitions, 4041 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:48,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:48,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:48,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:52,981 INFO L124 PetriNetUnfolderBase]: 12280/18259 cut-off events. [2024-06-28 01:55:52,982 INFO L125 PetriNetUnfolderBase]: For 419160/419160 co-relation queries the response was YES. [2024-06-28 01:55:53,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112521 conditions, 18259 events. 12280/18259 cut-off events. For 419160/419160 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 115194 event pairs, 2171 based on Foata normal form. 64/18316 useless extension candidates. Maximal degree in co-relation 112432. Up to 11633 conditions per place. [2024-06-28 01:55:53,197 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 403 selfloop transitions, 72 changer transitions 0/481 dead transitions. [2024-06-28 01:55:53,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 481 transitions, 6752 flow [2024-06-28 01:55:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:55:53,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:55:53,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 339 transitions. [2024-06-28 01:55:53,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5548281505728314 [2024-06-28 01:55:53,198 INFO L175 Difference]: Start difference. First operand has 181 places, 300 transitions, 4041 flow. Second operand 13 states and 339 transitions. [2024-06-28 01:55:53,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 481 transitions, 6752 flow [2024-06-28 01:55:54,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 481 transitions, 6667 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:54,167 INFO L231 Difference]: Finished difference. Result has 196 places, 339 transitions, 4898 flow [2024-06-28 01:55:54,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3956, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4898, PETRI_PLACES=196, PETRI_TRANSITIONS=339} [2024-06-28 01:55:54,168 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 145 predicate places. [2024-06-28 01:55:54,168 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 339 transitions, 4898 flow [2024-06-28 01:55:54,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:54,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:54,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:54,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:55:54,168 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:54,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:54,169 INFO L85 PathProgramCache]: Analyzing trace with hash 999431638, now seen corresponding path program 2 times [2024-06-28 01:55:54,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:54,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100888147] [2024-06-28 01:55:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:54,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:57,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:57,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100888147] [2024-06-28 01:55:57,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100888147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:57,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:57,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:57,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217303593] [2024-06-28 01:55:57,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:57,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:57,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:57,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:57,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:57,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:57,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 339 transitions, 4898 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:57,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:57,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:57,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:02,844 INFO L124 PetriNetUnfolderBase]: 13319/19848 cut-off events. [2024-06-28 01:56:02,844 INFO L125 PetriNetUnfolderBase]: For 491327/491327 co-relation queries the response was YES. [2024-06-28 01:56:03,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124986 conditions, 19848 events. 13319/19848 cut-off events. For 491327/491327 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 127427 event pairs, 3649 based on Foata normal form. 74/19915 useless extension candidates. Maximal degree in co-relation 124891. Up to 16924 conditions per place. [2024-06-28 01:56:03,097 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 375 selfloop transitions, 68 changer transitions 0/449 dead transitions. [2024-06-28 01:56:03,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 449 transitions, 6603 flow [2024-06-28 01:56:03,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:56:03,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:56:03,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 297 transitions. [2024-06-28 01:56:03,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-28 01:56:03,099 INFO L175 Difference]: Start difference. First operand has 196 places, 339 transitions, 4898 flow. Second operand 12 states and 297 transitions. [2024-06-28 01:56:03,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 449 transitions, 6603 flow [2024-06-28 01:56:04,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 449 transitions, 6342 flow, removed 87 selfloop flow, removed 5 redundant places. [2024-06-28 01:56:04,745 INFO L231 Difference]: Finished difference. Result has 205 places, 346 transitions, 5005 flow [2024-06-28 01:56:04,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5005, PETRI_PLACES=205, PETRI_TRANSITIONS=346} [2024-06-28 01:56:04,745 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 154 predicate places. [2024-06-28 01:56:04,745 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 346 transitions, 5005 flow [2024-06-28 01:56:04,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:04,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:04,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:04,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:56:04,746 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:04,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:04,746 INFO L85 PathProgramCache]: Analyzing trace with hash 920061730, now seen corresponding path program 3 times [2024-06-28 01:56:04,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:04,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256539698] [2024-06-28 01:56:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:04,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:09,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:09,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256539698] [2024-06-28 01:56:09,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256539698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:09,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:09,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:09,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989204621] [2024-06-28 01:56:09,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:09,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:09,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:09,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:09,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:09,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:56:09,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 346 transitions, 5005 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:09,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:09,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:56:09,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:15,525 INFO L124 PetriNetUnfolderBase]: 16387/24516 cut-off events. [2024-06-28 01:56:15,526 INFO L125 PetriNetUnfolderBase]: For 620600/620600 co-relation queries the response was YES. [2024-06-28 01:56:15,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147449 conditions, 24516 events. 16387/24516 cut-off events. For 620600/620600 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 164455 event pairs, 3631 based on Foata normal form. 128/24641 useless extension candidates. Maximal degree in co-relation 147351. Up to 14378 conditions per place. [2024-06-28 01:56:15,819 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 367 selfloop transitions, 98 changer transitions 0/471 dead transitions. [2024-06-28 01:56:15,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 471 transitions, 7109 flow [2024-06-28 01:56:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:56:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:56:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 292 transitions. [2024-06-28 01:56:15,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647969052224371 [2024-06-28 01:56:15,822 INFO L175 Difference]: Start difference. First operand has 205 places, 346 transitions, 5005 flow. Second operand 11 states and 292 transitions. [2024-06-28 01:56:15,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 471 transitions, 7109 flow [2024-06-28 01:56:17,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 471 transitions, 6913 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-28 01:56:17,356 INFO L231 Difference]: Finished difference. Result has 208 places, 357 transitions, 5422 flow [2024-06-28 01:56:17,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4809, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5422, PETRI_PLACES=208, PETRI_TRANSITIONS=357} [2024-06-28 01:56:17,357 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 157 predicate places. [2024-06-28 01:56:17,357 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 357 transitions, 5422 flow [2024-06-28 01:56:17,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:17,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:17,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:17,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:56:17,357 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:17,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:17,357 INFO L85 PathProgramCache]: Analyzing trace with hash 291322764, now seen corresponding path program 4 times [2024-06-28 01:56:17,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:17,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316231159] [2024-06-28 01:56:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:17,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:21,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:21,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316231159] [2024-06-28 01:56:21,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316231159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:21,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:21,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131819148] [2024-06-28 01:56:21,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:21,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:21,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:21,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:56:21,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 357 transitions, 5422 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:21,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:21,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:56:21,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:28,516 INFO L124 PetriNetUnfolderBase]: 17527/26195 cut-off events. [2024-06-28 01:56:28,516 INFO L125 PetriNetUnfolderBase]: For 667399/667402 co-relation queries the response was YES. [2024-06-28 01:56:28,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158124 conditions, 26195 events. 17527/26195 cut-off events. For 667399/667402 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 177873 event pairs, 5099 based on Foata normal form. 76/26267 useless extension candidates. Maximal degree in co-relation 158024. Up to 20521 conditions per place. [2024-06-28 01:56:28,836 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 270 selfloop transitions, 193 changer transitions 0/469 dead transitions. [2024-06-28 01:56:28,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 469 transitions, 7126 flow [2024-06-28 01:56:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:56:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:56:28,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 299 transitions. [2024-06-28 01:56:28,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5783365570599613 [2024-06-28 01:56:28,838 INFO L175 Difference]: Start difference. First operand has 208 places, 357 transitions, 5422 flow. Second operand 11 states and 299 transitions. [2024-06-28 01:56:28,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 469 transitions, 7126 flow [2024-06-28 01:56:30,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 469 transitions, 6818 flow, removed 99 selfloop flow, removed 7 redundant places. [2024-06-28 01:56:30,602 INFO L231 Difference]: Finished difference. Result has 212 places, 360 transitions, 5646 flow [2024-06-28 01:56:30,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5114, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5646, PETRI_PLACES=212, PETRI_TRANSITIONS=360} [2024-06-28 01:56:30,603 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 161 predicate places. [2024-06-28 01:56:30,603 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 360 transitions, 5646 flow [2024-06-28 01:56:30,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:30,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:30,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:30,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:56:30,603 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:30,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash 285816234, now seen corresponding path program 5 times [2024-06-28 01:56:30,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:30,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086865827] [2024-06-28 01:56:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:30,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:34,231 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 01:56:34,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:34,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086865827] [2024-06-28 01:56:34,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086865827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:34,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:34,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:34,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219458305] [2024-06-28 01:56:34,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:34,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:34,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:34,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:34,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:34,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:56:34,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 360 transitions, 5646 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:34,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:34,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:56:34,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand