./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix006_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix006_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix006_tso.oepc.i ./goblint.2024-05-07_14-17-48.files/protection/mix006_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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:04:15,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:04:15,389 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:04:15,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:04:15,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:04:15,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:04:15,421 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:04:15,421 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:04:15,421 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:04:15,424 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:04:15,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:04:15,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:04:15,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:04:15,427 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:04:15,427 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:04:15,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:04:15,427 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:04:15,427 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:04:15,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:04:15,428 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:04:15,428 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:04:15,428 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:04:15,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:04:15,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:04:15,429 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:04:15,429 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:04:15,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:04:15,430 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:04:15,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:04:15,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:04:15,431 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:04:15,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:04:15,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:04:15,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:04:15,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:04:15,432 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:04:15,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:04:15,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:04:15,433 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:04:15,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:04:15,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:04:15,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:04:15,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:04:15,433 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:04:15,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:04:15,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:04:15,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:04:15,639 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:04:15,639 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:04:15,640 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix006_tso.oepc.i [2024-05-12 13:04:16,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:04:16,966 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:04:16,967 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix006_tso.oepc.i [2024-05-12 13:04:16,992 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48d9e2fe9/cd78f1093c0a46b4b23f8ea6d8a8a663/FLAG4f6d48a7c [2024-05-12 13:04:17,002 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48d9e2fe9/cd78f1093c0a46b4b23f8ea6d8a8a663 [2024-05-12 13:04:17,014 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:04:17,014 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:04:17,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix006_tso.oepc.yml/witness.yml [2024-05-12 13:04:17,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:04:17,185 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:04:17,186 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:04:17,186 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:04:17,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:04:17,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:04:17" (1/2) ... [2024-05-12 13:04:17,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b0793d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:17, skipping insertion in model container [2024-05-12 13:04:17,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:04:17" (1/2) ... [2024-05-12 13:04:17,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52050c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:04:17, skipping insertion in model container [2024-05-12 13:04:17,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:04:17" (2/2) ... [2024-05-12 13:04:17,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b0793d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17, skipping insertion in model container [2024-05-12 13:04:17,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:04:17" (2/2) ... [2024-05-12 13:04:17,195 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:04:17,362 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:04:17,364 INFO L97 edCorrectnessWitness]: Location invariant before [L902-L902] (((((((((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-05-12 13:04:17,364 INFO L97 edCorrectnessWitness]: Location invariant before [L904-L904] (((((((((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-05-12 13:04:17,364 INFO L97 edCorrectnessWitness]: Location invariant before [L905-L905] (((((((((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-05-12 13:04:17,364 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:04:17,365 INFO L106 edCorrectnessWitness]: ghost_update [L900-L900] multithreaded = 1; [2024-05-12 13:04:17,410 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:04:17,557 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix006_tso.oepc.i[949,962] [2024-05-12 13:04:17,795 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:04:17,810 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:04:17,840 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix006_tso.oepc.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:04:17,956 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:04:17,989 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:04:17,990 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17 WrapperNode [2024-05-12 13:04:17,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:04:17,991 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:04:17,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:04:17,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:04:17,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (1/1) ... [2024-05-12 13:04:18,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (1/1) ... [2024-05-12 13:04:18,075 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 269 [2024-05-12 13:04:18,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:04:18,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:04:18,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:04:18,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:04:18,085 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (1/1) ... [2024-05-12 13:04:18,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (1/1) ... [2024-05-12 13:04:18,094 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (1/1) ... [2024-05-12 13:04:18,127 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 13:04:18,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (1/1) ... [2024-05-12 13:04:18,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (1/1) ... [2024-05-12 13:04:18,139 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (1/1) ... [2024-05-12 13:04:18,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (1/1) ... [2024-05-12 13:04:18,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (1/1) ... [2024-05-12 13:04:18,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (1/1) ... [2024-05-12 13:04:18,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:04:18,149 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:04:18,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:04:18,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:04:18,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (1/1) ... [2024-05-12 13:04:18,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:04:18,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:04:18,176 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) [2024-05-12 13:04:18,194 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 [2024-05-12 13:04:18,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:04:18,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:04:18,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:04:18,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:04:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:04:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:04:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:04:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:04:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:04:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:04:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:04:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:04:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:04:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:04:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:04:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:04:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:04:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:04:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:04:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:04:18,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:04:18,226 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:04:18,374 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:04:18,377 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:04:18,811 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:04:18,811 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:04:19,023 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:04:19,024 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:04:19,024 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:04:19 BoogieIcfgContainer [2024-05-12 13:04:19,025 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:04:19,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:04:19,027 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:04:19,030 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:04:19,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:04:17" (1/4) ... [2024-05-12 13:04:19,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693b5fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:04:19, skipping insertion in model container [2024-05-12 13:04:19,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:04:17" (2/4) ... [2024-05-12 13:04:19,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693b5fa4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:04:19, skipping insertion in model container [2024-05-12 13:04:19,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:04:17" (3/4) ... [2024-05-12 13:04:19,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693b5fa4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:04:19, skipping insertion in model container [2024-05-12 13:04:19,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:04:19" (4/4) ... [2024-05-12 13:04:19,033 INFO L112 eAbstractionObserver]: Analyzing ICFG mix006_tso.oepc.i [2024-05-12 13:04:19,047 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:04:19,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-05-12 13:04:19,048 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:04:19,099 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:04:19,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 112 flow [2024-05-12 13:04:19,161 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-05-12 13:04:19,162 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:04:19,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-05-12 13:04:19,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 112 flow [2024-05-12 13:04:19,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 103 flow [2024-05-12 13:04:19,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:04:19,236 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;@5f7b2f01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:04:19,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-05-12 13:04:19,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:04:19,264 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-05-12 13:04:19,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:04:19,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:19,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:04:19,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:19,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:19,269 INFO L85 PathProgramCache]: Analyzing trace with hash -848850239, now seen corresponding path program 1 times [2024-05-12 13:04:19,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:19,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512514755] [2024-05-12 13:04:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:19,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:21,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:21,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512514755] [2024-05-12 13:04:21,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512514755] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:21,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:21,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:04:21,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736315016] [2024-05-12 13:04:21,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:21,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:04:21,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:04:21,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:04:21,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-05-12 13:04:21,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 103 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) [2024-05-12 13:04:21,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:21,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-05-12 13:04:21,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:22,629 INFO L124 PetriNetUnfolderBase]: 6900/10925 cut-off events. [2024-05-12 13:04:22,629 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-05-12 13:04:22,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20844 conditions, 10925 events. 6900/10925 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 72711 event pairs, 5820 based on Foata normal form. 337/10074 useless extension candidates. Maximal degree in co-relation 20829. Up to 9789 conditions per place. [2024-05-12 13:04:22,677 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 48 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2024-05-12 13:04:22,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 249 flow [2024-05-12 13:04:22,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:04:22,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:04:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-05-12 13:04:22,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-05-12 13:04:22,687 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 103 flow. Second operand 3 states and 95 transitions. [2024-05-12 13:04:22,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 249 flow [2024-05-12 13:04:22,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 13:04:22,691 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 142 flow [2024-05-12 13:04:22,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-05-12 13:04:22,695 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-05-12 13:04:22,695 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 142 flow [2024-05-12 13:04:22,695 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) [2024-05-12 13:04:22,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:22,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:22,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:04:22,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:22,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:22,697 INFO L85 PathProgramCache]: Analyzing trace with hash 298761888, now seen corresponding path program 1 times [2024-05-12 13:04:22,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:22,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202875404] [2024-05-12 13:04:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:22,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:24,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:24,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202875404] [2024-05-12 13:04:24,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202875404] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:24,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:24,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:04:24,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926755608] [2024-05-12 13:04:24,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:24,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:04:24,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:04:24,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:04:24,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2024-05-12 13:04:24,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 142 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) [2024-05-12 13:04:24,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:24,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2024-05-12 13:04:24,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:25,869 INFO L124 PetriNetUnfolderBase]: 7883/11368 cut-off events. [2024-05-12 13:04:25,869 INFO L125 PetriNetUnfolderBase]: For 1372/1372 co-relation queries the response was YES. [2024-05-12 13:04:25,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25247 conditions, 11368 events. 7883/11368 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 66579 event pairs, 4436 based on Foata normal form. 3/10516 useless extension candidates. Maximal degree in co-relation 25232. Up to 11128 conditions per place. [2024-05-12 13:04:25,934 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 61 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2024-05-12 13:04:25,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 80 transitions, 360 flow [2024-05-12 13:04:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:04:25,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:04:25,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-05-12 13:04:25,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.595 [2024-05-12 13:04:25,937 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 142 flow. Second operand 4 states and 119 transitions. [2024-05-12 13:04:25,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 80 transitions, 360 flow [2024-05-12 13:04:25,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:04:25,939 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 198 flow [2024-05-12 13:04:25,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-05-12 13:04:25,940 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-05-12 13:04:25,941 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 198 flow [2024-05-12 13:04:25,941 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) [2024-05-12 13:04:25,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:25,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:25,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:04:25,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:25,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash 671685726, now seen corresponding path program 1 times [2024-05-12 13:04:25,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:25,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917595208] [2024-05-12 13:04:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:25,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:27,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:27,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917595208] [2024-05-12 13:04:27,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917595208] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:27,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:27,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:04:27,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147465386] [2024-05-12 13:04:27,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:27,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:04:27,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:04:27,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:04:27,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2024-05-12 13:04:27,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 198 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) [2024-05-12 13:04:27,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:27,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2024-05-12 13:04:27,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:29,340 INFO L124 PetriNetUnfolderBase]: 7865/12301 cut-off events. [2024-05-12 13:04:29,340 INFO L125 PetriNetUnfolderBase]: For 3804/3804 co-relation queries the response was YES. [2024-05-12 13:04:29,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28684 conditions, 12301 events. 7865/12301 cut-off events. For 3804/3804 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 81203 event pairs, 3922 based on Foata normal form. 6/11139 useless extension candidates. Maximal degree in co-relation 28667. Up to 11075 conditions per place. [2024-05-12 13:04:29,391 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 75 selfloop transitions, 19 changer transitions 0/102 dead transitions. [2024-05-12 13:04:29,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 102 transitions, 550 flow [2024-05-12 13:04:29,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:04:29,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:04:29,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-05-12 13:04:29,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.568 [2024-05-12 13:04:29,394 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 198 flow. Second operand 5 states and 142 transitions. [2024-05-12 13:04:29,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 102 transitions, 550 flow [2024-05-12 13:04:29,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 102 transitions, 504 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 13:04:29,401 INFO L231 Difference]: Finished difference. Result has 64 places, 74 transitions, 345 flow [2024-05-12 13:04:29,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=64, PETRI_TRANSITIONS=74} [2024-05-12 13:04:29,402 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-05-12 13:04:29,402 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 74 transitions, 345 flow [2024-05-12 13:04:29,403 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) [2024-05-12 13:04:29,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:29,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:29,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:04:29,404 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:29,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash 670578824, now seen corresponding path program 1 times [2024-05-12 13:04:29,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:29,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135305595] [2024-05-12 13:04:29,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:29,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:29,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:29,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135305595] [2024-05-12 13:04:29,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135305595] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:29,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:29,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:04:29,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049126074] [2024-05-12 13:04:29,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:29,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:04:29,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:29,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:04:29,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:04:29,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-05-12 13:04:29,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 74 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:29,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:29,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-05-12 13:04:29,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:30,138 INFO L124 PetriNetUnfolderBase]: 3284/6043 cut-off events. [2024-05-12 13:04:30,138 INFO L125 PetriNetUnfolderBase]: For 3284/3474 co-relation queries the response was YES. [2024-05-12 13:04:30,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14250 conditions, 6043 events. 3284/6043 cut-off events. For 3284/3474 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 46080 event pairs, 2028 based on Foata normal form. 32/5512 useless extension candidates. Maximal degree in co-relation 14230. Up to 4290 conditions per place. [2024-05-12 13:04:30,175 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 55 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-05-12 13:04:30,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 474 flow [2024-05-12 13:04:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:04:30,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:04:30,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-05-12 13:04:30,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-05-12 13:04:30,178 INFO L175 Difference]: Start difference. First operand has 64 places, 74 transitions, 345 flow. Second operand 3 states and 105 transitions. [2024-05-12 13:04:30,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 474 flow [2024-05-12 13:04:30,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 84 transitions, 462 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-05-12 13:04:30,185 INFO L231 Difference]: Finished difference. Result has 65 places, 68 transitions, 304 flow [2024-05-12 13:04:30,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=65, PETRI_TRANSITIONS=68} [2024-05-12 13:04:30,187 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-05-12 13:04:30,187 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 68 transitions, 304 flow [2024-05-12 13:04:30,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:30,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:30,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:30,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:04:30,188 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:30,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:30,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1559618777, now seen corresponding path program 1 times [2024-05-12 13:04:30,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:30,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531422495] [2024-05-12 13:04:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:30,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:33,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:33,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531422495] [2024-05-12 13:04:33,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531422495] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:33,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:33,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:04:33,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728017542] [2024-05-12 13:04:33,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:33,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:04:33,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:33,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:04:33,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:04:33,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2024-05-12 13:04:33,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:33,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:33,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2024-05-12 13:04:33,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:34,563 INFO L124 PetriNetUnfolderBase]: 6826/10704 cut-off events. [2024-05-12 13:04:34,563 INFO L125 PetriNetUnfolderBase]: For 8254/8254 co-relation queries the response was YES. [2024-05-12 13:04:34,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26959 conditions, 10704 events. 6826/10704 cut-off events. For 8254/8254 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 68961 event pairs, 2954 based on Foata normal form. 6/10041 useless extension candidates. Maximal degree in co-relation 26937. Up to 9584 conditions per place. [2024-05-12 13:04:34,622 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 78 selfloop transitions, 20 changer transitions 0/106 dead transitions. [2024-05-12 13:04:34,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 106 transitions, 606 flow [2024-05-12 13:04:34,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:04:34,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:04:34,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-05-12 13:04:34,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-05-12 13:04:34,630 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 304 flow. Second operand 6 states and 159 transitions. [2024-05-12 13:04:34,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 106 transitions, 606 flow [2024-05-12 13:04:34,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 106 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:04:34,637 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 367 flow [2024-05-12 13:04:34,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=367, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2024-05-12 13:04:34,639 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-05-12 13:04:34,639 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 367 flow [2024-05-12 13:04:34,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:34,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:34,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:34,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:04:34,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:34,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:34,641 INFO L85 PathProgramCache]: Analyzing trace with hash 180219277, now seen corresponding path program 1 times [2024-05-12 13:04:34,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:34,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940293396] [2024-05-12 13:04:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:34,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:36,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:36,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940293396] [2024-05-12 13:04:36,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940293396] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:36,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:36,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:04:36,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402638282] [2024-05-12 13:04:36,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:36,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:04:36,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:36,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:04:36,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:04:36,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2024-05-12 13:04:36,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 367 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) [2024-05-12 13:04:36,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:36,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2024-05-12 13:04:36,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:37,642 INFO L124 PetriNetUnfolderBase]: 6722/10582 cut-off events. [2024-05-12 13:04:37,642 INFO L125 PetriNetUnfolderBase]: For 10034/10034 co-relation queries the response was YES. [2024-05-12 13:04:37,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28168 conditions, 10582 events. 6722/10582 cut-off events. For 10034/10034 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 67960 event pairs, 3867 based on Foata normal form. 2/9877 useless extension candidates. Maximal degree in co-relation 28145. Up to 9518 conditions per place. [2024-05-12 13:04:37,701 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 80 selfloop transitions, 11 changer transitions 0/99 dead transitions. [2024-05-12 13:04:37,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 99 transitions, 664 flow [2024-05-12 13:04:37,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:04:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:04:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-05-12 13:04:37,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484 [2024-05-12 13:04:37,703 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 367 flow. Second operand 5 states and 121 transitions. [2024-05-12 13:04:37,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 99 transitions, 664 flow [2024-05-12 13:04:37,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 601 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 13:04:37,711 INFO L231 Difference]: Finished difference. Result has 70 places, 80 transitions, 426 flow [2024-05-12 13:04:37,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=70, PETRI_TRANSITIONS=80} [2024-05-12 13:04:37,714 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-05-12 13:04:37,714 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 80 transitions, 426 flow [2024-05-12 13:04:37,714 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) [2024-05-12 13:04:37,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:37,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:37,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:04:37,715 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:37,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:37,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1320431028, now seen corresponding path program 1 times [2024-05-12 13:04:37,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:37,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822312926] [2024-05-12 13:04:37,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:37,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:39,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:39,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822312926] [2024-05-12 13:04:39,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822312926] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:39,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:39,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:04:39,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712362526] [2024-05-12 13:04:39,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:39,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:04:39,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:04:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:04:39,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2024-05-12 13:04:39,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 426 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) [2024-05-12 13:04:39,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:39,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2024-05-12 13:04:39,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:41,248 INFO L124 PetriNetUnfolderBase]: 6749/10618 cut-off events. [2024-05-12 13:04:41,249 INFO L125 PetriNetUnfolderBase]: For 14280/14280 co-relation queries the response was YES. [2024-05-12 13:04:41,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30321 conditions, 10618 events. 6749/10618 cut-off events. For 14280/14280 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 68114 event pairs, 3661 based on Foata normal form. 6/9935 useless extension candidates. Maximal degree in co-relation 30295. Up to 9491 conditions per place. [2024-05-12 13:04:41,356 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 91 selfloop transitions, 16 changer transitions 0/115 dead transitions. [2024-05-12 13:04:41,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 115 transitions, 754 flow [2024-05-12 13:04:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:04:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:04:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-05-12 13:04:41,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-05-12 13:04:41,358 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 426 flow. Second operand 6 states and 148 transitions. [2024-05-12 13:04:41,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 115 transitions, 754 flow [2024-05-12 13:04:41,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 115 transitions, 729 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-05-12 13:04:41,373 INFO L231 Difference]: Finished difference. Result has 74 places, 85 transitions, 491 flow [2024-05-12 13:04:41,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=491, PETRI_PLACES=74, PETRI_TRANSITIONS=85} [2024-05-12 13:04:41,374 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2024-05-12 13:04:41,374 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 85 transitions, 491 flow [2024-05-12 13:04:41,375 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) [2024-05-12 13:04:41,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:41,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:41,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:04:41,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:41,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:41,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1291163000, now seen corresponding path program 1 times [2024-05-12 13:04:41,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:41,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112649926] [2024-05-12 13:04:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:41,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:41,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:41,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112649926] [2024-05-12 13:04:41,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112649926] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:41,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:41,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:04:41,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933974899] [2024-05-12 13:04:41,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:41,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:04:41,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:41,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:04:41,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:04:41,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-05-12 13:04:41,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 85 transitions, 491 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:41,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:41,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-05-12 13:04:41,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:42,172 INFO L124 PetriNetUnfolderBase]: 3172/5773 cut-off events. [2024-05-12 13:04:42,172 INFO L125 PetriNetUnfolderBase]: For 10046/10308 co-relation queries the response was YES. [2024-05-12 13:04:42,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15469 conditions, 5773 events. 3172/5773 cut-off events. For 10046/10308 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 42198 event pairs, 605 based on Foata normal form. 52/5623 useless extension candidates. Maximal degree in co-relation 15441. Up to 3751 conditions per place. [2024-05-12 13:04:42,201 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 52 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2024-05-12 13:04:42,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 576 flow [2024-05-12 13:04:42,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:04:42,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:04:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-05-12 13:04:42,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-05-12 13:04:42,202 INFO L175 Difference]: Start difference. First operand has 74 places, 85 transitions, 491 flow. Second operand 3 states and 101 transitions. [2024-05-12 13:04:42,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 576 flow [2024-05-12 13:04:42,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 88 transitions, 537 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-05-12 13:04:42,208 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 389 flow [2024-05-12 13:04:42,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2024-05-12 13:04:42,210 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-05-12 13:04:42,210 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 389 flow [2024-05-12 13:04:42,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:42,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:42,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:42,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:04:42,211 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:42,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:42,212 INFO L85 PathProgramCache]: Analyzing trace with hash 945412976, now seen corresponding path program 1 times [2024-05-12 13:04:42,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:42,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109887230] [2024-05-12 13:04:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:42,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:43,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:43,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109887230] [2024-05-12 13:04:43,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109887230] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:43,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:43,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:04:43,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630915879] [2024-05-12 13:04:43,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:43,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:04:43,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:43,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:04:43,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:04:43,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:04:43,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 389 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) [2024-05-12 13:04:43,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:43,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:04:43,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:45,342 INFO L124 PetriNetUnfolderBase]: 6791/10542 cut-off events. [2024-05-12 13:04:45,343 INFO L125 PetriNetUnfolderBase]: For 21893/21893 co-relation queries the response was YES. [2024-05-12 13:04:45,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30556 conditions, 10542 events. 6791/10542 cut-off events. For 21893/21893 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 64377 event pairs, 3838 based on Foata normal form. 2/10245 useless extension candidates. Maximal degree in co-relation 30529. Up to 9586 conditions per place. [2024-05-12 13:04:45,395 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 92 selfloop transitions, 20 changer transitions 2/121 dead transitions. [2024-05-12 13:04:45,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 789 flow [2024-05-12 13:04:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:45,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-05-12 13:04:45,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4514285714285714 [2024-05-12 13:04:45,397 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 389 flow. Second operand 7 states and 158 transitions. [2024-05-12 13:04:45,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 789 flow [2024-05-12 13:04:45,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 121 transitions, 761 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:04:45,406 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 530 flow [2024-05-12 13:04:45,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2024-05-12 13:04:45,409 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-05-12 13:04:45,410 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 530 flow [2024-05-12 13:04:45,410 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) [2024-05-12 13:04:45,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:45,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:45,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:04:45,410 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:45,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:45,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1685867562, now seen corresponding path program 2 times [2024-05-12 13:04:45,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:45,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539423625] [2024-05-12 13:04:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:45,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:47,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:47,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539423625] [2024-05-12 13:04:47,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539423625] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:47,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:47,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:04:47,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719833654] [2024-05-12 13:04:47,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:47,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:04:47,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:47,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:04:47,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:04:47,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:04:47,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 530 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) [2024-05-12 13:04:47,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:47,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:04:47,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:48,749 INFO L124 PetriNetUnfolderBase]: 6053/9515 cut-off events. [2024-05-12 13:04:48,749 INFO L125 PetriNetUnfolderBase]: For 24785/24785 co-relation queries the response was YES. [2024-05-12 13:04:48,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29900 conditions, 9515 events. 6053/9515 cut-off events. For 24785/24785 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 58432 event pairs, 3235 based on Foata normal form. 2/9218 useless extension candidates. Maximal degree in co-relation 29869. Up to 8544 conditions per place. [2024-05-12 13:04:48,803 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 90 selfloop transitions, 20 changer transitions 0/117 dead transitions. [2024-05-12 13:04:48,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 866 flow [2024-05-12 13:04:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:04:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:04:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-05-12 13:04:48,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-05-12 13:04:48,805 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 530 flow. Second operand 6 states and 135 transitions. [2024-05-12 13:04:48,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 866 flow [2024-05-12 13:04:48,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 843 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 13:04:48,816 INFO L231 Difference]: Finished difference. Result has 81 places, 91 transitions, 593 flow [2024-05-12 13:04:48,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=593, PETRI_PLACES=81, PETRI_TRANSITIONS=91} [2024-05-12 13:04:48,817 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 25 predicate places. [2024-05-12 13:04:48,817 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 91 transitions, 593 flow [2024-05-12 13:04:48,817 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) [2024-05-12 13:04:48,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:48,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:48,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:04:48,818 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:48,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:48,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1392068524, now seen corresponding path program 3 times [2024-05-12 13:04:48,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:48,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329201673] [2024-05-12 13:04:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:48,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:50,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:50,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329201673] [2024-05-12 13:04:50,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329201673] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:50,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:50,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:04:50,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254172963] [2024-05-12 13:04:50,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:50,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:04:50,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:50,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:04:50,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:04:50,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:04:50,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 593 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) [2024-05-12 13:04:50,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:50,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:04:50,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:51,808 INFO L124 PetriNetUnfolderBase]: 6056/9521 cut-off events. [2024-05-12 13:04:51,808 INFO L125 PetriNetUnfolderBase]: For 31088/31108 co-relation queries the response was YES. [2024-05-12 13:04:51,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31394 conditions, 9521 events. 6056/9521 cut-off events. For 31088/31108 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 58677 event pairs, 3090 based on Foata normal form. 18/9238 useless extension candidates. Maximal degree in co-relation 31361. Up to 8513 conditions per place. [2024-05-12 13:04:51,850 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 89 selfloop transitions, 25 changer transitions 0/121 dead transitions. [2024-05-12 13:04:51,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 121 transitions, 955 flow [2024-05-12 13:04:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:04:51,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:04:51,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-05-12 13:04:51,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-05-12 13:04:51,853 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 593 flow. Second operand 6 states and 136 transitions. [2024-05-12 13:04:51,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 121 transitions, 955 flow [2024-05-12 13:04:51,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 895 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-05-12 13:04:51,865 INFO L231 Difference]: Finished difference. Result has 83 places, 94 transitions, 631 flow [2024-05-12 13:04:51,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=631, PETRI_PLACES=83, PETRI_TRANSITIONS=94} [2024-05-12 13:04:51,865 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-05-12 13:04:51,866 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 94 transitions, 631 flow [2024-05-12 13:04:51,866 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) [2024-05-12 13:04:51,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:51,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:51,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:04:51,867 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:51,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash -844113704, now seen corresponding path program 1 times [2024-05-12 13:04:51,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:51,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174278622] [2024-05-12 13:04:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:51,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:53,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:53,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:53,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174278622] [2024-05-12 13:04:53,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174278622] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:53,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:53,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:53,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077038987] [2024-05-12 13:04:53,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:53,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:53,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:53,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:53,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:53,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:04:53,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 94 transitions, 631 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) [2024-05-12 13:04:53,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:53,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:04:53,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:55,071 INFO L124 PetriNetUnfolderBase]: 6101/9584 cut-off events. [2024-05-12 13:04:55,072 INFO L125 PetriNetUnfolderBase]: For 31253/31253 co-relation queries the response was YES. [2024-05-12 13:04:55,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31692 conditions, 9584 events. 6101/9584 cut-off events. For 31253/31253 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 58820 event pairs, 2780 based on Foata normal form. 4/9288 useless extension candidates. Maximal degree in co-relation 31658. Up to 8557 conditions per place. [2024-05-12 13:04:55,120 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 101 selfloop transitions, 32 changer transitions 0/140 dead transitions. [2024-05-12 13:04:55,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 140 transitions, 1082 flow [2024-05-12 13:04:55,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:55,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-05-12 13:04:55,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657142857142857 [2024-05-12 13:04:55,123 INFO L175 Difference]: Start difference. First operand has 83 places, 94 transitions, 631 flow. Second operand 7 states and 163 transitions. [2024-05-12 13:04:55,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 140 transitions, 1082 flow [2024-05-12 13:04:55,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 140 transitions, 1018 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-05-12 13:04:55,135 INFO L231 Difference]: Finished difference. Result has 87 places, 103 transitions, 723 flow [2024-05-12 13:04:55,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=723, PETRI_PLACES=87, PETRI_TRANSITIONS=103} [2024-05-12 13:04:55,136 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-05-12 13:04:55,136 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 103 transitions, 723 flow [2024-05-12 13:04:55,136 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) [2024-05-12 13:04:55,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:55,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:55,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:04:55,136 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:55,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:55,137 INFO L85 PathProgramCache]: Analyzing trace with hash 722288030, now seen corresponding path program 2 times [2024-05-12 13:04:55,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:55,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189440118] [2024-05-12 13:04:55,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:55,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:56,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:56,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189440118] [2024-05-12 13:04:56,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189440118] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:56,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:56,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:56,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489424784] [2024-05-12 13:04:56,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:56,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:56,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:56,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:56,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:56,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:04:56,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 103 transitions, 723 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) [2024-05-12 13:04:56,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:56,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:04:56,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:58,390 INFO L124 PetriNetUnfolderBase]: 6175/9686 cut-off events. [2024-05-12 13:04:58,391 INFO L125 PetriNetUnfolderBase]: For 40980/40980 co-relation queries the response was YES. [2024-05-12 13:04:58,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34619 conditions, 9686 events. 6175/9686 cut-off events. For 40980/40980 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 59324 event pairs, 2702 based on Foata normal form. 4/9390 useless extension candidates. Maximal degree in co-relation 34583. Up to 8572 conditions per place. [2024-05-12 13:04:58,456 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 107 selfloop transitions, 42 changer transitions 0/156 dead transitions. [2024-05-12 13:04:58,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 156 transitions, 1342 flow [2024-05-12 13:04:58,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:58,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-05-12 13:04:58,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4685714285714286 [2024-05-12 13:04:58,459 INFO L175 Difference]: Start difference. First operand has 87 places, 103 transitions, 723 flow. Second operand 7 states and 164 transitions. [2024-05-12 13:04:58,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 156 transitions, 1342 flow [2024-05-12 13:04:58,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 156 transitions, 1275 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-05-12 13:04:58,480 INFO L231 Difference]: Finished difference. Result has 92 places, 118 transitions, 940 flow [2024-05-12 13:04:58,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=940, PETRI_PLACES=92, PETRI_TRANSITIONS=118} [2024-05-12 13:04:58,482 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-05-12 13:04:58,482 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 118 transitions, 940 flow [2024-05-12 13:04:58,482 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) [2024-05-12 13:04:58,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:58,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:58,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:04:58,483 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:04:58,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:58,483 INFO L85 PathProgramCache]: Analyzing trace with hash 722288247, now seen corresponding path program 1 times [2024-05-12 13:04:58,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:58,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095047038] [2024-05-12 13:04:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:58,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:00,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:00,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095047038] [2024-05-12 13:05:00,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095047038] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:00,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:00,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:05:00,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064574026] [2024-05-12 13:05:00,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:00,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:05:00,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:00,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:05:00,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:05:00,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:05:00,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 118 transitions, 940 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) [2024-05-12 13:05:00,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:00,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:05:00,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:02,088 INFO L124 PetriNetUnfolderBase]: 6253/9797 cut-off events. [2024-05-12 13:05:02,089 INFO L125 PetriNetUnfolderBase]: For 52979/52979 co-relation queries the response was YES. [2024-05-12 13:05:02,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37398 conditions, 9797 events. 6253/9797 cut-off events. For 52979/52979 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 59902 event pairs, 2681 based on Foata normal form. 6/9502 useless extension candidates. Maximal degree in co-relation 37360. Up to 8756 conditions per place. [2024-05-12 13:05:02,134 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 121 selfloop transitions, 30 changer transitions 0/158 dead transitions. [2024-05-12 13:05:02,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 158 transitions, 1419 flow [2024-05-12 13:05:02,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:05:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:05:02,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-05-12 13:05:02,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542857142857143 [2024-05-12 13:05:02,136 INFO L175 Difference]: Start difference. First operand has 92 places, 118 transitions, 940 flow. Second operand 7 states and 159 transitions. [2024-05-12 13:05:02,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 158 transitions, 1419 flow [2024-05-12 13:05:02,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 158 transitions, 1327 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-05-12 13:05:02,210 INFO L231 Difference]: Finished difference. Result has 95 places, 122 transitions, 978 flow [2024-05-12 13:05:02,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=978, PETRI_PLACES=95, PETRI_TRANSITIONS=122} [2024-05-12 13:05:02,211 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2024-05-12 13:05:02,211 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 122 transitions, 978 flow [2024-05-12 13:05:02,212 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) [2024-05-12 13:05:02,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:02,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:02,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:05:02,212 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:02,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:02,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1918900755, now seen corresponding path program 2 times [2024-05-12 13:05:02,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:02,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962499849] [2024-05-12 13:05:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:02,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:04,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:04,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962499849] [2024-05-12 13:05:04,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962499849] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:04,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:04,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:05:04,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168159587] [2024-05-12 13:05:04,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:04,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:05:04,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:04,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:05:04,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:05:04,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:05:04,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 122 transitions, 978 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) [2024-05-12 13:05:04,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:04,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:05:04,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:05,896 INFO L124 PetriNetUnfolderBase]: 6355/9928 cut-off events. [2024-05-12 13:05:05,896 INFO L125 PetriNetUnfolderBase]: For 62358/62381 co-relation queries the response was YES. [2024-05-12 13:05:05,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39581 conditions, 9928 events. 6355/9928 cut-off events. For 62358/62381 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 60778 event pairs, 2329 based on Foata normal form. 24/9653 useless extension candidates. Maximal degree in co-relation 39542. Up to 8670 conditions per place. [2024-05-12 13:05:05,965 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 118 selfloop transitions, 46 changer transitions 0/171 dead transitions. [2024-05-12 13:05:05,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 171 transitions, 1611 flow [2024-05-12 13:05:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:05:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:05:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-05-12 13:05:05,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-05-12 13:05:05,967 INFO L175 Difference]: Start difference. First operand has 95 places, 122 transitions, 978 flow. Second operand 7 states and 165 transitions. [2024-05-12 13:05:05,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 171 transitions, 1611 flow [2024-05-12 13:05:05,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 171 transitions, 1521 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-05-12 13:05:06,000 INFO L231 Difference]: Finished difference. Result has 98 places, 130 transitions, 1125 flow [2024-05-12 13:05:06,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1125, PETRI_PLACES=98, PETRI_TRANSITIONS=130} [2024-05-12 13:05:06,001 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2024-05-12 13:05:06,001 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 130 transitions, 1125 flow [2024-05-12 13:05:06,001 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) [2024-05-12 13:05:06,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:06,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:06,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:05:06,002 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:06,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:06,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1918633845, now seen corresponding path program 3 times [2024-05-12 13:05:06,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:06,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299745347] [2024-05-12 13:05:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:06,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:07,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:07,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299745347] [2024-05-12 13:05:07,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299745347] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:07,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:07,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:05:07,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195283773] [2024-05-12 13:05:07,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:07,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:05:07,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:07,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:05:07,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:05:08,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:05:08,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 130 transitions, 1125 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) [2024-05-12 13:05:08,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:08,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:05:08,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:09,687 INFO L124 PetriNetUnfolderBase]: 6340/9931 cut-off events. [2024-05-12 13:05:09,688 INFO L125 PetriNetUnfolderBase]: For 73401/73424 co-relation queries the response was YES. [2024-05-12 13:05:09,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41442 conditions, 9931 events. 6340/9931 cut-off events. For 73401/73424 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 61061 event pairs, 2553 based on Foata normal form. 24/9648 useless extension candidates. Maximal degree in co-relation 41401. Up to 8851 conditions per place. [2024-05-12 13:05:09,762 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 126 selfloop transitions, 35 changer transitions 0/168 dead transitions. [2024-05-12 13:05:09,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 168 transitions, 1612 flow [2024-05-12 13:05:09,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:05:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:05:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-05-12 13:05:09,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-05-12 13:05:09,764 INFO L175 Difference]: Start difference. First operand has 98 places, 130 transitions, 1125 flow. Second operand 7 states and 160 transitions. [2024-05-12 13:05:09,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 168 transitions, 1612 flow [2024-05-12 13:05:09,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 168 transitions, 1500 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-05-12 13:05:09,839 INFO L231 Difference]: Finished difference. Result has 102 places, 130 transitions, 1092 flow [2024-05-12 13:05:09,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1092, PETRI_PLACES=102, PETRI_TRANSITIONS=130} [2024-05-12 13:05:09,839 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-05-12 13:05:09,840 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 130 transitions, 1092 flow [2024-05-12 13:05:09,840 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) [2024-05-12 13:05:09,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:09,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:09,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:05:09,840 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:09,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:09,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1918633628, now seen corresponding path program 3 times [2024-05-12 13:05:09,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:09,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286345926] [2024-05-12 13:05:09,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:09,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:11,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:11,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286345926] [2024-05-12 13:05:11,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286345926] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:11,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:11,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:05:11,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974433865] [2024-05-12 13:05:11,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:11,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:05:11,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:11,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:05:11,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:05:11,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:05:11,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 130 transitions, 1092 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) [2024-05-12 13:05:11,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:11,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:05:11,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:13,148 INFO L124 PetriNetUnfolderBase]: 6330/9898 cut-off events. [2024-05-12 13:05:13,148 INFO L125 PetriNetUnfolderBase]: For 72384/72391 co-relation queries the response was YES. [2024-05-12 13:05:13,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41138 conditions, 9898 events. 6330/9898 cut-off events. For 72384/72391 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 60581 event pairs, 2532 based on Foata normal form. 8/9606 useless extension candidates. Maximal degree in co-relation 41095. Up to 8724 conditions per place. [2024-05-12 13:05:13,219 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 122 selfloop transitions, 55 changer transitions 0/184 dead transitions. [2024-05-12 13:05:13,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 184 transitions, 1882 flow [2024-05-12 13:05:13,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:05:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:05:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-05-12 13:05:13,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657142857142857 [2024-05-12 13:05:13,223 INFO L175 Difference]: Start difference. First operand has 102 places, 130 transitions, 1092 flow. Second operand 7 states and 163 transitions. [2024-05-12 13:05:13,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 184 transitions, 1882 flow [2024-05-12 13:05:13,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 184 transitions, 1772 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 13:05:13,278 INFO L231 Difference]: Finished difference. Result has 105 places, 148 transitions, 1411 flow [2024-05-12 13:05:13,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1411, PETRI_PLACES=105, PETRI_TRANSITIONS=148} [2024-05-12 13:05:13,278 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2024-05-12 13:05:13,278 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 148 transitions, 1411 flow [2024-05-12 13:05:13,279 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) [2024-05-12 13:05:13,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:13,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:13,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:05:13,279 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:13,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:13,280 INFO L85 PathProgramCache]: Analyzing trace with hash -438454194, now seen corresponding path program 1 times [2024-05-12 13:05:13,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:13,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112412101] [2024-05-12 13:05:13,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:13,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:14,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:14,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112412101] [2024-05-12 13:05:14,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112412101] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:14,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:14,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:05:14,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304313636] [2024-05-12 13:05:14,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:14,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:05:14,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:14,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:05:14,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:05:14,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2024-05-12 13:05:14,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 148 transitions, 1411 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:14,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:14,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2024-05-12 13:05:14,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:16,154 INFO L124 PetriNetUnfolderBase]: 5473/8779 cut-off events. [2024-05-12 13:05:16,155 INFO L125 PetriNetUnfolderBase]: For 75550/75550 co-relation queries the response was YES. [2024-05-12 13:05:16,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38662 conditions, 8779 events. 5473/8779 cut-off events. For 75550/75550 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 54832 event pairs, 2273 based on Foata normal form. 1/8522 useless extension candidates. Maximal degree in co-relation 38616. Up to 7783 conditions per place. [2024-05-12 13:05:16,224 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 149 selfloop transitions, 9 changer transitions 0/166 dead transitions. [2024-05-12 13:05:16,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 166 transitions, 1815 flow [2024-05-12 13:05:16,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:05:16,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:05:16,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-05-12 13:05:16,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.448 [2024-05-12 13:05:16,226 INFO L175 Difference]: Start difference. First operand has 105 places, 148 transitions, 1411 flow. Second operand 5 states and 112 transitions. [2024-05-12 13:05:16,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 166 transitions, 1815 flow [2024-05-12 13:05:16,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 166 transitions, 1683 flow, removed 55 selfloop flow, removed 2 redundant places. [2024-05-12 13:05:16,302 INFO L231 Difference]: Finished difference. Result has 108 places, 151 transitions, 1331 flow [2024-05-12 13:05:16,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1331, PETRI_PLACES=108, PETRI_TRANSITIONS=151} [2024-05-12 13:05:16,303 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 52 predicate places. [2024-05-12 13:05:16,303 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 151 transitions, 1331 flow [2024-05-12 13:05:16,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:16,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:16,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:16,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:05:16,304 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:16,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:16,304 INFO L85 PathProgramCache]: Analyzing trace with hash 814511435, now seen corresponding path program 1 times [2024-05-12 13:05:16,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:16,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675596563] [2024-05-12 13:05:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:18,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:18,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675596563] [2024-05-12 13:05:18,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675596563] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:18,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:18,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:05:18,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388129026] [2024-05-12 13:05:18,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:18,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:05:18,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:18,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:05:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:05:18,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:05:18,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 151 transitions, 1331 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:18,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:18,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:05:18,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:20,176 INFO L124 PetriNetUnfolderBase]: 6336/9899 cut-off events. [2024-05-12 13:05:20,177 INFO L125 PetriNetUnfolderBase]: For 90311/90311 co-relation queries the response was YES. [2024-05-12 13:05:20,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44662 conditions, 9899 events. 6336/9899 cut-off events. For 90311/90311 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 60423 event pairs, 2681 based on Foata normal form. 2/9604 useless extension candidates. Maximal degree in co-relation 44614. Up to 8866 conditions per place. [2024-05-12 13:05:20,230 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 148 selfloop transitions, 40 changer transitions 0/195 dead transitions. [2024-05-12 13:05:20,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 195 transitions, 1933 flow [2024-05-12 13:05:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:05:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:05:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-05-12 13:05:20,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4685714285714286 [2024-05-12 13:05:20,232 INFO L175 Difference]: Start difference. First operand has 108 places, 151 transitions, 1331 flow. Second operand 7 states and 164 transitions. [2024-05-12 13:05:20,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 195 transitions, 1933 flow [2024-05-12 13:05:20,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 195 transitions, 1819 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-05-12 13:05:20,294 INFO L231 Difference]: Finished difference. Result has 113 places, 160 transitions, 1443 flow [2024-05-12 13:05:20,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1443, PETRI_PLACES=113, PETRI_TRANSITIONS=160} [2024-05-12 13:05:20,294 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 57 predicate places. [2024-05-12 13:05:20,294 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 160 transitions, 1443 flow [2024-05-12 13:05:20,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:20,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:20,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:20,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:05:20,295 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:20,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:20,296 INFO L85 PathProgramCache]: Analyzing trace with hash 912345927, now seen corresponding path program 1 times [2024-05-12 13:05:20,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:20,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467991343] [2024-05-12 13:05:20,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:20,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:22,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:22,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467991343] [2024-05-12 13:05:22,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467991343] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:22,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:22,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:05:22,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24475731] [2024-05-12 13:05:22,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:22,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:05:22,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:22,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:05:22,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:05:22,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:05:22,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 160 transitions, 1443 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:22,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:22,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:05:22,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:24,277 INFO L124 PetriNetUnfolderBase]: 6455/10076 cut-off events. [2024-05-12 13:05:24,277 INFO L125 PetriNetUnfolderBase]: For 100296/100296 co-relation queries the response was YES. [2024-05-12 13:05:24,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46328 conditions, 10076 events. 6455/10076 cut-off events. For 100296/100296 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 61571 event pairs, 2645 based on Foata normal form. 8/9783 useless extension candidates. Maximal degree in co-relation 46278. Up to 8927 conditions per place. [2024-05-12 13:05:24,373 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 166 selfloop transitions, 50 changer transitions 0/223 dead transitions. [2024-05-12 13:05:24,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 223 transitions, 2247 flow [2024-05-12 13:05:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:05:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:05:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:05:24,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775 [2024-05-12 13:05:24,382 INFO L175 Difference]: Start difference. First operand has 113 places, 160 transitions, 1443 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:05:24,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 223 transitions, 2247 flow [2024-05-12 13:05:24,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 223 transitions, 2183 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-05-12 13:05:24,469 INFO L231 Difference]: Finished difference. Result has 120 places, 173 transitions, 1727 flow [2024-05-12 13:05:24,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1727, PETRI_PLACES=120, PETRI_TRANSITIONS=173} [2024-05-12 13:05:24,470 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2024-05-12 13:05:24,470 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 173 transitions, 1727 flow [2024-05-12 13:05:24,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:24,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:24,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:24,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:05:24,471 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:24,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:24,472 INFO L85 PathProgramCache]: Analyzing trace with hash 916100337, now seen corresponding path program 2 times [2024-05-12 13:05:24,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:24,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854771620] [2024-05-12 13:05:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:24,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:26,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:26,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854771620] [2024-05-12 13:05:26,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854771620] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:26,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:26,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:05:26,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052457044] [2024-05-12 13:05:26,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:26,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:05:26,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:26,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:05:26,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:05:26,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:05:26,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 173 transitions, 1727 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:26,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:26,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:05:26,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:28,903 INFO L124 PetriNetUnfolderBase]: 6673/10375 cut-off events. [2024-05-12 13:05:28,904 INFO L125 PetriNetUnfolderBase]: For 125347/125347 co-relation queries the response was YES. [2024-05-12 13:05:28,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51320 conditions, 10375 events. 6673/10375 cut-off events. For 125347/125347 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 63212 event pairs, 2688 based on Foata normal form. 12/10087 useless extension candidates. Maximal degree in co-relation 51267. Up to 9157 conditions per place. [2024-05-12 13:05:28,977 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 185 selfloop transitions, 39 changer transitions 0/231 dead transitions. [2024-05-12 13:05:28,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 231 transitions, 2569 flow [2024-05-12 13:05:28,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:05:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:05:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-05-12 13:05:28,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2024-05-12 13:05:28,979 INFO L175 Difference]: Start difference. First operand has 120 places, 173 transitions, 1727 flow. Second operand 8 states and 188 transitions. [2024-05-12 13:05:28,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 231 transitions, 2569 flow [2024-05-12 13:05:29,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 231 transitions, 2423 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-05-12 13:05:29,102 INFO L231 Difference]: Finished difference. Result has 126 places, 182 transitions, 1823 flow [2024-05-12 13:05:29,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1823, PETRI_PLACES=126, PETRI_TRANSITIONS=182} [2024-05-12 13:05:29,103 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2024-05-12 13:05:29,103 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 182 transitions, 1823 flow [2024-05-12 13:05:29,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:29,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:29,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:29,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:05:29,103 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:29,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:29,104 INFO L85 PathProgramCache]: Analyzing trace with hash 818350661, now seen corresponding path program 3 times [2024-05-12 13:05:29,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:29,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063774799] [2024-05-12 13:05:29,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:29,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:31,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:31,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063774799] [2024-05-12 13:05:31,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063774799] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:31,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:31,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:05:31,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242997951] [2024-05-12 13:05:31,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:31,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:05:31,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:31,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:05:31,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:05:31,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:05:31,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 182 transitions, 1823 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:31,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:31,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:05:31,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:33,492 INFO L124 PetriNetUnfolderBase]: 7014/10910 cut-off events. [2024-05-12 13:05:33,492 INFO L125 PetriNetUnfolderBase]: For 150825/150825 co-relation queries the response was YES. [2024-05-12 13:05:33,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56975 conditions, 10910 events. 7014/10910 cut-off events. For 150825/150825 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 66993 event pairs, 2719 based on Foata normal form. 8/10597 useless extension candidates. Maximal degree in co-relation 56920. Up to 9022 conditions per place. [2024-05-12 13:05:33,585 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 168 selfloop transitions, 77 changer transitions 0/252 dead transitions. [2024-05-12 13:05:33,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 252 transitions, 2863 flow [2024-05-12 13:05:33,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:05:33,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:05:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-05-12 13:05:33,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-05-12 13:05:33,588 INFO L175 Difference]: Start difference. First operand has 126 places, 182 transitions, 1823 flow. Second operand 8 states and 198 transitions. [2024-05-12 13:05:33,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 252 transitions, 2863 flow [2024-05-12 13:05:33,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 252 transitions, 2755 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-05-12 13:05:33,770 INFO L231 Difference]: Finished difference. Result has 132 places, 195 transitions, 2180 flow [2024-05-12 13:05:33,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2180, PETRI_PLACES=132, PETRI_TRANSITIONS=195} [2024-05-12 13:05:33,771 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-05-12 13:05:33,771 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 195 transitions, 2180 flow [2024-05-12 13:05:33,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:33,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:33,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:33,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:05:33,772 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:33,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:33,772 INFO L85 PathProgramCache]: Analyzing trace with hash -651898299, now seen corresponding path program 4 times [2024-05-12 13:05:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:33,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988217967] [2024-05-12 13:05:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:36,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:36,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988217967] [2024-05-12 13:05:36,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988217967] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:36,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:36,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:05:36,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001343160] [2024-05-12 13:05:36,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:36,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:05:36,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:36,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:05:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:05:36,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:05:36,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 195 transitions, 2180 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:36,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:36,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:05:36,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:38,151 INFO L124 PetriNetUnfolderBase]: 7118/11064 cut-off events. [2024-05-12 13:05:38,151 INFO L125 PetriNetUnfolderBase]: For 175945/175954 co-relation queries the response was YES. [2024-05-12 13:05:38,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61563 conditions, 11064 events. 7118/11064 cut-off events. For 175945/175954 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 68116 event pairs, 2528 based on Foata normal form. 14/10753 useless extension candidates. Maximal degree in co-relation 61504. Up to 9642 conditions per place. [2024-05-12 13:05:38,245 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 162 selfloop transitions, 91 changer transitions 0/260 dead transitions. [2024-05-12 13:05:38,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 260 transitions, 3280 flow [2024-05-12 13:05:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:05:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:05:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:05:38,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725 [2024-05-12 13:05:38,246 INFO L175 Difference]: Start difference. First operand has 132 places, 195 transitions, 2180 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:05:38,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 260 transitions, 3280 flow [2024-05-12 13:05:38,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 260 transitions, 3116 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-05-12 13:05:38,432 INFO L231 Difference]: Finished difference. Result has 139 places, 212 transitions, 2690 flow [2024-05-12 13:05:38,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2690, PETRI_PLACES=139, PETRI_TRANSITIONS=212} [2024-05-12 13:05:38,433 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 83 predicate places. [2024-05-12 13:05:38,433 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 212 transitions, 2690 flow [2024-05-12 13:05:38,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:38,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:38,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:38,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:05:38,433 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:38,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2043066355, now seen corresponding path program 5 times [2024-05-12 13:05:38,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:38,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187866906] [2024-05-12 13:05:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:38,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:40,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:40,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187866906] [2024-05-12 13:05:40,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187866906] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:40,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:40,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:05:40,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877633778] [2024-05-12 13:05:40,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:40,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:05:40,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:40,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:05:40,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:05:40,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:05:40,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 212 transitions, 2690 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:40,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:40,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:05:40,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:42,510 INFO L124 PetriNetUnfolderBase]: 7336/11403 cut-off events. [2024-05-12 13:05:42,510 INFO L125 PetriNetUnfolderBase]: For 205844/205875 co-relation queries the response was YES. [2024-05-12 13:05:42,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66491 conditions, 11403 events. 7336/11403 cut-off events. For 205844/205875 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 70421 event pairs, 2671 based on Foata normal form. 36/11101 useless extension candidates. Maximal degree in co-relation 66428. Up to 10050 conditions per place. [2024-05-12 13:05:42,605 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 215 selfloop transitions, 50 changer transitions 0/272 dead transitions. [2024-05-12 13:05:42,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 272 transitions, 3708 flow [2024-05-12 13:05:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:05:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:05:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:05:42,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725 [2024-05-12 13:05:42,607 INFO L175 Difference]: Start difference. First operand has 139 places, 212 transitions, 2690 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:05:42,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 272 transitions, 3708 flow [2024-05-12 13:05:42,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 272 transitions, 3464 flow, removed 107 selfloop flow, removed 2 redundant places. [2024-05-12 13:05:42,860 INFO L231 Difference]: Finished difference. Result has 145 places, 221 transitions, 2762 flow [2024-05-12 13:05:42,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2762, PETRI_PLACES=145, PETRI_TRANSITIONS=221} [2024-05-12 13:05:42,860 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 89 predicate places. [2024-05-12 13:05:42,860 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 221 transitions, 2762 flow [2024-05-12 13:05:42,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:42,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:42,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:42,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:05:42,861 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:42,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2051340565, now seen corresponding path program 6 times [2024-05-12 13:05:42,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:42,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44899421] [2024-05-12 13:05:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:42,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:45,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:45,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44899421] [2024-05-12 13:05:45,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44899421] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:45,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:45,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:05:45,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984558248] [2024-05-12 13:05:45,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:45,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:05:45,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:45,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:05:45,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:05:45,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:05:45,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 221 transitions, 2762 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:45,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:45,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:05:45,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:47,426 INFO L124 PetriNetUnfolderBase]: 7462/11529 cut-off events. [2024-05-12 13:05:47,426 INFO L125 PetriNetUnfolderBase]: For 220738/220769 co-relation queries the response was YES. [2024-05-12 13:05:47,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68625 conditions, 11529 events. 7462/11529 cut-off events. For 220738/220769 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 70546 event pairs, 2378 based on Foata normal form. 36/11243 useless extension candidates. Maximal degree in co-relation 68560. Up to 9672 conditions per place. [2024-05-12 13:05:47,512 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 205 selfloop transitions, 74 changer transitions 0/286 dead transitions. [2024-05-12 13:05:47,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 286 transitions, 3940 flow [2024-05-12 13:05:47,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:05:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:05:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-05-12 13:05:47,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-05-12 13:05:47,513 INFO L175 Difference]: Start difference. First operand has 145 places, 221 transitions, 2762 flow. Second operand 8 states and 196 transitions. [2024-05-12 13:05:47,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 286 transitions, 3940 flow [2024-05-12 13:05:47,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 286 transitions, 3771 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-05-12 13:05:47,723 INFO L231 Difference]: Finished difference. Result has 149 places, 230 transitions, 2975 flow [2024-05-12 13:05:47,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2975, PETRI_PLACES=149, PETRI_TRANSITIONS=230} [2024-05-12 13:05:47,724 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 93 predicate places. [2024-05-12 13:05:47,724 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 230 transitions, 2975 flow [2024-05-12 13:05:47,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:47,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:47,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:47,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:05:47,725 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:47,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:47,725 INFO L85 PathProgramCache]: Analyzing trace with hash -643309749, now seen corresponding path program 1 times [2024-05-12 13:05:47,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:47,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129673016] [2024-05-12 13:05:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:47,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:51,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:51,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129673016] [2024-05-12 13:05:51,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129673016] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:51,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:51,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:05:51,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102077296] [2024-05-12 13:05:51,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:51,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:05:51,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:51,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:05:51,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:05:51,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2024-05-12 13:05:51,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 230 transitions, 2975 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:51,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:51,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2024-05-12 13:05:51,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:54,004 INFO L124 PetriNetUnfolderBase]: 6605/10422 cut-off events. [2024-05-12 13:05:54,005 INFO L125 PetriNetUnfolderBase]: For 205006/205006 co-relation queries the response was YES. [2024-05-12 13:05:54,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63307 conditions, 10422 events. 6605/10422 cut-off events. For 205006/205006 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 65108 event pairs, 2202 based on Foata normal form. 4/10147 useless extension candidates. Maximal degree in co-relation 63240. Up to 9254 conditions per place. [2024-05-12 13:05:54,081 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 257 selfloop transitions, 27 changer transitions 0/292 dead transitions. [2024-05-12 13:05:54,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 292 transitions, 3892 flow [2024-05-12 13:05:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:05:54,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:05:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-05-12 13:05:54,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4622222222222222 [2024-05-12 13:05:54,083 INFO L175 Difference]: Start difference. First operand has 149 places, 230 transitions, 2975 flow. Second operand 9 states and 208 transitions. [2024-05-12 13:05:54,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 292 transitions, 3892 flow [2024-05-12 13:05:54,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 292 transitions, 3611 flow, removed 81 selfloop flow, removed 5 redundant places. [2024-05-12 13:05:54,285 INFO L231 Difference]: Finished difference. Result has 155 places, 241 transitions, 2927 flow [2024-05-12 13:05:54,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2927, PETRI_PLACES=155, PETRI_TRANSITIONS=241} [2024-05-12 13:05:54,286 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 99 predicate places. [2024-05-12 13:05:54,286 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 241 transitions, 2927 flow [2024-05-12 13:05:54,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:54,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:54,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:54,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:05:54,287 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:54,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash -707176681, now seen corresponding path program 1 times [2024-05-12 13:05:54,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:54,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552225965] [2024-05-12 13:05:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:54,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:05:56,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:05:56,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:05:56,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552225965] [2024-05-12 13:05:56,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552225965] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:05:56,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:05:56,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:05:56,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789514017] [2024-05-12 13:05:56,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:05:56,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:05:56,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:05:56,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:05:56,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:05:56,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2024-05-12 13:05:56,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 241 transitions, 2927 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:56,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:05:56,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2024-05-12 13:05:56,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:05:58,206 INFO L124 PetriNetUnfolderBase]: 6615/10398 cut-off events. [2024-05-12 13:05:58,206 INFO L125 PetriNetUnfolderBase]: For 193596/193596 co-relation queries the response was YES. [2024-05-12 13:05:58,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62052 conditions, 10398 events. 6615/10398 cut-off events. For 193596/193596 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 64426 event pairs, 2317 based on Foata normal form. 2/10133 useless extension candidates. Maximal degree in co-relation 61982. Up to 9338 conditions per place. [2024-05-12 13:05:58,303 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 246 selfloop transitions, 12 changer transitions 0/266 dead transitions. [2024-05-12 13:05:58,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 266 transitions, 3603 flow [2024-05-12 13:05:58,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:05:58,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:05:58,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-05-12 13:05:58,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-05-12 13:05:58,305 INFO L175 Difference]: Start difference. First operand has 155 places, 241 transitions, 2927 flow. Second operand 6 states and 133 transitions. [2024-05-12 13:05:58,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 266 transitions, 3603 flow [2024-05-12 13:05:58,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 266 transitions, 3473 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-05-12 13:05:58,530 INFO L231 Difference]: Finished difference. Result has 156 places, 244 transitions, 2863 flow [2024-05-12 13:05:58,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2863, PETRI_PLACES=156, PETRI_TRANSITIONS=244} [2024-05-12 13:05:58,531 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 100 predicate places. [2024-05-12 13:05:58,531 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 244 transitions, 2863 flow [2024-05-12 13:05:58,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:05:58,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:05:58,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:05:58,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:05:58,531 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:05:58,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:05:58,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1116653409, now seen corresponding path program 1 times [2024-05-12 13:05:58,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:05:58,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22690281] [2024-05-12 13:05:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:05:58,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:05:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:00,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:00,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22690281] [2024-05-12 13:06:00,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22690281] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:00,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:00,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:06:00,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329611808] [2024-05-12 13:06:00,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:00,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:06:00,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:00,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:06:00,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:06:00,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:06:00,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 244 transitions, 2863 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:00,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:00,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:06:00,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:03,189 INFO L124 PetriNetUnfolderBase]: 7521/11582 cut-off events. [2024-05-12 13:06:03,189 INFO L125 PetriNetUnfolderBase]: For 227679/227679 co-relation queries the response was YES. [2024-05-12 13:06:03,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70149 conditions, 11582 events. 7521/11582 cut-off events. For 227679/227679 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 70511 event pairs, 2192 based on Foata normal form. 4/11276 useless extension candidates. Maximal degree in co-relation 70078. Up to 10477 conditions per place. [2024-05-12 13:06:03,274 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 247 selfloop transitions, 39 changer transitions 0/293 dead transitions. [2024-05-12 13:06:03,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 293 transitions, 3683 flow [2024-05-12 13:06:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:06:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:06:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-05-12 13:06:03,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-05-12 13:06:03,276 INFO L175 Difference]: Start difference. First operand has 156 places, 244 transitions, 2863 flow. Second operand 8 states and 184 transitions. [2024-05-12 13:06:03,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 293 transitions, 3683 flow [2024-05-12 13:06:03,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 293 transitions, 3645 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-05-12 13:06:03,469 INFO L231 Difference]: Finished difference. Result has 161 places, 251 transitions, 3040 flow [2024-05-12 13:06:03,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2825, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3040, PETRI_PLACES=161, PETRI_TRANSITIONS=251} [2024-05-12 13:06:03,470 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 105 predicate places. [2024-05-12 13:06:03,470 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 251 transitions, 3040 flow [2024-05-12 13:06:03,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:03,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:03,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:06:03,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:06:03,471 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:06:03,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:03,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1116714944, now seen corresponding path program 1 times [2024-05-12 13:06:03,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:03,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399379721] [2024-05-12 13:06:03,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:03,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:06,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:06,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399379721] [2024-05-12 13:06:06,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399379721] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:06,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:06,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:06:06,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068652685] [2024-05-12 13:06:06,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:06,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:06:06,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:06,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:06:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:06:06,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:06:06,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 251 transitions, 3040 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:06,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:06,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:06:06,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:08,823 INFO L124 PetriNetUnfolderBase]: 7537/11643 cut-off events. [2024-05-12 13:06:08,823 INFO L125 PetriNetUnfolderBase]: For 246915/246915 co-relation queries the response was YES. [2024-05-12 13:06:08,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71794 conditions, 11643 events. 7537/11643 cut-off events. For 246915/246915 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 71145 event pairs, 2549 based on Foata normal form. 4/11324 useless extension candidates. Maximal degree in co-relation 71721. Up to 10372 conditions per place. [2024-05-12 13:06:08,941 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 240 selfloop transitions, 63 changer transitions 0/310 dead transitions. [2024-05-12 13:06:08,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 310 transitions, 4031 flow [2024-05-12 13:06:08,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:06:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:06:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-05-12 13:06:08,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-05-12 13:06:08,943 INFO L175 Difference]: Start difference. First operand has 161 places, 251 transitions, 3040 flow. Second operand 8 states and 192 transitions. [2024-05-12 13:06:08,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 310 transitions, 4031 flow [2024-05-12 13:06:09,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 310 transitions, 3874 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-05-12 13:06:09,215 INFO L231 Difference]: Finished difference. Result has 165 places, 261 transitions, 3264 flow [2024-05-12 13:06:09,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3264, PETRI_PLACES=165, PETRI_TRANSITIONS=261} [2024-05-12 13:06:09,218 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 109 predicate places. [2024-05-12 13:06:09,218 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 261 transitions, 3264 flow [2024-05-12 13:06:09,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:09,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:09,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:06:09,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:06:09,219 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:06:09,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:09,219 INFO L85 PathProgramCache]: Analyzing trace with hash -406444359, now seen corresponding path program 2 times [2024-05-12 13:06:09,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:09,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190174379] [2024-05-12 13:06:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:09,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:11,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:11,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190174379] [2024-05-12 13:06:11,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190174379] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:11,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:11,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:06:11,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230993047] [2024-05-12 13:06:11,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:11,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:06:11,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:11,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:06:11,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:06:11,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:06:11,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 261 transitions, 3264 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:11,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:11,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:06:11,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:14,256 INFO L124 PetriNetUnfolderBase]: 7571/11606 cut-off events. [2024-05-12 13:06:14,257 INFO L125 PetriNetUnfolderBase]: For 264274/264274 co-relation queries the response was YES. [2024-05-12 13:06:14,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73267 conditions, 11606 events. 7571/11606 cut-off events. For 264274/264274 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 70187 event pairs, 2575 based on Foata normal form. 4/11316 useless extension candidates. Maximal degree in co-relation 73192. Up to 10544 conditions per place. [2024-05-12 13:06:14,360 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 257 selfloop transitions, 43 changer transitions 0/307 dead transitions. [2024-05-12 13:06:14,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 307 transitions, 4116 flow [2024-05-12 13:06:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:06:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:06:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-05-12 13:06:14,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-05-12 13:06:14,362 INFO L175 Difference]: Start difference. First operand has 165 places, 261 transitions, 3264 flow. Second operand 8 states and 185 transitions. [2024-05-12 13:06:14,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 307 transitions, 4116 flow [2024-05-12 13:06:14,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 307 transitions, 3947 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-05-12 13:06:14,640 INFO L231 Difference]: Finished difference. Result has 170 places, 264 transitions, 3290 flow [2024-05-12 13:06:14,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3095, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3290, PETRI_PLACES=170, PETRI_TRANSITIONS=264} [2024-05-12 13:06:14,640 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 114 predicate places. [2024-05-12 13:06:14,641 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 264 transitions, 3290 flow [2024-05-12 13:06:14,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:14,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:14,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:06:14,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:06:14,641 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:06:14,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:14,642 INFO L85 PathProgramCache]: Analyzing trace with hash -400937829, now seen corresponding path program 3 times [2024-05-12 13:06:14,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:14,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702384155] [2024-05-12 13:06:14,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:14,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:17,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:17,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702384155] [2024-05-12 13:06:17,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702384155] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:17,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:17,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:06:17,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750909736] [2024-05-12 13:06:17,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:17,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:06:17,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:17,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:06:17,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:06:17,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:06:17,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 264 transitions, 3290 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:17,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:17,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:06:17,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:19,572 INFO L124 PetriNetUnfolderBase]: 7605/11662 cut-off events. [2024-05-12 13:06:19,573 INFO L125 PetriNetUnfolderBase]: For 284671/284671 co-relation queries the response was YES. [2024-05-12 13:06:19,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74436 conditions, 11662 events. 7605/11662 cut-off events. For 284671/284671 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 70677 event pairs, 2546 based on Foata normal form. 4/11370 useless extension candidates. Maximal degree in co-relation 74360. Up to 10531 conditions per place. [2024-05-12 13:06:19,707 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 250 selfloop transitions, 53 changer transitions 0/310 dead transitions. [2024-05-12 13:06:19,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 310 transitions, 4168 flow [2024-05-12 13:06:19,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:06:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:06:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-05-12 13:06:19,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575 [2024-05-12 13:06:19,714 INFO L175 Difference]: Start difference. First operand has 170 places, 264 transitions, 3290 flow. Second operand 8 states and 183 transitions. [2024-05-12 13:06:19,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 310 transitions, 4168 flow [2024-05-12 13:06:20,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 310 transitions, 3999 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-05-12 13:06:20,075 INFO L231 Difference]: Finished difference. Result has 172 places, 267 transitions, 3341 flow [2024-05-12 13:06:20,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3121, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3341, PETRI_PLACES=172, PETRI_TRANSITIONS=267} [2024-05-12 13:06:20,075 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 116 predicate places. [2024-05-12 13:06:20,076 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 267 transitions, 3341 flow [2024-05-12 13:06:20,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:20,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:20,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:06:20,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:06:20,076 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:06:20,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash -461018259, now seen corresponding path program 1 times [2024-05-12 13:06:20,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:20,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704010975] [2024-05-12 13:06:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:21,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:21,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704010975] [2024-05-12 13:06:21,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704010975] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:21,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:21,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:06:21,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951833472] [2024-05-12 13:06:21,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:21,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:06:21,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:21,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:06:21,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:06:21,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:06:21,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 267 transitions, 3341 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:21,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:21,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:06:21,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:24,010 INFO L124 PetriNetUnfolderBase]: 7625/11707 cut-off events. [2024-05-12 13:06:24,010 INFO L125 PetriNetUnfolderBase]: For 301032/301032 co-relation queries the response was YES. [2024-05-12 13:06:24,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75497 conditions, 11707 events. 7625/11707 cut-off events. For 301032/301032 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 71157 event pairs, 2601 based on Foata normal form. 1/11406 useless extension candidates. Maximal degree in co-relation 75420. Up to 10745 conditions per place. [2024-05-12 13:06:24,125 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 269 selfloop transitions, 17 changer transitions 0/293 dead transitions. [2024-05-12 13:06:24,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 293 transitions, 4061 flow [2024-05-12 13:06:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:06:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:06:24,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-05-12 13:06:24,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-05-12 13:06:24,149 INFO L175 Difference]: Start difference. First operand has 172 places, 267 transitions, 3341 flow. Second operand 6 states and 131 transitions. [2024-05-12 13:06:24,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 293 transitions, 4061 flow [2024-05-12 13:06:24,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 293 transitions, 3865 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-05-12 13:06:24,491 INFO L231 Difference]: Finished difference. Result has 172 places, 270 transitions, 3228 flow [2024-05-12 13:06:24,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3145, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3228, PETRI_PLACES=172, PETRI_TRANSITIONS=270} [2024-05-12 13:06:24,493 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 116 predicate places. [2024-05-12 13:06:24,493 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 270 transitions, 3228 flow [2024-05-12 13:06:24,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:24,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:24,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:06:24,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:06:24,493 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:06:24,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:24,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1089658789, now seen corresponding path program 4 times [2024-05-12 13:06:24,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:24,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614847362] [2024-05-12 13:06:24,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:24,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:27,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:27,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614847362] [2024-05-12 13:06:27,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614847362] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:27,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:27,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:06:27,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306888723] [2024-05-12 13:06:27,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:27,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:06:27,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:27,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:06:27,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:06:27,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:06:27,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 270 transitions, 3228 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:27,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:27,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:06:27,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:29,538 INFO L124 PetriNetUnfolderBase]: 7622/11481 cut-off events. [2024-05-12 13:06:29,538 INFO L125 PetriNetUnfolderBase]: For 309439/309450 co-relation queries the response was YES. [2024-05-12 13:06:29,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75856 conditions, 11481 events. 7622/11481 cut-off events. For 309439/309450 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 68350 event pairs, 2341 based on Foata normal form. 12/11264 useless extension candidates. Maximal degree in co-relation 75778. Up to 10491 conditions per place. [2024-05-12 13:06:29,971 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 241 selfloop transitions, 66 changer transitions 0/314 dead transitions. [2024-05-12 13:06:29,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 314 transitions, 4124 flow [2024-05-12 13:06:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:06:29,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:06:29,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-05-12 13:06:29,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-05-12 13:06:29,973 INFO L175 Difference]: Start difference. First operand has 172 places, 270 transitions, 3228 flow. Second operand 8 states and 182 transitions. [2024-05-12 13:06:29,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 314 transitions, 4124 flow [2024-05-12 13:06:30,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 314 transitions, 4069 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-05-12 13:06:30,263 INFO L231 Difference]: Finished difference. Result has 176 places, 273 transitions, 3425 flow [2024-05-12 13:06:30,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3173, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3425, PETRI_PLACES=176, PETRI_TRANSITIONS=273} [2024-05-12 13:06:30,264 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 120 predicate places. [2024-05-12 13:06:30,264 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 273 transitions, 3425 flow [2024-05-12 13:06:30,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:30,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:30,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:06:30,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:06:30,265 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:06:30,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:30,265 INFO L85 PathProgramCache]: Analyzing trace with hash 78750951, now seen corresponding path program 2 times [2024-05-12 13:06:30,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:30,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980373914] [2024-05-12 13:06:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:32,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:32,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980373914] [2024-05-12 13:06:32,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980373914] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:32,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:32,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:06:32,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312134785] [2024-05-12 13:06:32,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:32,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:06:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:32,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:06:32,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:06:32,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:06:32,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 273 transitions, 3425 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:32,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:32,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:06:32,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:34,301 INFO L124 PetriNetUnfolderBase]: 7627/11486 cut-off events. [2024-05-12 13:06:34,301 INFO L125 PetriNetUnfolderBase]: For 328420/328454 co-relation queries the response was YES. [2024-05-12 13:06:34,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77174 conditions, 11486 events. 7627/11486 cut-off events. For 328420/328454 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 68166 event pairs, 2601 based on Foata normal form. 27/11284 useless extension candidates. Maximal degree in co-relation 77095. Up to 10724 conditions per place. [2024-05-12 13:06:34,412 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 268 selfloop transitions, 22 changer transitions 0/297 dead transitions. [2024-05-12 13:06:34,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 297 transitions, 4199 flow [2024-05-12 13:06:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:06:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:06:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-05-12 13:06:34,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-05-12 13:06:34,419 INFO L175 Difference]: Start difference. First operand has 176 places, 273 transitions, 3425 flow. Second operand 6 states and 129 transitions. [2024-05-12 13:06:34,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 297 transitions, 4199 flow [2024-05-12 13:06:34,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 297 transitions, 3971 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-05-12 13:06:34,723 INFO L231 Difference]: Finished difference. Result has 176 places, 276 transitions, 3295 flow [2024-05-12 13:06:34,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3295, PETRI_PLACES=176, PETRI_TRANSITIONS=276} [2024-05-12 13:06:34,724 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 120 predicate places. [2024-05-12 13:06:34,724 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 276 transitions, 3295 flow [2024-05-12 13:06:34,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:34,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:34,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:06:34,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:06:34,724 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:06:34,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:34,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1263606466, now seen corresponding path program 1 times [2024-05-12 13:06:34,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:34,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45339144] [2024-05-12 13:06:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:34,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:36,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:36,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:36,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45339144] [2024-05-12 13:06:36,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45339144] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:36,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:36,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:06:36,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562972832] [2024-05-12 13:06:36,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:36,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:06:36,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:36,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:06:36,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:06:36,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2024-05-12 13:06:36,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 276 transitions, 3295 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) [2024-05-12 13:06:36,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:36,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2024-05-12 13:06:36,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:38,563 INFO L124 PetriNetUnfolderBase]: 6780/10443 cut-off events. [2024-05-12 13:06:38,563 INFO L125 PetriNetUnfolderBase]: For 295065/295065 co-relation queries the response was YES. [2024-05-12 13:06:38,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70164 conditions, 10443 events. 6780/10443 cut-off events. For 295065/295065 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 63489 event pairs, 2229 based on Foata normal form. 1/10243 useless extension candidates. Maximal degree in co-relation 70084. Up to 9586 conditions per place. [2024-05-12 13:06:38,673 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 283 selfloop transitions, 13 changer transitions 0/304 dead transitions. [2024-05-12 13:06:38,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 304 transitions, 4099 flow [2024-05-12 13:06:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:06:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:06:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-05-12 13:06:38,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-05-12 13:06:38,676 INFO L175 Difference]: Start difference. First operand has 176 places, 276 transitions, 3295 flow. Second operand 6 states and 133 transitions. [2024-05-12 13:06:38,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 304 transitions, 4099 flow [2024-05-12 13:06:38,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 304 transitions, 4027 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-05-12 13:06:38,986 INFO L231 Difference]: Finished difference. Result has 179 places, 283 transitions, 3378 flow [2024-05-12 13:06:38,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3378, PETRI_PLACES=179, PETRI_TRANSITIONS=283} [2024-05-12 13:06:38,987 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 123 predicate places. [2024-05-12 13:06:38,987 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 283 transitions, 3378 flow [2024-05-12 13:06:38,987 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) [2024-05-12 13:06:38,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:38,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:06:38,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:06:38,988 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:06:38,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:38,988 INFO L85 PathProgramCache]: Analyzing trace with hash -447650036, now seen corresponding path program 2 times [2024-05-12 13:06:38,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:38,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889585037] [2024-05-12 13:06:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:38,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:40,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:40,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:40,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889585037] [2024-05-12 13:06:40,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889585037] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:40,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:40,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:06:40,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316690883] [2024-05-12 13:06:40,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:40,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:06:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:40,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:06:40,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:06:40,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2024-05-12 13:06:40,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 283 transitions, 3378 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) [2024-05-12 13:06:40,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:40,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2024-05-12 13:06:40,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:42,941 INFO L124 PetriNetUnfolderBase]: 6785/10448 cut-off events. [2024-05-12 13:06:42,941 INFO L125 PetriNetUnfolderBase]: For 306681/306681 co-relation queries the response was YES. [2024-05-12 13:06:43,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71483 conditions, 10448 events. 6785/10448 cut-off events. For 306681/306681 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 63505 event pairs, 2226 based on Foata normal form. 1/10247 useless extension candidates. Maximal degree in co-relation 71401. Up to 9599 conditions per place. [2024-05-12 13:06:43,055 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 287 selfloop transitions, 13 changer transitions 0/308 dead transitions. [2024-05-12 13:06:43,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 308 transitions, 4170 flow [2024-05-12 13:06:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:06:43,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:06:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-05-12 13:06:43,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-05-12 13:06:43,057 INFO L175 Difference]: Start difference. First operand has 179 places, 283 transitions, 3378 flow. Second operand 6 states and 130 transitions. [2024-05-12 13:06:43,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 308 transitions, 4170 flow [2024-05-12 13:06:43,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 308 transitions, 4117 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-05-12 13:06:43,349 INFO L231 Difference]: Finished difference. Result has 183 places, 290 transitions, 3468 flow [2024-05-12 13:06:43,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3325, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3468, PETRI_PLACES=183, PETRI_TRANSITIONS=290} [2024-05-12 13:06:43,349 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 127 predicate places. [2024-05-12 13:06:43,350 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 290 transitions, 3468 flow [2024-05-12 13:06:43,350 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) [2024-05-12 13:06:43,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:43,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:06:43,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:06:43,350 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:06:43,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash 256518688, now seen corresponding path program 1 times [2024-05-12 13:06:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044629085] [2024-05-12 13:06:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:43,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:45,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:45,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044629085] [2024-05-12 13:06:45,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044629085] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:45,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:45,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:06:45,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191313212] [2024-05-12 13:06:45,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:45,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:06:45,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:45,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:06:45,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:06:46,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:06:46,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 290 transitions, 3468 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:46,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:46,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:06:46,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:48,693 INFO L124 PetriNetUnfolderBase]: 7752/11966 cut-off events. [2024-05-12 13:06:48,693 INFO L125 PetriNetUnfolderBase]: For 384561/384561 co-relation queries the response was YES. [2024-05-12 13:06:48,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82863 conditions, 11966 events. 7752/11966 cut-off events. For 384561/384561 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 73077 event pairs, 2113 based on Foata normal form. 8/11647 useless extension candidates. Maximal degree in co-relation 82779. Up to 10682 conditions per place. [2024-05-12 13:06:49,008 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 291 selfloop transitions, 56 changer transitions 0/354 dead transitions. [2024-05-12 13:06:49,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 354 transitions, 4612 flow [2024-05-12 13:06:49,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:06:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:06:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-05-12 13:06:49,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711111111111111 [2024-05-12 13:06:49,010 INFO L175 Difference]: Start difference. First operand has 183 places, 290 transitions, 3468 flow. Second operand 9 states and 212 transitions. [2024-05-12 13:06:49,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 354 transitions, 4612 flow [2024-05-12 13:06:49,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 354 transitions, 4547 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-05-12 13:06:49,316 INFO L231 Difference]: Finished difference. Result has 191 places, 297 transitions, 3800 flow [2024-05-12 13:06:49,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3403, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3800, PETRI_PLACES=191, PETRI_TRANSITIONS=297} [2024-05-12 13:06:49,317 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 135 predicate places. [2024-05-12 13:06:49,317 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 297 transitions, 3800 flow [2024-05-12 13:06:49,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:49,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:49,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:06:49,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:06:49,318 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:06:49,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:49,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1061485072, now seen corresponding path program 2 times [2024-05-12 13:06:49,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:49,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334877773] [2024-05-12 13:06:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:49,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:52,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:52,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334877773] [2024-05-12 13:06:52,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334877773] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:52,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:52,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:06:52,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818748858] [2024-05-12 13:06:52,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:52,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:06:52,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:52,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:06:52,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:06:52,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:06:52,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 297 transitions, 3800 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:52,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:52,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:06:52,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:06:55,692 INFO L124 PetriNetUnfolderBase]: 7856/12109 cut-off events. [2024-05-12 13:06:55,692 INFO L125 PetriNetUnfolderBase]: For 422804/422804 co-relation queries the response was YES. [2024-05-12 13:06:55,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86354 conditions, 12109 events. 7856/12109 cut-off events. For 422804/422804 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 74129 event pairs, 2495 based on Foata normal form. 8/11793 useless extension candidates. Maximal degree in co-relation 86267. Up to 10682 conditions per place. [2024-05-12 13:06:55,812 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 289 selfloop transitions, 72 changer transitions 0/368 dead transitions. [2024-05-12 13:06:55,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 368 transitions, 5086 flow [2024-05-12 13:06:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:06:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:06:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-05-12 13:06:55,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-05-12 13:06:55,814 INFO L175 Difference]: Start difference. First operand has 191 places, 297 transitions, 3800 flow. Second operand 9 states and 213 transitions. [2024-05-12 13:06:55,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 368 transitions, 5086 flow [2024-05-12 13:06:56,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 368 transitions, 4801 flow, removed 115 selfloop flow, removed 4 redundant places. [2024-05-12 13:06:56,246 INFO L231 Difference]: Finished difference. Result has 198 places, 308 transitions, 4053 flow [2024-05-12 13:06:56,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4053, PETRI_PLACES=198, PETRI_TRANSITIONS=308} [2024-05-12 13:06:56,247 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 142 predicate places. [2024-05-12 13:06:56,247 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 308 transitions, 4053 flow [2024-05-12 13:06:56,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:56,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:06:56,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:06:56,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:06:56,247 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:06:56,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:06:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1144597312, now seen corresponding path program 3 times [2024-05-12 13:06:56,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:06:56,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877641180] [2024-05-12 13:06:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:06:56,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:06:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:06:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:06:59,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:06:59,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877641180] [2024-05-12 13:06:59,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877641180] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:06:59,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:06:59,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:06:59,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21028289] [2024-05-12 13:06:59,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:06:59,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:06:59,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:06:59,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:06:59,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:06:59,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:06:59,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 308 transitions, 4053 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:06:59,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:06:59,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:06:59,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:02,372 INFO L124 PetriNetUnfolderBase]: 7948/12281 cut-off events. [2024-05-12 13:07:02,372 INFO L125 PetriNetUnfolderBase]: For 452580/452580 co-relation queries the response was YES. [2024-05-12 13:07:02,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88618 conditions, 12281 events. 7948/12281 cut-off events. For 452580/452580 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 75643 event pairs, 2546 based on Foata normal form. 8/11953 useless extension candidates. Maximal degree in co-relation 88527. Up to 10959 conditions per place. [2024-05-12 13:07:02,522 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 302 selfloop transitions, 62 changer transitions 0/371 dead transitions. [2024-05-12 13:07:02,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 371 transitions, 5203 flow [2024-05-12 13:07:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:07:02,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:07:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-05-12 13:07:02,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-05-12 13:07:02,524 INFO L175 Difference]: Start difference. First operand has 198 places, 308 transitions, 4053 flow. Second operand 9 states and 213 transitions. [2024-05-12 13:07:02,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 371 transitions, 5203 flow [2024-05-12 13:07:03,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 371 transitions, 4940 flow, removed 118 selfloop flow, removed 3 redundant places. [2024-05-12 13:07:03,346 INFO L231 Difference]: Finished difference. Result has 205 places, 313 transitions, 4141 flow [2024-05-12 13:07:03,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3790, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4141, PETRI_PLACES=205, PETRI_TRANSITIONS=313} [2024-05-12 13:07:03,347 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 149 predicate places. [2024-05-12 13:07:03,347 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 313 transitions, 4141 flow [2024-05-12 13:07:03,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:03,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:03,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:07:03,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:07:03,347 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:07:03,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1149250536, now seen corresponding path program 1 times [2024-05-12 13:07:03,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:03,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450258692] [2024-05-12 13:07:03,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:03,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:07:06,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:06,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450258692] [2024-05-12 13:07:06,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450258692] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:06,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:06,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:07:06,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118648355] [2024-05-12 13:07:06,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:06,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:07:06,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:06,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:07:06,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:07:06,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:07:06,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 313 transitions, 4141 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:06,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:06,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:07:06,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:09,475 INFO L124 PetriNetUnfolderBase]: 8035/12393 cut-off events. [2024-05-12 13:07:09,475 INFO L125 PetriNetUnfolderBase]: For 470577/470577 co-relation queries the response was YES. [2024-05-12 13:07:09,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90154 conditions, 12393 events. 8035/12393 cut-off events. For 470577/470577 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 76255 event pairs, 2572 based on Foata normal form. 4/12064 useless extension candidates. Maximal degree in co-relation 90060. Up to 11072 conditions per place. [2024-05-12 13:07:09,614 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 321 selfloop transitions, 71 changer transitions 0/399 dead transitions. [2024-05-12 13:07:09,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 399 transitions, 5516 flow [2024-05-12 13:07:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:07:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:07:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-05-12 13:07:09,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.472 [2024-05-12 13:07:09,615 INFO L175 Difference]: Start difference. First operand has 205 places, 313 transitions, 4141 flow. Second operand 10 states and 236 transitions. [2024-05-12 13:07:09,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 399 transitions, 5516 flow [2024-05-12 13:07:10,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 399 transitions, 5255 flow, removed 94 selfloop flow, removed 5 redundant places. [2024-05-12 13:07:10,212 INFO L231 Difference]: Finished difference. Result has 214 places, 332 transitions, 4418 flow [2024-05-12 13:07:10,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3882, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4418, PETRI_PLACES=214, PETRI_TRANSITIONS=332} [2024-05-12 13:07:10,213 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 158 predicate places. [2024-05-12 13:07:10,213 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 332 transitions, 4418 flow [2024-05-12 13:07:10,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:10,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:10,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:07:10,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:07:10,214 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:07:10,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:10,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1407022141, now seen corresponding path program 1 times [2024-05-12 13:07:10,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:10,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620320273] [2024-05-12 13:07:10,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:10,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:07:12,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:12,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620320273] [2024-05-12 13:07:12,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620320273] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:12,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:12,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:07:12,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225194050] [2024-05-12 13:07:12,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:12,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:07:12,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:12,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:07:12,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:07:12,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:07:12,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 332 transitions, 4418 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:12,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:12,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:07:12,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:14,784 INFO L124 PetriNetUnfolderBase]: 8065/12319 cut-off events. [2024-05-12 13:07:14,785 INFO L125 PetriNetUnfolderBase]: For 479563/479563 co-relation queries the response was YES. [2024-05-12 13:07:14,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91711 conditions, 12319 events. 8065/12319 cut-off events. For 479563/479563 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 74831 event pairs, 2630 based on Foata normal form. 2/12026 useless extension candidates. Maximal degree in co-relation 91611. Up to 11325 conditions per place. [2024-05-12 13:07:14,944 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 341 selfloop transitions, 25 changer transitions 0/373 dead transitions. [2024-05-12 13:07:14,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 373 transitions, 5506 flow [2024-05-12 13:07:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:07:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:07:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-05-12 13:07:14,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-05-12 13:07:14,950 INFO L175 Difference]: Start difference. First operand has 214 places, 332 transitions, 4418 flow. Second operand 7 states and 155 transitions. [2024-05-12 13:07:14,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 373 transitions, 5506 flow [2024-05-12 13:07:15,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 373 transitions, 5347 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-05-12 13:07:15,661 INFO L231 Difference]: Finished difference. Result has 219 places, 341 transitions, 4578 flow [2024-05-12 13:07:15,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4265, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4578, PETRI_PLACES=219, PETRI_TRANSITIONS=341} [2024-05-12 13:07:15,662 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 163 predicate places. [2024-05-12 13:07:15,662 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 341 transitions, 4578 flow [2024-05-12 13:07:15,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:15,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:15,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:07:15,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:07:15,663 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:07:15,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:15,663 INFO L85 PathProgramCache]: Analyzing trace with hash 455835216, now seen corresponding path program 4 times [2024-05-12 13:07:15,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:15,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076637245] [2024-05-12 13:07:15,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:15,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:07:18,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:18,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076637245] [2024-05-12 13:07:18,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076637245] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:18,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:18,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:07:18,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105819489] [2024-05-12 13:07:18,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:18,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:07:18,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:18,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:07:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:07:18,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:07:18,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 341 transitions, 4578 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:18,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:18,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:07:18,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:21,768 INFO L124 PetriNetUnfolderBase]: 8149/12623 cut-off events. [2024-05-12 13:07:21,768 INFO L125 PetriNetUnfolderBase]: For 513137/513137 co-relation queries the response was YES. [2024-05-12 13:07:21,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93854 conditions, 12623 events. 8149/12623 cut-off events. For 513137/513137 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 78500 event pairs, 2540 based on Foata normal form. 8/12276 useless extension candidates. Maximal degree in co-relation 93751. Up to 11090 conditions per place. [2024-05-12 13:07:21,905 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 304 selfloop transitions, 94 changer transitions 0/405 dead transitions. [2024-05-12 13:07:21,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 405 transitions, 5791 flow [2024-05-12 13:07:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:07:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:07:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-05-12 13:07:21,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-05-12 13:07:21,907 INFO L175 Difference]: Start difference. First operand has 219 places, 341 transitions, 4578 flow. Second operand 9 states and 213 transitions. [2024-05-12 13:07:21,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 405 transitions, 5791 flow [2024-05-12 13:07:22,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 405 transitions, 5664 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-05-12 13:07:22,576 INFO L231 Difference]: Finished difference. Result has 225 places, 346 transitions, 4876 flow [2024-05-12 13:07:22,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4451, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4876, PETRI_PLACES=225, PETRI_TRANSITIONS=346} [2024-05-12 13:07:22,577 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 169 predicate places. [2024-05-12 13:07:22,577 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 346 transitions, 4876 flow [2024-05-12 13:07:22,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:22,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:22,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:07:22,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:07:22,577 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:07:22,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:22,578 INFO L85 PathProgramCache]: Analyzing trace with hash 455830566, now seen corresponding path program 5 times [2024-05-12 13:07:22,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:22,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768164753] [2024-05-12 13:07:22,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:22,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:07:25,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:25,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768164753] [2024-05-12 13:07:25,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768164753] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:25,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:25,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:07:25,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889229881] [2024-05-12 13:07:25,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:25,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:07:25,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:25,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:07:25,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:07:25,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:07:25,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 346 transitions, 4876 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:25,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:25,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:07:25,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:28,546 INFO L124 PetriNetUnfolderBase]: 8241/12789 cut-off events. [2024-05-12 13:07:28,546 INFO L125 PetriNetUnfolderBase]: For 555349/555349 co-relation queries the response was YES. [2024-05-12 13:07:28,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97017 conditions, 12789 events. 8241/12789 cut-off events. For 555349/555349 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 80043 event pairs, 2568 based on Foata normal form. 8/12432 useless extension candidates. Maximal degree in co-relation 96912. Up to 11280 conditions per place. [2024-05-12 13:07:28,706 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 308 selfloop transitions, 94 changer transitions 0/409 dead transitions. [2024-05-12 13:07:28,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 409 transitions, 6144 flow [2024-05-12 13:07:28,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:07:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:07:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-05-12 13:07:28,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688888888888889 [2024-05-12 13:07:28,708 INFO L175 Difference]: Start difference. First operand has 225 places, 346 transitions, 4876 flow. Second operand 9 states and 211 transitions. [2024-05-12 13:07:28,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 409 transitions, 6144 flow [2024-05-12 13:07:29,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 409 transitions, 5866 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-05-12 13:07:29,557 INFO L231 Difference]: Finished difference. Result has 230 places, 351 transitions, 5033 flow [2024-05-12 13:07:29,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4598, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5033, PETRI_PLACES=230, PETRI_TRANSITIONS=351} [2024-05-12 13:07:29,558 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 174 predicate places. [2024-05-12 13:07:29,558 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 351 transitions, 5033 flow [2024-05-12 13:07:29,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:29,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:29,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:07:29,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:07:29,559 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:07:29,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:29,559 INFO L85 PathProgramCache]: Analyzing trace with hash 462271250, now seen corresponding path program 2 times [2024-05-12 13:07:29,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:29,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941910324] [2024-05-12 13:07:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:29,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:07:32,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:32,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941910324] [2024-05-12 13:07:32,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941910324] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:32,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:32,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:07:32,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754634557] [2024-05-12 13:07:32,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:32,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:07:32,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:32,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:07:32,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:07:33,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:07:33,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 351 transitions, 5033 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:33,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:33,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:07:33,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:36,173 INFO L124 PetriNetUnfolderBase]: 8345/12729 cut-off events. [2024-05-12 13:07:36,173 INFO L125 PetriNetUnfolderBase]: For 574193/574193 co-relation queries the response was YES. [2024-05-12 13:07:36,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98301 conditions, 12729 events. 8345/12729 cut-off events. For 574193/574193 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 77660 event pairs, 2503 based on Foata normal form. 4/12436 useless extension candidates. Maximal degree in co-relation 98194. Up to 11448 conditions per place. [2024-05-12 13:07:36,354 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 371 selfloop transitions, 48 changer transitions 0/426 dead transitions. [2024-05-12 13:07:36,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 426 transitions, 6451 flow [2024-05-12 13:07:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:07:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:07:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2024-05-12 13:07:36,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468 [2024-05-12 13:07:36,356 INFO L175 Difference]: Start difference. First operand has 230 places, 351 transitions, 5033 flow. Second operand 10 states and 234 transitions. [2024-05-12 13:07:36,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 426 transitions, 6451 flow [2024-05-12 13:07:37,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 426 transitions, 6123 flow, removed 109 selfloop flow, removed 5 redundant places. [2024-05-12 13:07:37,103 INFO L231 Difference]: Finished difference. Result has 236 places, 360 transitions, 4935 flow [2024-05-12 13:07:37,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4935, PETRI_PLACES=236, PETRI_TRANSITIONS=360} [2024-05-12 13:07:37,103 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 180 predicate places. [2024-05-12 13:07:37,104 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 360 transitions, 4935 flow [2024-05-12 13:07:37,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:37,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:37,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:07:37,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:07:37,104 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:07:37,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash -102082846, now seen corresponding path program 3 times [2024-05-12 13:07:37,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:37,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347944958] [2024-05-12 13:07:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:07:40,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:40,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347944958] [2024-05-12 13:07:40,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347944958] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:40,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:40,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:07:40,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194633594] [2024-05-12 13:07:40,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:40,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:07:40,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:40,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:07:40,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:07:40,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:07:40,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 360 transitions, 4935 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:40,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:40,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:07:40,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:44,339 INFO L124 PetriNetUnfolderBase]: 8374/12931 cut-off events. [2024-05-12 13:07:44,339 INFO L125 PetriNetUnfolderBase]: For 576156/576156 co-relation queries the response was YES. [2024-05-12 13:07:44,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99067 conditions, 12931 events. 8374/12931 cut-off events. For 576156/576156 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 80279 event pairs, 2358 based on Foata normal form. 4/12584 useless extension candidates. Maximal degree in co-relation 98957. Up to 10786 conditions per place. [2024-05-12 13:07:44,494 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 309 selfloop transitions, 125 changer transitions 0/441 dead transitions. [2024-05-12 13:07:44,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 441 transitions, 6554 flow [2024-05-12 13:07:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:07:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:07:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-05-12 13:07:44,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.486 [2024-05-12 13:07:44,496 INFO L175 Difference]: Start difference. First operand has 236 places, 360 transitions, 4935 flow. Second operand 10 states and 243 transitions. [2024-05-12 13:07:44,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 441 transitions, 6554 flow [2024-05-12 13:07:45,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 441 transitions, 6408 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-05-12 13:07:45,226 INFO L231 Difference]: Finished difference. Result has 240 places, 368 transitions, 5219 flow [2024-05-12 13:07:45,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4789, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5219, PETRI_PLACES=240, PETRI_TRANSITIONS=368} [2024-05-12 13:07:45,226 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 184 predicate places. [2024-05-12 13:07:45,226 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 368 transitions, 5219 flow [2024-05-12 13:07:45,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:45,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:45,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:07:45,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:07:45,227 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:07:45,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:45,227 INFO L85 PathProgramCache]: Analyzing trace with hash 627581076, now seen corresponding path program 6 times [2024-05-12 13:07:45,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:45,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045758362] [2024-05-12 13:07:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:45,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:07:48,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:48,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045758362] [2024-05-12 13:07:48,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045758362] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:48,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:48,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:07:48,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121224412] [2024-05-12 13:07:48,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:48,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:07:48,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:48,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:07:48,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:07:48,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:07:48,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 368 transitions, 5219 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:48,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:48,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:07:48,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:07:51,753 INFO L124 PetriNetUnfolderBase]: 8648/13243 cut-off events. [2024-05-12 13:07:51,753 INFO L125 PetriNetUnfolderBase]: For 657822/657822 co-relation queries the response was YES. [2024-05-12 13:07:51,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105262 conditions, 13243 events. 8648/13243 cut-off events. For 657822/657822 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 81491 event pairs, 2589 based on Foata normal form. 28/12954 useless extension candidates. Maximal degree in co-relation 105150. Up to 11560 conditions per place. [2024-05-12 13:07:51,949 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 376 selfloop transitions, 50 changer transitions 0/433 dead transitions. [2024-05-12 13:07:51,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 433 transitions, 6695 flow [2024-05-12 13:07:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:07:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:07:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-05-12 13:07:51,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-05-12 13:07:51,951 INFO L175 Difference]: Start difference. First operand has 240 places, 368 transitions, 5219 flow. Second operand 9 states and 215 transitions. [2024-05-12 13:07:51,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 433 transitions, 6695 flow [2024-05-12 13:07:53,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 433 transitions, 6325 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-05-12 13:07:53,432 INFO L231 Difference]: Finished difference. Result has 242 places, 371 transitions, 5107 flow [2024-05-12 13:07:53,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4849, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5107, PETRI_PLACES=242, PETRI_TRANSITIONS=371} [2024-05-12 13:07:53,432 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 186 predicate places. [2024-05-12 13:07:53,432 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 371 transitions, 5107 flow [2024-05-12 13:07:53,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:53,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:07:53,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:07:53,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:07:53,433 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:07:53,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:07:53,433 INFO L85 PathProgramCache]: Analyzing trace with hash 627818660, now seen corresponding path program 4 times [2024-05-12 13:07:53,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:07:53,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167971246] [2024-05-12 13:07:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:07:53,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:07:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:07:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:07:56,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:07:56,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167971246] [2024-05-12 13:07:56,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167971246] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:07:56,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:07:56,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:07:56,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356083046] [2024-05-12 13:07:56,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:07:56,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:07:56,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:07:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:07:56,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:07:56,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:07:56,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 371 transitions, 5107 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:07:56,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:07:56,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:07:56,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:00,386 INFO L124 PetriNetUnfolderBase]: 8638/13286 cut-off events. [2024-05-12 13:08:00,387 INFO L125 PetriNetUnfolderBase]: For 663877/663877 co-relation queries the response was YES. [2024-05-12 13:08:00,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105375 conditions, 13286 events. 8638/13286 cut-off events. For 663877/663877 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 82526 event pairs, 2625 based on Foata normal form. 4/12954 useless extension candidates. Maximal degree in co-relation 105262. Up to 11894 conditions per place. [2024-05-12 13:08:00,553 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 381 selfloop transitions, 53 changer transitions 0/441 dead transitions. [2024-05-12 13:08:00,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 441 transitions, 6370 flow [2024-05-12 13:08:00,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:08:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:08:00,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 231 transitions. [2024-05-12 13:08:00,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462 [2024-05-12 13:08:00,555 INFO L175 Difference]: Start difference. First operand has 242 places, 371 transitions, 5107 flow. Second operand 10 states and 231 transitions. [2024-05-12 13:08:00,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 441 transitions, 6370 flow [2024-05-12 13:08:01,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 441 transitions, 6131 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-05-12 13:08:01,450 INFO L231 Difference]: Finished difference. Result has 247 places, 378 transitions, 5096 flow [2024-05-12 13:08:01,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4879, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5096, PETRI_PLACES=247, PETRI_TRANSITIONS=378} [2024-05-12 13:08:01,451 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 191 predicate places. [2024-05-12 13:08:01,451 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 378 transitions, 5096 flow [2024-05-12 13:08:01,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:01,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:01,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:01,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:08:01,452 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:08:01,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:01,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1484744192, now seen corresponding path program 1 times [2024-05-12 13:08:01,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:01,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407490979] [2024-05-12 13:08:01,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:01,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:04,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:04,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407490979] [2024-05-12 13:08:04,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407490979] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:04,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:04,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:08:04,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195817556] [2024-05-12 13:08:04,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:04,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:08:04,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:04,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:08:04,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:08:05,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:08:05,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 378 transitions, 5096 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:05,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:05,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:08:05,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:09,626 INFO L124 PetriNetUnfolderBase]: 8680/13420 cut-off events. [2024-05-12 13:08:09,627 INFO L125 PetriNetUnfolderBase]: For 646850/646850 co-relation queries the response was YES. [2024-05-12 13:08:09,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104853 conditions, 13420 events. 8680/13420 cut-off events. For 646850/646850 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 84037 event pairs, 2665 based on Foata normal form. 4/13064 useless extension candidates. Maximal degree in co-relation 104737. Up to 12166 conditions per place. [2024-05-12 13:08:09,790 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 396 selfloop transitions, 41 changer transitions 0/444 dead transitions. [2024-05-12 13:08:09,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 444 transitions, 6438 flow [2024-05-12 13:08:09,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:08:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:08:09,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 223 transitions. [2024-05-12 13:08:09,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446 [2024-05-12 13:08:09,792 INFO L175 Difference]: Start difference. First operand has 247 places, 378 transitions, 5096 flow. Second operand 10 states and 223 transitions. [2024-05-12 13:08:09,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 444 transitions, 6438 flow [2024-05-12 13:08:10,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 444 transitions, 6326 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-05-12 13:08:10,478 INFO L231 Difference]: Finished difference. Result has 252 places, 385 transitions, 5299 flow [2024-05-12 13:08:10,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4989, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5299, PETRI_PLACES=252, PETRI_TRANSITIONS=385} [2024-05-12 13:08:10,479 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 196 predicate places. [2024-05-12 13:08:10,479 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 385 transitions, 5299 flow [2024-05-12 13:08:10,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:10,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:10,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:10,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:08:10,480 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:08:10,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:10,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1406662696, now seen corresponding path program 1 times [2024-05-12 13:08:10,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:10,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696345385] [2024-05-12 13:08:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:10,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:13,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:13,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696345385] [2024-05-12 13:08:13,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696345385] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:13,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:13,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:13,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685786927] [2024-05-12 13:08:13,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:13,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:13,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:13,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:13,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:13,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:08:13,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 385 transitions, 5299 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:13,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:13,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:08:13,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:16,711 INFO L124 PetriNetUnfolderBase]: 8700/13369 cut-off events. [2024-05-12 13:08:16,712 INFO L125 PetriNetUnfolderBase]: For 676923/676923 co-relation queries the response was YES. [2024-05-12 13:08:16,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106325 conditions, 13369 events. 8700/13369 cut-off events. For 676923/676923 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 82836 event pairs, 2700 based on Foata normal form. 1/13036 useless extension candidates. Maximal degree in co-relation 106207. Up to 12298 conditions per place. [2024-05-12 13:08:16,859 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 390 selfloop transitions, 20 changer transitions 0/417 dead transitions. [2024-05-12 13:08:16,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 417 transitions, 6391 flow [2024-05-12 13:08:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:08:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:08:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-05-12 13:08:16,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-05-12 13:08:16,860 INFO L175 Difference]: Start difference. First operand has 252 places, 385 transitions, 5299 flow. Second operand 7 states and 150 transitions. [2024-05-12 13:08:16,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 417 transitions, 6391 flow [2024-05-12 13:08:17,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 417 transitions, 6121 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-05-12 13:08:17,608 INFO L231 Difference]: Finished difference. Result has 251 places, 388 transitions, 5129 flow [2024-05-12 13:08:17,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5029, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5129, PETRI_PLACES=251, PETRI_TRANSITIONS=388} [2024-05-12 13:08:17,608 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 195 predicate places. [2024-05-12 13:08:17,609 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 388 transitions, 5129 flow [2024-05-12 13:08:17,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:17,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:17,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:17,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:08:17,609 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:08:17,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:17,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1406663161, now seen corresponding path program 2 times [2024-05-12 13:08:17,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:17,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623515456] [2024-05-12 13:08:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:17,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:19,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:19,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623515456] [2024-05-12 13:08:19,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623515456] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:19,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:19,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:19,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417604056] [2024-05-12 13:08:19,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:19,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:19,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:19,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:19,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:19,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-05-12 13:08:19,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 388 transitions, 5129 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:19,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:19,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-05-12 13:08:19,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:23,139 INFO L124 PetriNetUnfolderBase]: 8730/13412 cut-off events. [2024-05-12 13:08:23,139 INFO L125 PetriNetUnfolderBase]: For 690438/690438 co-relation queries the response was YES. [2024-05-12 13:08:23,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106921 conditions, 13412 events. 8730/13412 cut-off events. For 690438/690438 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 83036 event pairs, 2689 based on Foata normal form. 2/13079 useless extension candidates. Maximal degree in co-relation 106803. Up to 12268 conditions per place. [2024-05-12 13:08:23,288 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 387 selfloop transitions, 31 changer transitions 0/425 dead transitions. [2024-05-12 13:08:23,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 425 transitions, 6296 flow [2024-05-12 13:08:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:08:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:08:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-05-12 13:08:23,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43714285714285717 [2024-05-12 13:08:23,290 INFO L175 Difference]: Start difference. First operand has 251 places, 388 transitions, 5129 flow. Second operand 7 states and 153 transitions. [2024-05-12 13:08:23,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 425 transitions, 6296 flow [2024-05-12 13:08:24,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 425 transitions, 6221 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-05-12 13:08:24,141 INFO L231 Difference]: Finished difference. Result has 254 places, 396 transitions, 5350 flow [2024-05-12 13:08:24,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5059, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5350, PETRI_PLACES=254, PETRI_TRANSITIONS=396} [2024-05-12 13:08:24,142 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 198 predicate places. [2024-05-12 13:08:24,142 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 396 transitions, 5350 flow [2024-05-12 13:08:24,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:24,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:24,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:24,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:08:24,142 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-05-12 13:08:24,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:24,143 INFO L85 PathProgramCache]: Analyzing trace with hash 597254130, now seen corresponding path program 7 times [2024-05-12 13:08:24,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:24,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536158111] [2024-05-12 13:08:24,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:24,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat