./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix008_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/mix008_tso.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix008_tso.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 11:52:55,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:52:55,647 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:52:55,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:52:55,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:52:55,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:52:55,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:52:55,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:52:55,681 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:52:55,685 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:52:55,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:52:55,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:52:55,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:52:55,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:52:55,688 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:52:55,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:52:55,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:52:55,689 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:52:55,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:52:55,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:52:55,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:52:55,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:52:55,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:52:55,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:52:55,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:52:55,691 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:52:55,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:52:55,692 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:52:55,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:52:55,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:52:55,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:52:55,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:52:55,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:52:55,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:52:55,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:52:55,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:52:55,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:52:55,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:52:55,697 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:52:55,697 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:52:55,697 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:52:55,698 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:52:55,698 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:52:55,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:52:55,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:52:56,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:52:56,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:52:56,011 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:52:56,011 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:52:56,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix008_tso.oepc.yml/witness.yml [2024-06-14 11:52:56,287 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:52:56,287 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:52:56,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i [2024-06-14 11:52:57,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:52:57,453 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:52:57,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i [2024-06-14 11:52:57,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06038afd7/3976f408540b4996b2d94e46e0a3158c/FLAGfba8b0d16 [2024-06-14 11:52:57,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06038afd7/3976f408540b4996b2d94e46e0a3158c [2024-06-14 11:52:57,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:52:57,482 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:52:57,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:52:57,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:52:57,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:52:57,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:52:56" (1/2) ... [2024-06-14 11:52:57,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cae0219 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:52:57, skipping insertion in model container [2024-06-14 11:52:57,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:52:56" (1/2) ... [2024-06-14 11:52:57,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23e9a625 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:52:57, skipping insertion in model container [2024-06-14 11:52:57,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:52:57" (2/2) ... [2024-06-14 11:52:57,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cae0219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:57, skipping insertion in model container [2024-06-14 11:52:57,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:52:57" (2/2) ... [2024-06-14 11:52:57,490 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:52:57,747 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:52:57,747 INFO L97 edCorrectnessWitness]: Location invariant before [L930-L930] ((((((((((((((((((((((((((((((((((((! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) [2024-06-14 11:52:57,748 INFO L97 edCorrectnessWitness]: Location invariant before [L931-L931] ((((((((((((((((((((((((((((((((((((! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) [2024-06-14 11:52:57,748 INFO L97 edCorrectnessWitness]: Location invariant before [L926-L926] ((((((((((((((((((((((((((((((((((((! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) [2024-06-14 11:52:57,748 INFO L97 edCorrectnessWitness]: Location invariant before [L928-L928] ((((((((((((((((((((((((((((((((((((! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || ((0 <= __unbuffered_p3_EBX && __unbuffered_p3_EBX <= 1) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) [2024-06-14 11:52:57,748 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:52:57,748 INFO L106 edCorrectnessWitness]: ghost_update [L924-L924] multithreaded = 1; [2024-06-14 11:52:57,774 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:52:58,127 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:52:58,142 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:52:58,260 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:52:58,293 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:52:58,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58 WrapperNode [2024-06-14 11:52:58,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:52:58,294 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:52:58,294 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:52:58,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:52:58,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (1/1) ... [2024-06-14 11:52:58,323 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (1/1) ... [2024-06-14 11:52:58,379 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 286 [2024-06-14 11:52:58,380 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:52:58,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:52:58,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:52:58,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:52:58,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (1/1) ... [2024-06-14 11:52:58,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (1/1) ... [2024-06-14 11:52:58,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (1/1) ... [2024-06-14 11:52:58,409 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 11:52:58,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (1/1) ... [2024-06-14 11:52:58,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (1/1) ... [2024-06-14 11:52:58,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (1/1) ... [2024-06-14 11:52:58,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (1/1) ... [2024-06-14 11:52:58,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (1/1) ... [2024-06-14 11:52:58,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (1/1) ... [2024-06-14 11:52:58,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:52:58,456 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:52:58,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:52:58,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:52:58,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (1/1) ... [2024-06-14 11:52:58,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:52:58,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:52:58,487 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) [2024-06-14 11:52:58,563 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 [2024-06-14 11:52:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:52:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:52:58,608 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:52:58,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:52:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:52:58,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:52:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 11:52:58,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 11:52:58,609 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-14 11:52:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-14 11:52:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:52:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:52:58,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:52:58,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:52:58,612 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:52:58,756 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:52:58,758 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:52:59,177 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:52:59,177 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:52:59,427 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:52:59,428 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:52:59,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:52:59 BoogieIcfgContainer [2024-06-14 11:52:59,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:52:59,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:52:59,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:52:59,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:52:59,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:52:56" (1/4) ... [2024-06-14 11:52:59,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453baf8a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:52:59, skipping insertion in model container [2024-06-14 11:52:59,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:52:57" (2/4) ... [2024-06-14 11:52:59,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453baf8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:52:59, skipping insertion in model container [2024-06-14 11:52:59,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:52:58" (3/4) ... [2024-06-14 11:52:59,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453baf8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:52:59, skipping insertion in model container [2024-06-14 11:52:59,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:52:59" (4/4) ... [2024-06-14 11:52:59,435 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_tso.oepc.i [2024-06-14 11:52:59,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:52:59,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-14 11:52:59,449 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:52:59,507 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:52:59,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-14 11:52:59,595 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-14 11:52:59,596 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:52:59,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 11:52:59,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-14 11:52:59,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-14 11:52:59,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:52:59,618 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;@7624c0e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:52:59,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-14 11:52:59,621 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:52:59,622 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 11:52:59,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:52:59,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:59,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:52:59,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:52:59,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1832541073, now seen corresponding path program 1 times [2024-06-14 11:52:59,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:59,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145233811] [2024-06-14 11:52:59,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:59,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:01,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:01,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145233811] [2024-06-14 11:53:01,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145233811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:01,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:01,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:53:01,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132045979] [2024-06-14 11:53:01,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:01,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:53:01,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:01,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:53:01,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:53:01,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-14 11:53:01,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:01,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:01,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-14 11:53:01,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:04,527 INFO L124 PetriNetUnfolderBase]: 13599/18673 cut-off events. [2024-06-14 11:53:04,528 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2024-06-14 11:53:04,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37529 conditions, 18673 events. 13599/18673 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 102439 event pairs, 10515 based on Foata normal form. 1/18218 useless extension candidates. Maximal degree in co-relation 37513. Up to 18345 conditions per place. [2024-06-14 11:53:04,643 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 47 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-14 11:53:04,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 241 flow [2024-06-14 11:53:04,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:53:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:53:04,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-06-14 11:53:04,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2024-06-14 11:53:04,655 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 92 transitions. [2024-06-14 11:53:04,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 241 flow [2024-06-14 11:53:04,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 234 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 11:53:04,667 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-14 11:53:04,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-14 11:53:04,672 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-14 11:53:04,672 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-14 11:53:04,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:04,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:04,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:04,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:53:04,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:53:04,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash 135423152, now seen corresponding path program 1 times [2024-06-14 11:53:04,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:04,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901618010] [2024-06-14 11:53:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:04,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:06,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:06,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901618010] [2024-06-14 11:53:06,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901618010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:06,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:06,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:53:06,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543210172] [2024-06-14 11:53:06,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:06,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:53:06,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:06,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:53:06,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:53:06,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 11:53:06,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:06,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:06,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 11:53:06,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:08,956 INFO L124 PetriNetUnfolderBase]: 15578/20978 cut-off events. [2024-06-14 11:53:08,956 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2024-06-14 11:53:08,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47508 conditions, 20978 events. 15578/20978 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 111403 event pairs, 10885 based on Foata normal form. 4/20979 useless extension candidates. Maximal degree in co-relation 47493. Up to 20929 conditions per place. [2024-06-14 11:53:09,025 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 58 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-06-14 11:53:09,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 335 flow [2024-06-14 11:53:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:53:09,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:53:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-06-14 11:53:09,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-06-14 11:53:09,027 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 115 transitions. [2024-06-14 11:53:09,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 335 flow [2024-06-14 11:53:09,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:53:09,029 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 183 flow [2024-06-14 11:53:09,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-06-14 11:53:09,030 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-06-14 11:53:09,030 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 183 flow [2024-06-14 11:53:09,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:09,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:09,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:09,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:53:09,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:53:09,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:09,032 INFO L85 PathProgramCache]: Analyzing trace with hash -96848168, now seen corresponding path program 1 times [2024-06-14 11:53:09,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:09,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591884727] [2024-06-14 11:53:09,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:09,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:10,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:10,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591884727] [2024-06-14 11:53:10,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591884727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:10,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:10,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:53:10,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942711403] [2024-06-14 11:53:10,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:10,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:53:10,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:10,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:53:10,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:53:10,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 11:53:10,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:10,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:10,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 11:53:10,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:13,540 INFO L124 PetriNetUnfolderBase]: 15596/21016 cut-off events. [2024-06-14 11:53:13,541 INFO L125 PetriNetUnfolderBase]: For 11411/11411 co-relation queries the response was YES. [2024-06-14 11:53:13,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52632 conditions, 21016 events. 15596/21016 cut-off events. For 11411/11411 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 111888 event pairs, 8781 based on Foata normal form. 7/21018 useless extension candidates. Maximal degree in co-relation 52615. Up to 20850 conditions per place. [2024-06-14 11:53:13,654 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 76 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-14 11:53:13,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 102 transitions, 551 flow [2024-06-14 11:53:13,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:53:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:53:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-14 11:53:13,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-14 11:53:13,661 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 183 flow. Second operand 5 states and 150 transitions. [2024-06-14 11:53:13,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 102 transitions, 551 flow [2024-06-14 11:53:13,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 102 transitions, 532 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 11:53:13,669 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 314 flow [2024-06-14 11:53:13,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-06-14 11:53:13,671 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-06-14 11:53:13,671 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 314 flow [2024-06-14 11:53:13,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:13,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:13,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:13,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:53:13,673 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:53:13,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:13,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1418237399, now seen corresponding path program 1 times [2024-06-14 11:53:13,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:13,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197083401] [2024-06-14 11:53:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:13,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:15,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:15,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197083401] [2024-06-14 11:53:15,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197083401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:15,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:15,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:53:15,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466543287] [2024-06-14 11:53:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:15,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:53:15,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:15,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:53:15,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:53:15,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 11:53:15,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:15,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:15,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 11:53:15,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:18,232 INFO L124 PetriNetUnfolderBase]: 15625/21059 cut-off events. [2024-06-14 11:53:18,232 INFO L125 PetriNetUnfolderBase]: For 27160/27166 co-relation queries the response was YES. [2024-06-14 11:53:18,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60978 conditions, 21059 events. 15625/21059 cut-off events. For 27160/27166 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 112257 event pairs, 7330 based on Foata normal form. 18/21072 useless extension candidates. Maximal degree in co-relation 60958. Up to 20815 conditions per place. [2024-06-14 11:53:18,309 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 83 selfloop transitions, 25 changer transitions 0/113 dead transitions. [2024-06-14 11:53:18,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 696 flow [2024-06-14 11:53:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:53:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:53:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-06-14 11:53:18,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-06-14 11:53:18,311 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 314 flow. Second operand 6 states and 172 transitions. [2024-06-14 11:53:18,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 696 flow [2024-06-14 11:53:18,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 684 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-14 11:53:18,319 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 391 flow [2024-06-14 11:53:18,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=391, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-06-14 11:53:18,320 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-06-14 11:53:18,320 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 391 flow [2024-06-14 11:53:18,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:18,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:18,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:18,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:53:18,321 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:53:18,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash 783900758, now seen corresponding path program 1 times [2024-06-14 11:53:18,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:18,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47789849] [2024-06-14 11:53:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:18,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:20,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:20,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47789849] [2024-06-14 11:53:20,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47789849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:20,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:20,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:53:20,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426429530] [2024-06-14 11:53:20,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:20,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:53:20,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:20,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:53:20,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:53:20,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 11:53:20,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 391 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) [2024-06-14 11:53:20,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:20,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 11:53:20,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:23,079 INFO L124 PetriNetUnfolderBase]: 13627/18736 cut-off events. [2024-06-14 11:53:23,079 INFO L125 PetriNetUnfolderBase]: For 35019/35019 co-relation queries the response was YES. [2024-06-14 11:53:23,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58500 conditions, 18736 events. 13627/18736 cut-off events. For 35019/35019 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 103541 event pairs, 7453 based on Foata normal form. 3/18534 useless extension candidates. Maximal degree in co-relation 58477. Up to 18372 conditions per place. [2024-06-14 11:53:23,174 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 70 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-06-14 11:53:23,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 595 flow [2024-06-14 11:53:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:53:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:53:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-14 11:53:23,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:53:23,176 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 391 flow. Second operand 5 states and 120 transitions. [2024-06-14 11:53:23,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 595 flow [2024-06-14 11:53:23,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 526 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-14 11:53:23,186 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 353 flow [2024-06-14 11:53:23,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=353, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-06-14 11:53:23,186 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2024-06-14 11:53:23,187 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 353 flow [2024-06-14 11:53:23,187 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) [2024-06-14 11:53:23,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:23,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:23,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:53:23,187 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:53:23,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:23,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1469657746, now seen corresponding path program 1 times [2024-06-14 11:53:23,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:23,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291407256] [2024-06-14 11:53:23,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:23,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:25,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:25,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291407256] [2024-06-14 11:53:25,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291407256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:25,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:25,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:53:25,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763309134] [2024-06-14 11:53:25,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:25,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:53:25,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:25,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:53:25,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:53:25,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 11:53:25,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 353 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) [2024-06-14 11:53:25,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:25,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 11:53:25,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:28,042 INFO L124 PetriNetUnfolderBase]: 13609/18704 cut-off events. [2024-06-14 11:53:28,042 INFO L125 PetriNetUnfolderBase]: For 41020/41020 co-relation queries the response was YES. [2024-06-14 11:53:28,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59524 conditions, 18704 events. 13609/18704 cut-off events. For 41020/41020 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 102588 event pairs, 7129 based on Foata normal form. 6/18499 useless extension candidates. Maximal degree in co-relation 59499. Up to 18318 conditions per place. [2024-06-14 11:53:28,152 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 78 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-06-14 11:53:28,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 98 transitions, 629 flow [2024-06-14 11:53:28,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:53:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:53:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-14 11:53:28,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-14 11:53:28,154 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 353 flow. Second operand 6 states and 143 transitions. [2024-06-14 11:53:28,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 98 transitions, 629 flow [2024-06-14 11:53:28,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 98 transitions, 600 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 11:53:28,170 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 399 flow [2024-06-14 11:53:28,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=399, PETRI_PLACES=72, PETRI_TRANSITIONS=73} [2024-06-14 11:53:28,170 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2024-06-14 11:53:28,171 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 399 flow [2024-06-14 11:53:28,171 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) [2024-06-14 11:53:28,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:28,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:28,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:53:28,171 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:53:28,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:28,172 INFO L85 PathProgramCache]: Analyzing trace with hash -46827459, now seen corresponding path program 1 times [2024-06-14 11:53:28,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:28,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894993722] [2024-06-14 11:53:28,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:28,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:29,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:29,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894993722] [2024-06-14 11:53:29,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894993722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:29,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:29,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:53:29,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913229167] [2024-06-14 11:53:29,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:29,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:53:29,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:29,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:53:29,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:53:30,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:53:30,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 399 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:30,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:30,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:53:30,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:33,240 INFO L124 PetriNetUnfolderBase]: 15611/21041 cut-off events. [2024-06-14 11:53:33,240 INFO L125 PetriNetUnfolderBase]: For 64538/64550 co-relation queries the response was YES. [2024-06-14 11:53:33,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72147 conditions, 21041 events. 15611/21041 cut-off events. For 64538/64550 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 111558 event pairs, 8453 based on Foata normal form. 14/21050 useless extension candidates. Maximal degree in co-relation 72122. Up to 20869 conditions per place. [2024-06-14 11:53:33,327 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 77 selfloop transitions, 25 changer transitions 0/107 dead transitions. [2024-06-14 11:53:33,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 746 flow [2024-06-14 11:53:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:53:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:53:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-14 11:53:33,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-14 11:53:33,328 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 399 flow. Second operand 6 states and 147 transitions. [2024-06-14 11:53:33,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 746 flow [2024-06-14 11:53:33,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 107 transitions, 703 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 11:53:33,344 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 452 flow [2024-06-14 11:53:33,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2024-06-14 11:53:33,345 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2024-06-14 11:53:33,345 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 452 flow [2024-06-14 11:53:33,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:33,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:33,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:33,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:53:33,346 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:53:33,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:33,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1709373877, now seen corresponding path program 2 times [2024-06-14 11:53:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:33,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386627741] [2024-06-14 11:53:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:33,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:35,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:35,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386627741] [2024-06-14 11:53:35,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386627741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:35,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:35,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:53:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630353225] [2024-06-14 11:53:35,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:35,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:53:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:53:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:53:35,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:53:35,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 452 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:35,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:35,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:53:35,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:38,189 INFO L124 PetriNetUnfolderBase]: 15587/20993 cut-off events. [2024-06-14 11:53:38,190 INFO L125 PetriNetUnfolderBase]: For 75548/75552 co-relation queries the response was YES. [2024-06-14 11:53:38,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73719 conditions, 20993 events. 15587/20993 cut-off events. For 75548/75552 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 111334 event pairs, 8473 based on Foata normal form. 4/20986 useless extension candidates. Maximal degree in co-relation 73693. Up to 20839 conditions per place. [2024-06-14 11:53:38,291 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 70 selfloop transitions, 26 changer transitions 0/101 dead transitions. [2024-06-14 11:53:38,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 101 transitions, 706 flow [2024-06-14 11:53:38,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:53:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:53:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-14 11:53:38,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-06-14 11:53:38,293 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 452 flow. Second operand 6 states and 142 transitions. [2024-06-14 11:53:38,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 101 transitions, 706 flow [2024-06-14 11:53:38,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 663 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 11:53:38,313 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 472 flow [2024-06-14 11:53:38,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2024-06-14 11:53:38,314 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-06-14 11:53:38,314 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 472 flow [2024-06-14 11:53:38,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:38,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:38,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:38,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:53:38,315 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:53:38,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:38,315 INFO L85 PathProgramCache]: Analyzing trace with hash 52165679, now seen corresponding path program 1 times [2024-06-14 11:53:38,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:38,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488369718] [2024-06-14 11:53:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:38,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:40,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:40,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488369718] [2024-06-14 11:53:40,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488369718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:40,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:40,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:53:40,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230633733] [2024-06-14 11:53:40,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:40,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:53:40,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:40,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:53:40,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:53:40,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:53:40,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 472 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:40,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:40,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:53:40,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:43,498 INFO L124 PetriNetUnfolderBase]: 15953/21526 cut-off events. [2024-06-14 11:53:43,498 INFO L125 PetriNetUnfolderBase]: For 91348/91351 co-relation queries the response was YES. [2024-06-14 11:53:43,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77772 conditions, 21526 events. 15953/21526 cut-off events. For 91348/91351 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 114505 event pairs, 7538 based on Foata normal form. 14/21531 useless extension candidates. Maximal degree in co-relation 77745. Up to 20905 conditions per place. [2024-06-14 11:53:43,619 INFO L140 encePairwiseOnDemand]: 38/54 looper letters, 107 selfloop transitions, 55 changer transitions 0/167 dead transitions. [2024-06-14 11:53:43,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 167 transitions, 1356 flow [2024-06-14 11:53:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:53:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:53:43,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-14 11:53:43,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699074074074074 [2024-06-14 11:53:43,622 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 472 flow. Second operand 8 states and 203 transitions. [2024-06-14 11:53:43,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 167 transitions, 1356 flow [2024-06-14 11:53:43,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 167 transitions, 1193 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 11:53:43,686 INFO L231 Difference]: Finished difference. Result has 82 places, 110 transitions, 793 flow [2024-06-14 11:53:43,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=82, PETRI_TRANSITIONS=110} [2024-06-14 11:53:43,687 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2024-06-14 11:53:43,687 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 110 transitions, 793 flow [2024-06-14 11:53:43,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:43,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:43,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:43,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:53:43,688 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:53:43,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:43,691 INFO L85 PathProgramCache]: Analyzing trace with hash -330101253, now seen corresponding path program 2 times [2024-06-14 11:53:43,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:43,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152878166] [2024-06-14 11:53:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:43,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:45,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:45,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152878166] [2024-06-14 11:53:45,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152878166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:45,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:45,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:53:45,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982295066] [2024-06-14 11:53:45,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:45,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:53:45,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:45,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:53:45,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:53:45,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:53:45,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 110 transitions, 793 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:45,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:45,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:53:45,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:49,385 INFO L124 PetriNetUnfolderBase]: 16113/21738 cut-off events. [2024-06-14 11:53:49,385 INFO L125 PetriNetUnfolderBase]: For 119391/119400 co-relation queries the response was YES. [2024-06-14 11:53:49,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85649 conditions, 21738 events. 16113/21738 cut-off events. For 119391/119400 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 115637 event pairs, 7577 based on Foata normal form. 26/21755 useless extension candidates. Maximal degree in co-relation 85618. Up to 21017 conditions per place. [2024-06-14 11:53:49,541 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 93 selfloop transitions, 65 changer transitions 0/163 dead transitions. [2024-06-14 11:53:49,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 163 transitions, 1407 flow [2024-06-14 11:53:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:53:49,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:53:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-14 11:53:49,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-14 11:53:49,543 INFO L175 Difference]: Start difference. First operand has 82 places, 110 transitions, 793 flow. Second operand 7 states and 174 transitions. [2024-06-14 11:53:49,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 163 transitions, 1407 flow [2024-06-14 11:53:49,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 163 transitions, 1366 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-14 11:53:49,621 INFO L231 Difference]: Finished difference. Result has 87 places, 119 transitions, 1002 flow [2024-06-14 11:53:49,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1002, PETRI_PLACES=87, PETRI_TRANSITIONS=119} [2024-06-14 11:53:49,622 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-06-14 11:53:49,622 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 119 transitions, 1002 flow [2024-06-14 11:53:49,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:49,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:49,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:49,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:53:49,623 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:53:49,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:49,623 INFO L85 PathProgramCache]: Analyzing trace with hash -702531567, now seen corresponding path program 3 times [2024-06-14 11:53:49,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:49,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866721244] [2024-06-14 11:53:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:49,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:51,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:51,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866721244] [2024-06-14 11:53:51,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866721244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:51,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:51,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:53:51,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292942397] [2024-06-14 11:53:51,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:51,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:53:51,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:51,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:53:51,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:53:51,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:53:51,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 119 transitions, 1002 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:51,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:51,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:53:51,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:55,446 INFO L124 PetriNetUnfolderBase]: 16193/21860 cut-off events. [2024-06-14 11:53:55,447 INFO L125 PetriNetUnfolderBase]: For 140805/140813 co-relation queries the response was YES. [2024-06-14 11:53:55,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89775 conditions, 21860 events. 16193/21860 cut-off events. For 140805/140813 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 116343 event pairs, 7575 based on Foata normal form. 13/21846 useless extension candidates. Maximal degree in co-relation 89742. Up to 21059 conditions per place. [2024-06-14 11:53:55,556 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 94 selfloop transitions, 79 changer transitions 0/178 dead transitions. [2024-06-14 11:53:55,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 178 transitions, 1806 flow [2024-06-14 11:53:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:53:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:53:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-14 11:53:55,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-06-14 11:53:55,558 INFO L175 Difference]: Start difference. First operand has 87 places, 119 transitions, 1002 flow. Second operand 7 states and 176 transitions. [2024-06-14 11:53:55,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 178 transitions, 1806 flow [2024-06-14 11:53:55,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 178 transitions, 1637 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-14 11:53:55,666 INFO L231 Difference]: Finished difference. Result has 90 places, 133 transitions, 1211 flow [2024-06-14 11:53:55,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1211, PETRI_PLACES=90, PETRI_TRANSITIONS=133} [2024-06-14 11:53:55,667 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-06-14 11:53:55,667 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 133 transitions, 1211 flow [2024-06-14 11:53:55,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:55,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:55,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:55,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:53:55,668 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:53:55,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash 703168717, now seen corresponding path program 4 times [2024-06-14 11:53:55,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:55,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317103834] [2024-06-14 11:53:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:55,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:57,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:57,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317103834] [2024-06-14 11:53:57,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317103834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:57,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:57,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:53:57,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555683811] [2024-06-14 11:53:57,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:57,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:53:57,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:57,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:53:57,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:53:57,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:53:57,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 133 transitions, 1211 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:57,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:57,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:53:57,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:01,049 INFO L124 PetriNetUnfolderBase]: 16161/21809 cut-off events. [2024-06-14 11:54:01,049 INFO L125 PetriNetUnfolderBase]: For 141289/141303 co-relation queries the response was YES. [2024-06-14 11:54:01,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89231 conditions, 21809 events. 16161/21809 cut-off events. For 141289/141303 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 116070 event pairs, 7551 based on Foata normal form. 19/21802 useless extension candidates. Maximal degree in co-relation 89197. Up to 21042 conditions per place. [2024-06-14 11:54:01,188 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 89 selfloop transitions, 81 changer transitions 0/175 dead transitions. [2024-06-14 11:54:01,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 175 transitions, 1753 flow [2024-06-14 11:54:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-14 11:54:01,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-14 11:54:01,190 INFO L175 Difference]: Start difference. First operand has 90 places, 133 transitions, 1211 flow. Second operand 7 states and 172 transitions. [2024-06-14 11:54:01,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 175 transitions, 1753 flow [2024-06-14 11:54:01,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 175 transitions, 1622 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-14 11:54:01,317 INFO L231 Difference]: Finished difference. Result has 95 places, 133 transitions, 1256 flow [2024-06-14 11:54:01,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1256, PETRI_PLACES=95, PETRI_TRANSITIONS=133} [2024-06-14 11:54:01,318 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-06-14 11:54:01,324 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 133 transitions, 1256 flow [2024-06-14 11:54:01,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:01,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:01,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:01,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:54:01,325 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:54:01,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:01,326 INFO L85 PathProgramCache]: Analyzing trace with hash 703177645, now seen corresponding path program 1 times [2024-06-14 11:54:01,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:01,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080377515] [2024-06-14 11:54:01,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:01,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:03,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:03,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:03,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080377515] [2024-06-14 11:54:03,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080377515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:03,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:03,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:03,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432206488] [2024-06-14 11:54:03,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:03,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:03,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:03,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 11:54:03,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 133 transitions, 1256 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) [2024-06-14 11:54:03,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:03,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 11:54:03,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:06,805 INFO L124 PetriNetUnfolderBase]: 14157/19450 cut-off events. [2024-06-14 11:54:06,805 INFO L125 PetriNetUnfolderBase]: For 135531/135533 co-relation queries the response was YES. [2024-06-14 11:54:06,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80489 conditions, 19450 events. 14157/19450 cut-off events. For 135531/135533 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 106599 event pairs, 6671 based on Foata normal form. 6/19251 useless extension candidates. Maximal degree in co-relation 80452. Up to 19027 conditions per place. [2024-06-14 11:54:06,966 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 146 selfloop transitions, 17 changer transitions 0/169 dead transitions. [2024-06-14 11:54:06,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 169 transitions, 1720 flow [2024-06-14 11:54:06,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:06,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-14 11:54:06,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-14 11:54:06,968 INFO L175 Difference]: Start difference. First operand has 95 places, 133 transitions, 1256 flow. Second operand 7 states and 165 transitions. [2024-06-14 11:54:06,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 169 transitions, 1720 flow [2024-06-14 11:54:07,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 169 transitions, 1513 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:07,111 INFO L231 Difference]: Finished difference. Result has 95 places, 136 transitions, 1135 flow [2024-06-14 11:54:07,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1135, PETRI_PLACES=95, PETRI_TRANSITIONS=136} [2024-06-14 11:54:07,111 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-06-14 11:54:07,112 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 136 transitions, 1135 flow [2024-06-14 11:54:07,112 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) [2024-06-14 11:54:07,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:07,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:07,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:54:07,112 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:54:07,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:07,113 INFO L85 PathProgramCache]: Analyzing trace with hash -329440894, now seen corresponding path program 1 times [2024-06-14 11:54:07,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:07,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700405111] [2024-06-14 11:54:07,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:07,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:08,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:08,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700405111] [2024-06-14 11:54:08,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700405111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:08,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:08,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:54:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569191812] [2024-06-14 11:54:08,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:08,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:54:08,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:08,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:54:08,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:54:08,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 11:54:08,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 136 transitions, 1135 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) [2024-06-14 11:54:08,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:08,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 11:54:08,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:11,817 INFO L124 PetriNetUnfolderBase]: 14150/19529 cut-off events. [2024-06-14 11:54:11,818 INFO L125 PetriNetUnfolderBase]: For 152731/152733 co-relation queries the response was YES. [2024-06-14 11:54:11,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83053 conditions, 19529 events. 14150/19529 cut-off events. For 152731/152733 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 107397 event pairs, 6945 based on Foata normal form. 2/19348 useless extension candidates. Maximal degree in co-relation 83016. Up to 19084 conditions per place. [2024-06-14 11:54:11,917 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 138 selfloop transitions, 10 changer transitions 0/154 dead transitions. [2024-06-14 11:54:11,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 154 transitions, 1513 flow [2024-06-14 11:54:11,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:54:11,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:54:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-14 11:54:11,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-14 11:54:11,918 INFO L175 Difference]: Start difference. First operand has 95 places, 136 transitions, 1135 flow. Second operand 5 states and 116 transitions. [2024-06-14 11:54:11,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 154 transitions, 1513 flow [2024-06-14 11:54:12,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 154 transitions, 1453 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-14 11:54:12,029 INFO L231 Difference]: Finished difference. Result has 95 places, 140 transitions, 1150 flow [2024-06-14 11:54:12,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1150, PETRI_PLACES=95, PETRI_TRANSITIONS=140} [2024-06-14 11:54:12,030 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 38 predicate places. [2024-06-14 11:54:12,030 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 140 transitions, 1150 flow [2024-06-14 11:54:12,030 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) [2024-06-14 11:54:12,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:12,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:12,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:54:12,031 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:54:12,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2051490761, now seen corresponding path program 1 times [2024-06-14 11:54:12,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:12,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224368501] [2024-06-14 11:54:12,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:12,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:13,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:13,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224368501] [2024-06-14 11:54:13,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224368501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:13,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:13,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:13,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222388298] [2024-06-14 11:54:13,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:13,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:13,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:13,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:13,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:14,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:54:14,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 140 transitions, 1150 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:14,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:14,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:54:14,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:17,724 INFO L124 PetriNetUnfolderBase]: 16227/21951 cut-off events. [2024-06-14 11:54:17,724 INFO L125 PetriNetUnfolderBase]: For 208023/208043 co-relation queries the response was YES. [2024-06-14 11:54:17,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98412 conditions, 21951 events. 16227/21951 cut-off events. For 208023/208043 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 116745 event pairs, 7531 based on Foata normal form. 30/21972 useless extension candidates. Maximal degree in co-relation 98374. Up to 21088 conditions per place. [2024-06-14 11:54:17,888 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 104 selfloop transitions, 86 changer transitions 0/195 dead transitions. [2024-06-14 11:54:17,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 195 transitions, 1872 flow [2024-06-14 11:54:17,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-14 11:54:17,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2024-06-14 11:54:17,893 INFO L175 Difference]: Start difference. First operand has 95 places, 140 transitions, 1150 flow. Second operand 7 states and 178 transitions. [2024-06-14 11:54:17,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 195 transitions, 1872 flow [2024-06-14 11:54:18,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 195 transitions, 1827 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-14 11:54:18,035 INFO L231 Difference]: Finished difference. Result has 99 places, 148 transitions, 1404 flow [2024-06-14 11:54:18,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1404, PETRI_PLACES=99, PETRI_TRANSITIONS=148} [2024-06-14 11:54:18,036 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 42 predicate places. [2024-06-14 11:54:18,036 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 148 transitions, 1404 flow [2024-06-14 11:54:18,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:18,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:18,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:18,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:54:18,039 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:54:18,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:18,039 INFO L85 PathProgramCache]: Analyzing trace with hash 116741063, now seen corresponding path program 2 times [2024-06-14 11:54:18,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:18,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099618673] [2024-06-14 11:54:18,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:18,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:19,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:19,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099618673] [2024-06-14 11:54:19,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099618673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:19,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:19,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:19,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089783046] [2024-06-14 11:54:19,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:19,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:19,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:19,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:19,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:20,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:54:20,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 148 transitions, 1404 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:20,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:20,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:54:20,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:24,003 INFO L124 PetriNetUnfolderBase]: 16303/22055 cut-off events. [2024-06-14 11:54:24,004 INFO L125 PetriNetUnfolderBase]: For 233695/233717 co-relation queries the response was YES. [2024-06-14 11:54:24,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101575 conditions, 22055 events. 16303/22055 cut-off events. For 233695/233717 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 117331 event pairs, 7503 based on Foata normal form. 30/22076 useless extension candidates. Maximal degree in co-relation 101536. Up to 21155 conditions per place. [2024-06-14 11:54:24,124 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 105 selfloop transitions, 90 changer transitions 0/200 dead transitions. [2024-06-14 11:54:24,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 200 transitions, 2146 flow [2024-06-14 11:54:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:24,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-14 11:54:24,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-14 11:54:24,127 INFO L175 Difference]: Start difference. First operand has 99 places, 148 transitions, 1404 flow. Second operand 7 states and 174 transitions. [2024-06-14 11:54:24,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 200 transitions, 2146 flow [2024-06-14 11:54:24,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 200 transitions, 1842 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:24,288 INFO L231 Difference]: Finished difference. Result has 100 places, 156 transitions, 1425 flow [2024-06-14 11:54:24,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1425, PETRI_PLACES=100, PETRI_TRANSITIONS=156} [2024-06-14 11:54:24,288 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 43 predicate places. [2024-06-14 11:54:24,289 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 156 transitions, 1425 flow [2024-06-14 11:54:24,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:24,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:24,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:24,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:54:24,289 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:54:24,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:24,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2038170333, now seen corresponding path program 3 times [2024-06-14 11:54:24,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:24,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670033824] [2024-06-14 11:54:24,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:24,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:26,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:26,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670033824] [2024-06-14 11:54:26,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670033824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:26,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:26,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:26,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319774024] [2024-06-14 11:54:26,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:26,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:26,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:26,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:26,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:26,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:54:26,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 156 transitions, 1425 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:26,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:26,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:54:26,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:30,135 INFO L124 PetriNetUnfolderBase]: 16271/22017 cut-off events. [2024-06-14 11:54:30,135 INFO L125 PetriNetUnfolderBase]: For 253838/253890 co-relation queries the response was YES. [2024-06-14 11:54:30,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102615 conditions, 22017 events. 16271/22017 cut-off events. For 253838/253890 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 117159 event pairs, 7527 based on Foata normal form. 43/22032 useless extension candidates. Maximal degree in co-relation 102576. Up to 21128 conditions per place. [2024-06-14 11:54:30,304 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 102 selfloop transitions, 87 changer transitions 0/194 dead transitions. [2024-06-14 11:54:30,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 194 transitions, 1935 flow [2024-06-14 11:54:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:30,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-14 11:54:30,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-14 11:54:30,313 INFO L175 Difference]: Start difference. First operand has 100 places, 156 transitions, 1425 flow. Second operand 7 states and 166 transitions. [2024-06-14 11:54:30,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 194 transitions, 1935 flow [2024-06-14 11:54:30,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 194 transitions, 1726 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:30,532 INFO L231 Difference]: Finished difference. Result has 103 places, 156 transitions, 1405 flow [2024-06-14 11:54:30,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1405, PETRI_PLACES=103, PETRI_TRANSITIONS=156} [2024-06-14 11:54:30,533 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2024-06-14 11:54:30,533 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 156 transitions, 1405 flow [2024-06-14 11:54:30,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:30,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:30,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:30,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:54:30,534 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:54:30,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:30,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1622731904, now seen corresponding path program 1 times [2024-06-14 11:54:30,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:30,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577086829] [2024-06-14 11:54:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:30,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:32,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:32,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:32,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577086829] [2024-06-14 11:54:32,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577086829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:32,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:32,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:54:32,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201562357] [2024-06-14 11:54:32,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:32,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:54:32,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:32,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:54:32,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:54:33,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 54 [2024-06-14 11:54:33,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 156 transitions, 1405 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:33,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:33,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 54 [2024-06-14 11:54:33,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:36,223 INFO L124 PetriNetUnfolderBase]: 14268/19992 cut-off events. [2024-06-14 11:54:36,224 INFO L125 PetriNetUnfolderBase]: For 239241/239243 co-relation queries the response was YES. [2024-06-14 11:54:36,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93017 conditions, 19992 events. 14268/19992 cut-off events. For 239241/239243 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 112962 event pairs, 6959 based on Foata normal form. 4/19974 useless extension candidates. Maximal degree in co-relation 92977. Up to 19228 conditions per place. [2024-06-14 11:54:36,354 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 159 selfloop transitions, 14 changer transitions 0/179 dead transitions. [2024-06-14 11:54:36,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 179 transitions, 1853 flow [2024-06-14 11:54:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:54:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:54:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-14 11:54:36,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-14 11:54:36,356 INFO L175 Difference]: Start difference. First operand has 103 places, 156 transitions, 1405 flow. Second operand 6 states and 136 transitions. [2024-06-14 11:54:36,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 179 transitions, 1853 flow [2024-06-14 11:54:36,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 179 transitions, 1599 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:36,608 INFO L231 Difference]: Finished difference. Result has 102 places, 160 transitions, 1240 flow [2024-06-14 11:54:36,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1240, PETRI_PLACES=102, PETRI_TRANSITIONS=160} [2024-06-14 11:54:36,609 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 45 predicate places. [2024-06-14 11:54:36,610 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 160 transitions, 1240 flow [2024-06-14 11:54:36,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:36,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:36,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:36,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:54:36,610 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:54:36,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:36,611 INFO L85 PathProgramCache]: Analyzing trace with hash 595535480, now seen corresponding path program 1 times [2024-06-14 11:54:36,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:36,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943529506] [2024-06-14 11:54:36,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:36,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:38,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:38,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943529506] [2024-06-14 11:54:38,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943529506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:38,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:38,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:38,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384102102] [2024-06-14 11:54:38,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:38,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:38,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:38,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:38,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:38,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:54:38,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 160 transitions, 1240 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:38,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:38,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:54:38,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:42,260 INFO L124 PetriNetUnfolderBase]: 16293/22040 cut-off events. [2024-06-14 11:54:42,260 INFO L125 PetriNetUnfolderBase]: For 309476/309496 co-relation queries the response was YES. [2024-06-14 11:54:42,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108022 conditions, 22040 events. 16293/22040 cut-off events. For 309476/309496 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 117479 event pairs, 6569 based on Foata normal form. 22/22057 useless extension candidates. Maximal degree in co-relation 107981. Up to 21524 conditions per place. [2024-06-14 11:54:42,645 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 155 selfloop transitions, 46 changer transitions 0/206 dead transitions. [2024-06-14 11:54:42,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 206 transitions, 1950 flow [2024-06-14 11:54:42,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:42,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-14 11:54:42,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 11:54:42,647 INFO L175 Difference]: Start difference. First operand has 102 places, 160 transitions, 1240 flow. Second operand 7 states and 168 transitions. [2024-06-14 11:54:42,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 206 transitions, 1950 flow [2024-06-14 11:54:42,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 206 transitions, 1891 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-14 11:54:42,845 INFO L231 Difference]: Finished difference. Result has 105 places, 166 transitions, 1373 flow [2024-06-14 11:54:42,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1373, PETRI_PLACES=105, PETRI_TRANSITIONS=166} [2024-06-14 11:54:42,846 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 48 predicate places. [2024-06-14 11:54:42,846 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 166 transitions, 1373 flow [2024-06-14 11:54:42,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:42,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:42,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:42,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:54:42,847 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:54:42,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:42,847 INFO L85 PathProgramCache]: Analyzing trace with hash 713000692, now seen corresponding path program 2 times [2024-06-14 11:54:42,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:42,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632768205] [2024-06-14 11:54:42,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:42,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:44,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:44,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632768205] [2024-06-14 11:54:44,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632768205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:44,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:44,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:54:44,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906872516] [2024-06-14 11:54:44,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:44,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:54:44,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:44,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:54:44,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:54:44,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:54:44,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 166 transitions, 1373 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:44,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:44,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:54:44,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:48,704 INFO L124 PetriNetUnfolderBase]: 16278/22018 cut-off events. [2024-06-14 11:54:48,704 INFO L125 PetriNetUnfolderBase]: For 347555/347567 co-relation queries the response was YES. [2024-06-14 11:54:48,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111727 conditions, 22018 events. 16278/22018 cut-off events. For 347555/347567 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 117472 event pairs, 7626 based on Foata normal form. 14/22027 useless extension candidates. Maximal degree in co-relation 111685. Up to 21639 conditions per place. [2024-06-14 11:54:48,839 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 154 selfloop transitions, 45 changer transitions 0/204 dead transitions. [2024-06-14 11:54:48,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 204 transitions, 1901 flow [2024-06-14 11:54:48,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:54:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:54:48,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-14 11:54:48,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-14 11:54:48,841 INFO L175 Difference]: Start difference. First operand has 105 places, 166 transitions, 1373 flow. Second operand 7 states and 165 transitions. [2024-06-14 11:54:48,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 204 transitions, 1901 flow [2024-06-14 11:54:49,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 204 transitions, 1796 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-14 11:54:49,094 INFO L231 Difference]: Finished difference. Result has 109 places, 166 transitions, 1370 flow [2024-06-14 11:54:49,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1370, PETRI_PLACES=109, PETRI_TRANSITIONS=166} [2024-06-14 11:54:49,094 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 52 predicate places. [2024-06-14 11:54:49,095 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 166 transitions, 1370 flow [2024-06-14 11:54:49,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:49,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:49,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:49,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:54:49,095 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:54:49,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:49,096 INFO L85 PathProgramCache]: Analyzing trace with hash 600306938, now seen corresponding path program 1 times [2024-06-14 11:54:49,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:49,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678800445] [2024-06-14 11:54:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:49,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:52,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:52,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678800445] [2024-06-14 11:54:52,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678800445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:52,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:52,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:54:52,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111353272] [2024-06-14 11:54:52,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:52,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:54:52,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:52,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:54:52,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:54:52,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:54:52,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 166 transitions, 1370 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-14 11:54:52,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:52,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:54:52,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:56,213 INFO L124 PetriNetUnfolderBase]: 16478/22311 cut-off events. [2024-06-14 11:54:56,213 INFO L125 PetriNetUnfolderBase]: For 389203/389215 co-relation queries the response was YES. [2024-06-14 11:54:56,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114992 conditions, 22311 events. 16478/22311 cut-off events. For 389203/389215 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 119322 event pairs, 7022 based on Foata normal form. 44/22346 useless extension candidates. Maximal degree in co-relation 114948. Up to 21153 conditions per place. [2024-06-14 11:54:56,399 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 120 selfloop transitions, 96 changer transitions 0/221 dead transitions. [2024-06-14 11:54:56,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 221 transitions, 2024 flow [2024-06-14 11:54:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:54:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:54:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-14 11:54:56,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-14 11:54:56,401 INFO L175 Difference]: Start difference. First operand has 109 places, 166 transitions, 1370 flow. Second operand 8 states and 196 transitions. [2024-06-14 11:54:56,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 221 transitions, 2024 flow [2024-06-14 11:54:56,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 221 transitions, 1922 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 11:54:56,714 INFO L231 Difference]: Finished difference. Result has 111 places, 169 transitions, 1529 flow [2024-06-14 11:54:56,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1529, PETRI_PLACES=111, PETRI_TRANSITIONS=169} [2024-06-14 11:54:56,714 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 54 predicate places. [2024-06-14 11:54:56,714 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 169 transitions, 1529 flow [2024-06-14 11:54:56,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-14 11:54:56,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:56,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:56,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:54:56,715 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:54:56,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:56,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1223478049, now seen corresponding path program 1 times [2024-06-14 11:54:56,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:56,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364246318] [2024-06-14 11:54:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:58,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:58,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364246318] [2024-06-14 11:54:58,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364246318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:58,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:58,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:54:58,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496244909] [2024-06-14 11:54:58,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:58,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:54:58,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:58,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:54:58,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:54:58,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:54:58,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 169 transitions, 1529 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:58,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:58,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:54:58,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:02,464 INFO L124 PetriNetUnfolderBase]: 16494/22347 cut-off events. [2024-06-14 11:55:02,465 INFO L125 PetriNetUnfolderBase]: For 425873/425881 co-relation queries the response was YES. [2024-06-14 11:55:02,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119627 conditions, 22347 events. 16494/22347 cut-off events. For 425873/425881 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 119497 event pairs, 7586 based on Foata normal form. 10/22354 useless extension candidates. Maximal degree in co-relation 119582. Up to 22179 conditions per place. [2024-06-14 11:55:02,607 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 177 selfloop transitions, 17 changer transitions 0/199 dead transitions. [2024-06-14 11:55:02,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 199 transitions, 2059 flow [2024-06-14 11:55:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:55:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:55:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-14 11:55:02,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-14 11:55:02,609 INFO L175 Difference]: Start difference. First operand has 111 places, 169 transitions, 1529 flow. Second operand 6 states and 136 transitions. [2024-06-14 11:55:02,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 199 transitions, 2059 flow [2024-06-14 11:55:03,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 199 transitions, 1846 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:03,035 INFO L231 Difference]: Finished difference. Result has 111 places, 173 transitions, 1420 flow [2024-06-14 11:55:03,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1420, PETRI_PLACES=111, PETRI_TRANSITIONS=173} [2024-06-14 11:55:03,035 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 54 predicate places. [2024-06-14 11:55:03,035 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 173 transitions, 1420 flow [2024-06-14 11:55:03,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:03,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:03,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:03,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:55:03,036 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:55:03,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:03,036 INFO L85 PathProgramCache]: Analyzing trace with hash -974994182, now seen corresponding path program 2 times [2024-06-14 11:55:03,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:03,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775167681] [2024-06-14 11:55:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:03,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:05,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:05,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775167681] [2024-06-14 11:55:05,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775167681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:05,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:05,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:55:05,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374954690] [2024-06-14 11:55:05,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:05,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:55:05,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:05,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:55:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:55:05,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:55:05,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 173 transitions, 1420 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-14 11:55:05,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:05,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:55:05,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:10,249 INFO L124 PetriNetUnfolderBase]: 16530/22367 cut-off events. [2024-06-14 11:55:10,249 INFO L125 PetriNetUnfolderBase]: For 467943/467951 co-relation queries the response was YES. [2024-06-14 11:55:10,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123462 conditions, 22367 events. 16530/22367 cut-off events. For 467943/467951 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 119526 event pairs, 7043 based on Foata normal form. 9/22335 useless extension candidates. Maximal degree in co-relation 123416. Up to 21474 conditions per place. [2024-06-14 11:55:10,415 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 120 selfloop transitions, 98 changer transitions 0/223 dead transitions. [2024-06-14 11:55:10,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 223 transitions, 2072 flow [2024-06-14 11:55:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:55:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:55:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-14 11:55:10,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44212962962962965 [2024-06-14 11:55:10,417 INFO L175 Difference]: Start difference. First operand has 111 places, 173 transitions, 1420 flow. Second operand 8 states and 191 transitions. [2024-06-14 11:55:10,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 223 transitions, 2072 flow [2024-06-14 11:55:10,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 223 transitions, 2000 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-14 11:55:10,854 INFO L231 Difference]: Finished difference. Result has 115 places, 176 transitions, 1619 flow [2024-06-14 11:55:10,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1619, PETRI_PLACES=115, PETRI_TRANSITIONS=176} [2024-06-14 11:55:10,855 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 58 predicate places. [2024-06-14 11:55:10,855 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 176 transitions, 1619 flow [2024-06-14 11:55:10,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-14 11:55:10,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:10,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:10,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:55:10,855 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:55:10,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash -746862392, now seen corresponding path program 3 times [2024-06-14 11:55:10,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:10,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874014547] [2024-06-14 11:55:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:13,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:13,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874014547] [2024-06-14 11:55:13,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874014547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:13,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:13,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:55:13,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986148248] [2024-06-14 11:55:13,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:13,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:55:13,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:13,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:55:13,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:55:13,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:55:13,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 176 transitions, 1619 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-14 11:55:13,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:13,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:55:13,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:17,813 INFO L124 PetriNetUnfolderBase]: 16566/22411 cut-off events. [2024-06-14 11:55:17,814 INFO L125 PetriNetUnfolderBase]: For 518750/518762 co-relation queries the response was YES. [2024-06-14 11:55:17,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128474 conditions, 22411 events. 16566/22411 cut-off events. For 518750/518762 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 119392 event pairs, 7027 based on Foata normal form. 13/22383 useless extension candidates. Maximal degree in co-relation 128427. Up to 21526 conditions per place. [2024-06-14 11:55:17,956 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 121 selfloop transitions, 100 changer transitions 0/226 dead transitions. [2024-06-14 11:55:17,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 226 transitions, 2285 flow [2024-06-14 11:55:17,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:55:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:55:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-14 11:55:17,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398148148148148 [2024-06-14 11:55:17,958 INFO L175 Difference]: Start difference. First operand has 115 places, 176 transitions, 1619 flow. Second operand 8 states and 190 transitions. [2024-06-14 11:55:17,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 226 transitions, 2285 flow [2024-06-14 11:55:18,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 226 transitions, 2042 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:18,419 INFO L231 Difference]: Finished difference. Result has 117 places, 179 transitions, 1657 flow [2024-06-14 11:55:18,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1657, PETRI_PLACES=117, PETRI_TRANSITIONS=179} [2024-06-14 11:55:18,419 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 60 predicate places. [2024-06-14 11:55:18,419 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 179 transitions, 1657 flow [2024-06-14 11:55:18,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-14 11:55:18,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:18,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:18,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:55:18,420 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:55:18,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:18,420 INFO L85 PathProgramCache]: Analyzing trace with hash 772441192, now seen corresponding path program 4 times [2024-06-14 11:55:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:18,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623490636] [2024-06-14 11:55:18,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:18,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:20,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:20,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623490636] [2024-06-14 11:55:20,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623490636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:20,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:20,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:55:20,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955968535] [2024-06-14 11:55:20,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:20,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:55:20,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:20,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:55:20,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:55:21,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:55:21,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 179 transitions, 1657 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-14 11:55:21,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:21,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:55:21,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:25,185 INFO L124 PetriNetUnfolderBase]: 16551/22390 cut-off events. [2024-06-14 11:55:25,186 INFO L125 PetriNetUnfolderBase]: For 567322/567334 co-relation queries the response was YES. [2024-06-14 11:55:25,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131928 conditions, 22390 events. 16551/22390 cut-off events. For 567322/567334 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 119246 event pairs, 6526 based on Foata normal form. 13/22362 useless extension candidates. Maximal degree in co-relation 131880. Up to 21117 conditions per place. [2024-06-14 11:55:25,340 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 116 selfloop transitions, 111 changer transitions 0/232 dead transitions. [2024-06-14 11:55:25,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 232 transitions, 2349 flow [2024-06-14 11:55:25,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:55:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:55:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-14 11:55:25,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44907407407407407 [2024-06-14 11:55:25,342 INFO L175 Difference]: Start difference. First operand has 117 places, 179 transitions, 1657 flow. Second operand 8 states and 194 transitions. [2024-06-14 11:55:25,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 232 transitions, 2349 flow [2024-06-14 11:55:25,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 232 transitions, 2096 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-14 11:55:25,899 INFO L231 Difference]: Finished difference. Result has 119 places, 182 transitions, 1712 flow [2024-06-14 11:55:25,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1712, PETRI_PLACES=119, PETRI_TRANSITIONS=182} [2024-06-14 11:55:25,900 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 62 predicate places. [2024-06-14 11:55:25,900 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 182 transitions, 1712 flow [2024-06-14 11:55:25,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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) [2024-06-14 11:55:25,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:25,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:25,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 11:55:25,901 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 11:55:25,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:25,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1223806339, now seen corresponding path program 2 times [2024-06-14 11:55:25,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:25,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929175208] [2024-06-14 11:55:25,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:25,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:27,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:27,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929175208] [2024-06-14 11:55:27,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929175208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:27,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:27,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:55:27,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108876541] [2024-06-14 11:55:27,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:27,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:55:27,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:55:27,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:55:27,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-06-14 11:55:27,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 182 transitions, 1712 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:27,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:27,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-06-14 11:55:27,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand