./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe002_power.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_power.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_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe002_power.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 01:52:01,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:52:01,700 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:52:01,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:52:01,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:52:01,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:52:01,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:52:01,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:52:01,745 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:52:01,745 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:52:01,746 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:52:01,746 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:52:01,747 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:52:01,747 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:52:01,748 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:52:01,748 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:52:01,748 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:52:01,749 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:52:01,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:52:01,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:52:01,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:52:01,750 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:52:01,750 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:52:01,750 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:52:01,750 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:52:01,751 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:52:01,751 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:52:01,751 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:52:01,751 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:52:01,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:52:01,752 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:52:01,752 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:52:01,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:52:01,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:52:01,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:52:01,753 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:52:01,753 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:52:01,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:52:01,753 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:52:01,753 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:52:01,754 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:52:01,754 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:52:01,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:52:01,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:52:01,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:52:02,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:52:02,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:52:02,005 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:52:02,005 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:52:02,006 INFO L431 ainManager$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_power.oepc.yml/witness.yml [2024-06-28 01:52:02,227 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:52:02,228 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:52:02,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_power.oepc.i [2024-06-28 01:52:03,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:52:03,649 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:52:03,652 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_power.oepc.i [2024-06-28 01:52:03,673 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37ddc154/38545ad1a7644472b657e58469ede6bd/FLAGb2b093d14 [2024-06-28 01:52:03,686 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37ddc154/38545ad1a7644472b657e58469ede6bd [2024-06-28 01:52:03,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:52:03,688 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:52:03,689 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:52:03,689 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:52:03,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:52:03,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:52:02" (1/2) ... [2024-06-28 01:52:03,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1421a530 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:52:03, skipping insertion in model container [2024-06-28 01:52:03,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:52:02" (1/2) ... [2024-06-28 01:52:03,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c40d010 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:52:03, skipping insertion in model container [2024-06-28 01:52:03,697 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:52:03" (2/2) ... [2024-06-28 01:52:03,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1421a530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:03, skipping insertion in model container [2024-06-28 01:52:03,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:52:03" (2/2) ... [2024-06-28 01:52:03,698 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:52:03,811 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:52:03,813 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$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:52:03,813 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$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 01:52:03,813 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ((((((((((((((((((((((((((((((((((((! 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 01:52:03,813 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:52:03,814 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-28 01:52:03,854 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:52:04,051 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_power.oepc.i[995,1008] [2024-06-28 01:52:04,276 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:52:04,286 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:52:04,315 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_power.oepc.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:52:04,456 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:52:04,489 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:52:04,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04 WrapperNode [2024-06-28 01:52:04,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:52:04,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:52:04,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:52:04,492 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:52:04,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (1/1) ... [2024-06-28 01:52:04,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (1/1) ... [2024-06-28 01:52:04,595 INFO L138 Inliner]: procedures = 175, calls = 108, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 277 [2024-06-28 01:52:04,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:52:04,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:52:04,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:52:04,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:52:04,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (1/1) ... [2024-06-28 01:52:04,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (1/1) ... [2024-06-28 01:52:04,609 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (1/1) ... [2024-06-28 01:52:04,638 INFO L175 MemorySlicer]: Split 68 memory accesses to 2 slices as follows [2, 66]. 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 01:52:04,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (1/1) ... [2024-06-28 01:52:04,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (1/1) ... [2024-06-28 01:52:04,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (1/1) ... [2024-06-28 01:52:04,653 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (1/1) ... [2024-06-28 01:52:04,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (1/1) ... [2024-06-28 01:52:04,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (1/1) ... [2024-06-28 01:52:04,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:52:04,662 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:52:04,662 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:52:04,662 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:52:04,663 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (1/1) ... [2024-06-28 01:52:04,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:52:04,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:52:04,684 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 01:52:04,724 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 01:52:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:52:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:52:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:52:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:52:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:52:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:52:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:52:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:52:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:52:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:52:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:52:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:52:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:52:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:52:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:52:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:52:04,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:52:04,742 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 01:52:04,888 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:52:04,889 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:52:05,452 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:52:05,452 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:52:06,006 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:52:06,007 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:52:06,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:52:06 BoogieIcfgContainer [2024-06-28 01:52:06,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:52:06,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:52:06,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:52:06,013 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:52:06,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:52:02" (1/4) ... [2024-06-28 01:52:06,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4530fd4f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:52:06, skipping insertion in model container [2024-06-28 01:52:06,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:52:03" (2/4) ... [2024-06-28 01:52:06,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4530fd4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:52:06, skipping insertion in model container [2024-06-28 01:52:06,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:04" (3/4) ... [2024-06-28 01:52:06,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4530fd4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:52:06, skipping insertion in model container [2024-06-28 01:52:06,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:52:06" (4/4) ... [2024-06-28 01:52:06,016 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_power.oepc.i [2024-06-28 01:52:06,032 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:52:06,032 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:52:06,032 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:52:06,093 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:52:06,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:52:06,188 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:52:06,188 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:52:06,192 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 66 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 01:52:06,193 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:52:06,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-28 01:52:06,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:52:06,249 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;@6f2c5a4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:52:06,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:52:06,253 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:52:06,253 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:52:06,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:52:06,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:06,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:52:06,264 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 01:52:06,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:06,268 INFO L85 PathProgramCache]: Analyzing trace with hash 980900516, now seen corresponding path program 1 times [2024-06-28 01:52:06,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:06,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407658122] [2024-06-28 01:52:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:06,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:08,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:08,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407658122] [2024-06-28 01:52:08,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407658122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:08,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:08,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:52:08,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374100565] [2024-06-28 01:52:08,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:08,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:52:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:52:08,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:52:08,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:52:08,076 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 01:52:08,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:08,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:52:08,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:09,122 INFO L124 PetriNetUnfolderBase]: 3185/4950 cut-off events. [2024-06-28 01:52:09,123 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-28 01:52:09,130 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 29060 event pairs, 1785 based on Foata normal form. 0/4769 useless extension candidates. Maximal degree in co-relation 9619. Up to 4593 conditions per place. [2024-06-28 01:52:09,149 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 46 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:52:09,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 235 flow [2024-06-28 01:52:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:52:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:52:09,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-06-28 01:52:09,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-28 01:52:09,159 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 90 transitions. [2024-06-28 01:52:09,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 235 flow [2024-06-28 01:52:09,162 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 01:52:09,163 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 125 flow [2024-06-28 01:52:09,165 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 01:52:09,167 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-28 01:52:09,167 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 125 flow [2024-06-28 01:52:09,168 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 01:52:09,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:09,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:09,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:52:09,168 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 01:52:09,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:09,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2048780913, now seen corresponding path program 1 times [2024-06-28 01:52:09,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:09,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143925527] [2024-06-28 01:52:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:09,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:11,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:11,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143925527] [2024-06-28 01:52:11,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143925527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:11,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:11,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:52:11,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58905005] [2024-06-28 01:52:11,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:11,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:52:11,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:11,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:52:11,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:52:11,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:52:11,434 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 01:52:11,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:11,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:52:11,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:12,521 INFO L124 PetriNetUnfolderBase]: 3176/4725 cut-off events. [2024-06-28 01:52:12,522 INFO L125 PetriNetUnfolderBase]: For 799/799 co-relation queries the response was YES. [2024-06-28 01:52:12,529 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 26931 event pairs, 1200 based on Foata normal form. 4/4726 useless extension candidates. Maximal degree in co-relation 10532. Up to 4520 conditions per place. [2024-06-28 01:52:12,549 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 64 selfloop transitions, 10 changer transitions 0/82 dead transitions. [2024-06-28 01:52:12,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 82 transitions, 367 flow [2024-06-28 01:52:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:52:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:52:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-28 01:52:12,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2024-06-28 01:52:12,554 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 125 flow. Second operand 4 states and 122 transitions. [2024-06-28 01:52:12,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 82 transitions, 367 flow [2024-06-28 01:52:12,556 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 01:52:12,558 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 188 flow [2024-06-28 01:52:12,560 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 01:52:12,561 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-06-28 01:52:12,561 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 188 flow [2024-06-28 01:52:12,562 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 01:52:12,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:12,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:12,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:52:12,567 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 01:52:12,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:12,569 INFO L85 PathProgramCache]: Analyzing trace with hash -546735609, now seen corresponding path program 1 times [2024-06-28 01:52:12,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:12,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726099703] [2024-06-28 01:52:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:12,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:15,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:15,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726099703] [2024-06-28 01:52:15,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726099703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:15,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:15,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:52:15,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876305527] [2024-06-28 01:52:15,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:15,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:52:15,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:15,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:52:15,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:52:15,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:52:15,376 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 01:52:15,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:15,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:52:15,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:16,856 INFO L124 PetriNetUnfolderBase]: 4041/5921 cut-off events. [2024-06-28 01:52:16,857 INFO L125 PetriNetUnfolderBase]: For 3047/3047 co-relation queries the response was YES. [2024-06-28 01:52:16,866 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 32583 event pairs, 964 based on Foata normal form. 8/5928 useless extension candidates. Maximal degree in co-relation 14660. Up to 5570 conditions per place. [2024-06-28 01:52:16,889 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 93 selfloop transitions, 15 changer transitions 0/115 dead transitions. [2024-06-28 01:52:16,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 115 transitions, 566 flow [2024-06-28 01:52:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:52:16,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:52:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-06-28 01:52:16,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-06-28 01:52:16,894 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 188 flow. Second operand 6 states and 174 transitions. [2024-06-28 01:52:16,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 115 transitions, 566 flow [2024-06-28 01:52:16,900 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 01:52:16,902 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 258 flow [2024-06-28 01:52:16,902 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 01:52:16,903 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-06-28 01:52:16,904 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 258 flow [2024-06-28 01:52:16,904 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 01:52:16,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:16,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:16,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:52:16,905 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 01:52:16,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:16,905 INFO L85 PathProgramCache]: Analyzing trace with hash 115983425, now seen corresponding path program 1 times [2024-06-28 01:52:16,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:16,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921899530] [2024-06-28 01:52:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:16,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:18,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:18,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921899530] [2024-06-28 01:52:18,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921899530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:18,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:18,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:52:18,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381209878] [2024-06-28 01:52:18,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:18,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:52:18,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:18,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:52:18,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:52:18,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:18,428 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 01:52:18,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:18,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:18,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:19,893 INFO L124 PetriNetUnfolderBase]: 4033/6190 cut-off events. [2024-06-28 01:52:19,893 INFO L125 PetriNetUnfolderBase]: For 5223/5223 co-relation queries the response was YES. [2024-06-28 01:52:19,905 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 35891 event pairs, 1531 based on Foata normal form. 3/6192 useless extension candidates. Maximal degree in co-relation 16151. Up to 5745 conditions per place. [2024-06-28 01:52:19,930 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 67 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2024-06-28 01:52:19,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 486 flow [2024-06-28 01:52:19,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:52:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:52:19,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 01:52:19,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-28 01:52:19,932 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 258 flow. Second operand 5 states and 118 transitions. [2024-06-28 01:52:19,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 486 flow [2024-06-28 01:52:19,938 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 01:52:19,940 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 286 flow [2024-06-28 01:52:19,940 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 01:52:19,941 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2024-06-28 01:52:19,942 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 286 flow [2024-06-28 01:52:19,942 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 01:52:19,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:19,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:19,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:52:19,943 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 01:52:19,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:19,944 INFO L85 PathProgramCache]: Analyzing trace with hash -699478788, now seen corresponding path program 1 times [2024-06-28 01:52:19,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:19,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305364596] [2024-06-28 01:52:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:19,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:21,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:21,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305364596] [2024-06-28 01:52:21,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305364596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:21,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:21,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:52:21,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401062999] [2024-06-28 01:52:21,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:21,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:52:21,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:21,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:52:21,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:52:21,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:21,816 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 01:52:21,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:21,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:21,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:23,541 INFO L124 PetriNetUnfolderBase]: 4023/6170 cut-off events. [2024-06-28 01:52:23,542 INFO L125 PetriNetUnfolderBase]: For 7338/7338 co-relation queries the response was YES. [2024-06-28 01:52:23,553 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 35136 event pairs, 1651 based on Foata normal form. 4/6173 useless extension candidates. Maximal degree in co-relation 17167. Up to 5721 conditions per place. [2024-06-28 01:52:23,658 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 83 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2024-06-28 01:52:23,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 622 flow [2024-06-28 01:52:23,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:52:23,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:52:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 01:52:23,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-28 01:52:23,664 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 286 flow. Second operand 6 states and 140 transitions. [2024-06-28 01:52:23,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 622 flow [2024-06-28 01:52:23,671 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 01:52:23,673 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 382 flow [2024-06-28 01:52:23,673 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 01:52:23,675 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2024-06-28 01:52:23,675 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 382 flow [2024-06-28 01:52:23,675 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 01:52:23,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:23,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:23,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:52:23,676 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 01:52:23,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:23,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1547216508, now seen corresponding path program 1 times [2024-06-28 01:52:23,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:23,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415583519] [2024-06-28 01:52:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:23,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:26,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:26,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415583519] [2024-06-28 01:52:26,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415583519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:26,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:26,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:52:26,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517529278] [2024-06-28 01:52:26,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:26,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:52:26,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:26,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:52:26,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:52:26,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:26,293 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 01:52:26,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:26,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:26,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:27,944 INFO L124 PetriNetUnfolderBase]: 4077/5975 cut-off events. [2024-06-28 01:52:27,944 INFO L125 PetriNetUnfolderBase]: For 9919/9921 co-relation queries the response was YES. [2024-06-28 01:52:27,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18440 conditions, 5975 events. 4077/5975 cut-off events. For 9919/9921 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 32884 event pairs, 1193 based on Foata normal form. 5/5979 useless extension candidates. Maximal degree in co-relation 18415. Up to 5639 conditions per place. [2024-06-28 01:52:27,975 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 95 selfloop transitions, 24 changer transitions 0/125 dead transitions. [2024-06-28 01:52:27,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 125 transitions, 818 flow [2024-06-28 01:52:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:52:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:52:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 01:52:27,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-28 01:52:27,977 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 382 flow. Second operand 6 states and 153 transitions. [2024-06-28 01:52:27,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 125 transitions, 818 flow [2024-06-28 01:52:27,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 125 transitions, 806 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 01:52:27,985 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 508 flow [2024-06-28 01:52:27,985 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=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=508, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2024-06-28 01:52:27,986 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2024-06-28 01:52:27,986 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 508 flow [2024-06-28 01:52:27,986 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 01:52:27,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:27,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:27,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:52:27,987 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 01:52:27,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:27,987 INFO L85 PathProgramCache]: Analyzing trace with hash 278071330, now seen corresponding path program 2 times [2024-06-28 01:52:27,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:27,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221579364] [2024-06-28 01:52:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:27,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:30,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:30,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221579364] [2024-06-28 01:52:30,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221579364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:30,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:30,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:52:30,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568499211] [2024-06-28 01:52:30,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:30,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:52:30,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:30,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:52:30,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:52:30,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:30,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 508 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 01:52:30,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:30,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:30,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:31,753 INFO L124 PetriNetUnfolderBase]: 4069/5965 cut-off events. [2024-06-28 01:52:31,753 INFO L125 PetriNetUnfolderBase]: For 13945/13948 co-relation queries the response was YES. [2024-06-28 01:52:31,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19922 conditions, 5965 events. 4069/5965 cut-off events. For 13945/13948 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 32760 event pairs, 1196 based on Foata normal form. 5/5968 useless extension candidates. Maximal degree in co-relation 19893. Up to 5632 conditions per place. [2024-06-28 01:52:31,787 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 90 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-06-28 01:52:31,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 120 transitions, 848 flow [2024-06-28 01:52:31,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:52:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:52:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:52:31,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:52:31,789 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 508 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:52:31,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 120 transitions, 848 flow [2024-06-28 01:52:31,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 120 transitions, 832 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 01:52:31,803 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 550 flow [2024-06-28 01:52:31,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=550, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-06-28 01:52:31,804 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-06-28 01:52:31,804 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 550 flow [2024-06-28 01:52:31,805 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 01:52:31,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:31,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:31,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:52:31,805 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 01:52:31,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:31,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2011508705, now seen corresponding path program 1 times [2024-06-28 01:52:31,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:31,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592050019] [2024-06-28 01:52:31,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:31,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:34,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:34,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592050019] [2024-06-28 01:52:34,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592050019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:34,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:34,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:52:34,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591090855] [2024-06-28 01:52:34,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:34,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:52:34,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:34,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:52:34,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:52:34,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:34,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 550 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 01:52:34,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:34,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:34,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:36,415 INFO L124 PetriNetUnfolderBase]: 4291/6297 cut-off events. [2024-06-28 01:52:36,415 INFO L125 PetriNetUnfolderBase]: For 15607/15609 co-relation queries the response was YES. [2024-06-28 01:52:36,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21390 conditions, 6297 events. 4291/6297 cut-off events. For 15607/15609 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 34615 event pairs, 1198 based on Foata normal form. 5/6301 useless extension candidates. Maximal degree in co-relation 21358. Up to 5882 conditions per place. [2024-06-28 01:52:36,441 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 125 selfloop transitions, 32 changer transitions 0/163 dead transitions. [2024-06-28 01:52:36,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 163 transitions, 1156 flow [2024-06-28 01:52:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:52:36,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:52:36,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:52:36,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-28 01:52:36,443 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 550 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:52:36,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 163 transitions, 1156 flow [2024-06-28 01:52:36,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 163 transitions, 1104 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:52:36,456 INFO L231 Difference]: Finished difference. Result has 85 places, 97 transitions, 726 flow [2024-06-28 01:52:36,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=726, PETRI_PLACES=85, PETRI_TRANSITIONS=97} [2024-06-28 01:52:36,457 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 34 predicate places. [2024-06-28 01:52:36,457 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 97 transitions, 726 flow [2024-06-28 01:52:36,457 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 01:52:36,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:36,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:36,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:52:36,458 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 01:52:36,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:36,458 INFO L85 PathProgramCache]: Analyzing trace with hash 719068989, now seen corresponding path program 2 times [2024-06-28 01:52:36,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:36,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863993545] [2024-06-28 01:52:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:36,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:39,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:39,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863993545] [2024-06-28 01:52:39,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863993545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:39,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:39,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:52:39,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638476630] [2024-06-28 01:52:39,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:39,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:52:39,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:52:39,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:52:39,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:39,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 97 transitions, 726 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 01:52:39,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:39,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:39,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:41,026 INFO L124 PetriNetUnfolderBase]: 4345/6399 cut-off events. [2024-06-28 01:52:41,026 INFO L125 PetriNetUnfolderBase]: For 20501/20505 co-relation queries the response was YES. [2024-06-28 01:52:41,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23635 conditions, 6399 events. 4345/6399 cut-off events. For 20501/20505 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35536 event pairs, 1152 based on Foata normal form. 7/6405 useless extension candidates. Maximal degree in co-relation 23600. Up to 5880 conditions per place. [2024-06-28 01:52:41,067 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 123 selfloop transitions, 31 changer transitions 0/160 dead transitions. [2024-06-28 01:52:41,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 160 transitions, 1266 flow [2024-06-28 01:52:41,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:52:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:52:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:52:41,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-06-28 01:52:41,069 INFO L175 Difference]: Start difference. First operand has 85 places, 97 transitions, 726 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:52:41,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 160 transitions, 1266 flow [2024-06-28 01:52:41,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 160 transitions, 1196 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:52:41,093 INFO L231 Difference]: Finished difference. Result has 88 places, 100 transitions, 765 flow [2024-06-28 01:52:41,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=765, PETRI_PLACES=88, PETRI_TRANSITIONS=100} [2024-06-28 01:52:41,094 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 37 predicate places. [2024-06-28 01:52:41,094 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 100 transitions, 765 flow [2024-06-28 01:52:41,097 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 01:52:41,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:41,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:41,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:52:41,099 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 01:52:41,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:41,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1909890437, now seen corresponding path program 3 times [2024-06-28 01:52:41,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:41,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463953911] [2024-06-28 01:52:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:41,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:43,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:43,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463953911] [2024-06-28 01:52:43,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463953911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:43,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:43,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:52:43,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388694913] [2024-06-28 01:52:43,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:43,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:52:43,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:43,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:52:43,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:52:44,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:44,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 100 transitions, 765 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 01:52:44,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:44,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:44,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:45,900 INFO L124 PetriNetUnfolderBase]: 4399/6471 cut-off events. [2024-06-28 01:52:45,901 INFO L125 PetriNetUnfolderBase]: For 25779/25783 co-relation queries the response was YES. [2024-06-28 01:52:45,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25088 conditions, 6471 events. 4399/6471 cut-off events. For 25779/25783 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 35734 event pairs, 1222 based on Foata normal form. 5/6475 useless extension candidates. Maximal degree in co-relation 25053. Up to 5700 conditions per place. [2024-06-28 01:52:45,937 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 111 selfloop transitions, 45 changer transitions 0/162 dead transitions. [2024-06-28 01:52:45,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 162 transitions, 1363 flow [2024-06-28 01:52:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:52:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:52:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 01:52:45,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547112462006079 [2024-06-28 01:52:45,940 INFO L175 Difference]: Start difference. First operand has 88 places, 100 transitions, 765 flow. Second operand 7 states and 180 transitions. [2024-06-28 01:52:45,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 162 transitions, 1363 flow [2024-06-28 01:52:45,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 162 transitions, 1300 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:52:45,961 INFO L231 Difference]: Finished difference. Result has 90 places, 106 transitions, 874 flow [2024-06-28 01:52:45,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=874, PETRI_PLACES=90, PETRI_TRANSITIONS=106} [2024-06-28 01:52:45,962 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 39 predicate places. [2024-06-28 01:52:45,962 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 106 transitions, 874 flow [2024-06-28 01:52:45,962 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 01:52:45,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:45,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:45,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:52:45,962 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 01:52:45,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:45,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2104150715, now seen corresponding path program 1 times [2024-06-28 01:52:45,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:45,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286085707] [2024-06-28 01:52:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:45,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:48,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:48,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286085707] [2024-06-28 01:52:48,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286085707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:48,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:48,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:52:48,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226727003] [2024-06-28 01:52:48,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:48,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:52:48,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:48,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:52:48,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:52:48,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:48,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 106 transitions, 874 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 01:52:48,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:48,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:48,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:50,806 INFO L124 PetriNetUnfolderBase]: 5095/7502 cut-off events. [2024-06-28 01:52:50,806 INFO L125 PetriNetUnfolderBase]: For 33549/33555 co-relation queries the response was YES. [2024-06-28 01:52:50,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29447 conditions, 7502 events. 5095/7502 cut-off events. For 33549/33555 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 41891 event pairs, 1218 based on Foata normal form. 16/7517 useless extension candidates. Maximal degree in co-relation 29411. Up to 6454 conditions per place. [2024-06-28 01:52:50,849 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 155 selfloop transitions, 44 changer transitions 0/205 dead transitions. [2024-06-28 01:52:50,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 205 transitions, 1710 flow [2024-06-28 01:52:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:52:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:52:50,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:52:50,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 01:52:50,852 INFO L175 Difference]: Start difference. First operand has 90 places, 106 transitions, 874 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:52:50,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 205 transitions, 1710 flow [2024-06-28 01:52:50,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 205 transitions, 1664 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:52:50,885 INFO L231 Difference]: Finished difference. Result has 98 places, 123 transitions, 1078 flow [2024-06-28 01:52:50,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1078, PETRI_PLACES=98, PETRI_TRANSITIONS=123} [2024-06-28 01:52:50,886 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 47 predicate places. [2024-06-28 01:52:50,886 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 123 transitions, 1078 flow [2024-06-28 01:52:50,886 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 01:52:50,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:50,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:50,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:52:50,887 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 01:52:50,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:50,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1210798305, now seen corresponding path program 2 times [2024-06-28 01:52:50,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:50,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45736215] [2024-06-28 01:52:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:50,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:53,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45736215] [2024-06-28 01:52:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45736215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:53,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:53,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:52:53,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624922745] [2024-06-28 01:52:53,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:53,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:52:53,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:53,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:52:53,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:52:53,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:53,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 123 transitions, 1078 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 01:52:53,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:53,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:53,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:55,237 INFO L124 PetriNetUnfolderBase]: 5179/7587 cut-off events. [2024-06-28 01:52:55,237 INFO L125 PetriNetUnfolderBase]: For 44270/44279 co-relation queries the response was YES. [2024-06-28 01:52:55,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33733 conditions, 7587 events. 5179/7587 cut-off events. For 44270/44279 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 42179 event pairs, 1219 based on Foata normal form. 16/7600 useless extension candidates. Maximal degree in co-relation 33693. Up to 6837 conditions per place. [2024-06-28 01:52:55,284 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 152 selfloop transitions, 38 changer transitions 0/196 dead transitions. [2024-06-28 01:52:55,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 196 transitions, 1807 flow [2024-06-28 01:52:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:52:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:52:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:52:55,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 01:52:55,287 INFO L175 Difference]: Start difference. First operand has 98 places, 123 transitions, 1078 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:52:55,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 196 transitions, 1807 flow [2024-06-28 01:52:55,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 196 transitions, 1731 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:52:55,355 INFO L231 Difference]: Finished difference. Result has 103 places, 132 transitions, 1198 flow [2024-06-28 01:52:55,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1198, PETRI_PLACES=103, PETRI_TRANSITIONS=132} [2024-06-28 01:52:55,356 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 52 predicate places. [2024-06-28 01:52:55,356 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 132 transitions, 1198 flow [2024-06-28 01:52:55,356 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 01:52:55,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:55,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:55,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:52:55,357 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 01:52:55,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:55,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2110816955, now seen corresponding path program 3 times [2024-06-28 01:52:55,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:55,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309206342] [2024-06-28 01:52:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:55,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:57,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:57,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309206342] [2024-06-28 01:52:57,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309206342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:57,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:57,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:52:57,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332416556] [2024-06-28 01:52:57,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:57,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:52:57,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:57,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:52:57,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:52:57,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:57,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 132 transitions, 1198 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 01:52:57,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:57,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:57,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:59,726 INFO L124 PetriNetUnfolderBase]: 5179/7567 cut-off events. [2024-06-28 01:52:59,727 INFO L125 PetriNetUnfolderBase]: For 46189/46198 co-relation queries the response was YES. [2024-06-28 01:52:59,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34696 conditions, 7567 events. 5179/7567 cut-off events. For 46189/46198 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 41025 event pairs, 1309 based on Foata normal form. 10/7574 useless extension candidates. Maximal degree in co-relation 34653. Up to 7028 conditions per place. [2024-06-28 01:52:59,770 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 171 selfloop transitions, 34 changer transitions 0/211 dead transitions. [2024-06-28 01:52:59,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 211 transitions, 2067 flow [2024-06-28 01:52:59,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:52:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:52:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:52:59,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-06-28 01:52:59,774 INFO L175 Difference]: Start difference. First operand has 103 places, 132 transitions, 1198 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:52:59,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 211 transitions, 2067 flow [2024-06-28 01:52:59,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 211 transitions, 1964 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 01:52:59,850 INFO L231 Difference]: Finished difference. Result has 109 places, 155 transitions, 1481 flow [2024-06-28 01:52:59,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1481, PETRI_PLACES=109, PETRI_TRANSITIONS=155} [2024-06-28 01:52:59,852 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 58 predicate places. [2024-06-28 01:52:59,852 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 155 transitions, 1481 flow [2024-06-28 01:52:59,853 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 01:52:59,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:59,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:59,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:52:59,853 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 01:52:59,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:59,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2110579619, now seen corresponding path program 4 times [2024-06-28 01:52:59,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:59,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822352263] [2024-06-28 01:52:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:59,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:02,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:02,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822352263] [2024-06-28 01:53:02,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822352263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:02,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:02,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:02,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066746970] [2024-06-28 01:53:02,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:02,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:02,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:02,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:02,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:02,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:02,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 155 transitions, 1481 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 01:53:02,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:02,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:02,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:04,435 INFO L124 PetriNetUnfolderBase]: 5171/7553 cut-off events. [2024-06-28 01:53:04,436 INFO L125 PetriNetUnfolderBase]: For 53641/53652 co-relation queries the response was YES. [2024-06-28 01:53:04,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36360 conditions, 7553 events. 5171/7553 cut-off events. For 53641/53652 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 41348 event pairs, 1312 based on Foata normal form. 5/7552 useless extension candidates. Maximal degree in co-relation 36312. Up to 6751 conditions per place. [2024-06-28 01:53:04,488 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 149 selfloop transitions, 52 changer transitions 0/207 dead transitions. [2024-06-28 01:53:04,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 207 transitions, 2112 flow [2024-06-28 01:53:04,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:04,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:53:04,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2024-06-28 01:53:04,498 INFO L175 Difference]: Start difference. First operand has 109 places, 155 transitions, 1481 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:53:04,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 207 transitions, 2112 flow [2024-06-28 01:53:04,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 207 transitions, 2070 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:04,569 INFO L231 Difference]: Finished difference. Result has 115 places, 155 transitions, 1558 flow [2024-06-28 01:53:04,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1558, PETRI_PLACES=115, PETRI_TRANSITIONS=155} [2024-06-28 01:53:04,569 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 64 predicate places. [2024-06-28 01:53:04,570 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 155 transitions, 1558 flow [2024-06-28 01:53:04,570 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 01:53:04,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:04,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:04,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:53:04,570 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 01:53:04,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:04,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2110825883, now seen corresponding path program 1 times [2024-06-28 01:53:04,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:04,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988607884] [2024-06-28 01:53:04,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:04,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:07,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:07,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988607884] [2024-06-28 01:53:07,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988607884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:07,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:07,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:07,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130528526] [2024-06-28 01:53:07,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:07,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:07,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:07,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:07,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:07,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:07,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 155 transitions, 1558 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 01:53:07,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:07,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:07,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:09,372 INFO L124 PetriNetUnfolderBase]: 5163/7815 cut-off events. [2024-06-28 01:53:09,373 INFO L125 PetriNetUnfolderBase]: For 55366/55368 co-relation queries the response was YES. [2024-06-28 01:53:09,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36895 conditions, 7815 events. 5163/7815 cut-off events. For 55366/55368 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 44368 event pairs, 1611 based on Foata normal form. 4/7818 useless extension candidates. Maximal degree in co-relation 36844. Up to 7237 conditions per place. [2024-06-28 01:53:09,420 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 177 selfloop transitions, 17 changer transitions 0/200 dead transitions. [2024-06-28 01:53:09,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 200 transitions, 2098 flow [2024-06-28 01:53:09,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:53:09,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-28 01:53:09,423 INFO L175 Difference]: Start difference. First operand has 115 places, 155 transitions, 1558 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:53:09,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 200 transitions, 2098 flow [2024-06-28 01:53:09,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 200 transitions, 1964 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:53:09,488 INFO L231 Difference]: Finished difference. Result has 116 places, 158 transitions, 1512 flow [2024-06-28 01:53:09,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1512, PETRI_PLACES=116, PETRI_TRANSITIONS=158} [2024-06-28 01:53:09,489 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 65 predicate places. [2024-06-28 01:53:09,489 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 158 transitions, 1512 flow [2024-06-28 01:53:09,489 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 01:53:09,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:09,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:09,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:53:09,490 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 01:53:09,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:09,490 INFO L85 PathProgramCache]: Analyzing trace with hash -192792892, now seen corresponding path program 1 times [2024-06-28 01:53:09,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:09,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133633735] [2024-06-28 01:53:09,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:09,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:12,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133633735] [2024-06-28 01:53:12,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133633735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:12,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:12,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:12,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752951279] [2024-06-28 01:53:12,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:12,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:12,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:12,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:12,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:12,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:12,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 158 transitions, 1512 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 01:53:12,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:12,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:12,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:15,593 INFO L124 PetriNetUnfolderBase]: 5607/8232 cut-off events. [2024-06-28 01:53:15,594 INFO L125 PetriNetUnfolderBase]: For 63264/63272 co-relation queries the response was YES. [2024-06-28 01:53:15,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39944 conditions, 8232 events. 5607/8232 cut-off events. For 63264/63272 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 45943 event pairs, 1268 based on Foata normal form. 18/8249 useless extension candidates. Maximal degree in co-relation 39892. Up to 7200 conditions per place. [2024-06-28 01:53:15,655 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 203 selfloop transitions, 56 changer transitions 0/265 dead transitions. [2024-06-28 01:53:15,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 265 transitions, 2614 flow [2024-06-28 01:53:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:53:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:53:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-28 01:53:15,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-28 01:53:15,657 INFO L175 Difference]: Start difference. First operand has 116 places, 158 transitions, 1512 flow. Second operand 10 states and 255 transitions. [2024-06-28 01:53:15,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 265 transitions, 2614 flow [2024-06-28 01:53:15,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 265 transitions, 2550 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:53:15,741 INFO L231 Difference]: Finished difference. Result has 123 places, 176 transitions, 1824 flow [2024-06-28 01:53:15,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1824, PETRI_PLACES=123, PETRI_TRANSITIONS=176} [2024-06-28 01:53:15,742 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 72 predicate places. [2024-06-28 01:53:15,742 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 176 transitions, 1824 flow [2024-06-28 01:53:15,742 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 01:53:15,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:15,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:15,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:53:15,743 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 01:53:15,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:15,744 INFO L85 PathProgramCache]: Analyzing trace with hash -192648742, now seen corresponding path program 2 times [2024-06-28 01:53:15,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:15,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272310236] [2024-06-28 01:53:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:18,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:18,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272310236] [2024-06-28 01:53:18,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272310236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:18,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:18,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:18,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368726867] [2024-06-28 01:53:18,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:18,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:18,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:18,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:18,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:18,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:18,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 176 transitions, 1824 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 01:53:18,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:18,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:18,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:22,015 INFO L124 PetriNetUnfolderBase]: 6593/9613 cut-off events. [2024-06-28 01:53:22,015 INFO L125 PetriNetUnfolderBase]: For 98664/98668 co-relation queries the response was YES. [2024-06-28 01:53:22,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51331 conditions, 9613 events. 6593/9613 cut-off events. For 98664/98668 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 53938 event pairs, 1414 based on Foata normal form. 12/9624 useless extension candidates. Maximal degree in co-relation 51276. Up to 6738 conditions per place. [2024-06-28 01:53:22,082 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 197 selfloop transitions, 110 changer transitions 0/313 dead transitions. [2024-06-28 01:53:22,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 313 transitions, 3454 flow [2024-06-28 01:53:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:53:22,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:53:22,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 301 transitions. [2024-06-28 01:53:22,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822050290135397 [2024-06-28 01:53:22,085 INFO L175 Difference]: Start difference. First operand has 123 places, 176 transitions, 1824 flow. Second operand 11 states and 301 transitions. [2024-06-28 01:53:22,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 313 transitions, 3454 flow [2024-06-28 01:53:22,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 313 transitions, 3259 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 01:53:22,194 INFO L231 Difference]: Finished difference. Result has 131 places, 199 transitions, 2300 flow [2024-06-28 01:53:22,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2300, PETRI_PLACES=131, PETRI_TRANSITIONS=199} [2024-06-28 01:53:22,194 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 80 predicate places. [2024-06-28 01:53:22,195 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 199 transitions, 2300 flow [2024-06-28 01:53:22,195 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 01:53:22,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:22,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:22,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:53:22,195 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 01:53:22,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:22,196 INFO L85 PathProgramCache]: Analyzing trace with hash -922930684, now seen corresponding path program 3 times [2024-06-28 01:53:22,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:22,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353541342] [2024-06-28 01:53:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:22,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:25,396 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 01:53:25,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:25,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353541342] [2024-06-28 01:53:25,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353541342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:25,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:25,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:25,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268103359] [2024-06-28 01:53:25,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:25,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:25,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:25,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:25,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:25,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:25,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 199 transitions, 2300 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 01:53:25,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:25,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:25,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:28,079 INFO L124 PetriNetUnfolderBase]: 6781/9903 cut-off events. [2024-06-28 01:53:28,080 INFO L125 PetriNetUnfolderBase]: For 129498/129502 co-relation queries the response was YES. [2024-06-28 01:53:28,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57832 conditions, 9903 events. 6781/9903 cut-off events. For 129498/129502 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 55940 event pairs, 1322 based on Foata normal form. 12/9914 useless extension candidates. Maximal degree in co-relation 57773. Up to 6879 conditions per place. [2024-06-28 01:53:28,169 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 176 selfloop transitions, 122 changer transitions 0/304 dead transitions. [2024-06-28 01:53:28,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 304 transitions, 3643 flow [2024-06-28 01:53:28,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:53:28,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:53:28,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 269 transitions. [2024-06-28 01:53:28,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5723404255319149 [2024-06-28 01:53:28,173 INFO L175 Difference]: Start difference. First operand has 131 places, 199 transitions, 2300 flow. Second operand 10 states and 269 transitions. [2024-06-28 01:53:28,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 304 transitions, 3643 flow [2024-06-28 01:53:28,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 304 transitions, 3426 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-28 01:53:28,342 INFO L231 Difference]: Finished difference. Result has 138 places, 210 transitions, 2611 flow [2024-06-28 01:53:28,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2611, PETRI_PLACES=138, PETRI_TRANSITIONS=210} [2024-06-28 01:53:28,342 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 87 predicate places. [2024-06-28 01:53:28,342 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 210 transitions, 2611 flow [2024-06-28 01:53:28,343 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 01:53:28,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:28,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:28,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:53:28,343 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 01:53:28,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash 938644668, now seen corresponding path program 4 times [2024-06-28 01:53:28,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:28,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626055416] [2024-06-28 01:53:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:28,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:31,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:31,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626055416] [2024-06-28 01:53:31,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626055416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:31,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:31,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:31,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306358227] [2024-06-28 01:53:31,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:31,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:31,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:31,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:31,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:31,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:31,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 210 transitions, 2611 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 01:53:31,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:31,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:31,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:34,137 INFO L124 PetriNetUnfolderBase]: 6989/10195 cut-off events. [2024-06-28 01:53:34,137 INFO L125 PetriNetUnfolderBase]: For 140941/140952 co-relation queries the response was YES. [2024-06-28 01:53:34,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61746 conditions, 10195 events. 6989/10195 cut-off events. For 140941/140952 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 57693 event pairs, 1484 based on Foata normal form. 12/10201 useless extension candidates. Maximal degree in co-relation 61683. Up to 8476 conditions per place. [2024-06-28 01:53:34,208 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 226 selfloop transitions, 77 changer transitions 0/309 dead transitions. [2024-06-28 01:53:34,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 309 transitions, 3925 flow [2024-06-28 01:53:34,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:53:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:53:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-28 01:53:34,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595744680851064 [2024-06-28 01:53:34,221 INFO L175 Difference]: Start difference. First operand has 138 places, 210 transitions, 2611 flow. Second operand 10 states and 263 transitions. [2024-06-28 01:53:34,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 309 transitions, 3925 flow [2024-06-28 01:53:34,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 309 transitions, 3655 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 01:53:34,406 INFO L231 Difference]: Finished difference. Result has 143 places, 217 transitions, 2667 flow [2024-06-28 01:53:34,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2667, PETRI_PLACES=143, PETRI_TRANSITIONS=217} [2024-06-28 01:53:34,406 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 92 predicate places. [2024-06-28 01:53:34,406 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 217 transitions, 2667 flow [2024-06-28 01:53:34,407 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 01:53:34,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:34,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:34,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:53:34,408 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 01:53:34,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:34,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1010818312, now seen corresponding path program 5 times [2024-06-28 01:53:34,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:34,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565055583] [2024-06-28 01:53:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:34,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:37,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:37,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565055583] [2024-06-28 01:53:37,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565055583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:37,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:37,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:37,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928788977] [2024-06-28 01:53:37,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:37,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:37,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:37,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:37,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:37,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:37,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 217 transitions, 2667 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 01:53:37,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:37,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:37,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:40,099 INFO L124 PetriNetUnfolderBase]: 6989/10165 cut-off events. [2024-06-28 01:53:40,099 INFO L125 PetriNetUnfolderBase]: For 139094/139105 co-relation queries the response was YES. [2024-06-28 01:53:40,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60889 conditions, 10165 events. 6989/10165 cut-off events. For 139094/139105 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 56734 event pairs, 1457 based on Foata normal form. 6/10165 useless extension candidates. Maximal degree in co-relation 60824. Up to 8963 conditions per place. [2024-06-28 01:53:40,194 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 251 selfloop transitions, 71 changer transitions 0/328 dead transitions. [2024-06-28 01:53:40,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 328 transitions, 4342 flow [2024-06-28 01:53:40,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:53:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:53:40,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:53:40,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-28 01:53:40,198 INFO L175 Difference]: Start difference. First operand has 143 places, 217 transitions, 2667 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:53:40,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 328 transitions, 4342 flow [2024-06-28 01:53:40,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 328 transitions, 3945 flow, removed 89 selfloop flow, removed 8 redundant places. [2024-06-28 01:53:40,425 INFO L231 Difference]: Finished difference. Result has 146 places, 253 transitions, 3114 flow [2024-06-28 01:53:40,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3114, PETRI_PLACES=146, PETRI_TRANSITIONS=253} [2024-06-28 01:53:40,426 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 95 predicate places. [2024-06-28 01:53:40,426 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 253 transitions, 3114 flow [2024-06-28 01:53:40,426 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 01:53:40,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:40,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:40,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:53:40,427 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 01:53:40,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:40,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1003466662, now seen corresponding path program 6 times [2024-06-28 01:53:40,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:40,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100245128] [2024-06-28 01:53:40,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:40,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:43,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:43,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100245128] [2024-06-28 01:53:43,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100245128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:43,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:43,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:43,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321916307] [2024-06-28 01:53:43,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:43,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:43,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:43,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:43,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:43,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:43,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 253 transitions, 3114 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 01:53:43,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:43,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:43,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:46,062 INFO L124 PetriNetUnfolderBase]: 7073/10329 cut-off events. [2024-06-28 01:53:46,062 INFO L125 PetriNetUnfolderBase]: For 143470/143481 co-relation queries the response was YES. [2024-06-28 01:53:46,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62023 conditions, 10329 events. 7073/10329 cut-off events. For 143470/143481 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 58501 event pairs, 1566 based on Foata normal form. 12/10335 useless extension candidates. Maximal degree in co-relation 61954. Up to 8541 conditions per place. [2024-06-28 01:53:46,165 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 223 selfloop transitions, 101 changer transitions 0/330 dead transitions. [2024-06-28 01:53:46,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 330 transitions, 4195 flow [2024-06-28 01:53:46,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:53:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:53:46,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:53:46,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484633569739953 [2024-06-28 01:53:46,174 INFO L175 Difference]: Start difference. First operand has 146 places, 253 transitions, 3114 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:53:46,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 330 transitions, 4195 flow [2024-06-28 01:53:46,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 330 transitions, 4154 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 01:53:46,463 INFO L231 Difference]: Finished difference. Result has 153 places, 258 transitions, 3375 flow [2024-06-28 01:53:46,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3073, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3375, PETRI_PLACES=153, PETRI_TRANSITIONS=258} [2024-06-28 01:53:46,464 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 102 predicate places. [2024-06-28 01:53:46,464 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 258 transitions, 3375 flow [2024-06-28 01:53:46,464 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 01:53:46,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:46,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:46,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:53:46,465 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 01:53:46,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:46,465 INFO L85 PathProgramCache]: Analyzing trace with hash 120533860, now seen corresponding path program 1 times [2024-06-28 01:53:46,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:46,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329030716] [2024-06-28 01:53:46,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:46,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:49,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:49,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:49,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329030716] [2024-06-28 01:53:49,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329030716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:49,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:49,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:49,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206001771] [2024-06-28 01:53:49,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:49,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:49,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:49,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:49,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:49,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:49,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 258 transitions, 3375 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 01:53:49,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:49,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:49,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:52,507 INFO L124 PetriNetUnfolderBase]: 7262/10679 cut-off events. [2024-06-28 01:53:52,508 INFO L125 PetriNetUnfolderBase]: For 164006/164014 co-relation queries the response was YES. [2024-06-28 01:53:52,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66401 conditions, 10679 events. 7262/10679 cut-off events. For 164006/164014 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 61725 event pairs, 1203 based on Foata normal form. 14/10692 useless extension candidates. Maximal degree in co-relation 66329. Up to 9449 conditions per place. [2024-06-28 01:53:52,612 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 286 selfloop transitions, 56 changer transitions 0/348 dead transitions. [2024-06-28 01:53:52,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 348 transitions, 4724 flow [2024-06-28 01:53:52,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:53:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:53:52,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-28 01:53:52,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-28 01:53:52,614 INFO L175 Difference]: Start difference. First operand has 153 places, 258 transitions, 3375 flow. Second operand 9 states and 231 transitions. [2024-06-28 01:53:52,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 348 transitions, 4724 flow [2024-06-28 01:53:52,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 348 transitions, 4470 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 01:53:52,991 INFO L231 Difference]: Finished difference. Result has 156 places, 262 transitions, 3360 flow [2024-06-28 01:53:52,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3121, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3360, PETRI_PLACES=156, PETRI_TRANSITIONS=262} [2024-06-28 01:53:52,991 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 105 predicate places. [2024-06-28 01:53:52,992 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 262 transitions, 3360 flow [2024-06-28 01:53:52,992 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 01:53:52,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:52,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:52,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:53:52,992 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 01:53:52,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:52,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1070296392, now seen corresponding path program 2 times [2024-06-28 01:53:52,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:52,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006312209] [2024-06-28 01:53:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:52,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:56,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:56,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006312209] [2024-06-28 01:53:56,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006312209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:56,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:56,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:56,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197022597] [2024-06-28 01:53:56,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:56,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:56,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:56,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:56,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:56,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:53:56,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 262 transitions, 3360 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 01:53:56,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:56,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:53:56,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:59,527 INFO L124 PetriNetUnfolderBase]: 7249/10660 cut-off events. [2024-06-28 01:53:59,528 INFO L125 PetriNetUnfolderBase]: For 164851/164859 co-relation queries the response was YES. [2024-06-28 01:53:59,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65490 conditions, 10660 events. 7249/10660 cut-off events. For 164851/164859 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 61437 event pairs, 1608 based on Foata normal form. 14/10673 useless extension candidates. Maximal degree in co-relation 65417. Up to 9705 conditions per place. [2024-06-28 01:53:59,625 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 275 selfloop transitions, 52 changer transitions 0/333 dead transitions. [2024-06-28 01:53:59,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 333 transitions, 4389 flow [2024-06-28 01:53:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:53:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:53:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:53:59,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-28 01:53:59,627 INFO L175 Difference]: Start difference. First operand has 156 places, 262 transitions, 3360 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:53:59,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 333 transitions, 4389 flow [2024-06-28 01:53:59,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 333 transitions, 4251 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 01:53:59,968 INFO L231 Difference]: Finished difference. Result has 159 places, 262 transitions, 3338 flow [2024-06-28 01:53:59,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3222, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3338, PETRI_PLACES=159, PETRI_TRANSITIONS=262} [2024-06-28 01:53:59,969 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 108 predicate places. [2024-06-28 01:53:59,969 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 262 transitions, 3338 flow [2024-06-28 01:53:59,969 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 01:53:59,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:59,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:59,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:53:59,970 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 01:53:59,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:59,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1677146302, now seen corresponding path program 3 times [2024-06-28 01:53:59,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:59,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653306889] [2024-06-28 01:53:59,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:59,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:03,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:03,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653306889] [2024-06-28 01:54:03,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653306889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:03,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:03,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:03,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730829340] [2024-06-28 01:54:03,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:03,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:03,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:03,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:03,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:03,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:03,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 262 transitions, 3338 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 01:54:03,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:03,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:03,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:06,625 INFO L124 PetriNetUnfolderBase]: 7337/10723 cut-off events. [2024-06-28 01:54:06,626 INFO L125 PetriNetUnfolderBase]: For 170099/170103 co-relation queries the response was YES. [2024-06-28 01:54:06,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66517 conditions, 10723 events. 7337/10723 cut-off events. For 170099/170103 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 61234 event pairs, 1625 based on Foata normal form. 8/10730 useless extension candidates. Maximal degree in co-relation 66442. Up to 9613 conditions per place. [2024-06-28 01:54:06,763 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 255 selfloop transitions, 71 changer transitions 0/332 dead transitions. [2024-06-28 01:54:06,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 332 transitions, 4460 flow [2024-06-28 01:54:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:06,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:54:06,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-28 01:54:06,765 INFO L175 Difference]: Start difference. First operand has 159 places, 262 transitions, 3338 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:54:06,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 332 transitions, 4460 flow [2024-06-28 01:54:07,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 332 transitions, 4346 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:54:07,245 INFO L231 Difference]: Finished difference. Result has 160 places, 264 transitions, 3440 flow [2024-06-28 01:54:07,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3224, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3440, PETRI_PLACES=160, PETRI_TRANSITIONS=264} [2024-06-28 01:54:07,245 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 109 predicate places. [2024-06-28 01:54:07,245 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 264 transitions, 3440 flow [2024-06-28 01:54:07,246 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 01:54:07,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:07,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:07,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:54:07,246 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 01:54:07,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:07,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1676961604, now seen corresponding path program 1 times [2024-06-28 01:54:07,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:07,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685671995] [2024-06-28 01:54:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:07,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:11,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:11,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685671995] [2024-06-28 01:54:11,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685671995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:11,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:11,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:11,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809258293] [2024-06-28 01:54:11,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:11,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:11,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:11,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:11,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:11,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:11,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 264 transitions, 3440 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 01:54:11,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:11,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:11,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:14,180 INFO L124 PetriNetUnfolderBase]: 7653/11089 cut-off events. [2024-06-28 01:54:14,180 INFO L125 PetriNetUnfolderBase]: For 193035/193045 co-relation queries the response was YES. [2024-06-28 01:54:14,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69426 conditions, 11089 events. 7653/11089 cut-off events. For 193035/193045 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 62716 event pairs, 1509 based on Foata normal form. 28/11116 useless extension candidates. Maximal degree in co-relation 69350. Up to 9612 conditions per place. [2024-06-28 01:54:14,272 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 289 selfloop transitions, 68 changer transitions 0/363 dead transitions. [2024-06-28 01:54:14,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 363 transitions, 4716 flow [2024-06-28 01:54:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:54:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:54:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-28 01:54:14,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617021276595745 [2024-06-28 01:54:14,274 INFO L175 Difference]: Start difference. First operand has 160 places, 264 transitions, 3440 flow. Second operand 10 states and 264 transitions. [2024-06-28 01:54:14,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 363 transitions, 4716 flow [2024-06-28 01:54:14,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 363 transitions, 4542 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:14,595 INFO L231 Difference]: Finished difference. Result has 164 places, 268 transitions, 3525 flow [2024-06-28 01:54:14,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3525, PETRI_PLACES=164, PETRI_TRANSITIONS=268} [2024-06-28 01:54:14,595 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 113 predicate places. [2024-06-28 01:54:14,596 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 268 transitions, 3525 flow [2024-06-28 01:54:14,596 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 01:54:14,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:14,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:14,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:54:14,596 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 01:54:14,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:14,597 INFO L85 PathProgramCache]: Analyzing trace with hash -966788960, now seen corresponding path program 4 times [2024-06-28 01:54:14,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:14,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926647706] [2024-06-28 01:54:14,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:14,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:17,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:17,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926647706] [2024-06-28 01:54:17,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926647706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:17,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:17,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:17,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610930484] [2024-06-28 01:54:17,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:17,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:17,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:17,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:17,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:17,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 268 transitions, 3525 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 01:54:17,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:17,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:17,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:20,728 INFO L124 PetriNetUnfolderBase]: 7640/11244 cut-off events. [2024-06-28 01:54:20,728 INFO L125 PetriNetUnfolderBase]: For 194513/194524 co-relation queries the response was YES. [2024-06-28 01:54:20,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70551 conditions, 11244 events. 7640/11244 cut-off events. For 194513/194524 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 65144 event pairs, 1723 based on Foata normal form. 8/11246 useless extension candidates. Maximal degree in co-relation 70474. Up to 10058 conditions per place. [2024-06-28 01:54:20,850 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 255 selfloop transitions, 72 changer transitions 0/333 dead transitions. [2024-06-28 01:54:20,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 333 transitions, 4632 flow [2024-06-28 01:54:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:20,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:20,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:54:20,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 01:54:20,852 INFO L175 Difference]: Start difference. First operand has 164 places, 268 transitions, 3525 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:54:20,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 333 transitions, 4632 flow [2024-06-28 01:54:21,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 333 transitions, 4417 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-28 01:54:21,303 INFO L231 Difference]: Finished difference. Result has 164 places, 270 transitions, 3534 flow [2024-06-28 01:54:21,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3310, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3534, PETRI_PLACES=164, PETRI_TRANSITIONS=270} [2024-06-28 01:54:21,304 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 113 predicate places. [2024-06-28 01:54:21,304 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 270 transitions, 3534 flow [2024-06-28 01:54:21,305 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 01:54:21,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:21,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:21,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:54:21,305 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 01:54:21,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1042704572, now seen corresponding path program 2 times [2024-06-28 01:54:21,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:21,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337915371] [2024-06-28 01:54:21,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:21,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:24,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:24,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337915371] [2024-06-28 01:54:24,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337915371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:24,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:24,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:24,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29463657] [2024-06-28 01:54:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:24,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:24,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:24,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:24,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 270 transitions, 3534 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 01:54:24,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:24,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:24,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:27,939 INFO L124 PetriNetUnfolderBase]: 7956/11657 cut-off events. [2024-06-28 01:54:27,939 INFO L125 PetriNetUnfolderBase]: For 212059/212078 co-relation queries the response was YES. [2024-06-28 01:54:28,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72374 conditions, 11657 events. 7956/11657 cut-off events. For 212059/212078 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 67290 event pairs, 1614 based on Foata normal form. 32/11686 useless extension candidates. Maximal degree in co-relation 72296. Up to 10375 conditions per place. [2024-06-28 01:54:28,078 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 292 selfloop transitions, 54 changer transitions 0/352 dead transitions. [2024-06-28 01:54:28,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 352 transitions, 4720 flow [2024-06-28 01:54:28,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:54:28,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:54:28,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 01:54:28,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541371158392435 [2024-06-28 01:54:28,080 INFO L175 Difference]: Start difference. First operand has 164 places, 270 transitions, 3534 flow. Second operand 9 states and 229 transitions. [2024-06-28 01:54:28,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 352 transitions, 4720 flow [2024-06-28 01:54:28,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 352 transitions, 4540 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:28,650 INFO L231 Difference]: Finished difference. Result has 167 places, 274 transitions, 3595 flow [2024-06-28 01:54:28,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3354, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3595, PETRI_PLACES=167, PETRI_TRANSITIONS=274} [2024-06-28 01:54:28,651 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 116 predicate places. [2024-06-28 01:54:28,651 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 274 transitions, 3595 flow [2024-06-28 01:54:28,651 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 01:54:28,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:28,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:28,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:54:28,652 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 01:54:28,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1270605722, now seen corresponding path program 3 times [2024-06-28 01:54:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:28,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953183984] [2024-06-28 01:54:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:28,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:32,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:32,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953183984] [2024-06-28 01:54:32,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953183984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:32,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:32,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:32,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602182855] [2024-06-28 01:54:32,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:32,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:32,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:32,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:32,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:32,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:32,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 274 transitions, 3595 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 01:54:32,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:32,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:32,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:35,458 INFO L124 PetriNetUnfolderBase]: 8006/11811 cut-off events. [2024-06-28 01:54:35,459 INFO L125 PetriNetUnfolderBase]: For 217766/217785 co-relation queries the response was YES. [2024-06-28 01:54:35,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73879 conditions, 11811 events. 8006/11811 cut-off events. For 217766/217785 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 68763 event pairs, 1618 based on Foata normal form. 18/11826 useless extension candidates. Maximal degree in co-relation 73800. Up to 10918 conditions per place. [2024-06-28 01:54:35,558 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 302 selfloop transitions, 36 changer transitions 0/344 dead transitions. [2024-06-28 01:54:35,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 344 transitions, 4668 flow [2024-06-28 01:54:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:54:35,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 01:54:35,560 INFO L175 Difference]: Start difference. First operand has 167 places, 274 transitions, 3595 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:54:35,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 344 transitions, 4668 flow [2024-06-28 01:54:35,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 344 transitions, 4467 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 01:54:35,973 INFO L231 Difference]: Finished difference. Result has 168 places, 276 transitions, 3523 flow [2024-06-28 01:54:35,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3523, PETRI_PLACES=168, PETRI_TRANSITIONS=276} [2024-06-28 01:54:35,978 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 117 predicate places. [2024-06-28 01:54:35,978 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 276 transitions, 3523 flow [2024-06-28 01:54:35,978 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 01:54:35,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:35,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:35,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:54:35,978 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 01:54:35,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:35,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1279176602, now seen corresponding path program 4 times [2024-06-28 01:54:35,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:35,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356060525] [2024-06-28 01:54:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:35,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:39,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:39,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356060525] [2024-06-28 01:54:39,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356060525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:39,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:39,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:39,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384060803] [2024-06-28 01:54:39,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:39,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:39,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:39,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:39,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:39,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 276 transitions, 3523 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 01:54:39,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:39,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:39,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:42,195 INFO L124 PetriNetUnfolderBase]: 8006/11799 cut-off events. [2024-06-28 01:54:42,195 INFO L125 PetriNetUnfolderBase]: For 217628/217647 co-relation queries the response was YES. [2024-06-28 01:54:42,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73199 conditions, 11799 events. 8006/11799 cut-off events. For 217628/217647 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 68641 event pairs, 1524 based on Foata normal form. 18/11814 useless extension candidates. Maximal degree in co-relation 73119. Up to 10716 conditions per place. [2024-06-28 01:54:42,288 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 303 selfloop transitions, 45 changer transitions 0/354 dead transitions. [2024-06-28 01:54:42,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 354 transitions, 4742 flow [2024-06-28 01:54:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:54:42,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 01:54:42,290 INFO L175 Difference]: Start difference. First operand has 168 places, 276 transitions, 3523 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:54:42,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 354 transitions, 4742 flow [2024-06-28 01:54:42,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 354 transitions, 4663 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:42,655 INFO L231 Difference]: Finished difference. Result has 171 places, 283 transitions, 3692 flow [2024-06-28 01:54:42,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3444, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3692, PETRI_PLACES=171, PETRI_TRANSITIONS=283} [2024-06-28 01:54:42,658 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 120 predicate places. [2024-06-28 01:54:42,658 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 283 transitions, 3692 flow [2024-06-28 01:54:42,658 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 01:54:42,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:42,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:42,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:54:42,659 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 01:54:42,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1929088547, now seen corresponding path program 1 times [2024-06-28 01:54:42,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:42,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250316306] [2024-06-28 01:54:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:42,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:44,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:44,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250316306] [2024-06-28 01:54:44,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250316306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:44,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:44,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:54:44,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13001163] [2024-06-28 01:54:44,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:44,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:54:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:44,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:54:44,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:54:44,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:54:44,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 283 transitions, 3692 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 01:54:44,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:44,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:54:44,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:47,074 INFO L124 PetriNetUnfolderBase]: 7275/11093 cut-off events. [2024-06-28 01:54:47,074 INFO L125 PetriNetUnfolderBase]: For 219696/219841 co-relation queries the response was YES. [2024-06-28 01:54:47,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69620 conditions, 11093 events. 7275/11093 cut-off events. For 219696/219841 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 67750 event pairs, 1962 based on Foata normal form. 61/11013 useless extension candidates. Maximal degree in co-relation 69538. Up to 9909 conditions per place. [2024-06-28 01:54:47,188 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 262 selfloop transitions, 13 changer transitions 0/306 dead transitions. [2024-06-28 01:54:47,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 306 transitions, 4364 flow [2024-06-28 01:54:47,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:54:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:54:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-28 01:54:47,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-06-28 01:54:47,191 INFO L175 Difference]: Start difference. First operand has 171 places, 283 transitions, 3692 flow. Second operand 5 states and 117 transitions. [2024-06-28 01:54:47,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 306 transitions, 4364 flow [2024-06-28 01:54:47,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 306 transitions, 4277 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:47,653 INFO L231 Difference]: Finished difference. Result has 172 places, 287 transitions, 3718 flow [2024-06-28 01:54:47,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3718, PETRI_PLACES=172, PETRI_TRANSITIONS=287} [2024-06-28 01:54:47,658 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 121 predicate places. [2024-06-28 01:54:47,658 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 287 transitions, 3718 flow [2024-06-28 01:54:47,658 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 01:54:47,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:47,658 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 01:54:47,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:54:47,658 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 01:54:47,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:47,659 INFO L85 PathProgramCache]: Analyzing trace with hash 180449789, now seen corresponding path program 1 times [2024-06-28 01:54:47,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:47,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110237976] [2024-06-28 01:54:47,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:47,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:50,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:50,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110237976] [2024-06-28 01:54:50,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110237976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:50,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:50,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:50,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078158947] [2024-06-28 01:54:50,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:50,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:50,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:50,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:54:50,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 287 transitions, 3718 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 01:54:50,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:50,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:54:50,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:55,492 INFO L124 PetriNetUnfolderBase]: 11486/17160 cut-off events. [2024-06-28 01:54:55,493 INFO L125 PetriNetUnfolderBase]: For 427672/427680 co-relation queries the response was YES. [2024-06-28 01:54:55,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107416 conditions, 17160 events. 11486/17160 cut-off events. For 427672/427680 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 108583 event pairs, 1819 based on Foata normal form. 72/17231 useless extension candidates. Maximal degree in co-relation 107332. Up to 10381 conditions per place. [2024-06-28 01:54:55,646 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 357 selfloop transitions, 74 changer transitions 0/437 dead transitions. [2024-06-28 01:54:55,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 437 transitions, 5912 flow [2024-06-28 01:54:55,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:54:55,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:54:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 326 transitions. [2024-06-28 01:54:55,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780141843971631 [2024-06-28 01:54:55,648 INFO L175 Difference]: Start difference. First operand has 172 places, 287 transitions, 3718 flow. Second operand 12 states and 326 transitions. [2024-06-28 01:54:55,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 437 transitions, 5912 flow [2024-06-28 01:54:56,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 437 transitions, 5827 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 01:54:56,379 INFO L231 Difference]: Finished difference. Result has 183 places, 298 transitions, 4166 flow [2024-06-28 01:54:56,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3633, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4166, PETRI_PLACES=183, PETRI_TRANSITIONS=298} [2024-06-28 01:54:56,379 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 132 predicate places. [2024-06-28 01:54:56,380 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 298 transitions, 4166 flow [2024-06-28 01:54:56,380 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 01:54:56,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:56,380 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 01:54:56,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:54:56,380 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 01:54:56,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1457475975, now seen corresponding path program 2 times [2024-06-28 01:54:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:56,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445384275] [2024-06-28 01:54:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:56,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:00,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:00,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445384275] [2024-06-28 01:55:00,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445384275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:00,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:00,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:00,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745886815] [2024-06-28 01:55:00,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:00,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:00,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:00,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:00,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:00,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 298 transitions, 4166 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 01:55:00,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:00,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:00,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:06,127 INFO L124 PetriNetUnfolderBase]: 12525/18749 cut-off events. [2024-06-28 01:55:06,131 INFO L125 PetriNetUnfolderBase]: For 505369/505377 co-relation queries the response was YES. [2024-06-28 01:55:06,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119385 conditions, 18749 events. 12525/18749 cut-off events. For 505369/505377 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 120931 event pairs, 3556 based on Foata normal form. 82/18830 useless extension candidates. Maximal degree in co-relation 119298. Up to 15744 conditions per place. [2024-06-28 01:55:06,328 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 329 selfloop transitions, 72 changer transitions 0/407 dead transitions. [2024-06-28 01:55:06,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 407 transitions, 5691 flow [2024-06-28 01:55:06,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:55:06,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:55:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 286 transitions. [2024-06-28 01:55:06,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:55:06,331 INFO L175 Difference]: Start difference. First operand has 183 places, 298 transitions, 4166 flow. Second operand 11 states and 286 transitions. [2024-06-28 01:55:06,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 407 transitions, 5691 flow [2024-06-28 01:55:07,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 407 transitions, 5433 flow, removed 87 selfloop flow, removed 7 redundant places. [2024-06-28 01:55:07,437 INFO L231 Difference]: Finished difference. Result has 187 places, 301 transitions, 4194 flow [2024-06-28 01:55:07,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4194, PETRI_PLACES=187, PETRI_TRANSITIONS=301} [2024-06-28 01:55:07,438 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 136 predicate places. [2024-06-28 01:55:07,438 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 301 transitions, 4194 flow [2024-06-28 01:55:07,438 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 01:55:07,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:07,439 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 01:55:07,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:55:07,439 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 01:55:07,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:07,439 INFO L85 PathProgramCache]: Analyzing trace with hash 269015549, now seen corresponding path program 3 times [2024-06-28 01:55:07,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:07,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671097413] [2024-06-28 01:55:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:10,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:10,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671097413] [2024-06-28 01:55:10,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671097413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:10,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:10,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:10,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521058438] [2024-06-28 01:55:10,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:10,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:10,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:10,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:10,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:10,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:10,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 301 transitions, 4194 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 01:55:10,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:10,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:10,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:15,935 INFO L124 PetriNetUnfolderBase]: 13137/19697 cut-off events. [2024-06-28 01:55:15,936 INFO L125 PetriNetUnfolderBase]: For 464245/464253 co-relation queries the response was YES. [2024-06-28 01:55:16,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118306 conditions, 19697 events. 13137/19697 cut-off events. For 464245/464253 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 128350 event pairs, 3211 based on Foata normal form. 72/19768 useless extension candidates. Maximal degree in co-relation 118217. Up to 13582 conditions per place. [2024-06-28 01:55:16,352 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 344 selfloop transitions, 72 changer transitions 0/422 dead transitions. [2024-06-28 01:55:16,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 422 transitions, 5981 flow [2024-06-28 01:55:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:55:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:55:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 291 transitions. [2024-06-28 01:55:16,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562862669245648 [2024-06-28 01:55:16,360 INFO L175 Difference]: Start difference. First operand has 187 places, 301 transitions, 4194 flow. Second operand 11 states and 291 transitions. [2024-06-28 01:55:16,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 422 transitions, 5981 flow [2024-06-28 01:55:17,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 422 transitions, 5767 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-28 01:55:17,624 INFO L231 Difference]: Finished difference. Result has 190 places, 308 transitions, 4389 flow [2024-06-28 01:55:17,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3980, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4389, PETRI_PLACES=190, PETRI_TRANSITIONS=308} [2024-06-28 01:55:17,624 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 139 predicate places. [2024-06-28 01:55:17,625 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 308 transitions, 4389 flow [2024-06-28 01:55:17,625 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 01:55:17,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:17,625 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 01:55:17,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:55:17,625 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 01:55:17,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:17,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1319228569, now seen corresponding path program 4 times [2024-06-28 01:55:17,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:17,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028397299] [2024-06-28 01:55:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:17,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:21,353 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 01:55:21,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:21,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028397299] [2024-06-28 01:55:21,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028397299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:21,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:21,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:21,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460056531] [2024-06-28 01:55:21,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:21,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:21,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:21,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:21,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:21,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:21,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 308 transitions, 4389 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 01:55:21,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:21,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:21,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:27,057 INFO L124 PetriNetUnfolderBase]: 14277/21328 cut-off events. [2024-06-28 01:55:27,057 INFO L125 PetriNetUnfolderBase]: For 518243/518247 co-relation queries the response was YES. [2024-06-28 01:55:27,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126875 conditions, 21328 events. 14277/21328 cut-off events. For 518243/518247 co-relation queries the response was YES. Maximal size of possible extension queue 879. Compared 140771 event pairs, 4191 based on Foata normal form. 76/21403 useless extension candidates. Maximal degree in co-relation 126784. Up to 16338 conditions per place. [2024-06-28 01:55:27,472 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 271 selfloop transitions, 158 changer transitions 0/435 dead transitions. [2024-06-28 01:55:27,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 435 transitions, 6132 flow [2024-06-28 01:55:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:55:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:55:27,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 330 transitions. [2024-06-28 01:55:27,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851063829787234 [2024-06-28 01:55:27,491 INFO L175 Difference]: Start difference. First operand has 190 places, 308 transitions, 4389 flow. Second operand 12 states and 330 transitions. [2024-06-28 01:55:27,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 435 transitions, 6132 flow [2024-06-28 01:55:29,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 435 transitions, 5932 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-28 01:55:29,282 INFO L231 Difference]: Finished difference. Result has 195 places, 311 transitions, 4653 flow [2024-06-28 01:55:29,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4189, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4653, PETRI_PLACES=195, PETRI_TRANSITIONS=311} [2024-06-28 01:55:29,282 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 144 predicate places. [2024-06-28 01:55:29,283 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 311 transitions, 4653 flow [2024-06-28 01:55:29,283 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 01:55:29,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:29,283 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 01:55:29,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:55:29,283 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 01:55:29,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:29,284 INFO L85 PathProgramCache]: Analyzing trace with hash -451925477, now seen corresponding path program 5 times [2024-06-28 01:55:29,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:29,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055205094] [2024-06-28 01:55:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:29,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:32,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:32,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055205094] [2024-06-28 01:55:32,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055205094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:32,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:32,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:32,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236058505] [2024-06-28 01:55:32,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:32,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:32,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:32,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:33,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:33,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 311 transitions, 4653 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 01:55:33,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:33,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:33,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:39,811 INFO L124 PetriNetUnfolderBase]: 16733/24984 cut-off events. [2024-06-28 01:55:39,811 INFO L125 PetriNetUnfolderBase]: For 666800/666804 co-relation queries the response was YES. [2024-06-28 01:55:39,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151699 conditions, 24984 events. 16733/24984 cut-off events. For 666800/666804 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 169021 event pairs, 4552 based on Foata normal form. 66/25049 useless extension candidates. Maximal degree in co-relation 151606. Up to 16249 conditions per place. [2024-06-28 01:55:40,108 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 284 selfloop transitions, 162 changer transitions 0/452 dead transitions. [2024-06-28 01:55:40,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 452 transitions, 6826 flow [2024-06-28 01:55:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:55:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:55:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 336 transitions. [2024-06-28 01:55:40,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-06-28 01:55:40,110 INFO L175 Difference]: Start difference. First operand has 195 places, 311 transitions, 4653 flow. Second operand 12 states and 336 transitions. [2024-06-28 01:55:40,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 452 transitions, 6826 flow [2024-06-28 01:55:41,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 452 transitions, 6446 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-28 01:55:41,732 INFO L231 Difference]: Finished difference. Result has 199 places, 318 transitions, 4908 flow [2024-06-28 01:55:41,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4273, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4908, PETRI_PLACES=199, PETRI_TRANSITIONS=318} [2024-06-28 01:55:41,733 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 148 predicate places. [2024-06-28 01:55:41,733 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 318 transitions, 4908 flow [2024-06-28 01:55:41,733 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 01:55:41,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:41,733 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 01:55:41,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:55:41,734 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:41,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:41,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1324590949, now seen corresponding path program 6 times [2024-06-28 01:55:41,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:41,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533685522] [2024-06-28 01:55:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:41,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:45,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:45,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533685522] [2024-06-28 01:55:45,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533685522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:45,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:45,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:45,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386652364] [2024-06-28 01:55:45,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:45,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:45,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:45,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:45,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:45,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:45,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 318 transitions, 4908 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 01:55:45,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:45,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:45,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:51,770 INFO L124 PetriNetUnfolderBase]: 17414/26031 cut-off events. [2024-06-28 01:55:51,771 INFO L125 PetriNetUnfolderBase]: For 666333/666337 co-relation queries the response was YES. [2024-06-28 01:55:51,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153237 conditions, 26031 events. 17414/26031 cut-off events. For 666333/666337 co-relation queries the response was YES. Maximal size of possible extension queue 1087. Compared 178083 event pairs, 5359 based on Foata normal form. 76/26106 useless extension candidates. Maximal degree in co-relation 153142. Up to 21097 conditions per place. [2024-06-28 01:55:52,065 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 261 selfloop transitions, 162 changer transitions 0/429 dead transitions. [2024-06-28 01:55:52,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 429 transitions, 6568 flow [2024-06-28 01:55:52,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:55:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:55:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 299 transitions. [2024-06-28 01:55:52,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5783365570599613 [2024-06-28 01:55:52,067 INFO L175 Difference]: Start difference. First operand has 199 places, 318 transitions, 4908 flow. Second operand 11 states and 299 transitions. [2024-06-28 01:55:52,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 429 transitions, 6568 flow [2024-06-28 01:55:53,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 429 transitions, 6168 flow, removed 99 selfloop flow, removed 8 redundant places. [2024-06-28 01:55:53,641 INFO L231 Difference]: Finished difference. Result has 202 places, 321 transitions, 4994 flow [2024-06-28 01:55:53,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4540, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4994, PETRI_PLACES=202, PETRI_TRANSITIONS=321} [2024-06-28 01:55:53,642 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 151 predicate places. [2024-06-28 01:55:53,642 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 321 transitions, 4994 flow [2024-06-28 01:55:53,642 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 01:55:53,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:53,642 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 01:55:53,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:55:53,642 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:55:53,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:53,643 INFO L85 PathProgramCache]: Analyzing trace with hash -446200025, now seen corresponding path program 1 times [2024-06-28 01:55:53,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:53,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614017348] [2024-06-28 01:55:53,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:53,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:57,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:57,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614017348] [2024-06-28 01:55:57,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614017348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:57,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:57,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:55:57,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616832879] [2024-06-28 01:55:57,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:57,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:55:57,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:57,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:55:57,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:55:57,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:55:57,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 321 transitions, 4994 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:57,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:57,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:55:57,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:05,591 INFO L124 PetriNetUnfolderBase]: 19231/28914 cut-off events. [2024-06-28 01:56:05,591 INFO L125 PetriNetUnfolderBase]: For 724810/724814 co-relation queries the response was YES. [2024-06-28 01:56:05,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168264 conditions, 28914 events. 19231/28914 cut-off events. For 724810/724814 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 202020 event pairs, 5296 based on Foata normal form. 56/28969 useless extension candidates. Maximal degree in co-relation 168167. Up to 17540 conditions per place. [2024-06-28 01:56:05,920 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 259 selfloop transitions, 177 changer transitions 0/442 dead transitions. [2024-06-28 01:56:05,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 442 transitions, 6948 flow [2024-06-28 01:56:05,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:56:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:56:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 304 transitions. [2024-06-28 01:56:05,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5880077369439072 [2024-06-28 01:56:05,922 INFO L175 Difference]: Start difference. First operand has 202 places, 321 transitions, 4994 flow. Second operand 11 states and 304 transitions. [2024-06-28 01:56:05,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 442 transitions, 6948 flow [2024-06-28 01:56:07,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 442 transitions, 6550 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 01:56:07,951 INFO L231 Difference]: Finished difference. Result has 205 places, 327 transitions, 5299 flow [2024-06-28 01:56:07,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4596, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5299, PETRI_PLACES=205, PETRI_TRANSITIONS=327} [2024-06-28 01:56:07,951 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 154 predicate places. [2024-06-28 01:56:07,951 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 327 transitions, 5299 flow [2024-06-28 01:56:07,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:07,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:07,952 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 01:56:07,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:56:07,952 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:56:07,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1425173047, now seen corresponding path program 7 times [2024-06-28 01:56:07,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:07,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411215392] [2024-06-28 01:56:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:07,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:11,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:11,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411215392] [2024-06-28 01:56:11,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411215392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:11,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:11,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:11,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029288512] [2024-06-28 01:56:11,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:11,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:11,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:11,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:11,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:11,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:56:11,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 327 transitions, 5299 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:11,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:11,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:56:11,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand