./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi006_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/rfi006_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/rfi006_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi006_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 01:43:50,838 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:43:50,896 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:43:50,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:43:50,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:43:50,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:43:50,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:43:50,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:43:50,931 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:43:50,934 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:43:50,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:43:50,935 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:43:50,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:43:50,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:43:50,937 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:43:50,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:43:50,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:43:50,937 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:43:50,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:43:50,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:43:50,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:43:50,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:43:50,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:43:50,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:43:50,939 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:43:50,939 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:43:50,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:43:50,939 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:43:50,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:43:50,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:43:50,941 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:43:50,941 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:43:50,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:43:50,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:43:50,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:43:50,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:43:50,942 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:43:50,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:43:50,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:43:50,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:43:50,943 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:43:50,943 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:43:50,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:43:50,943 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:43:51,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:43:51,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:43:51,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:43:51,214 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:43:51,215 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:43:51,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi006_power.oepc.yml/witness.yml [2024-06-28 01:43:51,431 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:43:51,432 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:43:51,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi006_power.oepc.i [2024-06-28 01:43:52,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:43:52,699 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:43:52,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi006_power.oepc.i [2024-06-28 01:43:52,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4fc87f5/86ef22f9d87640dab03c797d0604ae54/FLAGdf1c61d67 [2024-06-28 01:43:52,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4fc87f5/86ef22f9d87640dab03c797d0604ae54 [2024-06-28 01:43:52,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:43:52,735 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:43:52,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:43:52,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:43:52,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:43:52,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:43:51" (1/2) ... [2024-06-28 01:43:52,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9e2d62 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:52, skipping insertion in model container [2024-06-28 01:43:52,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:43:51" (1/2) ... [2024-06-28 01:43:52,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55152299 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:52, skipping insertion in model container [2024-06-28 01:43:52,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:43:52" (2/2) ... [2024-06-28 01:43:52,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9e2d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:52, skipping insertion in model container [2024-06-28 01:43:52,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:43:52" (2/2) ... [2024-06-28 01:43:52,743 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:43:52,856 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:43:52,857 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$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) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & x && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & x && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 01:43:52,858 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_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$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & x && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & x && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! 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))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 01:43:52,858 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$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) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & x && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & x && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 01:43:52,858 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:43:52,859 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-28 01:43:52,896 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:43:53,047 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/rfi006_power.oepc.i[994,1007] [2024-06-28 01:43:53,248 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:43:53,256 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:43:53,286 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/rfi006_power.oepc.i[994,1007] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:43:53,418 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:43:53,452 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:43:53,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53 WrapperNode [2024-06-28 01:43:53,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:43:53,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:43:53,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:43:53,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:43:53,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (1/1) ... [2024-06-28 01:43:53,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (1/1) ... [2024-06-28 01:43:53,547 INFO L138 Inliner]: procedures = 175, calls = 87, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 206 [2024-06-28 01:43:53,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:43:53,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:43:53,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:43:53,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:43:53,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (1/1) ... [2024-06-28 01:43:53,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (1/1) ... [2024-06-28 01:43:53,565 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (1/1) ... [2024-06-28 01:43:53,599 INFO L175 MemorySlicer]: Split 47 memory accesses to 2 slices as follows [2, 45]. 96 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2024-06-28 01:43:53,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (1/1) ... [2024-06-28 01:43:53,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (1/1) ... [2024-06-28 01:43:53,615 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (1/1) ... [2024-06-28 01:43:53,617 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (1/1) ... [2024-06-28 01:43:53,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (1/1) ... [2024-06-28 01:43:53,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (1/1) ... [2024-06-28 01:43:53,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:43:53,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:43:53,626 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:43:53,626 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:43:53,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (1/1) ... [2024-06-28 01:43:53,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:43:53,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:43:53,678 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 01:43:53,720 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 01:43:53,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:43:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:43:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:43:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:43:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:43:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:43:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:43:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:43:53,734 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:43:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:43:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:43:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:43:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:43:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:43:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:43:53,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:43:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:43:53,737 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 01:43:53,853 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:43:53,855 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:43:54,277 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:43:54,277 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:43:54,626 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:43:54,626 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:43:54,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:43:54 BoogieIcfgContainer [2024-06-28 01:43:54,627 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:43:54,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:43:54,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:43:54,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:43:54,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:43:51" (1/4) ... [2024-06-28 01:43:54,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94e80a7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:43:54, skipping insertion in model container [2024-06-28 01:43:54,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:43:52" (2/4) ... [2024-06-28 01:43:54,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94e80a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:43:54, skipping insertion in model container [2024-06-28 01:43:54,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:53" (3/4) ... [2024-06-28 01:43:54,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94e80a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:43:54, skipping insertion in model container [2024-06-28 01:43:54,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:43:54" (4/4) ... [2024-06-28 01:43:54,633 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi006_power.oepc.i [2024-06-28 01:43:54,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:43:54,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:43:54,647 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:43:54,702 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:43:54,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:43:54,758 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:43:54,759 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:43:54,762 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 62 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 01:43:54,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:43:54,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-28 01:43:54,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:43:54,784 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;@442f1415, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:43:54,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:43:54,788 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:43:54,788 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:43:54,788 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:43:54,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:54,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:43:54,789 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 01:43:54,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:54,793 INFO L85 PathProgramCache]: Analyzing trace with hash 789269083, now seen corresponding path program 1 times [2024-06-28 01:43:54,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:54,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179011722] [2024-06-28 01:43:54,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:56,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:56,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179011722] [2024-06-28 01:43:56,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179011722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:56,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:56,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:43:56,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601066319] [2024-06-28 01:43:56,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:56,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:43:56,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:56,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:43:56,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:43:56,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:43:56,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:56,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:56,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:43:56,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:57,430 INFO L124 PetriNetUnfolderBase]: 2790/4431 cut-off events. [2024-06-28 01:43:57,430 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 01:43:57,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8561 conditions, 4431 events. 2790/4431 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 25669 event pairs, 1780 based on Foata normal form. 0/4271 useless extension candidates. Maximal degree in co-relation 8549. Up to 4049 conditions per place. [2024-06-28 01:43:57,452 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 44 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:43:57,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 229 flow [2024-06-28 01:43:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:43:57,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:43:57,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-28 01:43:57,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2024-06-28 01:43:57,462 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 91 transitions. [2024-06-28 01:43:57,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 229 flow [2024-06-28 01:43:57,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:57,467 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 125 flow [2024-06-28 01:43:57,468 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 01:43:57,471 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-28 01:43:57,471 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 125 flow [2024-06-28 01:43:57,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:57,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:57,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:57,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:43:57,472 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 01:43:57,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1721568038, now seen corresponding path program 1 times [2024-06-28 01:43:57,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:57,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108287135] [2024-06-28 01:43:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:57,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:59,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:59,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108287135] [2024-06-28 01:43:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108287135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:59,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:59,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:43:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653901303] [2024-06-28 01:43:59,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:59,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:43:59,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:59,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:43:59,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:43:59,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:43:59,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:59,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:59,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:43:59,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:00,645 INFO L124 PetriNetUnfolderBase]: 2784/4242 cut-off events. [2024-06-28 01:44:00,646 INFO L125 PetriNetUnfolderBase]: For 719/719 co-relation queries the response was YES. [2024-06-28 01:44:00,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9389 conditions, 4242 events. 2784/4242 cut-off events. For 719/719 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23382 event pairs, 1304 based on Foata normal form. 3/4238 useless extension candidates. Maximal degree in co-relation 9377. Up to 4007 conditions per place. [2024-06-28 01:44:00,663 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 61 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-06-28 01:44:00,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 357 flow [2024-06-28 01:44:00,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:44:00,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:44:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-28 01:44:00,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6542553191489362 [2024-06-28 01:44:00,665 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 125 flow. Second operand 4 states and 123 transitions. [2024-06-28 01:44:00,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 357 flow [2024-06-28 01:44:00,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:44:00,667 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 188 flow [2024-06-28 01:44:00,668 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 01:44:00,668 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-06-28 01:44:00,668 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 188 flow [2024-06-28 01:44:00,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:00,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:00,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:00,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:44:00,669 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 01:44:00,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:00,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1828999859, now seen corresponding path program 1 times [2024-06-28 01:44:00,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:00,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340359876] [2024-06-28 01:44:00,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:00,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:02,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:02,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340359876] [2024-06-28 01:44:02,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340359876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:02,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:02,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:44:02,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671291094] [2024-06-28 01:44:02,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:02,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:44:02,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:02,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:44:02,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:44:02,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:44:02,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:02,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:02,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:44:02,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:04,091 INFO L124 PetriNetUnfolderBase]: 3417/5065 cut-off events. [2024-06-28 01:44:04,091 INFO L125 PetriNetUnfolderBase]: For 2813/2813 co-relation queries the response was YES. [2024-06-28 01:44:04,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12616 conditions, 5065 events. 3417/5065 cut-off events. For 2813/2813 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 27515 event pairs, 1119 based on Foata normal form. 5/5066 useless extension candidates. Maximal degree in co-relation 12601. Up to 4756 conditions per place. [2024-06-28 01:44:04,115 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 85 selfloop transitions, 18 changer transitions 0/111 dead transitions. [2024-06-28 01:44:04,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 111 transitions, 570 flow [2024-06-28 01:44:04,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:44:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:44:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-06-28 01:44:04,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6723404255319149 [2024-06-28 01:44:04,120 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 188 flow. Second operand 5 states and 158 transitions. [2024-06-28 01:44:04,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 111 transitions, 570 flow [2024-06-28 01:44:04,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 111 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 01:44:04,130 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 310 flow [2024-06-28 01:44:04,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-06-28 01:44:04,131 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-06-28 01:44:04,131 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 310 flow [2024-06-28 01:44:04,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:04,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:04,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:04,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:44:04,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:04,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:04,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1027182868, now seen corresponding path program 1 times [2024-06-28 01:44:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:04,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249663693] [2024-06-28 01:44:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:04,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:06,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:06,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249663693] [2024-06-28 01:44:06,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249663693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:06,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:06,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:44:06,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355490569] [2024-06-28 01:44:06,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:06,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:44:06,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:06,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:44:06,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:44:06,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:44:06,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:06,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:06,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:44:06,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:07,921 INFO L124 PetriNetUnfolderBase]: 3462/5132 cut-off events. [2024-06-28 01:44:07,921 INFO L125 PetriNetUnfolderBase]: For 6210/6212 co-relation queries the response was YES. [2024-06-28 01:44:07,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14895 conditions, 5132 events. 3462/5132 cut-off events. For 6210/6212 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 27996 event pairs, 752 based on Foata normal form. 12/5140 useless extension candidates. Maximal degree in co-relation 14875. Up to 4711 conditions per place. [2024-06-28 01:44:07,953 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 96 selfloop transitions, 21 changer transitions 0/125 dead transitions. [2024-06-28 01:44:07,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 125 transitions, 724 flow [2024-06-28 01:44:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-06-28 01:44:07,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6524822695035462 [2024-06-28 01:44:07,956 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 310 flow. Second operand 6 states and 184 transitions. [2024-06-28 01:44:07,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 125 transitions, 724 flow [2024-06-28 01:44:07,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 125 transitions, 718 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 01:44:07,965 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 372 flow [2024-06-28 01:44:07,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-06-28 01:44:07,966 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2024-06-28 01:44:07,966 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 372 flow [2024-06-28 01:44:07,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:07,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:07,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:07,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:44:07,967 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 01:44:07,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:07,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1787165825, now seen corresponding path program 1 times [2024-06-28 01:44:07,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:07,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818492584] [2024-06-28 01:44:07,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:07,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:09,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:09,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818492584] [2024-06-28 01:44:09,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818492584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:09,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:09,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:44:09,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994132077] [2024-06-28 01:44:09,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:09,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:44:09,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:09,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:44:09,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:44:09,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:09,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:09,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:09,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:09,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:10,509 INFO L124 PetriNetUnfolderBase]: 3457/5396 cut-off events. [2024-06-28 01:44:10,509 INFO L125 PetriNetUnfolderBase]: For 7942/7942 co-relation queries the response was YES. [2024-06-28 01:44:10,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15986 conditions, 5396 events. 3457/5396 cut-off events. For 7942/7942 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 31226 event pairs, 1344 based on Foata normal form. 2/5393 useless extension candidates. Maximal degree in co-relation 15962. Up to 4975 conditions per place. [2024-06-28 01:44:10,536 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 73 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2024-06-28 01:44:10,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 90 transitions, 622 flow [2024-06-28 01:44:10,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:44:10,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:44:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 01:44:10,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:44:10,538 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 372 flow. Second operand 5 states and 120 transitions. [2024-06-28 01:44:10,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 90 transitions, 622 flow [2024-06-28 01:44:10,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 90 transitions, 568 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:10,543 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 389 flow [2024-06-28 01:44:10,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-28 01:44:10,544 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2024-06-28 01:44:10,544 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 389 flow [2024-06-28 01:44:10,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:10,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:10,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:10,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:44:10,545 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 01:44:10,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:10,545 INFO L85 PathProgramCache]: Analyzing trace with hash 411188666, now seen corresponding path program 1 times [2024-06-28 01:44:10,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:10,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925292515] [2024-06-28 01:44:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:10,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:12,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:12,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925292515] [2024-06-28 01:44:12,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925292515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:12,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:12,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:12,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516806788] [2024-06-28 01:44:12,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:12,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:12,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:12,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:12,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:12,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:12,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 389 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:12,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:12,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:12,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:13,717 INFO L124 PetriNetUnfolderBase]: 3447/5384 cut-off events. [2024-06-28 01:44:13,718 INFO L125 PetriNetUnfolderBase]: For 8459/8459 co-relation queries the response was YES. [2024-06-28 01:44:13,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15909 conditions, 5384 events. 3447/5384 cut-off events. For 8459/8459 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 31127 event pairs, 1258 based on Foata normal form. 4/5386 useless extension candidates. Maximal degree in co-relation 15883. Up to 4923 conditions per place. [2024-06-28 01:44:13,750 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 83 selfloop transitions, 14 changer transitions 0/104 dead transitions. [2024-06-28 01:44:13,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 104 transitions, 679 flow [2024-06-28 01:44:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:13,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:44:13,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-28 01:44:13,752 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 389 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:44:13,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 104 transitions, 679 flow [2024-06-28 01:44:13,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 104 transitions, 654 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:13,759 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 433 flow [2024-06-28 01:44:13,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=433, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2024-06-28 01:44:13,760 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2024-06-28 01:44:13,760 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 433 flow [2024-06-28 01:44:13,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:13,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:13,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:13,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:44:13,761 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 01:44:13,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:13,761 INFO L85 PathProgramCache]: Analyzing trace with hash -143772964, now seen corresponding path program 1 times [2024-06-28 01:44:13,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:13,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769583409] [2024-06-28 01:44:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:13,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:16,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769583409] [2024-06-28 01:44:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769583409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:16,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948914535] [2024-06-28 01:44:16,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:16,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:16,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:16,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:16,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 433 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:16,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:16,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:16,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:17,447 INFO L124 PetriNetUnfolderBase]: 3473/5189 cut-off events. [2024-06-28 01:44:17,448 INFO L125 PetriNetUnfolderBase]: For 11032/11038 co-relation queries the response was YES. [2024-06-28 01:44:17,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16872 conditions, 5189 events. 3473/5189 cut-off events. For 11032/11038 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 28571 event pairs, 1059 based on Foata normal form. 10/5197 useless extension candidates. Maximal degree in co-relation 16845. Up to 4821 conditions per place. [2024-06-28 01:44:17,470 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 86 selfloop transitions, 24 changer transitions 0/117 dead transitions. [2024-06-28 01:44:17,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 117 transitions, 805 flow [2024-06-28 01:44:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:17,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 01:44:17,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567375886524822 [2024-06-28 01:44:17,472 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 433 flow. Second operand 6 states and 157 transitions. [2024-06-28 01:44:17,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 117 transitions, 805 flow [2024-06-28 01:44:17,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 117 transitions, 766 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:17,481 INFO L231 Difference]: Finished difference. Result has 73 places, 75 transitions, 476 flow [2024-06-28 01:44:17,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=476, PETRI_PLACES=73, PETRI_TRANSITIONS=75} [2024-06-28 01:44:17,482 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2024-06-28 01:44:17,482 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 75 transitions, 476 flow [2024-06-28 01:44:17,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:17,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:17,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:17,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:44:17,483 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 01:44:17,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:17,483 INFO L85 PathProgramCache]: Analyzing trace with hash 521110076, now seen corresponding path program 2 times [2024-06-28 01:44:17,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:17,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501910863] [2024-06-28 01:44:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:17,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:19,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:19,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:19,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501910863] [2024-06-28 01:44:19,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501910863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:19,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:19,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:19,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423861617] [2024-06-28 01:44:19,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:19,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:19,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:19,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:19,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:19,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:19,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 476 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:19,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:19,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:19,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:20,963 INFO L124 PetriNetUnfolderBase]: 3461/5152 cut-off events. [2024-06-28 01:44:20,963 INFO L125 PetriNetUnfolderBase]: For 12328/12328 co-relation queries the response was YES. [2024-06-28 01:44:20,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17049 conditions, 5152 events. 3461/5152 cut-off events. For 12328/12328 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 28141 event pairs, 1085 based on Foata normal form. 2/5149 useless extension candidates. Maximal degree in co-relation 17021. Up to 4805 conditions per place. [2024-06-28 01:44:20,988 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 80 selfloop transitions, 25 changer transitions 0/112 dead transitions. [2024-06-28 01:44:20,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 112 transitions, 786 flow [2024-06-28 01:44:20,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:20,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:44:20,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-28 01:44:20,990 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 476 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:44:20,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 112 transitions, 786 flow [2024-06-28 01:44:20,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 112 transitions, 753 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:20,999 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 502 flow [2024-06-28 01:44:20,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=502, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-06-28 01:44:21,000 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2024-06-28 01:44:21,000 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 502 flow [2024-06-28 01:44:21,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:21,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:21,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:21,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:44:21,001 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 01:44:21,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:21,001 INFO L85 PathProgramCache]: Analyzing trace with hash 842648761, now seen corresponding path program 1 times [2024-06-28 01:44:21,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:21,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449279950] [2024-06-28 01:44:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:21,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:22,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:22,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449279950] [2024-06-28 01:44:22,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449279950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:22,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:22,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:22,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292698907] [2024-06-28 01:44:22,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:22,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:22,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:22,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:22,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:22,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:22,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 502 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:22,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:22,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:22,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:24,822 INFO L124 PetriNetUnfolderBase]: 3957/5920 cut-off events. [2024-06-28 01:44:24,823 INFO L125 PetriNetUnfolderBase]: For 17027/17027 co-relation queries the response was YES. [2024-06-28 01:44:24,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20517 conditions, 5920 events. 3957/5920 cut-off events. For 17027/17027 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 32827 event pairs, 902 based on Foata normal form. 8/5924 useless extension candidates. Maximal degree in co-relation 20488. Up to 4860 conditions per place. [2024-06-28 01:44:24,853 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 126 selfloop transitions, 47 changer transitions 0/180 dead transitions. [2024-06-28 01:44:24,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 180 transitions, 1388 flow [2024-06-28 01:44:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:24,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-28 01:44:24,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877659574468085 [2024-06-28 01:44:24,855 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 502 flow. Second operand 8 states and 221 transitions. [2024-06-28 01:44:24,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 180 transitions, 1388 flow [2024-06-28 01:44:24,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 180 transitions, 1284 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:24,870 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 822 flow [2024-06-28 01:44:24,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=822, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2024-06-28 01:44:24,870 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 32 predicate places. [2024-06-28 01:44:24,871 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 822 flow [2024-06-28 01:44:24,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:24,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:24,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:24,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:44:24,871 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 01:44:24,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:24,872 INFO L85 PathProgramCache]: Analyzing trace with hash -161992485, now seen corresponding path program 2 times [2024-06-28 01:44:24,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:24,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640264291] [2024-06-28 01:44:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:24,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:27,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:27,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640264291] [2024-06-28 01:44:27,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640264291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:27,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:27,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:27,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750468779] [2024-06-28 01:44:27,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:27,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:27,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:27,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:27,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:27,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:27,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 822 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:27,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:27,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:27,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:29,094 INFO L124 PetriNetUnfolderBase]: 4189/6292 cut-off events. [2024-06-28 01:44:29,094 INFO L125 PetriNetUnfolderBase]: For 24224/24230 co-relation queries the response was YES. [2024-06-28 01:44:29,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24476 conditions, 6292 events. 4189/6292 cut-off events. For 24224/24230 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 35417 event pairs, 934 based on Foata normal form. 16/6304 useless extension candidates. Maximal degree in co-relation 24442. Up to 5012 conditions per place. [2024-06-28 01:44:29,125 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 108 selfloop transitions, 55 changer transitions 0/170 dead transitions. [2024-06-28 01:44:29,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 170 transitions, 1440 flow [2024-06-28 01:44:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:29,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 01:44:29,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 01:44:29,127 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 822 flow. Second operand 7 states and 188 transitions. [2024-06-28 01:44:29,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 170 transitions, 1440 flow [2024-06-28 01:44:29,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 170 transitions, 1424 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 01:44:29,152 INFO L231 Difference]: Finished difference. Result has 89 places, 110 transitions, 1001 flow [2024-06-28 01:44:29,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1001, PETRI_PLACES=89, PETRI_TRANSITIONS=110} [2024-06-28 01:44:29,152 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2024-06-28 01:44:29,153 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 110 transitions, 1001 flow [2024-06-28 01:44:29,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:29,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:29,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:29,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:44:29,153 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 01:44:29,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:29,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1040648135, now seen corresponding path program 3 times [2024-06-28 01:44:29,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:29,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812374628] [2024-06-28 01:44:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:31,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:31,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812374628] [2024-06-28 01:44:31,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812374628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:31,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:31,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:31,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013012994] [2024-06-28 01:44:31,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:31,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:31,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:31,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:31,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:31,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 110 transitions, 1001 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:31,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:31,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:31,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:33,423 INFO L124 PetriNetUnfolderBase]: 4305/6432 cut-off events. [2024-06-28 01:44:33,423 INFO L125 PetriNetUnfolderBase]: For 30293/30297 co-relation queries the response was YES. [2024-06-28 01:44:33,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26844 conditions, 6432 events. 4305/6432 cut-off events. For 30293/30297 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 35767 event pairs, 970 based on Foata normal form. 8/6433 useless extension candidates. Maximal degree in co-relation 26807. Up to 5066 conditions per place. [2024-06-28 01:44:33,455 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 108 selfloop transitions, 65 changer transitions 0/180 dead transitions. [2024-06-28 01:44:33,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 180 transitions, 1743 flow [2024-06-28 01:44:33,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 01:44:33,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 01:44:33,457 INFO L175 Difference]: Start difference. First operand has 89 places, 110 transitions, 1001 flow. Second operand 7 states and 188 transitions. [2024-06-28 01:44:33,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 180 transitions, 1743 flow [2024-06-28 01:44:33,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 180 transitions, 1628 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:33,496 INFO L231 Difference]: Finished difference. Result has 92 places, 120 transitions, 1160 flow [2024-06-28 01:44:33,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1160, PETRI_PLACES=92, PETRI_TRANSITIONS=120} [2024-06-28 01:44:33,498 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2024-06-28 01:44:33,498 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 120 transitions, 1160 flow [2024-06-28 01:44:33,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:33,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:33,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:33,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:44:33,499 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 01:44:33,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:33,500 INFO L85 PathProgramCache]: Analyzing trace with hash 15376185, now seen corresponding path program 4 times [2024-06-28 01:44:33,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:33,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101422653] [2024-06-28 01:44:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:33,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:35,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:35,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101422653] [2024-06-28 01:44:35,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101422653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:35,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:35,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:35,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037129800] [2024-06-28 01:44:35,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:35,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:35,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:35,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:35,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:35,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:35,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 120 transitions, 1160 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:35,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:35,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:35,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:37,684 INFO L124 PetriNetUnfolderBase]: 4289/6417 cut-off events. [2024-06-28 01:44:37,684 INFO L125 PetriNetUnfolderBase]: For 31332/31342 co-relation queries the response was YES. [2024-06-28 01:44:37,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26648 conditions, 6417 events. 4289/6417 cut-off events. For 31332/31342 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 35787 event pairs, 930 based on Foata normal form. 14/6424 useless extension candidates. Maximal degree in co-relation 26610. Up to 5059 conditions per place. [2024-06-28 01:44:37,724 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 104 selfloop transitions, 67 changer transitions 0/178 dead transitions. [2024-06-28 01:44:37,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 178 transitions, 1732 flow [2024-06-28 01:44:37,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-28 01:44:37,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5623100303951368 [2024-06-28 01:44:37,726 INFO L175 Difference]: Start difference. First operand has 92 places, 120 transitions, 1160 flow. Second operand 7 states and 185 transitions. [2024-06-28 01:44:37,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 178 transitions, 1732 flow [2024-06-28 01:44:37,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 178 transitions, 1696 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-28 01:44:37,763 INFO L231 Difference]: Finished difference. Result has 98 places, 120 transitions, 1269 flow [2024-06-28 01:44:37,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1269, PETRI_PLACES=98, PETRI_TRANSITIONS=120} [2024-06-28 01:44:37,764 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 47 predicate places. [2024-06-28 01:44:37,764 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 120 transitions, 1269 flow [2024-06-28 01:44:37,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:37,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:37,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:37,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:44:37,764 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 01:44:37,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:37,765 INFO L85 PathProgramCache]: Analyzing trace with hash -397653776, now seen corresponding path program 1 times [2024-06-28 01:44:37,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:37,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583252054] [2024-06-28 01:44:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:37,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:40,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:40,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583252054] [2024-06-28 01:44:40,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583252054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:40,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:40,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233148130] [2024-06-28 01:44:40,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:40,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:40,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:40,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:40,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 120 transitions, 1269 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:40,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:40,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:40,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:42,141 INFO L124 PetriNetUnfolderBase]: 4413/6678 cut-off events. [2024-06-28 01:44:42,141 INFO L125 PetriNetUnfolderBase]: For 37789/37797 co-relation queries the response was YES. [2024-06-28 01:44:42,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28496 conditions, 6678 events. 4413/6678 cut-off events. For 37789/37797 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 37988 event pairs, 1011 based on Foata normal form. 16/6690 useless extension candidates. Maximal degree in co-relation 28455. Up to 5163 conditions per place. [2024-06-28 01:44:42,179 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 113 selfloop transitions, 70 changer transitions 0/190 dead transitions. [2024-06-28 01:44:42,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 190 transitions, 1965 flow [2024-06-28 01:44:42,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-28 01:44:42,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866261398176292 [2024-06-28 01:44:42,181 INFO L175 Difference]: Start difference. First operand has 98 places, 120 transitions, 1269 flow. Second operand 7 states and 193 transitions. [2024-06-28 01:44:42,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 190 transitions, 1965 flow [2024-06-28 01:44:42,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 190 transitions, 1807 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:42,214 INFO L231 Difference]: Finished difference. Result has 99 places, 126 transitions, 1350 flow [2024-06-28 01:44:42,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1350, PETRI_PLACES=99, PETRI_TRANSITIONS=126} [2024-06-28 01:44:42,215 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 48 predicate places. [2024-06-28 01:44:42,215 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 126 transitions, 1350 flow [2024-06-28 01:44:42,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:42,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:42,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:42,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:44:42,216 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 01:44:42,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:42,216 INFO L85 PathProgramCache]: Analyzing trace with hash -726797822, now seen corresponding path program 2 times [2024-06-28 01:44:42,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:42,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49538207] [2024-06-28 01:44:42,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:42,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:45,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:45,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49538207] [2024-06-28 01:44:45,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49538207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:45,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:45,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:45,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632574206] [2024-06-28 01:44:45,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:45,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:45,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:45,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:45,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:45,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:45,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 126 transitions, 1350 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:45,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:45,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:45,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:47,334 INFO L124 PetriNetUnfolderBase]: 4525/6839 cut-off events. [2024-06-28 01:44:47,335 INFO L125 PetriNetUnfolderBase]: For 41491/41497 co-relation queries the response was YES. [2024-06-28 01:44:47,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29344 conditions, 6839 events. 4525/6839 cut-off events. For 41491/41497 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 39056 event pairs, 974 based on Foata normal form. 12/6847 useless extension candidates. Maximal degree in co-relation 29303. Up to 5258 conditions per place. [2024-06-28 01:44:47,379 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 123 selfloop transitions, 75 changer transitions 0/205 dead transitions. [2024-06-28 01:44:47,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 205 transitions, 2112 flow [2024-06-28 01:44:47,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 01:44:47,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-06-28 01:44:47,381 INFO L175 Difference]: Start difference. First operand has 99 places, 126 transitions, 1350 flow. Second operand 8 states and 214 transitions. [2024-06-28 01:44:47,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 205 transitions, 2112 flow [2024-06-28 01:44:47,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 205 transitions, 1882 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:47,431 INFO L231 Difference]: Finished difference. Result has 101 places, 132 transitions, 1370 flow [2024-06-28 01:44:47,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1370, PETRI_PLACES=101, PETRI_TRANSITIONS=132} [2024-06-28 01:44:47,432 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 50 predicate places. [2024-06-28 01:44:47,432 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 132 transitions, 1370 flow [2024-06-28 01:44:47,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:47,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:47,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:47,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:44:47,433 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 01:44:47,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2099849910, now seen corresponding path program 3 times [2024-06-28 01:44:47,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:47,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149529862] [2024-06-28 01:44:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:47,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:49,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:49,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149529862] [2024-06-28 01:44:49,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149529862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:49,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:49,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:49,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861768737] [2024-06-28 01:44:49,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:49,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:49,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:49,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:49,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:49,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:49,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 132 transitions, 1370 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:49,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:49,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:49,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:52,071 INFO L124 PetriNetUnfolderBase]: 4641/7045 cut-off events. [2024-06-28 01:44:52,071 INFO L125 PetriNetUnfolderBase]: For 40154/40162 co-relation queries the response was YES. [2024-06-28 01:44:52,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30204 conditions, 7045 events. 4641/7045 cut-off events. For 40154/40162 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 40688 event pairs, 940 based on Foata normal form. 12/7050 useless extension candidates. Maximal degree in co-relation 30163. Up to 5356 conditions per place. [2024-06-28 01:44:52,113 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 131 selfloop transitions, 85 changer transitions 0/223 dead transitions. [2024-06-28 01:44:52,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 223 transitions, 2214 flow [2024-06-28 01:44:52,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:52,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 01:44:52,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2024-06-28 01:44:52,116 INFO L175 Difference]: Start difference. First operand has 101 places, 132 transitions, 1370 flow. Second operand 9 states and 237 transitions. [2024-06-28 01:44:52,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 223 transitions, 2214 flow [2024-06-28 01:44:52,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 223 transitions, 2094 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:52,156 INFO L231 Difference]: Finished difference. Result has 105 places, 138 transitions, 1509 flow [2024-06-28 01:44:52,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1509, PETRI_PLACES=105, PETRI_TRANSITIONS=138} [2024-06-28 01:44:52,156 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2024-06-28 01:44:52,157 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 138 transitions, 1509 flow [2024-06-28 01:44:52,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:52,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:52,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:52,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:44:52,157 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 01:44:52,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:52,158 INFO L85 PathProgramCache]: Analyzing trace with hash 469312002, now seen corresponding path program 4 times [2024-06-28 01:44:52,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:52,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534968218] [2024-06-28 01:44:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:52,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:54,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:54,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534968218] [2024-06-28 01:44:54,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534968218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:54,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:54,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:54,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599552488] [2024-06-28 01:44:54,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:54,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:54,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:54,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:54,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:54,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:54,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 138 transitions, 1509 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:54,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:54,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:54,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:57,156 INFO L124 PetriNetUnfolderBase]: 4625/6963 cut-off events. [2024-06-28 01:44:57,157 INFO L125 PetriNetUnfolderBase]: For 45326/45330 co-relation queries the response was YES. [2024-06-28 01:44:57,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30366 conditions, 6963 events. 4625/6963 cut-off events. For 45326/45330 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39463 event pairs, 1014 based on Foata normal form. 8/6964 useless extension candidates. Maximal degree in co-relation 30324. Up to 5343 conditions per place. [2024-06-28 01:44:57,206 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 117 selfloop transitions, 83 changer transitions 0/207 dead transitions. [2024-06-28 01:44:57,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 207 transitions, 2137 flow [2024-06-28 01:44:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:57,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:44:57,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-06-28 01:44:57,208 INFO L175 Difference]: Start difference. First operand has 105 places, 138 transitions, 1509 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:44:57,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 207 transitions, 2137 flow [2024-06-28 01:44:57,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 207 transitions, 1932 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:57,259 INFO L231 Difference]: Finished difference. Result has 106 places, 138 transitions, 1481 flow [2024-06-28 01:44:57,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1481, PETRI_PLACES=106, PETRI_TRANSITIONS=138} [2024-06-28 01:44:57,267 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 55 predicate places. [2024-06-28 01:44:57,267 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 138 transitions, 1481 flow [2024-06-28 01:44:57,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:57,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:57,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:57,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:44:57,268 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 01:44:57,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash 476940699, now seen corresponding path program 1 times [2024-06-28 01:44:57,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:57,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755220123] [2024-06-28 01:44:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:57,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:59,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:59,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:59,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755220123] [2024-06-28 01:44:59,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755220123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:59,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:59,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:59,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143624164] [2024-06-28 01:44:59,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:59,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:59,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:59,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:59,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:59,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:44:59,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 138 transitions, 1481 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:59,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:59,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:44:59,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:01,816 INFO L124 PetriNetUnfolderBase]: 4617/7235 cut-off events. [2024-06-28 01:45:01,817 INFO L125 PetriNetUnfolderBase]: For 46470/46472 co-relation queries the response was YES. [2024-06-28 01:45:01,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30419 conditions, 7235 events. 4617/7235 cut-off events. For 46470/46472 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 42928 event pairs, 1445 based on Foata normal form. 4/7237 useless extension candidates. Maximal degree in co-relation 30376. Up to 6499 conditions per place. [2024-06-28 01:45:01,864 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 167 selfloop transitions, 21 changer transitions 0/195 dead transitions. [2024-06-28 01:45:01,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 195 transitions, 2056 flow [2024-06-28 01:45:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:45:01,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:45:01,867 INFO L175 Difference]: Start difference. First operand has 106 places, 138 transitions, 1481 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:45:01,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 195 transitions, 2056 flow [2024-06-28 01:45:01,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 195 transitions, 1831 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:01,917 INFO L231 Difference]: Finished difference. Result has 107 places, 145 transitions, 1384 flow [2024-06-28 01:45:01,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1384, PETRI_PLACES=107, PETRI_TRANSITIONS=145} [2024-06-28 01:45:01,923 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 56 predicate places. [2024-06-28 01:45:01,924 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 145 transitions, 1384 flow [2024-06-28 01:45:01,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:01,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:01,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:01,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:45:01,924 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:01,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:01,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1626280503, now seen corresponding path program 1 times [2024-06-28 01:45:01,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:01,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453201058] [2024-06-28 01:45:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:01,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:03,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:03,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:03,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453201058] [2024-06-28 01:45:03,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453201058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:03,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:03,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:45:03,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698198690] [2024-06-28 01:45:03,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:03,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:45:03,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:03,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:45:03,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:45:03,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:45:03,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 145 transitions, 1384 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:03,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:03,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:45:03,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:04,944 INFO L124 PetriNetUnfolderBase]: 4315/6829 cut-off events. [2024-06-28 01:45:04,945 INFO L125 PetriNetUnfolderBase]: For 42763/42812 co-relation queries the response was YES. [2024-06-28 01:45:04,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28616 conditions, 6829 events. 4315/6829 cut-off events. For 42763/42812 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 41079 event pairs, 1338 based on Foata normal form. 22/6829 useless extension candidates. Maximal degree in co-relation 28571. Up to 6071 conditions per place. [2024-06-28 01:45:04,991 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 143 selfloop transitions, 10 changer transitions 0/168 dead transitions. [2024-06-28 01:45:04,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 168 transitions, 1774 flow [2024-06-28 01:45:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:45:04,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:45:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 01:45:04,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:45:04,993 INFO L175 Difference]: Start difference. First operand has 107 places, 145 transitions, 1384 flow. Second operand 5 states and 120 transitions. [2024-06-28 01:45:04,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 168 transitions, 1774 flow [2024-06-28 01:45:05,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 168 transitions, 1712 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:05,043 INFO L231 Difference]: Finished difference. Result has 107 places, 149 transitions, 1391 flow [2024-06-28 01:45:05,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1391, PETRI_PLACES=107, PETRI_TRANSITIONS=149} [2024-06-28 01:45:05,043 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 56 predicate places. [2024-06-28 01:45:05,044 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 149 transitions, 1391 flow [2024-06-28 01:45:05,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:05,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:05,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:05,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:45:05,044 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 01:45:05,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:05,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1171481088, now seen corresponding path program 1 times [2024-06-28 01:45:05,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:05,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304104414] [2024-06-28 01:45:05,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:05,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:07,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:07,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304104414] [2024-06-28 01:45:07,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304104414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:07,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:07,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:45:07,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040503893] [2024-06-28 01:45:07,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:07,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:45:07,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:07,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:45:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:45:07,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:45:07,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 149 transitions, 1391 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:07,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:07,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:45:07,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:09,408 INFO L124 PetriNetUnfolderBase]: 4661/7085 cut-off events. [2024-06-28 01:45:09,408 INFO L125 PetriNetUnfolderBase]: For 46095/46113 co-relation queries the response was YES. [2024-06-28 01:45:09,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31065 conditions, 7085 events. 4661/7085 cut-off events. For 46095/46113 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 41066 event pairs, 680 based on Foata normal form. 20/7103 useless extension candidates. Maximal degree in co-relation 31019. Up to 6047 conditions per place. [2024-06-28 01:45:09,459 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 165 selfloop transitions, 37 changer transitions 0/209 dead transitions. [2024-06-28 01:45:09,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 209 transitions, 2085 flow [2024-06-28 01:45:09,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:45:09,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:45:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:45:09,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:45:09,461 INFO L175 Difference]: Start difference. First operand has 107 places, 149 transitions, 1391 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:45:09,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 209 transitions, 2085 flow [2024-06-28 01:45:09,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 209 transitions, 2044 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 01:45:09,516 INFO L231 Difference]: Finished difference. Result has 111 places, 153 transitions, 1479 flow [2024-06-28 01:45:09,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1479, PETRI_PLACES=111, PETRI_TRANSITIONS=153} [2024-06-28 01:45:09,517 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 60 predicate places. [2024-06-28 01:45:09,517 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 153 transitions, 1479 flow [2024-06-28 01:45:09,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:09,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:09,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:09,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:45:09,518 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 01:45:09,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:09,518 INFO L85 PathProgramCache]: Analyzing trace with hash 563357708, now seen corresponding path program 2 times [2024-06-28 01:45:09,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:09,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581662574] [2024-06-28 01:45:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:09,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:12,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:12,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581662574] [2024-06-28 01:45:12,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581662574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:12,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:12,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:45:12,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820835555] [2024-06-28 01:45:12,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:12,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:45:12,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:12,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:45:12,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:45:12,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:45:12,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 153 transitions, 1479 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:12,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:12,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:45:12,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:13,884 INFO L124 PetriNetUnfolderBase]: 4653/7046 cut-off events. [2024-06-28 01:45:13,884 INFO L125 PetriNetUnfolderBase]: For 49721/49731 co-relation queries the response was YES. [2024-06-28 01:45:13,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31758 conditions, 7046 events. 4653/7046 cut-off events. For 49721/49731 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 40360 event pairs, 962 based on Foata normal form. 12/7056 useless extension candidates. Maximal degree in co-relation 31711. Up to 6233 conditions per place. [2024-06-28 01:45:13,940 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 163 selfloop transitions, 38 changer transitions 0/208 dead transitions. [2024-06-28 01:45:13,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 208 transitions, 2067 flow [2024-06-28 01:45:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:45:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:45:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 01:45:13,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547112462006079 [2024-06-28 01:45:13,946 INFO L175 Difference]: Start difference. First operand has 111 places, 153 transitions, 1479 flow. Second operand 7 states and 180 transitions. [2024-06-28 01:45:13,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 208 transitions, 2067 flow [2024-06-28 01:45:14,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 208 transitions, 2012 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:45:14,003 INFO L231 Difference]: Finished difference. Result has 115 places, 153 transitions, 1509 flow [2024-06-28 01:45:14,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1509, PETRI_PLACES=115, PETRI_TRANSITIONS=153} [2024-06-28 01:45:14,004 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 64 predicate places. [2024-06-28 01:45:14,004 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 153 transitions, 1509 flow [2024-06-28 01:45:14,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:14,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:14,005 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 01:45:14,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:45:14,005 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 01:45:14,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:14,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2041077607, now seen corresponding path program 1 times [2024-06-28 01:45:14,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:14,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695538433] [2024-06-28 01:45:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:14,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:16,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:16,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695538433] [2024-06-28 01:45:16,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695538433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:16,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:16,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:16,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240508324] [2024-06-28 01:45:16,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:16,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:16,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:16,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:16,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:16,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:45:16,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 153 transitions, 1509 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:16,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:16,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:45:16,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:18,770 INFO L124 PetriNetUnfolderBase]: 5033/7674 cut-off events. [2024-06-28 01:45:18,770 INFO L125 PetriNetUnfolderBase]: For 63747/63751 co-relation queries the response was YES. [2024-06-28 01:45:18,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35178 conditions, 7674 events. 5033/7674 cut-off events. For 63747/63751 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 44552 event pairs, 728 based on Foata normal form. 16/7687 useless extension candidates. Maximal degree in co-relation 35129. Up to 4597 conditions per place. [2024-06-28 01:45:18,827 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 144 selfloop transitions, 80 changer transitions 0/231 dead transitions. [2024-06-28 01:45:18,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 231 transitions, 2321 flow [2024-06-28 01:45:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-28 01:45:18,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-06-28 01:45:18,829 INFO L175 Difference]: Start difference. First operand has 115 places, 153 transitions, 1509 flow. Second operand 8 states and 218 transitions. [2024-06-28 01:45:18,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 231 transitions, 2321 flow [2024-06-28 01:45:18,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 231 transitions, 2236 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:18,907 INFO L231 Difference]: Finished difference. Result has 117 places, 155 transitions, 1628 flow [2024-06-28 01:45:18,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1628, PETRI_PLACES=117, PETRI_TRANSITIONS=155} [2024-06-28 01:45:18,908 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 66 predicate places. [2024-06-28 01:45:18,908 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 155 transitions, 1628 flow [2024-06-28 01:45:18,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:18,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:18,908 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 01:45:18,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:45:18,909 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 01:45:18,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:18,909 INFO L85 PathProgramCache]: Analyzing trace with hash 284369737, now seen corresponding path program 2 times [2024-06-28 01:45:18,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:18,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077877368] [2024-06-28 01:45:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:18,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:21,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:21,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077877368] [2024-06-28 01:45:21,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077877368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:21,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:21,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896495643] [2024-06-28 01:45:21,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:21,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:21,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:21,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:21,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:21,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:45:21,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 155 transitions, 1628 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:21,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:21,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:45:21,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:23,731 INFO L124 PetriNetUnfolderBase]: 5309/8113 cut-off events. [2024-06-28 01:45:23,732 INFO L125 PetriNetUnfolderBase]: For 74958/74966 co-relation queries the response was YES. [2024-06-28 01:45:23,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38238 conditions, 8113 events. 5309/8113 cut-off events. For 74958/74966 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 48012 event pairs, 1090 based on Foata normal form. 28/8138 useless extension candidates. Maximal degree in co-relation 38188. Up to 5957 conditions per place. [2024-06-28 01:45:23,782 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 138 selfloop transitions, 85 changer transitions 0/230 dead transitions. [2024-06-28 01:45:23,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 230 transitions, 2356 flow [2024-06-28 01:45:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 01:45:23,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-06-28 01:45:23,784 INFO L175 Difference]: Start difference. First operand has 117 places, 155 transitions, 1628 flow. Second operand 8 states and 215 transitions. [2024-06-28 01:45:23,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 230 transitions, 2356 flow [2024-06-28 01:45:23,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 230 transitions, 2260 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:23,863 INFO L231 Difference]: Finished difference. Result has 121 places, 157 transitions, 1746 flow [2024-06-28 01:45:23,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1746, PETRI_PLACES=121, PETRI_TRANSITIONS=157} [2024-06-28 01:45:23,864 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 70 predicate places. [2024-06-28 01:45:23,864 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 157 transitions, 1746 flow [2024-06-28 01:45:23,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:23,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:23,864 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 01:45:23,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:45:23,864 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 01:45:23,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:23,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1952511847, now seen corresponding path program 3 times [2024-06-28 01:45:23,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:23,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975246023] [2024-06-28 01:45:23,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:23,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:26,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:26,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975246023] [2024-06-28 01:45:26,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975246023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:26,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:26,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:26,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622846571] [2024-06-28 01:45:26,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:26,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:26,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:26,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:26,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:26,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:45:26,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 157 transitions, 1746 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:26,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:26,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:45:26,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:28,558 INFO L124 PetriNetUnfolderBase]: 5485/8403 cut-off events. [2024-06-28 01:45:28,558 INFO L125 PetriNetUnfolderBase]: For 79895/79899 co-relation queries the response was YES. [2024-06-28 01:45:28,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41022 conditions, 8403 events. 5485/8403 cut-off events. For 79895/79899 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 50239 event pairs, 1130 based on Foata normal form. 16/8416 useless extension candidates. Maximal degree in co-relation 40970. Up to 5929 conditions per place. [2024-06-28 01:45:28,709 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 140 selfloop transitions, 86 changer transitions 0/233 dead transitions. [2024-06-28 01:45:28,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 233 transitions, 2474 flow [2024-06-28 01:45:28,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:28,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-28 01:45:28,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-06-28 01:45:28,711 INFO L175 Difference]: Start difference. First operand has 121 places, 157 transitions, 1746 flow. Second operand 8 states and 218 transitions. [2024-06-28 01:45:28,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 233 transitions, 2474 flow [2024-06-28 01:45:28,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 233 transitions, 2302 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:28,796 INFO L231 Difference]: Finished difference. Result has 123 places, 158 transitions, 1774 flow [2024-06-28 01:45:28,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1774, PETRI_PLACES=123, PETRI_TRANSITIONS=158} [2024-06-28 01:45:28,797 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 72 predicate places. [2024-06-28 01:45:28,797 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 158 transitions, 1774 flow [2024-06-28 01:45:28,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:28,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:28,797 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 01:45:28,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:45:28,797 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 01:45:28,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:28,797 INFO L85 PathProgramCache]: Analyzing trace with hash -51694963, now seen corresponding path program 4 times [2024-06-28 01:45:28,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:28,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757965792] [2024-06-28 01:45:28,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:28,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:31,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:31,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757965792] [2024-06-28 01:45:31,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757965792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:31,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:31,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:31,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295532604] [2024-06-28 01:45:31,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:31,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:31,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:31,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:31,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:45:31,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 158 transitions, 1774 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:31,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:31,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:45:31,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:33,902 INFO L124 PetriNetUnfolderBase]: 5807/8998 cut-off events. [2024-06-28 01:45:33,902 INFO L125 PetriNetUnfolderBase]: For 93402/93412 co-relation queries the response was YES. [2024-06-28 01:45:33,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44050 conditions, 8998 events. 5807/8998 cut-off events. For 93402/93412 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 55455 event pairs, 863 based on Foata normal form. 24/9019 useless extension candidates. Maximal degree in co-relation 43997. Up to 6213 conditions per place. [2024-06-28 01:45:33,966 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 146 selfloop transitions, 88 changer transitions 0/241 dead transitions. [2024-06-28 01:45:33,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 241 transitions, 2646 flow [2024-06-28 01:45:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-06-28 01:45:33,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-06-28 01:45:33,968 INFO L175 Difference]: Start difference. First operand has 123 places, 158 transitions, 1774 flow. Second operand 8 states and 224 transitions. [2024-06-28 01:45:33,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 241 transitions, 2646 flow [2024-06-28 01:45:34,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 241 transitions, 2468 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:34,091 INFO L231 Difference]: Finished difference. Result has 125 places, 160 transitions, 1824 flow [2024-06-28 01:45:34,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1824, PETRI_PLACES=125, PETRI_TRANSITIONS=160} [2024-06-28 01:45:34,092 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 74 predicate places. [2024-06-28 01:45:34,092 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 160 transitions, 1824 flow [2024-06-28 01:45:34,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:34,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:34,093 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 01:45:34,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:45:34,093 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 01:45:34,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:34,094 INFO L85 PathProgramCache]: Analyzing trace with hash -431208909, now seen corresponding path program 5 times [2024-06-28 01:45:34,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:34,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125201725] [2024-06-28 01:45:34,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:34,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:37,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:37,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125201725] [2024-06-28 01:45:37,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125201725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:37,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:37,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:37,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536550953] [2024-06-28 01:45:37,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:37,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:37,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:37,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:37,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:37,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:45:37,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 160 transitions, 1824 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:37,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:37,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:45:37,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:40,227 INFO L124 PetriNetUnfolderBase]: 6033/9297 cut-off events. [2024-06-28 01:45:40,227 INFO L125 PetriNetUnfolderBase]: For 100963/100971 co-relation queries the response was YES. [2024-06-28 01:45:40,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45986 conditions, 9297 events. 6033/9297 cut-off events. For 100963/100971 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 57201 event pairs, 1242 based on Foata normal form. 24/9318 useless extension candidates. Maximal degree in co-relation 45932. Up to 7175 conditions per place. [2024-06-28 01:45:40,288 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 157 selfloop transitions, 84 changer transitions 0/248 dead transitions. [2024-06-28 01:45:40,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 248 transitions, 2638 flow [2024-06-28 01:45:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-28 01:45:40,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-06-28 01:45:40,290 INFO L175 Difference]: Start difference. First operand has 125 places, 160 transitions, 1824 flow. Second operand 9 states and 240 transitions. [2024-06-28 01:45:40,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 248 transitions, 2638 flow [2024-06-28 01:45:40,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 248 transitions, 2527 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:40,428 INFO L231 Difference]: Finished difference. Result has 130 places, 161 transitions, 1916 flow [2024-06-28 01:45:40,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1916, PETRI_PLACES=130, PETRI_TRANSITIONS=161} [2024-06-28 01:45:40,433 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 79 predicate places. [2024-06-28 01:45:40,433 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 161 transitions, 1916 flow [2024-06-28 01:45:40,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:40,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:40,434 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 01:45:40,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:45:40,434 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 01:45:40,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:40,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1621662293, now seen corresponding path program 6 times [2024-06-28 01:45:40,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:40,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884881349] [2024-06-28 01:45:40,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:40,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:43,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:43,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884881349] [2024-06-28 01:45:43,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884881349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:43,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:43,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:43,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010331640] [2024-06-28 01:45:43,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:43,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:43,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:43,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:43,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:43,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:45:43,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 161 transitions, 1916 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:43,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:43,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:45:43,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:45,693 INFO L124 PetriNetUnfolderBase]: 6259/9690 cut-off events. [2024-06-28 01:45:45,693 INFO L125 PetriNetUnfolderBase]: For 111463/111473 co-relation queries the response was YES. [2024-06-28 01:45:45,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48937 conditions, 9690 events. 6259/9690 cut-off events. For 111463/111473 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 60467 event pairs, 1235 based on Foata normal form. 28/9715 useless extension candidates. Maximal degree in co-relation 48881. Up to 7521 conditions per place. [2024-06-28 01:45:45,766 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 148 selfloop transitions, 85 changer transitions 0/240 dead transitions. [2024-06-28 01:45:45,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 240 transitions, 2680 flow [2024-06-28 01:45:45,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:45,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-28 01:45:45,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5824468085106383 [2024-06-28 01:45:45,768 INFO L175 Difference]: Start difference. First operand has 130 places, 161 transitions, 1916 flow. Second operand 8 states and 219 transitions. [2024-06-28 01:45:45,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 240 transitions, 2680 flow [2024-06-28 01:45:45,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 240 transitions, 2509 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:45,945 INFO L231 Difference]: Finished difference. Result has 131 places, 162 transitions, 1952 flow [2024-06-28 01:45:45,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1952, PETRI_PLACES=131, PETRI_TRANSITIONS=162} [2024-06-28 01:45:45,946 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 80 predicate places. [2024-06-28 01:45:45,946 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 162 transitions, 1952 flow [2024-06-28 01:45:45,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:45,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:45,952 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 01:45:45,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:45:45,952 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:45,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:45,953 INFO L85 PathProgramCache]: Analyzing trace with hash 500189512, now seen corresponding path program 1 times [2024-06-28 01:45:45,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:45,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133351644] [2024-06-28 01:45:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:45,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:48,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:48,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133351644] [2024-06-28 01:45:48,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133351644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:48,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:48,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:45:48,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360816592] [2024-06-28 01:45:48,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:48,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:45:48,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:48,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:45:48,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:45:48,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:45:48,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 162 transitions, 1952 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:48,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:48,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:45:48,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:49,973 INFO L124 PetriNetUnfolderBase]: 5957/9263 cut-off events. [2024-06-28 01:45:49,973 INFO L125 PetriNetUnfolderBase]: For 108692/108719 co-relation queries the response was YES. [2024-06-28 01:45:50,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47457 conditions, 9263 events. 5957/9263 cut-off events. For 108692/108719 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 58663 event pairs, 1400 based on Foata normal form. 12/9201 useless extension candidates. Maximal degree in co-relation 47400. Up to 8509 conditions per place. [2024-06-28 01:45:50,045 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 170 selfloop transitions, 17 changer transitions 0/204 dead transitions. [2024-06-28 01:45:50,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 204 transitions, 2482 flow [2024-06-28 01:45:50,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:45:50,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:45:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:45:50,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-28 01:45:50,047 INFO L175 Difference]: Start difference. First operand has 131 places, 162 transitions, 1952 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:45:50,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 204 transitions, 2482 flow [2024-06-28 01:45:50,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 204 transitions, 2307 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:50,243 INFO L231 Difference]: Finished difference. Result has 131 places, 166 transitions, 1865 flow [2024-06-28 01:45:50,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1865, PETRI_PLACES=131, PETRI_TRANSITIONS=166} [2024-06-28 01:45:50,244 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 80 predicate places. [2024-06-28 01:45:50,244 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 166 transitions, 1865 flow [2024-06-28 01:45:50,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:50,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:50,244 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 01:45:50,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:45:50,244 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 01:45:50,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:50,245 INFO L85 PathProgramCache]: Analyzing trace with hash 37330209, now seen corresponding path program 7 times [2024-06-28 01:45:50,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:50,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116552958] [2024-06-28 01:45:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:50,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:53,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:53,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116552958] [2024-06-28 01:45:53,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116552958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:53,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:53,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:53,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086781351] [2024-06-28 01:45:53,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:53,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:53,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:53,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:45:53,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 166 transitions, 1865 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:53,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:53,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:45:53,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:56,016 INFO L124 PetriNetUnfolderBase]: 6531/10003 cut-off events. [2024-06-28 01:45:56,016 INFO L125 PetriNetUnfolderBase]: For 118039/118043 co-relation queries the response was YES. [2024-06-28 01:45:56,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50803 conditions, 10003 events. 6531/10003 cut-off events. For 118039/118043 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 61793 event pairs, 1258 based on Foata normal form. 22/10018 useless extension candidates. Maximal degree in co-relation 50745. Up to 7935 conditions per place. [2024-06-28 01:45:56,104 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 159 selfloop transitions, 86 changer transitions 0/252 dead transitions. [2024-06-28 01:45:56,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 252 transitions, 2711 flow [2024-06-28 01:45:56,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:56,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:45:56,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5626477541371159 [2024-06-28 01:45:56,106 INFO L175 Difference]: Start difference. First operand has 131 places, 166 transitions, 1865 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:45:56,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 252 transitions, 2711 flow [2024-06-28 01:45:56,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 252 transitions, 2634 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:56,344 INFO L231 Difference]: Finished difference. Result has 135 places, 167 transitions, 1999 flow [2024-06-28 01:45:56,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1999, PETRI_PLACES=135, PETRI_TRANSITIONS=167} [2024-06-28 01:45:56,349 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 84 predicate places. [2024-06-28 01:45:56,349 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 167 transitions, 1999 flow [2024-06-28 01:45:56,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:56,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:56,349 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 01:45:56,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:45:56,349 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 01:45:56,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:56,350 INFO L85 PathProgramCache]: Analyzing trace with hash -257687793, now seen corresponding path program 8 times [2024-06-28 01:45:56,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:56,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764055062] [2024-06-28 01:45:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:56,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:59,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:59,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764055062] [2024-06-28 01:45:59,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764055062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:59,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:59,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:59,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663607568] [2024-06-28 01:45:59,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:59,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:59,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:59,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:59,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:59,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:45:59,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 167 transitions, 1999 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:59,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:59,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:45:59,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:02,425 INFO L124 PetriNetUnfolderBase]: 6495/10009 cut-off events. [2024-06-28 01:46:02,425 INFO L125 PetriNetUnfolderBase]: For 120678/120686 co-relation queries the response was YES. [2024-06-28 01:46:02,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51461 conditions, 10009 events. 6495/10009 cut-off events. For 120678/120686 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 62381 event pairs, 1177 based on Foata normal form. 26/10028 useless extension candidates. Maximal degree in co-relation 51403. Up to 7879 conditions per place. [2024-06-28 01:46:02,515 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 171 selfloop transitions, 88 changer transitions 0/266 dead transitions. [2024-06-28 01:46:02,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 266 transitions, 2901 flow [2024-06-28 01:46:02,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:02,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-28 01:46:02,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595744680851064 [2024-06-28 01:46:02,517 INFO L175 Difference]: Start difference. First operand has 135 places, 167 transitions, 1999 flow. Second operand 10 states and 263 transitions. [2024-06-28 01:46:02,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 266 transitions, 2901 flow [2024-06-28 01:46:02,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 266 transitions, 2718 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:02,740 INFO L231 Difference]: Finished difference. Result has 138 places, 167 transitions, 2001 flow [2024-06-28 01:46:02,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2001, PETRI_PLACES=138, PETRI_TRANSITIONS=167} [2024-06-28 01:46:02,743 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 87 predicate places. [2024-06-28 01:46:02,743 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 167 transitions, 2001 flow [2024-06-28 01:46:02,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:02,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:02,743 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 01:46:02,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:46:02,744 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:02,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:02,744 INFO L85 PathProgramCache]: Analyzing trace with hash 37545690, now seen corresponding path program 1 times [2024-06-28 01:46:02,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:02,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782154767] [2024-06-28 01:46:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:02,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:06,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:06,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782154767] [2024-06-28 01:46:06,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782154767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:06,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:06,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:06,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489044195] [2024-06-28 01:46:06,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:06,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:06,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:06,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:06,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:06,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:46:06,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 167 transitions, 2001 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:06,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:06,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:46:06,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:09,104 INFO L124 PetriNetUnfolderBase]: 6545/10006 cut-off events. [2024-06-28 01:46:09,104 INFO L125 PetriNetUnfolderBase]: For 115797/115801 co-relation queries the response was YES. [2024-06-28 01:46:09,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51573 conditions, 10006 events. 6545/10006 cut-off events. For 115797/115801 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 61592 event pairs, 1266 based on Foata normal form. 6/10005 useless extension candidates. Maximal degree in co-relation 51514. Up to 8229 conditions per place. [2024-06-28 01:46:09,186 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 154 selfloop transitions, 91 changer transitions 0/252 dead transitions. [2024-06-28 01:46:09,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 252 transitions, 2876 flow [2024-06-28 01:46:09,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:46:09,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-28 01:46:09,188 INFO L175 Difference]: Start difference. First operand has 138 places, 167 transitions, 2001 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:46:09,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 252 transitions, 2876 flow [2024-06-28 01:46:09,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 252 transitions, 2664 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:09,391 INFO L231 Difference]: Finished difference. Result has 139 places, 173 transitions, 2073 flow [2024-06-28 01:46:09,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1795, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2073, PETRI_PLACES=139, PETRI_TRANSITIONS=173} [2024-06-28 01:46:09,392 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 88 predicate places. [2024-06-28 01:46:09,392 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 173 transitions, 2073 flow [2024-06-28 01:46:09,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:09,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:09,392 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 01:46:09,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:46:09,393 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 01:46:09,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1487453252, now seen corresponding path program 2 times [2024-06-28 01:46:09,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:09,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860647681] [2024-06-28 01:46:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:09,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:12,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:12,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860647681] [2024-06-28 01:46:12,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860647681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:12,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:12,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:12,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755475687] [2024-06-28 01:46:12,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:12,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:12,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:12,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:12,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:13,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:46:13,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 173 transitions, 2073 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:13,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:13,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:46:13,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:15,581 INFO L124 PetriNetUnfolderBase]: 6653/10181 cut-off events. [2024-06-28 01:46:15,581 INFO L125 PetriNetUnfolderBase]: For 119356/119364 co-relation queries the response was YES. [2024-06-28 01:46:15,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53067 conditions, 10181 events. 6653/10181 cut-off events. For 119356/119364 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 62880 event pairs, 1227 based on Foata normal form. 10/10184 useless extension candidates. Maximal degree in co-relation 53006. Up to 8341 conditions per place. [2024-06-28 01:46:15,797 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 155 selfloop transitions, 98 changer transitions 0/260 dead transitions. [2024-06-28 01:46:15,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 260 transitions, 2999 flow [2024-06-28 01:46:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:46:15,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-28 01:46:15,799 INFO L175 Difference]: Start difference. First operand has 139 places, 173 transitions, 2073 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:46:15,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 260 transitions, 2999 flow [2024-06-28 01:46:15,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 260 transitions, 2789 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:15,987 INFO L231 Difference]: Finished difference. Result has 143 places, 181 transitions, 2196 flow [2024-06-28 01:46:15,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2196, PETRI_PLACES=143, PETRI_TRANSITIONS=181} [2024-06-28 01:46:15,988 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 92 predicate places. [2024-06-28 01:46:15,988 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 181 transitions, 2196 flow [2024-06-28 01:46:15,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:15,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:15,988 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 01:46:15,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:46:16,016 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 01:46:16,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1221755972, now seen corresponding path program 3 times [2024-06-28 01:46:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:16,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072453638] [2024-06-28 01:46:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:16,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:19,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:19,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072453638] [2024-06-28 01:46:19,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072453638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:19,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:19,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:19,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102331997] [2024-06-28 01:46:19,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:19,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:19,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:19,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:19,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:19,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:46:19,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 181 transitions, 2196 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:19,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:19,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:46:19,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:21,907 INFO L124 PetriNetUnfolderBase]: 6645/10174 cut-off events. [2024-06-28 01:46:21,907 INFO L125 PetriNetUnfolderBase]: For 124779/124787 co-relation queries the response was YES. [2024-06-28 01:46:21,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53950 conditions, 10174 events. 6645/10174 cut-off events. For 124779/124787 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 62861 event pairs, 1235 based on Foata normal form. 10/10177 useless extension candidates. Maximal degree in co-relation 53887. Up to 8329 conditions per place. [2024-06-28 01:46:21,990 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 157 selfloop transitions, 112 changer transitions 0/276 dead transitions. [2024-06-28 01:46:21,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 276 transitions, 3296 flow [2024-06-28 01:46:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:46:21,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-28 01:46:21,993 INFO L175 Difference]: Start difference. First operand has 143 places, 181 transitions, 2196 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:46:21,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 276 transitions, 3296 flow [2024-06-28 01:46:22,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 276 transitions, 3050 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:22,212 INFO L231 Difference]: Finished difference. Result has 148 places, 197 transitions, 2502 flow [2024-06-28 01:46:22,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2502, PETRI_PLACES=148, PETRI_TRANSITIONS=197} [2024-06-28 01:46:22,213 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 97 predicate places. [2024-06-28 01:46:22,213 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 197 transitions, 2502 flow [2024-06-28 01:46:22,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:22,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:22,214 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 01:46:22,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:46:22,214 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 01:46:22,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:22,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1221429542, now seen corresponding path program 4 times [2024-06-28 01:46:22,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:22,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539349331] [2024-06-28 01:46:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:22,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:25,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:25,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539349331] [2024-06-28 01:46:25,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539349331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:25,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:25,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:25,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201214915] [2024-06-28 01:46:25,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:25,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:25,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:25,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:25,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:25,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:46:25,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 197 transitions, 2502 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:25,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:25,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:46:25,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:28,315 INFO L124 PetriNetUnfolderBase]: 6763/10375 cut-off events. [2024-06-28 01:46:28,315 INFO L125 PetriNetUnfolderBase]: For 131000/131008 co-relation queries the response was YES. [2024-06-28 01:46:28,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56066 conditions, 10375 events. 6763/10375 cut-off events. For 131000/131008 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 64401 event pairs, 1045 based on Foata normal form. 10/10378 useless extension candidates. Maximal degree in co-relation 56000. Up to 7955 conditions per place. [2024-06-28 01:46:28,409 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 155 selfloop transitions, 122 changer transitions 0/284 dead transitions. [2024-06-28 01:46:28,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 284 transitions, 3460 flow [2024-06-28 01:46:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 01:46:28,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2024-06-28 01:46:28,411 INFO L175 Difference]: Start difference. First operand has 148 places, 197 transitions, 2502 flow. Second operand 9 states and 237 transitions. [2024-06-28 01:46:28,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 284 transitions, 3460 flow [2024-06-28 01:46:28,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 284 transitions, 3265 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 01:46:28,722 INFO L231 Difference]: Finished difference. Result has 154 places, 202 transitions, 2685 flow [2024-06-28 01:46:28,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2685, PETRI_PLACES=154, PETRI_TRANSITIONS=202} [2024-06-28 01:46:28,722 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 103 predicate places. [2024-06-28 01:46:28,723 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 202 transitions, 2685 flow [2024-06-28 01:46:28,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:28,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:28,723 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 01:46:28,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:46:28,723 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:28,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:28,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1953262432, now seen corresponding path program 2 times [2024-06-28 01:46:28,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:28,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489596068] [2024-06-28 01:46:28,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:28,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:30,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:30,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489596068] [2024-06-28 01:46:30,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489596068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:30,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:30,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:46:30,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713554165] [2024-06-28 01:46:30,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:30,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:46:30,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:30,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:46:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:46:30,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:46:30,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 202 transitions, 2685 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:30,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:30,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:46:30,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:33,049 INFO L124 PetriNetUnfolderBase]: 6502/10203 cut-off events. [2024-06-28 01:46:33,050 INFO L125 PetriNetUnfolderBase]: For 140025/140097 co-relation queries the response was YES. [2024-06-28 01:46:33,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55071 conditions, 10203 events. 6502/10203 cut-off events. For 140025/140097 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 66132 event pairs, 1339 based on Foata normal form. 53/10178 useless extension candidates. Maximal degree in co-relation 55003. Up to 9254 conditions per place. [2024-06-28 01:46:33,141 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 206 selfloop transitions, 26 changer transitions 0/249 dead transitions. [2024-06-28 01:46:33,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 249 transitions, 3427 flow [2024-06-28 01:46:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:46:33,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:46:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:46:33,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-28 01:46:33,144 INFO L175 Difference]: Start difference. First operand has 154 places, 202 transitions, 2685 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:46:33,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 249 transitions, 3427 flow [2024-06-28 01:46:33,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 249 transitions, 3252 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:33,420 INFO L231 Difference]: Finished difference. Result has 159 places, 217 transitions, 2788 flow [2024-06-28 01:46:33,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2788, PETRI_PLACES=159, PETRI_TRANSITIONS=217} [2024-06-28 01:46:33,421 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 108 predicate places. [2024-06-28 01:46:33,422 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 217 transitions, 2788 flow [2024-06-28 01:46:33,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:33,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:33,422 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 01:46:33,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:46:33,422 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:33,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:33,423 INFO L85 PathProgramCache]: Analyzing trace with hash 505909384, now seen corresponding path program 1 times [2024-06-28 01:46:33,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:33,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858752484] [2024-06-28 01:46:33,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:33,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:35,355 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 01:46:35,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:35,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858752484] [2024-06-28 01:46:35,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858752484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:35,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:35,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:46:35,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570007646] [2024-06-28 01:46:35,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:35,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:46:35,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:35,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:46:35,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:46:35,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:46:35,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 217 transitions, 2788 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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 01:46:35,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:35,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:46:35,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:37,633 INFO L124 PetriNetUnfolderBase]: 6886/10940 cut-off events. [2024-06-28 01:46:37,633 INFO L125 PetriNetUnfolderBase]: For 143686/143688 co-relation queries the response was YES. [2024-06-28 01:46:37,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58184 conditions, 10940 events. 6886/10940 cut-off events. For 143686/143688 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 71417 event pairs, 1854 based on Foata normal form. 2/10940 useless extension candidates. Maximal degree in co-relation 58111. Up to 9949 conditions per place. [2024-06-28 01:46:37,737 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 226 selfloop transitions, 22 changer transitions 0/255 dead transitions. [2024-06-28 01:46:37,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 255 transitions, 3522 flow [2024-06-28 01:46:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:46:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:46:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:46:37,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-28 01:46:37,739 INFO L175 Difference]: Start difference. First operand has 159 places, 217 transitions, 2788 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:46:37,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 255 transitions, 3522 flow [2024-06-28 01:46:38,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 255 transitions, 3460 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-06-28 01:46:38,064 INFO L231 Difference]: Finished difference. Result has 164 places, 225 transitions, 2881 flow [2024-06-28 01:46:38,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2881, PETRI_PLACES=164, PETRI_TRANSITIONS=225} [2024-06-28 01:46:38,065 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 113 predicate places. [2024-06-28 01:46:38,065 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 225 transitions, 2881 flow [2024-06-28 01:46:38,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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 01:46:38,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:38,065 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 01:46:38,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:46:38,065 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:38,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:38,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2000636074, now seen corresponding path program 2 times [2024-06-28 01:46:38,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:38,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109370946] [2024-06-28 01:46:38,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:38,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:39,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:39,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109370946] [2024-06-28 01:46:39,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109370946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:39,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:39,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:46:39,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289148941] [2024-06-28 01:46:39,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:39,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:46:39,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:39,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:46:39,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:46:40,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:46:40,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 225 transitions, 2881 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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 01:46:40,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:40,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:46:40,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:42,150 INFO L124 PetriNetUnfolderBase]: 6880/10933 cut-off events. [2024-06-28 01:46:42,150 INFO L125 PetriNetUnfolderBase]: For 149947/149955 co-relation queries the response was YES. [2024-06-28 01:46:42,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58998 conditions, 10933 events. 6880/10933 cut-off events. For 149947/149955 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 71394 event pairs, 1852 based on Foata normal form. 8/10939 useless extension candidates. Maximal degree in co-relation 58922. Up to 9944 conditions per place. [2024-06-28 01:46:42,269 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 220 selfloop transitions, 22 changer transitions 0/249 dead transitions. [2024-06-28 01:46:42,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 249 transitions, 3425 flow [2024-06-28 01:46:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:46:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:46:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:46:42,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-28 01:46:42,274 INFO L175 Difference]: Start difference. First operand has 164 places, 225 transitions, 2881 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:46:42,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 249 transitions, 3425 flow [2024-06-28 01:46:42,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 249 transitions, 3344 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-28 01:46:42,604 INFO L231 Difference]: Finished difference. Result has 168 places, 225 transitions, 2851 flow [2024-06-28 01:46:42,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2851, PETRI_PLACES=168, PETRI_TRANSITIONS=225} [2024-06-28 01:46:42,605 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 117 predicate places. [2024-06-28 01:46:42,605 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 225 transitions, 2851 flow [2024-06-28 01:46:42,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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 01:46:42,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:42,606 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 01:46:42,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:46:42,606 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:42,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:42,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1953277312, now seen corresponding path program 1 times [2024-06-28 01:46:42,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:42,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808934155] [2024-06-28 01:46:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:42,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:45,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:45,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:45,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808934155] [2024-06-28 01:46:45,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808934155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:45,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:45,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:46:45,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830797065] [2024-06-28 01:46:45,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:45,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:46:45,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:45,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:46:45,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:46:45,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:46:45,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 225 transitions, 2851 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:45,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:45,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:46:45,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:47,292 INFO L124 PetriNetUnfolderBase]: 6574/10475 cut-off events. [2024-06-28 01:46:47,293 INFO L125 PetriNetUnfolderBase]: For 154446/154565 co-relation queries the response was YES. [2024-06-28 01:46:47,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56829 conditions, 10475 events. 6574/10475 cut-off events. For 154446/154565 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 68992 event pairs, 1727 based on Foata normal form. 100/10508 useless extension candidates. Maximal degree in co-relation 56751. Up to 9381 conditions per place. [2024-06-28 01:46:47,385 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 219 selfloop transitions, 14 changer transitions 0/252 dead transitions. [2024-06-28 01:46:47,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 252 transitions, 3429 flow [2024-06-28 01:46:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:46:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:46:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 01:46:47,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:46:47,389 INFO L175 Difference]: Start difference. First operand has 168 places, 225 transitions, 2851 flow. Second operand 6 states and 141 transitions. [2024-06-28 01:46:47,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 252 transitions, 3429 flow [2024-06-28 01:46:47,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 252 transitions, 3370 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:47,699 INFO L231 Difference]: Finished difference. Result has 169 places, 228 transitions, 2884 flow [2024-06-28 01:46:47,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2792, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2884, PETRI_PLACES=169, PETRI_TRANSITIONS=228} [2024-06-28 01:46:47,700 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 118 predicate places. [2024-06-28 01:46:47,700 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 228 transitions, 2884 flow [2024-06-28 01:46:47,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:47,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:47,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:47,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:46:47,700 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:47,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash -835422109, now seen corresponding path program 1 times [2024-06-28 01:46:47,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:47,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865625176] [2024-06-28 01:46:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:47,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:50,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:50,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865625176] [2024-06-28 01:46:50,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865625176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:50,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:50,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:46:50,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265036324] [2024-06-28 01:46:50,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:50,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:46:50,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:50,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:46:50,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:46:50,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:46:50,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 228 transitions, 2884 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:50,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:50,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:46:50,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:52,903 INFO L124 PetriNetUnfolderBase]: 7175/11192 cut-off events. [2024-06-28 01:46:52,903 INFO L125 PetriNetUnfolderBase]: For 167363/167392 co-relation queries the response was YES. [2024-06-28 01:46:52,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61707 conditions, 11192 events. 7175/11192 cut-off events. For 167363/167392 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 72239 event pairs, 1306 based on Foata normal form. 32/11222 useless extension candidates. Maximal degree in co-relation 61628. Up to 9648 conditions per place. [2024-06-28 01:46:52,996 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 246 selfloop transitions, 59 changer transitions 0/312 dead transitions. [2024-06-28 01:46:52,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 312 transitions, 4048 flow [2024-06-28 01:46:52,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:52,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:52,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 01:46:52,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-06-28 01:46:52,998 INFO L175 Difference]: Start difference. First operand has 169 places, 228 transitions, 2884 flow. Second operand 9 states and 230 transitions. [2024-06-28 01:46:52,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 312 transitions, 4048 flow [2024-06-28 01:46:53,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 312 transitions, 3978 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 01:46:53,300 INFO L231 Difference]: Finished difference. Result has 176 places, 243 transitions, 3175 flow [2024-06-28 01:46:53,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3175, PETRI_PLACES=176, PETRI_TRANSITIONS=243} [2024-06-28 01:46:53,300 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 125 predicate places. [2024-06-28 01:46:53,301 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 243 transitions, 3175 flow [2024-06-28 01:46:53,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:53,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:53,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:53,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:46:53,301 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:53,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:53,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1425044275, now seen corresponding path program 1 times [2024-06-28 01:46:53,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:53,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63138541] [2024-06-28 01:46:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:53,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:56,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:56,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63138541] [2024-06-28 01:46:56,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63138541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:56,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:56,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:56,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621048538] [2024-06-28 01:46:56,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:56,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:56,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:56,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:56,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:56,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:46:56,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 243 transitions, 3175 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:56,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:56,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:46:56,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:59,926 INFO L124 PetriNetUnfolderBase]: 7427/11522 cut-off events. [2024-06-28 01:46:59,926 INFO L125 PetriNetUnfolderBase]: For 197752/197760 co-relation queries the response was YES. [2024-06-28 01:47:00,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66753 conditions, 11522 events. 7427/11522 cut-off events. For 197752/197760 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 73943 event pairs, 1338 based on Foata normal form. 16/11535 useless extension candidates. Maximal degree in co-relation 66671. Up to 8720 conditions per place. [2024-06-28 01:47:00,057 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 252 selfloop transitions, 114 changer transitions 0/373 dead transitions. [2024-06-28 01:47:00,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 373 transitions, 4564 flow [2024-06-28 01:47:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:47:00,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:47:00,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 315 transitions. [2024-06-28 01:47:00,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-06-28 01:47:00,059 INFO L175 Difference]: Start difference. First operand has 176 places, 243 transitions, 3175 flow. Second operand 12 states and 315 transitions. [2024-06-28 01:47:00,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 373 transitions, 4564 flow [2024-06-28 01:47:00,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 373 transitions, 4424 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 01:47:00,519 INFO L231 Difference]: Finished difference. Result has 187 places, 251 transitions, 3427 flow [2024-06-28 01:47:00,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3035, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3427, PETRI_PLACES=187, PETRI_TRANSITIONS=251} [2024-06-28 01:47:00,521 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 136 predicate places. [2024-06-28 01:47:00,521 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 251 transitions, 3427 flow [2024-06-28 01:47:00,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:00,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:00,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:00,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:47:00,521 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:00,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:00,522 INFO L85 PathProgramCache]: Analyzing trace with hash -392097071, now seen corresponding path program 2 times [2024-06-28 01:47:00,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:00,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440963757] [2024-06-28 01:47:00,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:00,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:03,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:03,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440963757] [2024-06-28 01:47:03,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440963757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:03,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:03,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:47:03,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921490545] [2024-06-28 01:47:03,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:03,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:47:03,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:47:03,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:47:03,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:47:03,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 251 transitions, 3427 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:03,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:03,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:47:03,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:05,385 INFO L124 PetriNetUnfolderBase]: 7419/11641 cut-off events. [2024-06-28 01:47:05,385 INFO L125 PetriNetUnfolderBase]: For 203090/203108 co-relation queries the response was YES. [2024-06-28 01:47:05,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68595 conditions, 11641 events. 7419/11641 cut-off events. For 203090/203108 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 76195 event pairs, 1419 based on Foata normal form. 20/11659 useless extension candidates. Maximal degree in co-relation 68508. Up to 10041 conditions per place. [2024-06-28 01:47:05,525 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 237 selfloop transitions, 51 changer transitions 0/295 dead transitions. [2024-06-28 01:47:05,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 295 transitions, 4217 flow [2024-06-28 01:47:05,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:47:05,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:47:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:47:05,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-28 01:47:05,536 INFO L175 Difference]: Start difference. First operand has 187 places, 251 transitions, 3427 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:47:05,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 295 transitions, 4217 flow [2024-06-28 01:47:06,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 295 transitions, 3950 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:06,158 INFO L231 Difference]: Finished difference. Result has 187 places, 251 transitions, 3272 flow [2024-06-28 01:47:06,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3160, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3272, PETRI_PLACES=187, PETRI_TRANSITIONS=251} [2024-06-28 01:47:06,168 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 136 predicate places. [2024-06-28 01:47:06,168 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 251 transitions, 3272 flow [2024-06-28 01:47:06,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:06,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:06,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:06,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:47:06,169 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:06,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:06,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1308863585, now seen corresponding path program 2 times [2024-06-28 01:47:06,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:06,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518920983] [2024-06-28 01:47:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:06,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:09,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:09,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518920983] [2024-06-28 01:47:09,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518920983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:09,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:09,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:09,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895721363] [2024-06-28 01:47:09,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:09,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:09,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:09,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:47:09,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 251 transitions, 3272 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:09,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:09,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:47:09,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:13,379 INFO L124 PetriNetUnfolderBase]: 7779/12154 cut-off events. [2024-06-28 01:47:13,379 INFO L125 PetriNetUnfolderBase]: For 211183/211194 co-relation queries the response was YES. [2024-06-28 01:47:13,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70528 conditions, 12154 events. 7779/12154 cut-off events. For 211183/211194 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 79420 event pairs, 1369 based on Foata normal form. 18/12167 useless extension candidates. Maximal degree in co-relation 70440. Up to 9532 conditions per place. [2024-06-28 01:47:13,483 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 259 selfloop transitions, 126 changer transitions 0/392 dead transitions. [2024-06-28 01:47:13,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 392 transitions, 4803 flow [2024-06-28 01:47:13,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:47:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:47:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 339 transitions. [2024-06-28 01:47:13,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5548281505728314 [2024-06-28 01:47:13,485 INFO L175 Difference]: Start difference. First operand has 187 places, 251 transitions, 3272 flow. Second operand 13 states and 339 transitions. [2024-06-28 01:47:13,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 392 transitions, 4803 flow [2024-06-28 01:47:13,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 392 transitions, 4701 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 01:47:13,922 INFO L231 Difference]: Finished difference. Result has 196 places, 260 transitions, 3591 flow [2024-06-28 01:47:13,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3170, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3591, PETRI_PLACES=196, PETRI_TRANSITIONS=260} [2024-06-28 01:47:13,923 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 145 predicate places. [2024-06-28 01:47:13,923 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 260 transitions, 3591 flow [2024-06-28 01:47:13,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:13,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:13,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:13,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:47:13,924 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:13,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:13,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1955159695, now seen corresponding path program 3 times [2024-06-28 01:47:13,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:13,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908760625] [2024-06-28 01:47:13,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:13,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:17,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:17,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908760625] [2024-06-28 01:47:17,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908760625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:17,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:17,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:17,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072598045] [2024-06-28 01:47:17,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:17,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:17,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:17,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:17,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:17,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:47:17,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 260 transitions, 3591 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:17,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:17,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:47:17,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:21,567 INFO L124 PetriNetUnfolderBase]: 8031/12606 cut-off events. [2024-06-28 01:47:21,567 INFO L125 PetriNetUnfolderBase]: For 232687/232698 co-relation queries the response was YES. [2024-06-28 01:47:21,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74882 conditions, 12606 events. 8031/12606 cut-off events. For 232687/232698 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 83174 event pairs, 1453 based on Foata normal form. 18/12619 useless extension candidates. Maximal degree in co-relation 74791. Up to 9928 conditions per place. [2024-06-28 01:47:21,708 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 259 selfloop transitions, 138 changer transitions 0/404 dead transitions. [2024-06-28 01:47:21,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 404 transitions, 5200 flow [2024-06-28 01:47:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:47:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:47:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 337 transitions. [2024-06-28 01:47:21,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5515548281505729 [2024-06-28 01:47:21,711 INFO L175 Difference]: Start difference. First operand has 196 places, 260 transitions, 3591 flow. Second operand 13 states and 337 transitions. [2024-06-28 01:47:21,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 404 transitions, 5200 flow [2024-06-28 01:47:22,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 404 transitions, 4921 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:22,363 INFO L231 Difference]: Finished difference. Result has 202 places, 271 transitions, 3819 flow [2024-06-28 01:47:22,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3328, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3819, PETRI_PLACES=202, PETRI_TRANSITIONS=271} [2024-06-28 01:47:22,364 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 151 predicate places. [2024-06-28 01:47:22,364 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 271 transitions, 3819 flow [2024-06-28 01:47:22,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:22,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:22,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:22,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:47:22,365 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:22,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:22,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1163918307, now seen corresponding path program 4 times [2024-06-28 01:47:22,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:22,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323232751] [2024-06-28 01:47:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:22,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:26,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:26,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323232751] [2024-06-28 01:47:26,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323232751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:26,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:26,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:26,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13041492] [2024-06-28 01:47:26,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:26,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:26,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:26,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:26,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:26,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:47:26,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 271 transitions, 3819 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:26,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:26,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:47:26,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:29,881 INFO L124 PetriNetUnfolderBase]: 8137/12734 cut-off events. [2024-06-28 01:47:29,881 INFO L125 PetriNetUnfolderBase]: For 233390/233397 co-relation queries the response was YES. [2024-06-28 01:47:29,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75883 conditions, 12734 events. 8137/12734 cut-off events. For 233390/233397 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 83862 event pairs, 1571 based on Foata normal form. 14/12743 useless extension candidates. Maximal degree in co-relation 75789. Up to 10094 conditions per place. [2024-06-28 01:47:30,017 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 250 selfloop transitions, 132 changer transitions 0/389 dead transitions. [2024-06-28 01:47:30,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 389 transitions, 5152 flow [2024-06-28 01:47:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:47:30,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:47:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 312 transitions. [2024-06-28 01:47:30,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:47:30,019 INFO L175 Difference]: Start difference. First operand has 202 places, 271 transitions, 3819 flow. Second operand 12 states and 312 transitions. [2024-06-28 01:47:30,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 389 transitions, 5152 flow [2024-06-28 01:47:30,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 389 transitions, 4908 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:30,603 INFO L231 Difference]: Finished difference. Result has 208 places, 272 transitions, 3875 flow [2024-06-28 01:47:30,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3577, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3875, PETRI_PLACES=208, PETRI_TRANSITIONS=272} [2024-06-28 01:47:30,604 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 157 predicate places. [2024-06-28 01:47:30,604 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 272 transitions, 3875 flow [2024-06-28 01:47:30,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:30,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:30,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:30,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:47:30,605 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:30,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:30,605 INFO L85 PathProgramCache]: Analyzing trace with hash 790391779, now seen corresponding path program 5 times [2024-06-28 01:47:30,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:30,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463940875] [2024-06-28 01:47:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:30,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:33,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:33,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463940875] [2024-06-28 01:47:33,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463940875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:33,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:33,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:33,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206618364] [2024-06-28 01:47:33,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:33,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:33,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:33,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:33,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:47:33,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 272 transitions, 3875 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:33,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:33,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:47:33,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:37,598 INFO L124 PetriNetUnfolderBase]: 8117/12728 cut-off events. [2024-06-28 01:47:37,598 INFO L125 PetriNetUnfolderBase]: For 224726/224737 co-relation queries the response was YES. [2024-06-28 01:47:37,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74811 conditions, 12728 events. 8117/12728 cut-off events. For 224726/224737 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 83830 event pairs, 1303 based on Foata normal form. 18/12741 useless extension candidates. Maximal degree in co-relation 74715. Up to 8046 conditions per place. [2024-06-28 01:47:37,711 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 234 selfloop transitions, 151 changer transitions 0/392 dead transitions. [2024-06-28 01:47:37,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 392 transitions, 5135 flow [2024-06-28 01:47:37,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:47:37,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:47:37,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 312 transitions. [2024-06-28 01:47:37,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:47:37,713 INFO L175 Difference]: Start difference. First operand has 208 places, 272 transitions, 3875 flow. Second operand 12 states and 312 transitions. [2024-06-28 01:47:37,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 392 transitions, 5135 flow [2024-06-28 01:47:38,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 392 transitions, 4676 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-28 01:47:38,268 INFO L231 Difference]: Finished difference. Result has 207 places, 271 transitions, 3652 flow [2024-06-28 01:47:38,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3346, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3652, PETRI_PLACES=207, PETRI_TRANSITIONS=271} [2024-06-28 01:47:38,270 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 156 predicate places. [2024-06-28 01:47:38,270 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 271 transitions, 3652 flow [2024-06-28 01:47:38,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:38,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:38,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:38,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:47:38,274 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:38,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:38,274 INFO L85 PathProgramCache]: Analyzing trace with hash 616381361, now seen corresponding path program 3 times [2024-06-28 01:47:38,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:38,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918759861] [2024-06-28 01:47:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:38,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:40,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:40,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918759861] [2024-06-28 01:47:40,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918759861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:40,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:40,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:47:40,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625551267] [2024-06-28 01:47:40,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:40,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:47:40,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:40,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:47:40,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:47:40,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:47:40,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 271 transitions, 3652 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:40,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:40,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:47:40,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:43,720 INFO L124 PetriNetUnfolderBase]: 8191/12899 cut-off events. [2024-06-28 01:47:43,720 INFO L125 PetriNetUnfolderBase]: For 214991/215022 co-relation queries the response was YES. [2024-06-28 01:47:43,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73615 conditions, 12899 events. 8191/12899 cut-off events. For 214991/215022 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 85789 event pairs, 1598 based on Foata normal form. 24/12918 useless extension candidates. Maximal degree in co-relation 73520. Up to 10842 conditions per place. [2024-06-28 01:47:43,849 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 257 selfloop transitions, 62 changer transitions 0/326 dead transitions. [2024-06-28 01:47:43,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 326 transitions, 4838 flow [2024-06-28 01:47:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:47:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:47:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:47:43,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-28 01:47:43,851 INFO L175 Difference]: Start difference. First operand has 207 places, 271 transitions, 3652 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:47:43,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 326 transitions, 4838 flow [2024-06-28 01:47:44,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 326 transitions, 4431 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 01:47:44,433 INFO L231 Difference]: Finished difference. Result has 205 places, 283 transitions, 3602 flow [2024-06-28 01:47:44,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3602, PETRI_PLACES=205, PETRI_TRANSITIONS=283} [2024-06-28 01:47:44,434 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 154 predicate places. [2024-06-28 01:47:44,435 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 283 transitions, 3602 flow [2024-06-28 01:47:44,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:44,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:44,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:44,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:47:44,435 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:44,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:44,436 INFO L85 PathProgramCache]: Analyzing trace with hash 842947513, now seen corresponding path program 1 times [2024-06-28 01:47:44,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:44,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856379279] [2024-06-28 01:47:44,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:44,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:46,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:46,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:46,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856379279] [2024-06-28 01:47:46,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856379279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:46,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:46,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:47:46,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066809412] [2024-06-28 01:47:46,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:46,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:47:46,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:46,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:47:46,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:47:46,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:47:46,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 283 transitions, 3602 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:46,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:46,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:47:46,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:50,154 INFO L124 PetriNetUnfolderBase]: 8437/13459 cut-off events. [2024-06-28 01:47:50,154 INFO L125 PetriNetUnfolderBase]: For 229413/229421 co-relation queries the response was YES. [2024-06-28 01:47:50,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75120 conditions, 13459 events. 8437/13459 cut-off events. For 229413/229421 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 90970 event pairs, 2162 based on Foata normal form. 8/13465 useless extension candidates. Maximal degree in co-relation 75023. Up to 12024 conditions per place. [2024-06-28 01:47:50,292 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 302 selfloop transitions, 58 changer transitions 0/367 dead transitions. [2024-06-28 01:47:50,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 367 transitions, 5198 flow [2024-06-28 01:47:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:47:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:47:50,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 01:47:50,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491725768321513 [2024-06-28 01:47:50,294 INFO L175 Difference]: Start difference. First operand has 205 places, 283 transitions, 3602 flow. Second operand 9 states and 208 transitions. [2024-06-28 01:47:50,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 367 transitions, 5198 flow [2024-06-28 01:47:50,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 367 transitions, 5085 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 01:47:50,862 INFO L231 Difference]: Finished difference. Result has 214 places, 319 transitions, 4148 flow [2024-06-28 01:47:50,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3499, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4148, PETRI_PLACES=214, PETRI_TRANSITIONS=319} [2024-06-28 01:47:50,863 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 163 predicate places. [2024-06-28 01:47:50,863 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 319 transitions, 4148 flow [2024-06-28 01:47:50,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:50,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:50,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:50,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:47:50,863 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:50,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:50,864 INFO L85 PathProgramCache]: Analyzing trace with hash -783733773, now seen corresponding path program 2 times [2024-06-28 01:47:50,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:50,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383551204] [2024-06-28 01:47:50,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:50,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:53,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:53,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383551204] [2024-06-28 01:47:53,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383551204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:53,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:53,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:47:53,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324180787] [2024-06-28 01:47:53,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:53,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:47:53,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:53,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:47:53,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:47:53,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:47:53,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 319 transitions, 4148 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:53,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:53,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:47:53,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:56,386 INFO L124 PetriNetUnfolderBase]: 8491/13531 cut-off events. [2024-06-28 01:47:56,386 INFO L125 PetriNetUnfolderBase]: For 238925/238935 co-relation queries the response was YES. [2024-06-28 01:47:56,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77115 conditions, 13531 events. 8491/13531 cut-off events. For 238925/238935 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 91327 event pairs, 2167 based on Foata normal form. 12/13541 useless extension candidates. Maximal degree in co-relation 77014. Up to 12073 conditions per place. [2024-06-28 01:47:56,556 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 294 selfloop transitions, 67 changer transitions 0/368 dead transitions. [2024-06-28 01:47:56,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 368 transitions, 5252 flow [2024-06-28 01:47:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:47:56,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:47:56,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:47:56,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167173252279635 [2024-06-28 01:47:56,558 INFO L175 Difference]: Start difference. First operand has 214 places, 319 transitions, 4148 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:47:56,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 368 transitions, 5252 flow [2024-06-28 01:47:57,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 368 transitions, 5041 flow, removed 103 selfloop flow, removed 2 redundant places. [2024-06-28 01:47:57,251 INFO L231 Difference]: Finished difference. Result has 219 places, 327 transitions, 4257 flow [2024-06-28 01:47:57,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3995, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4257, PETRI_PLACES=219, PETRI_TRANSITIONS=327} [2024-06-28 01:47:57,252 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 168 predicate places. [2024-06-28 01:47:57,252 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 327 transitions, 4257 flow [2024-06-28 01:47:57,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:57,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:57,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:57,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:47:57,253 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:57,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:57,253 INFO L85 PathProgramCache]: Analyzing trace with hash -783584043, now seen corresponding path program 3 times [2024-06-28 01:47:57,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:57,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848125216] [2024-06-28 01:47:57,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:57,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:59,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:59,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848125216] [2024-06-28 01:47:59,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848125216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:59,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:59,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:47:59,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586264777] [2024-06-28 01:47:59,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:59,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:47:59,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:59,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:47:59,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:47:59,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:47:59,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 327 transitions, 4257 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:59,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:59,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:47:59,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:02,940 INFO L124 PetriNetUnfolderBase]: 8569/13636 cut-off events. [2024-06-28 01:48:02,941 INFO L125 PetriNetUnfolderBase]: For 241371/241373 co-relation queries the response was YES. [2024-06-28 01:48:03,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77710 conditions, 13636 events. 8569/13636 cut-off events. For 241371/241373 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 91971 event pairs, 2169 based on Foata normal form. 4/13638 useless extension candidates. Maximal degree in co-relation 77607. Up to 12144 conditions per place. [2024-06-28 01:48:03,132 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 293 selfloop transitions, 76 changer transitions 0/376 dead transitions. [2024-06-28 01:48:03,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 376 transitions, 5385 flow [2024-06-28 01:48:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:48:03,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-28 01:48:03,134 INFO L175 Difference]: Start difference. First operand has 219 places, 327 transitions, 4257 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:48:03,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 376 transitions, 5385 flow [2024-06-28 01:48:04,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 376 transitions, 5093 flow, removed 92 selfloop flow, removed 5 redundant places. [2024-06-28 01:48:04,167 INFO L231 Difference]: Finished difference. Result has 221 places, 339 transitions, 4325 flow [2024-06-28 01:48:04,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4033, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4325, PETRI_PLACES=221, PETRI_TRANSITIONS=339} [2024-06-28 01:48:04,167 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 170 predicate places. [2024-06-28 01:48:04,167 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 339 transitions, 4325 flow [2024-06-28 01:48:04,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:04,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:04,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:04,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:48:04,168 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:04,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:04,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1890177563, now seen corresponding path program 4 times [2024-06-28 01:48:04,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:04,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088863385] [2024-06-28 01:48:04,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:04,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:06,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:06,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088863385] [2024-06-28 01:48:06,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088863385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:06,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:06,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:48:06,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618432847] [2024-06-28 01:48:06,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:06,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:48:06,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:06,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:48:06,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:48:06,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:48:06,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 339 transitions, 4325 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:06,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:06,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:48:06,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:09,699 INFO L124 PetriNetUnfolderBase]: 8563/13637 cut-off events. [2024-06-28 01:48:09,699 INFO L125 PetriNetUnfolderBase]: For 236431/236443 co-relation queries the response was YES. [2024-06-28 01:48:09,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77099 conditions, 13637 events. 8563/13637 cut-off events. For 236431/236443 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 92081 event pairs, 2169 based on Foata normal form. 7/13642 useless extension candidates. Maximal degree in co-relation 76996. Up to 12139 conditions per place. [2024-06-28 01:48:09,861 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 287 selfloop transitions, 76 changer transitions 0/370 dead transitions. [2024-06-28 01:48:09,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 370 transitions, 5141 flow [2024-06-28 01:48:09,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:09,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:09,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 01:48:09,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-28 01:48:09,862 INFO L175 Difference]: Start difference. First operand has 221 places, 339 transitions, 4325 flow. Second operand 7 states and 161 transitions. [2024-06-28 01:48:09,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 370 transitions, 5141 flow [2024-06-28 01:48:10,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 370 transitions, 4959 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 01:48:10,679 INFO L231 Difference]: Finished difference. Result has 224 places, 339 transitions, 4311 flow [2024-06-28 01:48:10,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4143, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4311, PETRI_PLACES=224, PETRI_TRANSITIONS=339} [2024-06-28 01:48:10,680 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 173 predicate places. [2024-06-28 01:48:10,680 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 339 transitions, 4311 flow [2024-06-28 01:48:10,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:10,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:10,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:10,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:48:10,681 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:10,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash -360839097, now seen corresponding path program 1 times [2024-06-28 01:48:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:10,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982949989] [2024-06-28 01:48:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:10,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:13,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:13,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982949989] [2024-06-28 01:48:13,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982949989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:13,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:13,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:48:13,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320107321] [2024-06-28 01:48:13,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:13,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:48:13,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:13,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:48:13,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:48:13,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:48:13,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 339 transitions, 4311 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:13,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:13,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:48:13,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:16,363 INFO L124 PetriNetUnfolderBase]: 8707/13566 cut-off events. [2024-06-28 01:48:16,364 INFO L125 PetriNetUnfolderBase]: For 245500/245518 co-relation queries the response was YES. [2024-06-28 01:48:16,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78218 conditions, 13566 events. 8707/13566 cut-off events. For 245500/245518 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 89258 event pairs, 1639 based on Foata normal form. 20/13584 useless extension candidates. Maximal degree in co-relation 78114. Up to 11802 conditions per place. [2024-06-28 01:48:16,518 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 339 selfloop transitions, 69 changer transitions 0/415 dead transitions. [2024-06-28 01:48:16,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 415 transitions, 5711 flow [2024-06-28 01:48:16,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:48:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:48:16,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 01:48:16,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:48:16,522 INFO L175 Difference]: Start difference. First operand has 224 places, 339 transitions, 4311 flow. Second operand 9 states and 225 transitions. [2024-06-28 01:48:16,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 415 transitions, 5711 flow [2024-06-28 01:48:17,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 415 transitions, 5472 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:48:17,145 INFO L231 Difference]: Finished difference. Result has 226 places, 348 transitions, 4366 flow [2024-06-28 01:48:17,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4366, PETRI_PLACES=226, PETRI_TRANSITIONS=348} [2024-06-28 01:48:17,149 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 175 predicate places. [2024-06-28 01:48:17,149 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 348 transitions, 4366 flow [2024-06-28 01:48:17,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:17,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:17,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:17,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:48:17,150 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:17,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:17,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1745881791, now seen corresponding path program 2 times [2024-06-28 01:48:17,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:17,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687616695] [2024-06-28 01:48:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:17,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:19,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687616695] [2024-06-28 01:48:19,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687616695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:19,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:19,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:48:19,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470950105] [2024-06-28 01:48:19,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:19,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:48:19,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:19,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:48:19,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:48:19,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:48:19,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 348 transitions, 4366 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:19,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:19,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:48:19,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:22,694 INFO L124 PetriNetUnfolderBase]: 8695/13584 cut-off events. [2024-06-28 01:48:22,695 INFO L125 PetriNetUnfolderBase]: For 247262/247288 co-relation queries the response was YES. [2024-06-28 01:48:22,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78431 conditions, 13584 events. 8695/13584 cut-off events. For 247262/247288 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 89771 event pairs, 1647 based on Foata normal form. 28/13610 useless extension candidates. Maximal degree in co-relation 78326. Up to 11794 conditions per place. [2024-06-28 01:48:22,885 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 326 selfloop transitions, 61 changer transitions 0/394 dead transitions. [2024-06-28 01:48:22,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 394 transitions, 5400 flow [2024-06-28 01:48:22,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:48:22,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:48:22,887 INFO L175 Difference]: Start difference. First operand has 226 places, 348 transitions, 4366 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:48:22,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 394 transitions, 5400 flow [2024-06-28 01:48:23,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 394 transitions, 5226 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 01:48:23,949 INFO L231 Difference]: Finished difference. Result has 228 places, 348 transitions, 4325 flow [2024-06-28 01:48:23,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4192, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4325, PETRI_PLACES=228, PETRI_TRANSITIONS=348} [2024-06-28 01:48:23,950 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 177 predicate places. [2024-06-28 01:48:23,950 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 348 transitions, 4325 flow [2024-06-28 01:48:23,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:23,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:23,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:23,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:48:23,951 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:23,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:23,951 INFO L85 PathProgramCache]: Analyzing trace with hash 729906841, now seen corresponding path program 1 times [2024-06-28 01:48:23,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:23,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043050368] [2024-06-28 01:48:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:23,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:27,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:27,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043050368] [2024-06-28 01:48:27,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043050368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:27,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:27,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:48:27,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169019985] [2024-06-28 01:48:27,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:27,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:48:27,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:27,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:48:27,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:48:27,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:48:27,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 348 transitions, 4325 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:27,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:27,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:48:27,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:29,998 INFO L124 PetriNetUnfolderBase]: 8347/13123 cut-off events. [2024-06-28 01:48:29,998 INFO L125 PetriNetUnfolderBase]: For 253693/253876 co-relation queries the response was YES. [2024-06-28 01:48:30,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75754 conditions, 13123 events. 8347/13123 cut-off events. For 253693/253876 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 87894 event pairs, 1686 based on Foata normal form. 159/13178 useless extension candidates. Maximal degree in co-relation 75648. Up to 11743 conditions per place. [2024-06-28 01:48:30,188 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 338 selfloop transitions, 27 changer transitions 0/395 dead transitions. [2024-06-28 01:48:30,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 395 transitions, 5283 flow [2024-06-28 01:48:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:30,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:48:30,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 01:48:30,189 INFO L175 Difference]: Start difference. First operand has 228 places, 348 transitions, 4325 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:48:30,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 395 transitions, 5283 flow [2024-06-28 01:48:31,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 395 transitions, 5161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 01:48:31,043 INFO L231 Difference]: Finished difference. Result has 229 places, 351 transitions, 4342 flow [2024-06-28 01:48:31,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4203, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4342, PETRI_PLACES=229, PETRI_TRANSITIONS=351} [2024-06-28 01:48:31,044 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 178 predicate places. [2024-06-28 01:48:31,044 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 351 transitions, 4342 flow [2024-06-28 01:48:31,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:31,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:31,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:31,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:48:31,045 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:31,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:31,045 INFO L85 PathProgramCache]: Analyzing trace with hash 835270727, now seen corresponding path program 3 times [2024-06-28 01:48:31,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:31,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469723265] [2024-06-28 01:48:31,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:31,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:33,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:33,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469723265] [2024-06-28 01:48:33,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469723265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:33,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:33,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:48:33,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481379774] [2024-06-28 01:48:33,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:33,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:48:33,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:33,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:48:33,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:48:33,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:48:33,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 351 transitions, 4342 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:33,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:33,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:48:33,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:36,302 INFO L124 PetriNetUnfolderBase]: 8723/13641 cut-off events. [2024-06-28 01:48:36,303 INFO L125 PetriNetUnfolderBase]: For 258003/258020 co-relation queries the response was YES. [2024-06-28 01:48:36,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78747 conditions, 13641 events. 8723/13641 cut-off events. For 258003/258020 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 90168 event pairs, 1699 based on Foata normal form. 14/13650 useless extension candidates. Maximal degree in co-relation 78640. Up to 12288 conditions per place. [2024-06-28 01:48:36,462 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 349 selfloop transitions, 45 changer transitions 0/401 dead transitions. [2024-06-28 01:48:36,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 401 transitions, 5372 flow [2024-06-28 01:48:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:48:36,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-28 01:48:36,463 INFO L175 Difference]: Start difference. First operand has 229 places, 351 transitions, 4342 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:48:36,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 401 transitions, 5372 flow [2024-06-28 01:48:37,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 401 transitions, 5227 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-28 01:48:37,211 INFO L231 Difference]: Finished difference. Result has 231 places, 351 transitions, 4295 flow [2024-06-28 01:48:37,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4197, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4295, PETRI_PLACES=231, PETRI_TRANSITIONS=351} [2024-06-28 01:48:37,211 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 180 predicate places. [2024-06-28 01:48:37,212 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 351 transitions, 4295 flow [2024-06-28 01:48:37,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:37,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:37,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:37,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:48:37,212 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:37,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:37,213 INFO L85 PathProgramCache]: Analyzing trace with hash 847650887, now seen corresponding path program 4 times [2024-06-28 01:48:37,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:37,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736537844] [2024-06-28 01:48:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:37,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:39,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:39,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736537844] [2024-06-28 01:48:39,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736537844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:39,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:39,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:48:39,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602258088] [2024-06-28 01:48:39,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:39,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:48:39,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:39,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:48:39,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:48:39,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:48:39,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 351 transitions, 4295 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:39,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:39,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:48:39,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:42,941 INFO L124 PetriNetUnfolderBase]: 8809/13726 cut-off events. [2024-06-28 01:48:42,941 INFO L125 PetriNetUnfolderBase]: For 263399/263418 co-relation queries the response was YES. [2024-06-28 01:48:43,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79491 conditions, 13726 events. 8809/13726 cut-off events. For 263399/263418 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 90252 event pairs, 1660 based on Foata normal form. 16/13737 useless extension candidates. Maximal degree in co-relation 79383. Up to 11453 conditions per place. [2024-06-28 01:48:43,090 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 314 selfloop transitions, 94 changer transitions 0/415 dead transitions. [2024-06-28 01:48:43,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 415 transitions, 5689 flow [2024-06-28 01:48:43,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:43,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:48:43,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-28 01:48:43,092 INFO L175 Difference]: Start difference. First operand has 231 places, 351 transitions, 4295 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:48:43,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 415 transitions, 5689 flow [2024-06-28 01:48:43,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 415 transitions, 5529 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 01:48:43,953 INFO L231 Difference]: Finished difference. Result has 234 places, 364 transitions, 4674 flow [2024-06-28 01:48:43,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4139, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4674, PETRI_PLACES=234, PETRI_TRANSITIONS=364} [2024-06-28 01:48:43,954 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 183 predicate places. [2024-06-28 01:48:43,954 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 364 transitions, 4674 flow [2024-06-28 01:48:43,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:43,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:43,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:43,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:48:43,955 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:43,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:43,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1539758103, now seen corresponding path program 5 times [2024-06-28 01:48:43,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:43,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439590094] [2024-06-28 01:48:43,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:43,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:46,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:46,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439590094] [2024-06-28 01:48:46,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439590094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:46,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:46,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:48:46,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795545598] [2024-06-28 01:48:46,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:46,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:48:46,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:46,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:48:46,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:48:46,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:48:46,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 364 transitions, 4674 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:46,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:46,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:48:46,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:49,965 INFO L124 PetriNetUnfolderBase]: 8849/13807 cut-off events. [2024-06-28 01:48:49,966 INFO L125 PetriNetUnfolderBase]: For 280869/280908 co-relation queries the response was YES. [2024-06-28 01:48:50,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82212 conditions, 13807 events. 8849/13807 cut-off events. For 280869/280908 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 90992 event pairs, 1633 based on Foata normal form. 32/13834 useless extension candidates. Maximal degree in co-relation 82100. Up to 11472 conditions per place. [2024-06-28 01:48:50,346 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 319 selfloop transitions, 85 changer transitions 0/411 dead transitions. [2024-06-28 01:48:50,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 411 transitions, 5884 flow [2024-06-28 01:48:50,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:48:50,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-06-28 01:48:50,348 INFO L175 Difference]: Start difference. First operand has 234 places, 364 transitions, 4674 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:48:50,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 411 transitions, 5884 flow [2024-06-28 01:48:51,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 411 transitions, 5747 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-28 01:48:51,496 INFO L231 Difference]: Finished difference. Result has 239 places, 367 transitions, 4775 flow [2024-06-28 01:48:51,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4543, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4775, PETRI_PLACES=239, PETRI_TRANSITIONS=367} [2024-06-28 01:48:51,497 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 188 predicate places. [2024-06-28 01:48:51,497 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 367 transitions, 4775 flow [2024-06-28 01:48:51,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:51,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:51,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:51,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:48:51,498 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:51,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1606878327, now seen corresponding path program 6 times [2024-06-28 01:48:51,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:51,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427984498] [2024-06-28 01:48:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:51,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:53,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:53,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427984498] [2024-06-28 01:48:53,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427984498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:53,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:53,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:48:53,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198450891] [2024-06-28 01:48:53,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:53,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:48:53,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:53,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:48:53,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:48:53,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:48:53,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 367 transitions, 4775 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:53,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:53,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:48:53,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:57,327 INFO L124 PetriNetUnfolderBase]: 8839/13791 cut-off events. [2024-06-28 01:48:57,327 INFO L125 PetriNetUnfolderBase]: For 284390/284429 co-relation queries the response was YES. [2024-06-28 01:48:57,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82141 conditions, 13791 events. 8839/13791 cut-off events. For 284390/284429 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 90866 event pairs, 1633 based on Foata normal form. 30/13816 useless extension candidates. Maximal degree in co-relation 82027. Up to 11464 conditions per place. [2024-06-28 01:48:57,522 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 315 selfloop transitions, 90 changer transitions 0/412 dead transitions. [2024-06-28 01:48:57,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 412 transitions, 5857 flow [2024-06-28 01:48:57,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:48:57,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-28 01:48:57,524 INFO L175 Difference]: Start difference. First operand has 239 places, 367 transitions, 4775 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:48:57,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 412 transitions, 5857 flow [2024-06-28 01:48:58,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 412 transitions, 5664 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 01:48:58,589 INFO L231 Difference]: Finished difference. Result has 242 places, 367 transitions, 4770 flow [2024-06-28 01:48:58,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4582, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4770, PETRI_PLACES=242, PETRI_TRANSITIONS=367} [2024-06-28 01:48:58,590 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 191 predicate places. [2024-06-28 01:48:58,590 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 367 transitions, 4770 flow [2024-06-28 01:48:58,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:58,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:58,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:58,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:48:58,594 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:58,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:58,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1341328437, now seen corresponding path program 2 times [2024-06-28 01:48:58,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:58,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498218931] [2024-06-28 01:48:58,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:58,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:02,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:02,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498218931] [2024-06-28 01:49:02,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498218931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:02,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:02,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:49:02,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160680456] [2024-06-28 01:49:02,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:02,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:49:02,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:02,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:49:02,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:49:02,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:49:02,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 367 transitions, 4770 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:02,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:02,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:49:02,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:05,764 INFO L124 PetriNetUnfolderBase]: 8487/13361 cut-off events. [2024-06-28 01:49:05,764 INFO L125 PetriNetUnfolderBase]: For 291753/291949 co-relation queries the response was YES. [2024-06-28 01:49:05,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79609 conditions, 13361 events. 8487/13361 cut-off events. For 291753/291949 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 89587 event pairs, 1645 based on Foata normal form. 167/13426 useless extension candidates. Maximal degree in co-relation 79494. Up to 11829 conditions per place. [2024-06-28 01:49:05,938 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 343 selfloop transitions, 35 changer transitions 0/412 dead transitions. [2024-06-28 01:49:05,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 412 transitions, 5853 flow [2024-06-28 01:49:05,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:49:05,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:49:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:49:05,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:49:05,940 INFO L175 Difference]: Start difference. First operand has 242 places, 367 transitions, 4770 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:49:05,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 412 transitions, 5853 flow [2024-06-28 01:49:06,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 412 transitions, 5657 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:49:06,703 INFO L231 Difference]: Finished difference. Result has 244 places, 372 transitions, 4811 flow [2024-06-28 01:49:06,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4578, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4811, PETRI_PLACES=244, PETRI_TRANSITIONS=372} [2024-06-28 01:49:06,704 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 193 predicate places. [2024-06-28 01:49:06,704 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 372 transitions, 4811 flow [2024-06-28 01:49:06,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:06,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:06,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:06,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:49:06,704 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:06,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:06,705 INFO L85 PathProgramCache]: Analyzing trace with hash 198825791, now seen corresponding path program 3 times [2024-06-28 01:49:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:06,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383889508] [2024-06-28 01:49:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:06,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:09,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:09,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383889508] [2024-06-28 01:49:09,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383889508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:09,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:09,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:49:09,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851223351] [2024-06-28 01:49:09,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:09,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:49:09,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:09,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:49:09,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:49:09,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:49:09,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 372 transitions, 4811 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:09,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:09,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:49:09,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:13,001 INFO L124 PetriNetUnfolderBase]: 8490/13370 cut-off events. [2024-06-28 01:49:13,001 INFO L125 PetriNetUnfolderBase]: For 297534/297730 co-relation queries the response was YES. [2024-06-28 01:49:13,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79363 conditions, 13370 events. 8490/13370 cut-off events. For 297534/297730 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 89676 event pairs, 1646 based on Foata normal form. 167/13435 useless extension candidates. Maximal degree in co-relation 79246. Up to 11720 conditions per place. [2024-06-28 01:49:13,164 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 342 selfloop transitions, 42 changer transitions 0/418 dead transitions. [2024-06-28 01:49:13,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 418 transitions, 5945 flow [2024-06-28 01:49:13,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:49:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:49:13,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:49:13,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:49:13,166 INFO L175 Difference]: Start difference. First operand has 244 places, 372 transitions, 4811 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:49:13,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 418 transitions, 5945 flow [2024-06-28 01:49:14,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 418 transitions, 5857 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-28 01:49:14,058 INFO L231 Difference]: Finished difference. Result has 249 places, 377 transitions, 4978 flow [2024-06-28 01:49:14,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4723, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4978, PETRI_PLACES=249, PETRI_TRANSITIONS=377} [2024-06-28 01:49:14,059 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 198 predicate places. [2024-06-28 01:49:14,059 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 377 transitions, 4978 flow [2024-06-28 01:49:14,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:14,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:14,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:14,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:49:14,059 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:14,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:14,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1473938287, now seen corresponding path program 1 times [2024-06-28 01:49:14,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:14,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061955922] [2024-06-28 01:49:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:14,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:16,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:16,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061955922] [2024-06-28 01:49:16,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061955922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:16,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:16,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:49:16,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330921939] [2024-06-28 01:49:16,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:16,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:49:16,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:16,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:49:16,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:49:16,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:49:16,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 377 transitions, 4978 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:16,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:16,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:49:16,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:19,991 INFO L124 PetriNetUnfolderBase]: 8916/14174 cut-off events. [2024-06-28 01:49:19,991 INFO L125 PetriNetUnfolderBase]: For 307195/307205 co-relation queries the response was YES. [2024-06-28 01:49:20,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83657 conditions, 14174 events. 8916/14174 cut-off events. For 307195/307205 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 96099 event pairs, 2303 based on Foata normal form. 10/14182 useless extension candidates. Maximal degree in co-relation 83537. Up to 12857 conditions per place. [2024-06-28 01:49:20,201 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 387 selfloop transitions, 33 changer transitions 0/427 dead transitions. [2024-06-28 01:49:20,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 427 transitions, 6036 flow [2024-06-28 01:49:20,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:49:20,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:49:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:49:20,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-28 01:49:20,203 INFO L175 Difference]: Start difference. First operand has 249 places, 377 transitions, 4978 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:49:20,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 427 transitions, 6036 flow [2024-06-28 01:49:21,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 427 transitions, 5913 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 01:49:21,279 INFO L231 Difference]: Finished difference. Result has 254 places, 381 transitions, 5012 flow [2024-06-28 01:49:21,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4855, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5012, PETRI_PLACES=254, PETRI_TRANSITIONS=381} [2024-06-28 01:49:21,279 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 203 predicate places. [2024-06-28 01:49:21,280 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 381 transitions, 5012 flow [2024-06-28 01:49:21,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:21,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:21,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:21,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:49:21,280 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:21,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash 843017193, now seen corresponding path program 2 times [2024-06-28 01:49:21,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:21,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273009617] [2024-06-28 01:49:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:21,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:23,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:23,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273009617] [2024-06-28 01:49:23,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273009617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:23,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:23,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:49:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128695560] [2024-06-28 01:49:23,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:23,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:49:23,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:23,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:49:23,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:49:23,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:49:23,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 381 transitions, 5012 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:23,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:23,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:49:23,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:27,487 INFO L124 PetriNetUnfolderBase]: 8952/14219 cut-off events. [2024-06-28 01:49:27,488 INFO L125 PetriNetUnfolderBase]: For 313419/313429 co-relation queries the response was YES. [2024-06-28 01:49:27,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84923 conditions, 14219 events. 8952/14219 cut-off events. For 313419/313429 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 96182 event pairs, 2198 based on Foata normal form. 10/14227 useless extension candidates. Maximal degree in co-relation 84801. Up to 12482 conditions per place. [2024-06-28 01:49:27,664 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 344 selfloop transitions, 86 changer transitions 0/437 dead transitions. [2024-06-28 01:49:27,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 437 transitions, 6298 flow [2024-06-28 01:49:27,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:49:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:49:27,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:49:27,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-28 01:49:27,666 INFO L175 Difference]: Start difference. First operand has 254 places, 381 transitions, 5012 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:49:27,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 437 transitions, 6298 flow [2024-06-28 01:49:28,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 437 transitions, 6169 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:49:28,909 INFO L231 Difference]: Finished difference. Result has 256 places, 389 transitions, 5240 flow [2024-06-28 01:49:28,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4883, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5240, PETRI_PLACES=256, PETRI_TRANSITIONS=389} [2024-06-28 01:49:28,910 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 205 predicate places. [2024-06-28 01:49:28,910 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 389 transitions, 5240 flow [2024-06-28 01:49:28,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:28,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:28,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:28,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:49:28,911 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:28,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:28,911 INFO L85 PathProgramCache]: Analyzing trace with hash 847665767, now seen corresponding path program 1 times [2024-06-28 01:49:28,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:28,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426055375] [2024-06-28 01:49:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:28,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:31,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:31,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426055375] [2024-06-28 01:49:31,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426055375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:31,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:31,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:49:31,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429682513] [2024-06-28 01:49:31,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:31,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:49:31,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:49:31,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:49:31,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:49:31,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 389 transitions, 5240 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:31,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:31,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:49:31,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:35,600 INFO L124 PetriNetUnfolderBase]: 8982/14270 cut-off events. [2024-06-28 01:49:35,600 INFO L125 PetriNetUnfolderBase]: For 329585/329587 co-relation queries the response was YES. [2024-06-28 01:49:35,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86709 conditions, 14270 events. 8982/14270 cut-off events. For 329585/329587 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 96606 event pairs, 2229 based on Foata normal form. 2/14270 useless extension candidates. Maximal degree in co-relation 86586. Up to 12913 conditions per place. [2024-06-28 01:49:35,770 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 386 selfloop transitions, 36 changer transitions 0/429 dead transitions. [2024-06-28 01:49:35,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 429 transitions, 6272 flow [2024-06-28 01:49:35,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:49:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:49:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:49:35,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-28 01:49:35,772 INFO L175 Difference]: Start difference. First operand has 256 places, 389 transitions, 5240 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:49:35,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 429 transitions, 6272 flow [2024-06-28 01:49:36,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 429 transitions, 6118 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 01:49:36,968 INFO L231 Difference]: Finished difference. Result has 259 places, 392 transitions, 5247 flow [2024-06-28 01:49:36,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5086, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5247, PETRI_PLACES=259, PETRI_TRANSITIONS=392} [2024-06-28 01:49:36,969 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 208 predicate places. [2024-06-28 01:49:36,969 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 392 transitions, 5247 flow [2024-06-28 01:49:36,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:36,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:36,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:36,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:49:36,970 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:36,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:36,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1478699887, now seen corresponding path program 3 times [2024-06-28 01:49:36,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:36,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203291116] [2024-06-28 01:49:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:36,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:39,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:39,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203291116] [2024-06-28 01:49:39,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203291116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:39,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:39,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:49:39,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212507251] [2024-06-28 01:49:39,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:39,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:49:39,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:39,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:49:39,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:49:39,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:49:39,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 392 transitions, 5247 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:39,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:39,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:49:39,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:43,330 INFO L124 PetriNetUnfolderBase]: 9018/14322 cut-off events. [2024-06-28 01:49:43,330 INFO L125 PetriNetUnfolderBase]: For 340768/340770 co-relation queries the response was YES. [2024-06-28 01:49:43,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87573 conditions, 14322 events. 9018/14322 cut-off events. For 340768/340770 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 96960 event pairs, 2206 based on Foata normal form. 2/14322 useless extension candidates. Maximal degree in co-relation 87448. Up to 12556 conditions per place. [2024-06-28 01:49:43,559 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 346 selfloop transitions, 87 changer transitions 0/440 dead transitions. [2024-06-28 01:49:43,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 440 transitions, 6429 flow [2024-06-28 01:49:43,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:49:43,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:49:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:49:43,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-28 01:49:43,561 INFO L175 Difference]: Start difference. First operand has 259 places, 392 transitions, 5247 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:49:43,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 440 transitions, 6429 flow [2024-06-28 01:49:44,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 440 transitions, 6292 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 01:49:44,691 INFO L231 Difference]: Finished difference. Result has 262 places, 396 transitions, 5361 flow [2024-06-28 01:49:44,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5110, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5361, PETRI_PLACES=262, PETRI_TRANSITIONS=396} [2024-06-28 01:49:44,692 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 211 predicate places. [2024-06-28 01:49:44,692 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 396 transitions, 5361 flow [2024-06-28 01:49:44,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:44,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:44,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:44,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:49:44,693 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:44,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1525755093, now seen corresponding path program 2 times [2024-06-28 01:49:44,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:44,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468378630] [2024-06-28 01:49:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:44,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:47,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:47,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468378630] [2024-06-28 01:49:47,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468378630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:47,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:47,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:49:47,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894797598] [2024-06-28 01:49:47,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:47,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:49:47,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:47,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:49:47,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:49:47,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:49:47,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 396 transitions, 5361 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:47,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:47,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:49:47,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:51,265 INFO L124 PetriNetUnfolderBase]: 9048/14376 cut-off events. [2024-06-28 01:49:51,265 INFO L125 PetriNetUnfolderBase]: For 348120/348136 co-relation queries the response was YES. [2024-06-28 01:49:51,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88183 conditions, 14376 events. 9048/14376 cut-off events. For 348120/348136 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 97415 event pairs, 2198 based on Foata normal form. 16/14390 useless extension candidates. Maximal degree in co-relation 88057. Up to 13005 conditions per place. [2024-06-28 01:49:51,460 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 389 selfloop transitions, 36 changer transitions 0/432 dead transitions. [2024-06-28 01:49:51,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 432 transitions, 6395 flow [2024-06-28 01:49:51,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:49:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:49:51,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 01:49:51,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-06-28 01:49:51,462 INFO L175 Difference]: Start difference. First operand has 262 places, 396 transitions, 5361 flow. Second operand 7 states and 158 transitions. [2024-06-28 01:49:51,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 432 transitions, 6395 flow [2024-06-28 01:49:52,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 432 transitions, 6214 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 01:49:52,749 INFO L231 Difference]: Finished difference. Result has 264 places, 399 transitions, 5347 flow [2024-06-28 01:49:52,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5180, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5347, PETRI_PLACES=264, PETRI_TRANSITIONS=399} [2024-06-28 01:49:52,750 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 213 predicate places. [2024-06-28 01:49:52,750 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 399 transitions, 5347 flow [2024-06-28 01:49:52,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:52,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:52,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:52,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:49:52,751 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:52,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1335773175, now seen corresponding path program 3 times [2024-06-28 01:49:52,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:52,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965902075] [2024-06-28 01:49:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:52,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:55,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:55,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965902075] [2024-06-28 01:49:55,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965902075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:55,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:55,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:49:55,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731271343] [2024-06-28 01:49:55,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:55,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:49:55,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:55,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:49:55,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:49:55,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:49:55,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 399 transitions, 5347 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:55,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:55,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:49:55,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:59,346 INFO L124 PetriNetUnfolderBase]: 9043/14369 cut-off events. [2024-06-28 01:49:59,346 INFO L125 PetriNetUnfolderBase]: For 357344/357360 co-relation queries the response was YES. [2024-06-28 01:49:59,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88250 conditions, 14369 events. 9043/14369 cut-off events. For 357344/357360 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 97307 event pairs, 2189 based on Foata normal form. 16/14383 useless extension candidates. Maximal degree in co-relation 88123. Up to 12920 conditions per place. [2024-06-28 01:49:59,505 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 384 selfloop transitions, 44 changer transitions 0/435 dead transitions. [2024-06-28 01:49:59,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 435 transitions, 6393 flow [2024-06-28 01:49:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:49:59,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:49:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 01:49:59,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-06-28 01:49:59,507 INFO L175 Difference]: Start difference. First operand has 264 places, 399 transitions, 5347 flow. Second operand 7 states and 158 transitions. [2024-06-28 01:49:59,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 435 transitions, 6393 flow [2024-06-28 01:50:00,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 435 transitions, 6250 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 01:50:00,626 INFO L231 Difference]: Finished difference. Result has 266 places, 402 transitions, 5392 flow [2024-06-28 01:50:00,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5204, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5392, PETRI_PLACES=266, PETRI_TRANSITIONS=402} [2024-06-28 01:50:00,628 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 215 predicate places. [2024-06-28 01:50:00,629 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 402 transitions, 5392 flow [2024-06-28 01:50:00,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:00,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:00,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:00,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:50:00,629 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:00,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:00,630 INFO L85 PathProgramCache]: Analyzing trace with hash 190253919, now seen corresponding path program 4 times [2024-06-28 01:50:00,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:00,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972403245] [2024-06-28 01:50:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:00,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:03,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:03,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:03,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972403245] [2024-06-28 01:50:03,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972403245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:03,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:03,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:03,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944060772] [2024-06-28 01:50:03,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:03,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:03,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:03,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:03,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:03,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:50:03,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 402 transitions, 5392 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:03,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:03,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:50:03,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:06,814 INFO L124 PetriNetUnfolderBase]: 9037/14355 cut-off events. [2024-06-28 01:50:06,814 INFO L125 PetriNetUnfolderBase]: For 367080/367090 co-relation queries the response was YES. [2024-06-28 01:50:06,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88537 conditions, 14355 events. 9037/14355 cut-off events. For 367080/367090 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 97144 event pairs, 2227 based on Foata normal form. 5/14357 useless extension candidates. Maximal degree in co-relation 88409. Up to 12586 conditions per place. [2024-06-28 01:50:07,039 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 345 selfloop transitions, 87 changer transitions 0/439 dead transitions. [2024-06-28 01:50:07,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 439 transitions, 6362 flow [2024-06-28 01:50:07,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:50:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:50:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 01:50:07,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-28 01:50:07,041 INFO L175 Difference]: Start difference. First operand has 266 places, 402 transitions, 5392 flow. Second operand 8 states and 184 transitions. [2024-06-28 01:50:07,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 439 transitions, 6362 flow [2024-06-28 01:50:08,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 439 transitions, 6160 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-28 01:50:08,309 INFO L231 Difference]: Finished difference. Result has 269 places, 402 transitions, 5373 flow [2024-06-28 01:50:08,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5190, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5373, PETRI_PLACES=269, PETRI_TRANSITIONS=402} [2024-06-28 01:50:08,310 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 218 predicate places. [2024-06-28 01:50:08,310 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 402 transitions, 5373 flow [2024-06-28 01:50:08,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:08,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:08,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:08,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:50:08,310 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:08,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:08,311 INFO L85 PathProgramCache]: Analyzing trace with hash 749326260, now seen corresponding path program 1 times [2024-06-28 01:50:08,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:08,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329052469] [2024-06-28 01:50:08,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:08,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:11,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:11,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329052469] [2024-06-28 01:50:11,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329052469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:11,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:11,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:11,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128668065] [2024-06-28 01:50:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:11,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:11,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:11,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:50:11,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 402 transitions, 5373 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:11,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:11,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:50:11,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:15,150 INFO L124 PetriNetUnfolderBase]: 9719/15121 cut-off events. [2024-06-28 01:50:15,150 INFO L125 PetriNetUnfolderBase]: For 460778/460813 co-relation queries the response was YES. [2024-06-28 01:50:15,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96452 conditions, 15121 events. 9719/15121 cut-off events. For 460778/460813 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 100823 event pairs, 1426 based on Foata normal form. 50/15169 useless extension candidates. Maximal degree in co-relation 96323. Up to 12380 conditions per place. [2024-06-28 01:50:15,359 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 413 selfloop transitions, 79 changer transitions 0/499 dead transitions. [2024-06-28 01:50:15,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 499 transitions, 7056 flow [2024-06-28 01:50:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:15,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:15,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-28 01:50:15,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551063829787234 [2024-06-28 01:50:15,361 INFO L175 Difference]: Start difference. First operand has 269 places, 402 transitions, 5373 flow. Second operand 10 states and 259 transitions. [2024-06-28 01:50:15,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 499 transitions, 7056 flow [2024-06-28 01:50:16,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 499 transitions, 6791 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:50:16,919 INFO L231 Difference]: Finished difference. Result has 272 places, 411 transitions, 5493 flow [2024-06-28 01:50:16,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5108, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5493, PETRI_PLACES=272, PETRI_TRANSITIONS=411} [2024-06-28 01:50:16,920 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 221 predicate places. [2024-06-28 01:50:16,920 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 411 transitions, 5493 flow [2024-06-28 01:50:16,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:16,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:16,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:16,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:50:16,921 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:16,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:16,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1589934912, now seen corresponding path program 2 times [2024-06-28 01:50:16,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:16,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883147228] [2024-06-28 01:50:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:16,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:19,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:19,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883147228] [2024-06-28 01:50:19,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883147228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:19,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:19,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:19,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935047389] [2024-06-28 01:50:19,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:19,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:19,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:19,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:19,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:19,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:50:19,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 411 transitions, 5493 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:19,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:19,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:50:19,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:23,824 INFO L124 PetriNetUnfolderBase]: 10067/15675 cut-off events. [2024-06-28 01:50:23,824 INFO L125 PetriNetUnfolderBase]: For 507620/507655 co-relation queries the response was YES. [2024-06-28 01:50:23,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102539 conditions, 15675 events. 10067/15675 cut-off events. For 507620/507655 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 105390 event pairs, 1848 based on Foata normal form. 54/15727 useless extension candidates. Maximal degree in co-relation 102408. Up to 13400 conditions per place. [2024-06-28 01:50:24,042 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 414 selfloop transitions, 73 changer transitions 0/494 dead transitions. [2024-06-28 01:50:24,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 494 transitions, 6908 flow [2024-06-28 01:50:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:24,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:24,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-28 01:50:24,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361702127659574 [2024-06-28 01:50:24,044 INFO L175 Difference]: Start difference. First operand has 272 places, 411 transitions, 5493 flow. Second operand 10 states and 252 transitions. [2024-06-28 01:50:24,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 494 transitions, 6908 flow [2024-06-28 01:50:25,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 494 transitions, 6737 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 01:50:25,637 INFO L231 Difference]: Finished difference. Result has 276 places, 414 transitions, 5576 flow [2024-06-28 01:50:25,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5330, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5576, PETRI_PLACES=276, PETRI_TRANSITIONS=414} [2024-06-28 01:50:25,637 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 225 predicate places. [2024-06-28 01:50:25,638 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 414 transitions, 5576 flow [2024-06-28 01:50:25,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:25,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:25,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:25,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:50:25,638 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:25,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:25,639 INFO L85 PathProgramCache]: Analyzing trace with hash 329002650, now seen corresponding path program 3 times [2024-06-28 01:50:25,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:25,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277971486] [2024-06-28 01:50:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:25,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:28,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:28,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277971486] [2024-06-28 01:50:28,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277971486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:28,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:28,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:28,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744125522] [2024-06-28 01:50:28,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:28,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:28,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:28,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:28,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:29,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:50:29,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 414 transitions, 5576 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:29,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:29,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:50:29,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:32,809 INFO L124 PetriNetUnfolderBase]: 10021/15594 cut-off events. [2024-06-28 01:50:32,809 INFO L125 PetriNetUnfolderBase]: For 464504/464530 co-relation queries the response was YES. [2024-06-28 01:50:32,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100446 conditions, 15594 events. 10021/15594 cut-off events. For 464504/464530 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 104649 event pairs, 1863 based on Foata normal form. 44/15636 useless extension candidates. Maximal degree in co-relation 100313. Up to 13334 conditions per place. [2024-06-28 01:50:33,016 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 399 selfloop transitions, 65 changer transitions 0/471 dead transitions. [2024-06-28 01:50:33,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 471 transitions, 6773 flow [2024-06-28 01:50:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:50:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:50:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:50:33,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 01:50:33,018 INFO L175 Difference]: Start difference. First operand has 276 places, 414 transitions, 5576 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:50:33,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 471 transitions, 6773 flow [2024-06-28 01:50:34,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 471 transitions, 6526 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-28 01:50:34,729 INFO L231 Difference]: Finished difference. Result has 276 places, 415 transitions, 5507 flow [2024-06-28 01:50:34,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5349, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5507, PETRI_PLACES=276, PETRI_TRANSITIONS=415} [2024-06-28 01:50:34,729 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 225 predicate places. [2024-06-28 01:50:34,729 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 415 transitions, 5507 flow [2024-06-28 01:50:34,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:34,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:34,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:34,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:50:34,730 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:34,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1698741564, now seen corresponding path program 1 times [2024-06-28 01:50:34,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:34,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622467756] [2024-06-28 01:50:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:34,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:37,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:37,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622467756] [2024-06-28 01:50:37,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622467756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:37,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:37,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:37,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244916925] [2024-06-28 01:50:37,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:37,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:37,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:37,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:37,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:50:37,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 415 transitions, 5507 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:37,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:37,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:50:37,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:42,395 INFO L124 PetriNetUnfolderBase]: 10517/16207 cut-off events. [2024-06-28 01:50:42,395 INFO L125 PetriNetUnfolderBase]: For 471857/471871 co-relation queries the response was YES. [2024-06-28 01:50:42,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104264 conditions, 16207 events. 10517/16207 cut-off events. For 471857/471871 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 107902 event pairs, 1863 based on Foata normal form. 15/16219 useless extension candidates. Maximal degree in co-relation 104130. Up to 12608 conditions per place. [2024-06-28 01:50:42,609 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 343 selfloop transitions, 167 changer transitions 0/517 dead transitions. [2024-06-28 01:50:42,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 517 transitions, 7545 flow [2024-06-28 01:50:42,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:50:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:50:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-06-28 01:50:42,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-28 01:50:42,611 INFO L175 Difference]: Start difference. First operand has 276 places, 415 transitions, 5507 flow. Second operand 11 states and 282 transitions. [2024-06-28 01:50:42,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 517 transitions, 7545 flow [2024-06-28 01:50:44,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 517 transitions, 7404 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:50:44,168 INFO L231 Difference]: Finished difference. Result has 283 places, 432 transitions, 6150 flow [2024-06-28 01:50:44,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5366, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6150, PETRI_PLACES=283, PETRI_TRANSITIONS=432} [2024-06-28 01:50:44,169 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 232 predicate places. [2024-06-28 01:50:44,169 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 432 transitions, 6150 flow [2024-06-28 01:50:44,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:44,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:44,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:44,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:50:44,170 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:44,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:44,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1545403798, now seen corresponding path program 2 times [2024-06-28 01:50:44,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:44,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608322702] [2024-06-28 01:50:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:44,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:47,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:47,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:47,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608322702] [2024-06-28 01:50:47,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608322702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:47,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:47,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:47,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383960890] [2024-06-28 01:50:47,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:47,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:47,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:47,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:47,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:47,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:50:47,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 432 transitions, 6150 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:47,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:47,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:50:47,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:51,786 INFO L124 PetriNetUnfolderBase]: 10609/16317 cut-off events. [2024-06-28 01:50:51,786 INFO L125 PetriNetUnfolderBase]: For 515485/515495 co-relation queries the response was YES. [2024-06-28 01:50:51,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109946 conditions, 16317 events. 10609/16317 cut-off events. For 515485/515495 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 108358 event pairs, 1903 based on Foata normal form. 7/16321 useless extension candidates. Maximal degree in co-relation 109809. Up to 12676 conditions per place. [2024-06-28 01:50:51,987 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 333 selfloop transitions, 169 changer transitions 0/509 dead transitions. [2024-06-28 01:50:51,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 509 transitions, 7890 flow [2024-06-28 01:50:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:51,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-28 01:50:51,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551063829787234 [2024-06-28 01:50:51,988 INFO L175 Difference]: Start difference. First operand has 283 places, 432 transitions, 6150 flow. Second operand 10 states and 259 transitions. [2024-06-28 01:50:51,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 509 transitions, 7890 flow [2024-06-28 01:50:54,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 509 transitions, 7543 flow, removed 134 selfloop flow, removed 5 redundant places. [2024-06-28 01:50:54,199 INFO L231 Difference]: Finished difference. Result has 288 places, 437 transitions, 6283 flow [2024-06-28 01:50:54,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5859, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6283, PETRI_PLACES=288, PETRI_TRANSITIONS=437} [2024-06-28 01:50:54,200 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 237 predicate places. [2024-06-28 01:50:54,200 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 437 transitions, 6283 flow [2024-06-28 01:50:54,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:54,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:54,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:54,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:50:54,201 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:54,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:54,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1905544734, now seen corresponding path program 3 times [2024-06-28 01:50:54,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:54,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260817576] [2024-06-28 01:50:54,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:54,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:57,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:57,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260817576] [2024-06-28 01:50:57,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260817576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:57,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:57,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:57,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299614581] [2024-06-28 01:50:57,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:57,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:57,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:57,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:57,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:57,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:50:57,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 437 transitions, 6283 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:57,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:57,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:50:57,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:01,791 INFO L124 PetriNetUnfolderBase]: 10597/16330 cut-off events. [2024-06-28 01:51:01,791 INFO L125 PetriNetUnfolderBase]: For 505043/505053 co-relation queries the response was YES. [2024-06-28 01:51:01,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107517 conditions, 16330 events. 10597/16330 cut-off events. For 505043/505053 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 108675 event pairs, 2013 based on Foata normal form. 7/16334 useless extension candidates. Maximal degree in co-relation 107378. Up to 12668 conditions per place. [2024-06-28 01:51:02,054 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 326 selfloop transitions, 155 changer transitions 0/488 dead transitions. [2024-06-28 01:51:02,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 488 transitions, 7605 flow [2024-06-28 01:51:02,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:51:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:51:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:51:02,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-28 01:51:02,056 INFO L175 Difference]: Start difference. First operand has 288 places, 437 transitions, 6283 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:51:02,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 488 transitions, 7605 flow [2024-06-28 01:51:03,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 488 transitions, 7178 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 01:51:03,937 INFO L231 Difference]: Finished difference. Result has 289 places, 437 transitions, 6176 flow [2024-06-28 01:51:03,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5858, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6176, PETRI_PLACES=289, PETRI_TRANSITIONS=437} [2024-06-28 01:51:03,939 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 238 predicate places. [2024-06-28 01:51:03,940 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 437 transitions, 6176 flow [2024-06-28 01:51:03,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:03,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:03,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:03,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:51:03,940 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:03,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1905821316, now seen corresponding path program 1 times [2024-06-28 01:51:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:03,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590010844] [2024-06-28 01:51:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:03,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:07,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:07,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590010844] [2024-06-28 01:51:07,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590010844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:07,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:07,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:51:07,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286385058] [2024-06-28 01:51:07,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:07,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:51:07,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:07,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:51:07,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:51:07,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:51:07,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 437 transitions, 6176 flow. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:07,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:07,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:51:07,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:12,264 INFO L124 PetriNetUnfolderBase]: 11040/17089 cut-off events. [2024-06-28 01:51:12,264 INFO L125 PetriNetUnfolderBase]: For 564734/564760 co-relation queries the response was YES. [2024-06-28 01:51:12,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112635 conditions, 17089 events. 11040/17089 cut-off events. For 564734/564760 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 115714 event pairs, 1893 based on Foata normal form. 36/17123 useless extension candidates. Maximal degree in co-relation 112495. Up to 13620 conditions per place. [2024-06-28 01:51:12,491 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 427 selfloop transitions, 68 changer transitions 0/502 dead transitions. [2024-06-28 01:51:12,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 502 transitions, 7762 flow [2024-06-28 01:51:12,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:51:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:51:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:51:12,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-28 01:51:12,492 INFO L175 Difference]: Start difference. First operand has 289 places, 437 transitions, 6176 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:51:12,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 502 transitions, 7762 flow