./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix053.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix053.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix053.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix053.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:35:15,597 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:35:15,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:35:15,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:35:15,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:35:15,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:35:15,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:35:15,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:35:15,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:35:15,687 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:35:15,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:35:15,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:35:15,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:35:15,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:35:15,690 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:35:15,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:35:15,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:35:15,690 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:35:15,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:35:15,690 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:35:15,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:35:15,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:35:15,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:35:15,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:35:15,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:35:15,691 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:35:15,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:35:15,692 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:35:15,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:35:15,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:35:15,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:35:15,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:35:15,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:35:15,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:35:15,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:35:15,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:35:15,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:35:15,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:35:15,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:35:15,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:35:15,694 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:35:15,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:35:15,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:35:15,695 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:35:15,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:35:15,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:35:15,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:35:15,876 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:35:15,878 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:35:15,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix053.opt.i [2024-06-28 03:35:16,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:35:17,132 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:35:17,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix053.opt.i [2024-06-28 03:35:17,150 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403acbb34/f7a4d1e6e4cd45e0826183ea8aace24f/FLAG22346025d [2024-06-28 03:35:17,161 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403acbb34/f7a4d1e6e4cd45e0826183ea8aace24f [2024-06-28 03:35:17,163 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:35:17,163 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:35:17,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix053.opt.yml/witness.yml [2024-06-28 03:35:17,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:35:17,302 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:35:17,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:35:17,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:35:17,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:35:17,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:35:17" (1/2) ... [2024-06-28 03:35:17,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5865d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:35:17, skipping insertion in model container [2024-06-28 03:35:17,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:35:17" (1/2) ... [2024-06-28 03:35:17,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@43d6d5bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:35:17, skipping insertion in model container [2024-06-28 03:35:17,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:35:17" (2/2) ... [2024-06-28 03:35:17,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5865d06 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17, skipping insertion in model container [2024-06-28 03:35:17,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:35:17" (2/2) ... [2024-06-28 03:35:17,309 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:35:17,386 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:35:17,387 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:35:17,387 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] ((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:35:17,387 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:35:17,388 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:35:17,388 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:35:17,388 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-28 03:35:17,423 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:35:17,714 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:35:17,721 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:35:17,833 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:35:17,896 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:35:17,897 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17 WrapperNode [2024-06-28 03:35:17,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:35:17,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:35:17,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:35:17,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:35:17,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (1/1) ... [2024-06-28 03:35:17,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (1/1) ... [2024-06-28 03:35:18,014 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-28 03:35:18,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:35:18,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:35:18,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:35:18,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:35:18,023 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (1/1) ... [2024-06-28 03:35:18,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (1/1) ... [2024-06-28 03:35:18,026 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (1/1) ... [2024-06-28 03:35:18,039 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:35:18,044 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (1/1) ... [2024-06-28 03:35:18,044 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (1/1) ... [2024-06-28 03:35:18,057 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (1/1) ... [2024-06-28 03:35:18,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (1/1) ... [2024-06-28 03:35:18,068 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (1/1) ... [2024-06-28 03:35:18,070 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (1/1) ... [2024-06-28 03:35:18,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:35:18,080 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:35:18,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:35:18,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:35:18,081 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (1/1) ... [2024-06-28 03:35:18,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:35:18,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:35:18,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:35:18,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:35:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:35:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:35:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:35:18,146 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:35:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:35:18,146 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:35:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:35:18,146 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:35:18,146 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:35:18,146 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:35:18,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:35:18,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:35:18,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:35:18,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:35:18,148 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:35:18,267 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:35:18,268 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:35:18,592 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:35:18,592 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:35:18,750 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:35:18,750 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:35:18,750 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:35:18 BoogieIcfgContainer [2024-06-28 03:35:18,750 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:35:18,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:35:18,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:35:18,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:35:18,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:35:17" (1/4) ... [2024-06-28 03:35:18,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1fa58a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:35:18, skipping insertion in model container [2024-06-28 03:35:18,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:35:17" (2/4) ... [2024-06-28 03:35:18,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1fa58a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:35:18, skipping insertion in model container [2024-06-28 03:35:18,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:35:17" (3/4) ... [2024-06-28 03:35:18,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1fa58a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:35:18, skipping insertion in model container [2024-06-28 03:35:18,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:35:18" (4/4) ... [2024-06-28 03:35:18,756 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053.opt.i [2024-06-28 03:35:18,769 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:35:18,770 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:35:18,770 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:35:18,806 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:35:18,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:35:18,859 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-28 03:35:18,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:35:18,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:35:18,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:35:18,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-28 03:35:18,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:35:18,874 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;@13bf7817, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:35:18,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:35:18,877 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:35:18,877 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:35:18,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:35:18,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:18,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:35:18,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:18,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:18,882 INFO L85 PathProgramCache]: Analyzing trace with hash 372441680, now seen corresponding path program 1 times [2024-06-28 03:35:18,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:18,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659498035] [2024-06-28 03:35:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:18,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:19,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:19,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659498035] [2024-06-28 03:35:19,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659498035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:19,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:19,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:35:19,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073759232] [2024-06-28 03:35:19,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:19,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:35:19,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:19,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:35:19,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:35:19,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 51 [2024-06-28 03:35:19,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:19,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:19,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 51 [2024-06-28 03:35:19,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:20,824 INFO L124 PetriNetUnfolderBase]: 6742/9590 cut-off events. [2024-06-28 03:35:20,825 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-06-28 03:35:20,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19142 conditions, 9590 events. 6742/9590 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 52856 event pairs, 5078 based on Foata normal form. 1/9336 useless extension candidates. Maximal degree in co-relation 19129. Up to 9223 conditions per place. [2024-06-28 03:35:20,878 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 41 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-28 03:35:20,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 223 flow [2024-06-28 03:35:20,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:35:20,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:35:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-28 03:35:20,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2024-06-28 03:35:20,889 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 98 transitions. [2024-06-28 03:35:20,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 223 flow [2024-06-28 03:35:20,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:20,896 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-28 03:35:20,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 03:35:20,902 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-28 03:35:20,903 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-28 03:35:20,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:20,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:20,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:20,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:35:20,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:20,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:20,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1435499765, now seen corresponding path program 1 times [2024-06-28 03:35:20,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:20,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096459025] [2024-06-28 03:35:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:20,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:21,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:21,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096459025] [2024-06-28 03:35:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096459025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:21,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:21,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:35:21,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118092853] [2024-06-28 03:35:21,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:21,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:35:21,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:21,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:35:21,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:35:21,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-06-28 03:35:21,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:21,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:21,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-06-28 03:35:21,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:22,546 INFO L124 PetriNetUnfolderBase]: 7882/10901 cut-off events. [2024-06-28 03:35:22,547 INFO L125 PetriNetUnfolderBase]: For 2113/2113 co-relation queries the response was YES. [2024-06-28 03:35:22,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24939 conditions, 10901 events. 7882/10901 cut-off events. For 2113/2113 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 58033 event pairs, 5323 based on Foata normal form. 4/10853 useless extension candidates. Maximal degree in co-relation 24927. Up to 10713 conditions per place. [2024-06-28 03:35:22,608 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 52 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-28 03:35:22,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 317 flow [2024-06-28 03:35:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:35:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:35:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-28 03:35:22,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2024-06-28 03:35:22,610 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 125 transitions. [2024-06-28 03:35:22,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 317 flow [2024-06-28 03:35:22,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:35:22,612 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-28 03:35:22,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-28 03:35:22,613 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-28 03:35:22,613 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-28 03:35:22,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:22,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:22,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:22,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:35:22,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:22,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:22,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1550820863, now seen corresponding path program 1 times [2024-06-28 03:35:22,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:22,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994486653] [2024-06-28 03:35:22,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:22,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:23,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:23,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:23,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994486653] [2024-06-28 03:35:23,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994486653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:23,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:23,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:35:23,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589711886] [2024-06-28 03:35:23,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:23,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:35:23,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:23,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:35:23,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:35:23,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-06-28 03:35:23,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:23,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:23,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-06-28 03:35:23,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:24,277 INFO L124 PetriNetUnfolderBase]: 7900/10989 cut-off events. [2024-06-28 03:35:24,277 INFO L125 PetriNetUnfolderBase]: For 6160/6160 co-relation queries the response was YES. [2024-06-28 03:35:24,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28019 conditions, 10989 events. 7900/10989 cut-off events. For 6160/6160 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 59132 event pairs, 4142 based on Foata normal form. 7/10978 useless extension candidates. Maximal degree in co-relation 28005. Up to 10634 conditions per place. [2024-06-28 03:35:24,326 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 70 selfloop transitions, 21 changer transitions 0/99 dead transitions. [2024-06-28 03:35:24,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 533 flow [2024-06-28 03:35:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:35:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:35:24,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-06-28 03:35:24,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6431372549019608 [2024-06-28 03:35:24,331 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 164 transitions. [2024-06-28 03:35:24,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 533 flow [2024-06-28 03:35:24,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 514 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:35:24,337 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 308 flow [2024-06-28 03:35:24,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-06-28 03:35:24,338 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-28 03:35:24,338 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 308 flow [2024-06-28 03:35:24,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:24,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:24,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:24,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:35:24,339 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:24,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:24,340 INFO L85 PathProgramCache]: Analyzing trace with hash -9414076, now seen corresponding path program 1 times [2024-06-28 03:35:24,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:24,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072377609] [2024-06-28 03:35:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:24,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:24,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:24,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072377609] [2024-06-28 03:35:24,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072377609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:24,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:24,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:35:24,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134879859] [2024-06-28 03:35:24,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:24,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:35:24,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:24,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:35:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:35:25,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-06-28 03:35:25,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:25,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:25,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-06-28 03:35:25,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:26,040 INFO L124 PetriNetUnfolderBase]: 7929/11036 cut-off events. [2024-06-28 03:35:26,040 INFO L125 PetriNetUnfolderBase]: For 14683/14688 co-relation queries the response was YES. [2024-06-28 03:35:26,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32942 conditions, 11036 events. 7929/11036 cut-off events. For 14683/14688 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 59549 event pairs, 3337 based on Foata normal form. 18/11036 useless extension candidates. Maximal degree in co-relation 32925. Up to 10599 conditions per place. [2024-06-28 03:35:26,108 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 77 selfloop transitions, 25 changer transitions 0/110 dead transitions. [2024-06-28 03:35:26,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 110 transitions, 678 flow [2024-06-28 03:35:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:26,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-06-28 03:35:26,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6209150326797386 [2024-06-28 03:35:26,110 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 308 flow. Second operand 6 states and 190 transitions. [2024-06-28 03:35:26,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 110 transitions, 678 flow [2024-06-28 03:35:26,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 110 transitions, 666 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 03:35:26,118 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 385 flow [2024-06-28 03:35:26,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=385, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-06-28 03:35:26,119 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2024-06-28 03:35:26,119 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 385 flow [2024-06-28 03:35:26,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:26,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:26,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:26,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:35:26,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:26,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:26,121 INFO L85 PathProgramCache]: Analyzing trace with hash -586491835, now seen corresponding path program 1 times [2024-06-28 03:35:26,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:26,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292950043] [2024-06-28 03:35:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:26,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:26,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292950043] [2024-06-28 03:35:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292950043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:26,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:26,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:35:26,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629281589] [2024-06-28 03:35:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:26,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:35:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:26,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:35:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:35:26,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:35:26,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:26,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:26,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:35:26,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:27,812 INFO L124 PetriNetUnfolderBase]: 6770/9678 cut-off events. [2024-06-28 03:35:27,812 INFO L125 PetriNetUnfolderBase]: For 18698/18698 co-relation queries the response was YES. [2024-06-28 03:35:27,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31444 conditions, 9678 events. 6770/9678 cut-off events. For 18698/18698 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 53991 event pairs, 3368 based on Foata normal form. 3/9620 useless extension candidates. Maximal degree in co-relation 31423. Up to 9250 conditions per place. [2024-06-28 03:35:27,871 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 65 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2024-06-28 03:35:27,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 83 transitions, 579 flow [2024-06-28 03:35:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:35:27,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:35:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-28 03:35:27,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-06-28 03:35:27,872 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 385 flow. Second operand 5 states and 130 transitions. [2024-06-28 03:35:27,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 83 transitions, 579 flow [2024-06-28 03:35:27,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 510 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:27,879 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 347 flow [2024-06-28 03:35:27,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-28 03:35:27,880 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-28 03:35:27,880 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 347 flow [2024-06-28 03:35:27,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:27,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:27,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:27,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:35:27,881 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:27,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:27,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1007863547, now seen corresponding path program 1 times [2024-06-28 03:35:27,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:27,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898707340] [2024-06-28 03:35:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:27,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:28,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:28,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898707340] [2024-06-28 03:35:28,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898707340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:28,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:28,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:35:28,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700269766] [2024-06-28 03:35:28,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:28,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:35:28,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:28,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:35:28,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:35:28,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:35:28,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 347 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:28,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:28,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:35:28,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:29,971 INFO L124 PetriNetUnfolderBase]: 6803/9900 cut-off events. [2024-06-28 03:35:29,972 INFO L125 PetriNetUnfolderBase]: For 21782/21782 co-relation queries the response was YES. [2024-06-28 03:35:29,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32154 conditions, 9900 events. 6803/9900 cut-off events. For 21782/21782 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 56210 event pairs, 3202 based on Foata normal form. 7/9897 useless extension candidates. Maximal degree in co-relation 32131. Up to 9164 conditions per place. [2024-06-28 03:35:30,045 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 81 selfloop transitions, 22 changer transitions 0/111 dead transitions. [2024-06-28 03:35:30,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 111 transitions, 753 flow [2024-06-28 03:35:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-28 03:35:30,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424836601307189 [2024-06-28 03:35:30,049 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 347 flow. Second operand 6 states and 166 transitions. [2024-06-28 03:35:30,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 111 transitions, 753 flow [2024-06-28 03:35:30,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 111 transitions, 724 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:30,059 INFO L231 Difference]: Finished difference. Result has 71 places, 80 transitions, 492 flow [2024-06-28 03:35:30,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=492, PETRI_PLACES=71, PETRI_TRANSITIONS=80} [2024-06-28 03:35:30,062 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-28 03:35:30,062 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 80 transitions, 492 flow [2024-06-28 03:35:30,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:30,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:30,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:30,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:35:30,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:30,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:30,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1184719806, now seen corresponding path program 1 times [2024-06-28 03:35:30,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:30,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295096002] [2024-06-28 03:35:30,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:30,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:30,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:30,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295096002] [2024-06-28 03:35:30,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295096002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:30,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:30,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:35:30,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759327455] [2024-06-28 03:35:30,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:30,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:35:30,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:30,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:35:30,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:35:30,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:30,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 80 transitions, 492 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:30,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:30,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:30,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:31,890 INFO L124 PetriNetUnfolderBase]: 7966/11091 cut-off events. [2024-06-28 03:35:31,890 INFO L125 PetriNetUnfolderBase]: For 39120/39130 co-relation queries the response was YES. [2024-06-28 03:35:31,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41355 conditions, 11091 events. 7966/11091 cut-off events. For 39120/39130 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 59496 event pairs, 3875 based on Foata normal form. 14/11093 useless extension candidates. Maximal degree in co-relation 41330. Up to 10721 conditions per place. [2024-06-28 03:35:31,977 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 82 selfloop transitions, 25 changer transitions 0/114 dead transitions. [2024-06-28 03:35:31,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 114 transitions, 849 flow [2024-06-28 03:35:31,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:31,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:31,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-28 03:35:31,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2024-06-28 03:35:31,978 INFO L175 Difference]: Start difference. First operand has 71 places, 80 transitions, 492 flow. Second operand 6 states and 160 transitions. [2024-06-28 03:35:31,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 114 transitions, 849 flow [2024-06-28 03:35:32,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 114 transitions, 825 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-28 03:35:32,002 INFO L231 Difference]: Finished difference. Result has 76 places, 84 transitions, 564 flow [2024-06-28 03:35:32,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=76, PETRI_TRANSITIONS=84} [2024-06-28 03:35:32,004 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-28 03:35:32,005 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 84 transitions, 564 flow [2024-06-28 03:35:32,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:32,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:32,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:32,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:35:32,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:32,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:32,006 INFO L85 PathProgramCache]: Analyzing trace with hash -977916636, now seen corresponding path program 2 times [2024-06-28 03:35:32,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:32,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151458453] [2024-06-28 03:35:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:32,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:32,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:32,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151458453] [2024-06-28 03:35:32,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151458453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:32,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:32,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:35:32,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241308387] [2024-06-28 03:35:32,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:32,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:35:32,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:32,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:35:32,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:35:32,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:32,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 84 transitions, 564 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:32,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:32,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:32,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:33,821 INFO L124 PetriNetUnfolderBase]: 7942/11043 cut-off events. [2024-06-28 03:35:33,822 INFO L125 PetriNetUnfolderBase]: For 43574/43574 co-relation queries the response was YES. [2024-06-28 03:35:33,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41698 conditions, 11043 events. 7942/11043 cut-off events. For 43574/43574 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 59047 event pairs, 3895 based on Foata normal form. 3/11029 useless extension candidates. Maximal degree in co-relation 41670. Up to 10691 conditions per place. [2024-06-28 03:35:33,892 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 75 selfloop transitions, 26 changer transitions 0/108 dead transitions. [2024-06-28 03:35:33,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 108 transitions, 828 flow [2024-06-28 03:35:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 03:35:33,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065359477124183 [2024-06-28 03:35:33,893 INFO L175 Difference]: Start difference. First operand has 76 places, 84 transitions, 564 flow. Second operand 6 states and 155 transitions. [2024-06-28 03:35:33,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 108 transitions, 828 flow [2024-06-28 03:35:33,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 785 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:33,918 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 584 flow [2024-06-28 03:35:33,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=584, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-28 03:35:33,919 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-28 03:35:33,919 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 584 flow [2024-06-28 03:35:33,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:33,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:33,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:33,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:35:33,920 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:33,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash -161430010, now seen corresponding path program 1 times [2024-06-28 03:35:33,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:33,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950253094] [2024-06-28 03:35:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:33,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:34,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:34,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950253094] [2024-06-28 03:35:34,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950253094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:34,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:34,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:34,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945941678] [2024-06-28 03:35:34,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:34,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:34,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:34,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:34,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:34,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:34,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 584 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:34,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:34,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:34,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:36,055 INFO L124 PetriNetUnfolderBase]: 8752/12216 cut-off events. [2024-06-28 03:35:36,055 INFO L125 PetriNetUnfolderBase]: For 56130/56134 co-relation queries the response was YES. [2024-06-28 03:35:36,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47340 conditions, 12216 events. 8752/12216 cut-off events. For 56130/56134 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 65899 event pairs, 3183 based on Foata normal form. 15/12217 useless extension candidates. Maximal degree in co-relation 47311. Up to 10613 conditions per place. [2024-06-28 03:35:36,129 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 126 selfloop transitions, 59 changer transitions 0/192 dead transitions. [2024-06-28 03:35:36,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 192 transitions, 1678 flow [2024-06-28 03:35:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:35:36,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:35:36,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-06-28 03:35:36,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571078431372549 [2024-06-28 03:35:36,131 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 584 flow. Second operand 8 states and 233 transitions. [2024-06-28 03:35:36,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 192 transitions, 1678 flow [2024-06-28 03:35:36,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 192 transitions, 1515 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:36,165 INFO L231 Difference]: Finished difference. Result has 84 places, 120 transitions, 935 flow [2024-06-28 03:35:36,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=935, PETRI_PLACES=84, PETRI_TRANSITIONS=120} [2024-06-28 03:35:36,181 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2024-06-28 03:35:36,181 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 120 transitions, 935 flow [2024-06-28 03:35:36,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:36,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:36,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:36,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:35:36,181 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:36,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:36,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1928392582, now seen corresponding path program 2 times [2024-06-28 03:35:36,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:36,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310792473] [2024-06-28 03:35:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:36,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:36,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:36,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:36,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310792473] [2024-06-28 03:35:36,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310792473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:36,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:36,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:36,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036353696] [2024-06-28 03:35:36,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:36,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:36,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:36,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:36,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:37,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:37,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 120 transitions, 935 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:37,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:37,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:37,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:38,582 INFO L124 PetriNetUnfolderBase]: 9368/13179 cut-off events. [2024-06-28 03:35:38,582 INFO L125 PetriNetUnfolderBase]: For 83908/83918 co-relation queries the response was YES. [2024-06-28 03:35:38,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58873 conditions, 13179 events. 9368/13179 cut-off events. For 83908/83918 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 72785 event pairs, 3460 based on Foata normal form. 31/13196 useless extension candidates. Maximal degree in co-relation 58840. Up to 11015 conditions per place. [2024-06-28 03:35:38,663 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 104 selfloop transitions, 81 changer transitions 0/192 dead transitions. [2024-06-28 03:35:38,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 192 transitions, 1817 flow [2024-06-28 03:35:38,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:38,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-06-28 03:35:38,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602240896358543 [2024-06-28 03:35:38,666 INFO L175 Difference]: Start difference. First operand has 84 places, 120 transitions, 935 flow. Second operand 7 states and 200 transitions. [2024-06-28 03:35:38,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 192 transitions, 1817 flow [2024-06-28 03:35:38,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 192 transitions, 1723 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-28 03:35:38,726 INFO L231 Difference]: Finished difference. Result has 91 places, 141 transitions, 1308 flow [2024-06-28 03:35:38,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1308, PETRI_PLACES=91, PETRI_TRANSITIONS=141} [2024-06-28 03:35:38,727 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2024-06-28 03:35:38,727 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 141 transitions, 1308 flow [2024-06-28 03:35:38,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:38,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:38,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:38,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:35:38,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:38,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:38,728 INFO L85 PathProgramCache]: Analyzing trace with hash -250406590, now seen corresponding path program 3 times [2024-06-28 03:35:38,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:38,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100619797] [2024-06-28 03:35:38,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:38,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:39,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:39,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:39,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100619797] [2024-06-28 03:35:39,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100619797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:39,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:39,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:39,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529183533] [2024-06-28 03:35:39,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:39,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:39,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:39,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:39,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:39,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:39,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 141 transitions, 1308 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:39,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:39,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:39,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:41,183 INFO L124 PetriNetUnfolderBase]: 9562/13465 cut-off events. [2024-06-28 03:35:41,184 INFO L125 PetriNetUnfolderBase]: For 111335/111353 co-relation queries the response was YES. [2024-06-28 03:35:41,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66379 conditions, 13465 events. 9562/13465 cut-off events. For 111335/111353 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 74515 event pairs, 3451 based on Foata normal form. 21/13456 useless extension candidates. Maximal degree in co-relation 66342. Up to 11127 conditions per place. [2024-06-28 03:35:41,299 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 101 selfloop transitions, 108 changer transitions 0/216 dead transitions. [2024-06-28 03:35:41,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 216 transitions, 2360 flow [2024-06-28 03:35:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:41,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-06-28 03:35:41,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574229691876751 [2024-06-28 03:35:41,301 INFO L175 Difference]: Start difference. First operand has 91 places, 141 transitions, 1308 flow. Second operand 7 states and 199 transitions. [2024-06-28 03:35:41,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 216 transitions, 2360 flow [2024-06-28 03:35:41,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 216 transitions, 2227 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:41,406 INFO L231 Difference]: Finished difference. Result has 97 places, 166 transitions, 1802 flow [2024-06-28 03:35:41,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1802, PETRI_PLACES=97, PETRI_TRANSITIONS=166} [2024-06-28 03:35:41,407 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-28 03:35:41,407 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 166 transitions, 1802 flow [2024-06-28 03:35:41,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:41,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:41,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:41,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:35:41,407 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:41,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:41,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2105524102, now seen corresponding path program 4 times [2024-06-28 03:35:41,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:41,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895602634] [2024-06-28 03:35:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:41,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:42,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:42,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895602634] [2024-06-28 03:35:42,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895602634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:42,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:42,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:42,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760327873] [2024-06-28 03:35:42,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:42,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:42,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:42,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:42,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:42,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 166 transitions, 1802 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:42,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:42,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:42,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:44,011 INFO L124 PetriNetUnfolderBase]: 9538/13436 cut-off events. [2024-06-28 03:35:44,012 INFO L125 PetriNetUnfolderBase]: For 139498/139510 co-relation queries the response was YES. [2024-06-28 03:35:44,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70798 conditions, 13436 events. 9538/13436 cut-off events. For 139498/139510 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 74300 event pairs, 3538 based on Foata normal form. 17/13424 useless extension candidates. Maximal degree in co-relation 70758. Up to 11120 conditions per place. [2024-06-28 03:35:44,294 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 107 selfloop transitions, 100 changer transitions 0/214 dead transitions. [2024-06-28 03:35:44,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 214 transitions, 2552 flow [2024-06-28 03:35:44,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:44,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-28 03:35:44,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518207282913166 [2024-06-28 03:35:44,296 INFO L175 Difference]: Start difference. First operand has 97 places, 166 transitions, 1802 flow. Second operand 7 states and 197 transitions. [2024-06-28 03:35:44,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 214 transitions, 2552 flow [2024-06-28 03:35:44,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 214 transitions, 2458 flow, removed 46 selfloop flow, removed 1 redundant places. [2024-06-28 03:35:44,406 INFO L231 Difference]: Finished difference. Result has 103 places, 166 transitions, 1928 flow [2024-06-28 03:35:44,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1928, PETRI_PLACES=103, PETRI_TRANSITIONS=166} [2024-06-28 03:35:44,407 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2024-06-28 03:35:44,407 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 166 transitions, 1928 flow [2024-06-28 03:35:44,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:44,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:44,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:44,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:35:44,407 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:44,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:44,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2105770180, now seen corresponding path program 1 times [2024-06-28 03:35:44,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:44,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048441085] [2024-06-28 03:35:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:44,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:45,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:45,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048441085] [2024-06-28 03:35:45,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048441085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:45,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:45,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:45,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058500181] [2024-06-28 03:35:45,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:45,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:45,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:45,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:35:45,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 166 transitions, 1928 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:45,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:45,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:35:45,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:46,668 INFO L124 PetriNetUnfolderBase]: 8534/12463 cut-off events. [2024-06-28 03:35:46,668 INFO L125 PetriNetUnfolderBase]: For 127378/127380 co-relation queries the response was YES. [2024-06-28 03:35:46,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64929 conditions, 12463 events. 8534/12463 cut-off events. For 127378/127380 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 72295 event pairs, 3099 based on Foata normal form. 26/12479 useless extension candidates. Maximal degree in co-relation 64886. Up to 11286 conditions per place. [2024-06-28 03:35:46,769 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 179 selfloop transitions, 25 changer transitions 0/212 dead transitions. [2024-06-28 03:35:46,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 212 transitions, 2602 flow [2024-06-28 03:35:46,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:46,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:46,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-28 03:35:46,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462184873949579 [2024-06-28 03:35:46,771 INFO L175 Difference]: Start difference. First operand has 103 places, 166 transitions, 1928 flow. Second operand 7 states and 195 transitions. [2024-06-28 03:35:46,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 212 transitions, 2602 flow [2024-06-28 03:35:46,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 212 transitions, 2371 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:35:46,897 INFO L231 Difference]: Finished difference. Result has 104 places, 169 transitions, 1804 flow [2024-06-28 03:35:46,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1804, PETRI_PLACES=104, PETRI_TRANSITIONS=169} [2024-06-28 03:35:46,898 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-28 03:35:46,898 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 169 transitions, 1804 flow [2024-06-28 03:35:46,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:46,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:46,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:46,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:35:46,899 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:46,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:46,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1721707586, now seen corresponding path program 1 times [2024-06-28 03:35:46,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:46,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343399501] [2024-06-28 03:35:46,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:46,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:47,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:47,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343399501] [2024-06-28 03:35:47,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343399501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:47,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:47,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:35:47,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672627390] [2024-06-28 03:35:47,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:47,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:35:47,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:47,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:35:47,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:35:47,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:35:47,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 169 transitions, 1804 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:47,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:47,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:35:47,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:48,773 INFO L124 PetriNetUnfolderBase]: 8520/12447 cut-off events. [2024-06-28 03:35:48,773 INFO L125 PetriNetUnfolderBase]: For 131390/131392 co-relation queries the response was YES. [2024-06-28 03:35:48,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64927 conditions, 12447 events. 8520/12447 cut-off events. For 131390/131392 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 72117 event pairs, 3221 based on Foata normal form. 4/12449 useless extension candidates. Maximal degree in co-relation 64884. Up to 11577 conditions per place. [2024-06-28 03:35:48,871 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 166 selfloop transitions, 10 changer transitions 0/184 dead transitions. [2024-06-28 03:35:48,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 184 transitions, 2202 flow [2024-06-28 03:35:48,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:35:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:35:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-28 03:35:48,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980392156862745 [2024-06-28 03:35:48,872 INFO L175 Difference]: Start difference. First operand has 104 places, 169 transitions, 1804 flow. Second operand 5 states and 127 transitions. [2024-06-28 03:35:48,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 184 transitions, 2202 flow [2024-06-28 03:35:48,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 184 transitions, 2119 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 03:35:48,987 INFO L231 Difference]: Finished difference. Result has 104 places, 169 transitions, 1750 flow [2024-06-28 03:35:48,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1750, PETRI_PLACES=104, PETRI_TRANSITIONS=169} [2024-06-28 03:35:48,988 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-28 03:35:48,988 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 169 transitions, 1750 flow [2024-06-28 03:35:48,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:48,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:48,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:48,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:35:48,988 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:48,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:48,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1955356944, now seen corresponding path program 1 times [2024-06-28 03:35:48,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:48,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023452687] [2024-06-28 03:35:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:48,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:49,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:49,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023452687] [2024-06-28 03:35:49,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023452687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:49,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:49,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:49,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709802455] [2024-06-28 03:35:49,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:49,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:49,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:49,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:49,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:49,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 169 transitions, 1750 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:49,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:49,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:49,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:51,470 INFO L124 PetriNetUnfolderBase]: 9798/13856 cut-off events. [2024-06-28 03:35:51,470 INFO L125 PetriNetUnfolderBase]: For 166205/166221 co-relation queries the response was YES. [2024-06-28 03:35:51,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73332 conditions, 13856 events. 9798/13856 cut-off events. For 166205/166221 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 77439 event pairs, 3598 based on Foata normal form. 27/13872 useless extension candidates. Maximal degree in co-relation 73288. Up to 11444 conditions per place. [2024-06-28 03:35:51,557 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 118 selfloop transitions, 112 changer transitions 0/237 dead transitions. [2024-06-28 03:35:51,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 237 transitions, 2804 flow [2024-06-28 03:35:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-06-28 03:35:51,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658263305322129 [2024-06-28 03:35:51,559 INFO L175 Difference]: Start difference. First operand has 104 places, 169 transitions, 1750 flow. Second operand 7 states and 202 transitions. [2024-06-28 03:35:51,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 237 transitions, 2804 flow [2024-06-28 03:35:51,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 237 transitions, 2771 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:51,661 INFO L231 Difference]: Finished difference. Result has 108 places, 185 transitions, 2213 flow [2024-06-28 03:35:51,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1717, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2213, PETRI_PLACES=108, PETRI_TRANSITIONS=185} [2024-06-28 03:35:51,661 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2024-06-28 03:35:51,661 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 185 transitions, 2213 flow [2024-06-28 03:35:51,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:51,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:51,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:51,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:35:51,662 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:51,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:51,662 INFO L85 PathProgramCache]: Analyzing trace with hash -349371384, now seen corresponding path program 2 times [2024-06-28 03:35:51,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:51,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781668265] [2024-06-28 03:35:51,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:51,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:52,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:52,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781668265] [2024-06-28 03:35:52,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781668265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:52,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:52,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:52,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001842411] [2024-06-28 03:35:52,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:52,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:52,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:52,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:52,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:52,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:52,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 185 transitions, 2213 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:52,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:52,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:52,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:54,041 INFO L124 PetriNetUnfolderBase]: 9920/14066 cut-off events. [2024-06-28 03:35:54,041 INFO L125 PetriNetUnfolderBase]: For 197033/197063 co-relation queries the response was YES. [2024-06-28 03:35:54,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78866 conditions, 14066 events. 9920/14066 cut-off events. For 197033/197063 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 79251 event pairs, 3524 based on Foata normal form. 39/14094 useless extension candidates. Maximal degree in co-relation 78821. Up to 11556 conditions per place. [2024-06-28 03:35:54,184 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 117 selfloop transitions, 117 changer transitions 0/241 dead transitions. [2024-06-28 03:35:54,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 241 transitions, 3139 flow [2024-06-28 03:35:54,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-28 03:35:54,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2024-06-28 03:35:54,186 INFO L175 Difference]: Start difference. First operand has 108 places, 185 transitions, 2213 flow. Second operand 7 states and 196 transitions. [2024-06-28 03:35:54,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 241 transitions, 3139 flow [2024-06-28 03:35:54,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 241 transitions, 2982 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 03:35:54,425 INFO L231 Difference]: Finished difference. Result has 112 places, 194 transitions, 2450 flow [2024-06-28 03:35:54,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2450, PETRI_PLACES=112, PETRI_TRANSITIONS=194} [2024-06-28 03:35:54,426 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-28 03:35:54,426 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 194 transitions, 2450 flow [2024-06-28 03:35:54,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:54,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:54,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:54,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:35:54,427 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:54,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:54,427 INFO L85 PathProgramCache]: Analyzing trace with hash 827331020, now seen corresponding path program 3 times [2024-06-28 03:35:54,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:54,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70169212] [2024-06-28 03:35:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:54,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:55,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:55,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70169212] [2024-06-28 03:35:55,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70169212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:55,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:55,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354383870] [2024-06-28 03:35:55,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:55,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:55,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:55,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:55,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:55,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:55,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 194 transitions, 2450 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:55,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:55,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:55,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:56,904 INFO L124 PetriNetUnfolderBase]: 9966/14121 cut-off events. [2024-06-28 03:35:56,904 INFO L125 PetriNetUnfolderBase]: For 223038/223134 co-relation queries the response was YES. [2024-06-28 03:35:56,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80933 conditions, 14121 events. 9966/14121 cut-off events. For 223038/223134 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 79545 event pairs, 3520 based on Foata normal form. 71/14131 useless extension candidates. Maximal degree in co-relation 80887. Up to 11604 conditions per place. [2024-06-28 03:35:57,042 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 113 selfloop transitions, 124 changer transitions 0/244 dead transitions. [2024-06-28 03:35:57,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 244 transitions, 3276 flow [2024-06-28 03:35:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:57,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-28 03:35:57,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322128851540616 [2024-06-28 03:35:57,044 INFO L175 Difference]: Start difference. First operand has 112 places, 194 transitions, 2450 flow. Second operand 7 states and 190 transitions. [2024-06-28 03:35:57,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 244 transitions, 3276 flow [2024-06-28 03:35:57,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 244 transitions, 3070 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 03:35:57,347 INFO L231 Difference]: Finished difference. Result has 115 places, 203 transitions, 2660 flow [2024-06-28 03:35:57,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2660, PETRI_PLACES=115, PETRI_TRANSITIONS=203} [2024-06-28 03:35:57,347 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-28 03:35:57,348 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 203 transitions, 2660 flow [2024-06-28 03:35:57,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:57,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:57,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:57,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:35:57,348 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:57,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:57,349 INFO L85 PathProgramCache]: Analyzing trace with hash 37077409, now seen corresponding path program 1 times [2024-06-28 03:35:57,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:57,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919585694] [2024-06-28 03:35:57,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:57,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:35:58,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:58,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919585694] [2024-06-28 03:35:58,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919585694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:58,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:58,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:35:58,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039433837] [2024-06-28 03:35:58,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:58,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:35:58,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:35:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:35:58,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:35:58,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 203 transitions, 2660 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:58,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:58,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:35:58,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:59,686 INFO L124 PetriNetUnfolderBase]: 10002/14184 cut-off events. [2024-06-28 03:35:59,686 INFO L125 PetriNetUnfolderBase]: For 245705/245741 co-relation queries the response was YES. [2024-06-28 03:35:59,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82706 conditions, 14184 events. 10002/14184 cut-off events. For 245705/245741 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 80102 event pairs, 2882 based on Foata normal form. 38/14219 useless extension candidates. Maximal degree in co-relation 82659. Up to 13166 conditions per place. [2024-06-28 03:35:59,823 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 201 selfloop transitions, 41 changer transitions 0/249 dead transitions. [2024-06-28 03:35:59,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 249 transitions, 3482 flow [2024-06-28 03:35:59,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:35:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:35:59,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 03:35:59,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154061624649859 [2024-06-28 03:35:59,825 INFO L175 Difference]: Start difference. First operand has 115 places, 203 transitions, 2660 flow. Second operand 7 states and 184 transitions. [2024-06-28 03:35:59,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 249 transitions, 3482 flow [2024-06-28 03:36:00,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 249 transitions, 3270 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:00,084 INFO L231 Difference]: Finished difference. Result has 118 places, 209 transitions, 2658 flow [2024-06-28 03:36:00,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2658, PETRI_PLACES=118, PETRI_TRANSITIONS=209} [2024-06-28 03:36:00,084 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-28 03:36:00,084 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 209 transitions, 2658 flow [2024-06-28 03:36:00,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:00,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:00,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:00,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:36:00,085 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:00,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:00,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1938920809, now seen corresponding path program 2 times [2024-06-28 03:36:00,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:00,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808485514] [2024-06-28 03:36:00,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:00,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:00,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:00,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808485514] [2024-06-28 03:36:00,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808485514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:00,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:00,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:36:00,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393411018] [2024-06-28 03:36:00,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:00,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:36:00,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:00,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:36:00,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:36:00,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:00,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 209 transitions, 2658 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:00,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:00,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:00,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:02,537 INFO L124 PetriNetUnfolderBase]: 9987/14142 cut-off events. [2024-06-28 03:36:02,538 INFO L125 PetriNetUnfolderBase]: For 267841/267861 co-relation queries the response was YES. [2024-06-28 03:36:02,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82983 conditions, 14142 events. 9987/14142 cut-off events. For 267841/267861 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 79330 event pairs, 3463 based on Foata normal form. 22/14157 useless extension candidates. Maximal degree in co-relation 82934. Up to 13281 conditions per place. [2024-06-28 03:36:02,645 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 200 selfloop transitions, 40 changer transitions 0/247 dead transitions. [2024-06-28 03:36:02,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 247 transitions, 3268 flow [2024-06-28 03:36:02,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:36:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:36:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 03:36:02,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070028011204482 [2024-06-28 03:36:02,657 INFO L175 Difference]: Start difference. First operand has 118 places, 209 transitions, 2658 flow. Second operand 7 states and 181 transitions. [2024-06-28 03:36:02,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 247 transitions, 3268 flow [2024-06-28 03:36:02,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 247 transitions, 3140 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:02,955 INFO L231 Difference]: Finished difference. Result has 122 places, 209 transitions, 2622 flow [2024-06-28 03:36:02,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2622, PETRI_PLACES=122, PETRI_TRANSITIONS=209} [2024-06-28 03:36:02,956 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-28 03:36:02,956 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 209 transitions, 2622 flow [2024-06-28 03:36:02,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:02,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:02,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:02,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:36:02,958 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:02,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash -518870003, now seen corresponding path program 1 times [2024-06-28 03:36:02,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:02,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027942382] [2024-06-28 03:36:02,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:02,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:03,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:03,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:03,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027942382] [2024-06-28 03:36:03,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027942382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:03,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:03,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:03,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979878253] [2024-06-28 03:36:03,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:03,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:03,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:03,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:03,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:03,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:03,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 209 transitions, 2622 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:03,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:03,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:03,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:05,886 INFO L124 PetriNetUnfolderBase]: 10795/15405 cut-off events. [2024-06-28 03:36:05,886 INFO L125 PetriNetUnfolderBase]: For 319850/319864 co-relation queries the response was YES. [2024-06-28 03:36:05,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89337 conditions, 15405 events. 10795/15405 cut-off events. For 319850/319864 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 89222 event pairs, 3407 based on Foata normal form. 127/15521 useless extension candidates. Maximal degree in co-relation 89286. Up to 11689 conditions per place. [2024-06-28 03:36:06,061 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 134 selfloop transitions, 132 changer transitions 0/273 dead transitions. [2024-06-28 03:36:06,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 273 transitions, 3638 flow [2024-06-28 03:36:06,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:06,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:06,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2024-06-28 03:36:06,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612745098039216 [2024-06-28 03:36:06,063 INFO L175 Difference]: Start difference. First operand has 122 places, 209 transitions, 2622 flow. Second operand 8 states and 229 transitions. [2024-06-28 03:36:06,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 273 transitions, 3638 flow [2024-06-28 03:36:06,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 273 transitions, 3546 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:06,611 INFO L231 Difference]: Finished difference. Result has 124 places, 212 transitions, 2878 flow [2024-06-28 03:36:06,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2878, PETRI_PLACES=124, PETRI_TRANSITIONS=212} [2024-06-28 03:36:06,611 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-28 03:36:06,612 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 212 transitions, 2878 flow [2024-06-28 03:36:06,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:06,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:06,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:06,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:36:06,612 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:06,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:06,613 INFO L85 PathProgramCache]: Analyzing trace with hash 605115235, now seen corresponding path program 1 times [2024-06-28 03:36:06,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:06,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680106999] [2024-06-28 03:36:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:06,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:07,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:07,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680106999] [2024-06-28 03:36:07,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680106999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:07,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:07,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:36:07,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704898485] [2024-06-28 03:36:07,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:07,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:36:07,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:07,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:36:07,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:36:07,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:07,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 212 transitions, 2878 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:07,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:07,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:07,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:09,329 INFO L124 PetriNetUnfolderBase]: 10841/15405 cut-off events. [2024-06-28 03:36:09,329 INFO L125 PetriNetUnfolderBase]: For 334093/334103 co-relation queries the response was YES. [2024-06-28 03:36:09,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94030 conditions, 15405 events. 10841/15405 cut-off events. For 334093/334103 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 88184 event pairs, 3692 based on Foata normal form. 18/15418 useless extension candidates. Maximal degree in co-relation 93978. Up to 14681 conditions per place. [2024-06-28 03:36:09,492 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 215 selfloop transitions, 29 changer transitions 0/251 dead transitions. [2024-06-28 03:36:09,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 251 transitions, 3687 flow [2024-06-28 03:36:09,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:36:09,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:36:09,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 03:36:09,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-06-28 03:36:09,496 INFO L175 Difference]: Start difference. First operand has 124 places, 212 transitions, 2878 flow. Second operand 6 states and 156 transitions. [2024-06-28 03:36:09,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 251 transitions, 3687 flow [2024-06-28 03:36:10,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 251 transitions, 3377 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:10,027 INFO L231 Difference]: Finished difference. Result has 124 places, 219 transitions, 2773 flow [2024-06-28 03:36:10,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2773, PETRI_PLACES=124, PETRI_TRANSITIONS=219} [2024-06-28 03:36:10,028 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 70 predicate places. [2024-06-28 03:36:10,028 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 219 transitions, 2773 flow [2024-06-28 03:36:10,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:10,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:10,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:10,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:36:10,028 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:10,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:10,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1869705783, now seen corresponding path program 2 times [2024-06-28 03:36:10,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:10,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776831860] [2024-06-28 03:36:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:10,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:10,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:10,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776831860] [2024-06-28 03:36:10,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776831860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:10,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:10,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:10,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302738071] [2024-06-28 03:36:10,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:10,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:10,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:10,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:10,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:10,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:10,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 219 transitions, 2773 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:10,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:10,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:10,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:12,901 INFO L124 PetriNetUnfolderBase]: 11038/15730 cut-off events. [2024-06-28 03:36:12,901 INFO L125 PetriNetUnfolderBase]: For 347023/347045 co-relation queries the response was YES. [2024-06-28 03:36:12,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92949 conditions, 15730 events. 11038/15730 cut-off events. For 347023/347045 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 90911 event pairs, 3440 based on Foata normal form. 38/15728 useless extension candidates. Maximal degree in co-relation 92896. Up to 12932 conditions per place. [2024-06-28 03:36:13,066 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 124 selfloop transitions, 147 changer transitions 0/278 dead transitions. [2024-06-28 03:36:13,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 278 transitions, 3735 flow [2024-06-28 03:36:13,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:13,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-28 03:36:13,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5465686274509803 [2024-06-28 03:36:13,068 INFO L175 Difference]: Start difference. First operand has 124 places, 219 transitions, 2773 flow. Second operand 8 states and 223 transitions. [2024-06-28 03:36:13,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 278 transitions, 3735 flow [2024-06-28 03:36:13,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 278 transitions, 3407 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:13,538 INFO L231 Difference]: Finished difference. Result has 126 places, 222 transitions, 2824 flow [2024-06-28 03:36:13,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2824, PETRI_PLACES=126, PETRI_TRANSITIONS=222} [2024-06-28 03:36:13,539 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 72 predicate places. [2024-06-28 03:36:13,539 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 222 transitions, 2824 flow [2024-06-28 03:36:13,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:13,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:13,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:13,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:36:13,540 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:13,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash 479095557, now seen corresponding path program 3 times [2024-06-28 03:36:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:13,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823808504] [2024-06-28 03:36:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:14,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:14,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823808504] [2024-06-28 03:36:14,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823808504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:14,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:14,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:14,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365187883] [2024-06-28 03:36:14,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:14,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:14,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:14,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:14,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:14,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:14,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 222 transitions, 2824 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:14,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:14,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:14,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:16,728 INFO L124 PetriNetUnfolderBase]: 11235/16010 cut-off events. [2024-06-28 03:36:16,729 INFO L125 PetriNetUnfolderBase]: For 374034/374050 co-relation queries the response was YES. [2024-06-28 03:36:16,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98207 conditions, 16010 events. 11235/16010 cut-off events. For 374034/374050 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 92747 event pairs, 3539 based on Foata normal form. 30/15999 useless extension candidates. Maximal degree in co-relation 98154. Up to 13203 conditions per place. [2024-06-28 03:36:16,910 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 136 selfloop transitions, 139 changer transitions 0/282 dead transitions. [2024-06-28 03:36:16,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 282 transitions, 3896 flow [2024-06-28 03:36:16,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:16,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-06-28 03:36:16,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2024-06-28 03:36:16,919 INFO L175 Difference]: Start difference. First operand has 126 places, 222 transitions, 2824 flow. Second operand 8 states and 224 transitions. [2024-06-28 03:36:16,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 282 transitions, 3896 flow [2024-06-28 03:36:17,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 282 transitions, 3553 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:17,345 INFO L231 Difference]: Finished difference. Result has 128 places, 225 transitions, 2850 flow [2024-06-28 03:36:17,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2850, PETRI_PLACES=128, PETRI_TRANSITIONS=225} [2024-06-28 03:36:17,345 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-28 03:36:17,345 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 225 transitions, 2850 flow [2024-06-28 03:36:17,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:17,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:17,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:17,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:36:17,346 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:17,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:17,346 INFO L85 PathProgramCache]: Analyzing trace with hash 715567587, now seen corresponding path program 4 times [2024-06-28 03:36:17,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:17,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052602273] [2024-06-28 03:36:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:17,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:18,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:18,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052602273] [2024-06-28 03:36:18,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052602273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:18,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:18,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:18,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250449839] [2024-06-28 03:36:18,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:18,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:18,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:18,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:18,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:18,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 225 transitions, 2850 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:18,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:18,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:18,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:20,301 INFO L124 PetriNetUnfolderBase]: 11381/16226 cut-off events. [2024-06-28 03:36:20,301 INFO L125 PetriNetUnfolderBase]: For 404435/404459 co-relation queries the response was YES. [2024-06-28 03:36:20,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100586 conditions, 16226 events. 11381/16226 cut-off events. For 404435/404459 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 94313 event pairs, 3142 based on Foata normal form. 38/16223 useless extension candidates. Maximal degree in co-relation 100532. Up to 11653 conditions per place. [2024-06-28 03:36:20,487 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 124 selfloop transitions, 158 changer transitions 0/289 dead transitions. [2024-06-28 03:36:20,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 289 transitions, 3878 flow [2024-06-28 03:36:20,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 228 transitions. [2024-06-28 03:36:20,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-06-28 03:36:20,489 INFO L175 Difference]: Start difference. First operand has 128 places, 225 transitions, 2850 flow. Second operand 8 states and 228 transitions. [2024-06-28 03:36:20,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 289 transitions, 3878 flow [2024-06-28 03:36:21,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 289 transitions, 3545 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:21,163 INFO L231 Difference]: Finished difference. Result has 130 places, 228 transitions, 2927 flow [2024-06-28 03:36:21,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2927, PETRI_PLACES=130, PETRI_TRANSITIONS=228} [2024-06-28 03:36:21,163 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-28 03:36:21,164 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 228 transitions, 2927 flow [2024-06-28 03:36:21,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:21,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:21,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:21,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:36:21,165 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:21,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:21,166 INFO L85 PathProgramCache]: Analyzing trace with hash 998630049, now seen corresponding path program 2 times [2024-06-28 03:36:21,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:21,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970332397] [2024-06-28 03:36:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:21,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:21,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:21,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970332397] [2024-06-28 03:36:21,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970332397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:21,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:21,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:36:21,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748342315] [2024-06-28 03:36:21,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:21,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:36:21,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:36:21,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:36:21,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:21,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 228 transitions, 2927 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:21,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:21,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:21,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:23,964 INFO L124 PetriNetUnfolderBase]: 11359/16208 cut-off events. [2024-06-28 03:36:23,964 INFO L125 PetriNetUnfolderBase]: For 421316/421344 co-relation queries the response was YES. [2024-06-28 03:36:24,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102316 conditions, 16208 events. 11359/16208 cut-off events. For 421316/421344 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 94510 event pairs, 3812 based on Foata normal form. 26/16228 useless extension candidates. Maximal degree in co-relation 102261. Up to 15438 conditions per place. [2024-06-28 03:36:24,119 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 216 selfloop transitions, 29 changer transitions 0/252 dead transitions. [2024-06-28 03:36:24,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 252 transitions, 3503 flow [2024-06-28 03:36:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:36:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:36:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 03:36:24,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2024-06-28 03:36:24,120 INFO L175 Difference]: Start difference. First operand has 130 places, 228 transitions, 2927 flow. Second operand 6 states and 147 transitions. [2024-06-28 03:36:24,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 252 transitions, 3503 flow [2024-06-28 03:36:24,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 252 transitions, 3099 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:24,519 INFO L231 Difference]: Finished difference. Result has 130 places, 228 transitions, 2593 flow [2024-06-28 03:36:24,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2523, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2593, PETRI_PLACES=130, PETRI_TRANSITIONS=228} [2024-06-28 03:36:24,520 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-28 03:36:24,520 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 228 transitions, 2593 flow [2024-06-28 03:36:24,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:24,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:24,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:24,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:36:24,520 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:24,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash 162646911, now seen corresponding path program 1 times [2024-06-28 03:36:24,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:24,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143240016] [2024-06-28 03:36:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:24,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:25,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143240016] [2024-06-28 03:36:25,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143240016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:25,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:25,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:36:25,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041608198] [2024-06-28 03:36:25,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:25,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:36:25,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:25,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:36:25,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:36:25,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:36:25,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 228 transitions, 2593 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:25,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:25,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:36:25,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:27,357 INFO L124 PetriNetUnfolderBase]: 10227/14957 cut-off events. [2024-06-28 03:36:27,358 INFO L125 PetriNetUnfolderBase]: For 364450/364452 co-relation queries the response was YES. [2024-06-28 03:36:27,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89705 conditions, 14957 events. 10227/14957 cut-off events. For 364450/364452 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 89776 event pairs, 3356 based on Foata normal form. 8/14956 useless extension candidates. Maximal degree in co-relation 89649. Up to 13898 conditions per place. [2024-06-28 03:36:27,510 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 225 selfloop transitions, 25 changer transitions 0/258 dead transitions. [2024-06-28 03:36:27,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 258 transitions, 3321 flow [2024-06-28 03:36:27,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:36:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:36:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-28 03:36:27,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2024-06-28 03:36:27,511 INFO L175 Difference]: Start difference. First operand has 130 places, 228 transitions, 2593 flow. Second operand 6 states and 160 transitions. [2024-06-28 03:36:27,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 258 transitions, 3321 flow [2024-06-28 03:36:27,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 258 transitions, 3240 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:27,987 INFO L231 Difference]: Finished difference. Result has 131 places, 232 transitions, 2627 flow [2024-06-28 03:36:27,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2512, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2627, PETRI_PLACES=131, PETRI_TRANSITIONS=232} [2024-06-28 03:36:27,988 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-06-28 03:36:27,988 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 232 transitions, 2627 flow [2024-06-28 03:36:27,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:27,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:27,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:27,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:36:27,989 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:27,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:27,989 INFO L85 PathProgramCache]: Analyzing trace with hash 998636001, now seen corresponding path program 2 times [2024-06-28 03:36:27,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:27,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619739005] [2024-06-28 03:36:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:27,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:28,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:28,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619739005] [2024-06-28 03:36:28,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619739005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:28,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:28,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:36:28,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708743121] [2024-06-28 03:36:28,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:28,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:36:28,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:28,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:36:28,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:36:28,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:36:28,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 232 transitions, 2627 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:28,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:28,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:36:28,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:30,704 INFO L124 PetriNetUnfolderBase]: 10075/14685 cut-off events. [2024-06-28 03:36:30,704 INFO L125 PetriNetUnfolderBase]: For 378883/378889 co-relation queries the response was YES. [2024-06-28 03:36:30,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89355 conditions, 14685 events. 10075/14685 cut-off events. For 378883/378889 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 87209 event pairs, 3276 based on Foata normal form. 5/14681 useless extension candidates. Maximal degree in co-relation 89298. Up to 13682 conditions per place. [2024-06-28 03:36:30,851 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 219 selfloop transitions, 26 changer transitions 0/253 dead transitions. [2024-06-28 03:36:30,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 253 transitions, 3179 flow [2024-06-28 03:36:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:36:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:36:30,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 03:36:30,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-06-28 03:36:30,852 INFO L175 Difference]: Start difference. First operand has 131 places, 232 transitions, 2627 flow. Second operand 6 states and 156 transitions. [2024-06-28 03:36:30,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 253 transitions, 3179 flow [2024-06-28 03:36:31,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 253 transitions, 3124 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:31,211 INFO L231 Difference]: Finished difference. Result has 134 places, 232 transitions, 2633 flow [2024-06-28 03:36:31,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2633, PETRI_PLACES=134, PETRI_TRANSITIONS=232} [2024-06-28 03:36:31,211 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 80 predicate places. [2024-06-28 03:36:31,211 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 232 transitions, 2633 flow [2024-06-28 03:36:31,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:31,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:31,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:31,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:36:31,212 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:31,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash -111561921, now seen corresponding path program 1 times [2024-06-28 03:36:31,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:31,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592553080] [2024-06-28 03:36:31,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:31,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:32,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:32,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592553080] [2024-06-28 03:36:32,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592553080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:32,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:32,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:32,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029089627] [2024-06-28 03:36:32,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:32,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:32,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:32,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:32,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:32,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:32,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 232 transitions, 2633 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:32,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:32,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:32,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:34,625 INFO L124 PetriNetUnfolderBase]: 13480/19548 cut-off events. [2024-06-28 03:36:34,625 INFO L125 PetriNetUnfolderBase]: For 616772/616778 co-relation queries the response was YES. [2024-06-28 03:36:34,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122623 conditions, 19548 events. 13480/19548 cut-off events. For 616772/616778 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 121717 event pairs, 3452 based on Foata normal form. 91/19626 useless extension candidates. Maximal degree in co-relation 122565. Up to 10646 conditions per place. [2024-06-28 03:36:34,865 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 174 selfloop transitions, 132 changer transitions 0/313 dead transitions. [2024-06-28 03:36:34,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 313 transitions, 4093 flow [2024-06-28 03:36:34,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:34,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 238 transitions. [2024-06-28 03:36:34,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 03:36:34,867 INFO L175 Difference]: Start difference. First operand has 134 places, 232 transitions, 2633 flow. Second operand 8 states and 238 transitions. [2024-06-28 03:36:34,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 313 transitions, 4093 flow [2024-06-28 03:36:35,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 313 transitions, 4001 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:36:35,491 INFO L231 Difference]: Finished difference. Result has 137 places, 240 transitions, 3095 flow [2024-06-28 03:36:35,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3095, PETRI_PLACES=137, PETRI_TRANSITIONS=240} [2024-06-28 03:36:35,492 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-28 03:36:35,492 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 240 transitions, 3095 flow [2024-06-28 03:36:35,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:35,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:35,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:35,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:36:35,493 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:35,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:35,493 INFO L85 PathProgramCache]: Analyzing trace with hash -22996161, now seen corresponding path program 2 times [2024-06-28 03:36:35,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:35,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642065744] [2024-06-28 03:36:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:35,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:36,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:36,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642065744] [2024-06-28 03:36:36,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642065744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:36,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:36,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:36,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638017197] [2024-06-28 03:36:36,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:36,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:36,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:36,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:36,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:36,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:36,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 240 transitions, 3095 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:36,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:36,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:36,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:39,624 INFO L124 PetriNetUnfolderBase]: 15028/21971 cut-off events. [2024-06-28 03:36:39,624 INFO L125 PetriNetUnfolderBase]: For 766571/766577 co-relation queries the response was YES. [2024-06-28 03:36:39,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145313 conditions, 21971 events. 15028/21971 cut-off events. For 766571/766577 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 142123 event pairs, 4836 based on Foata normal form. 91/22048 useless extension candidates. Maximal degree in co-relation 145253. Up to 15581 conditions per place. [2024-06-28 03:36:40,036 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 162 selfloop transitions, 142 changer transitions 0/311 dead transitions. [2024-06-28 03:36:40,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 311 transitions, 4409 flow [2024-06-28 03:36:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:40,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-06-28 03:36:40,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571078431372549 [2024-06-28 03:36:40,038 INFO L175 Difference]: Start difference. First operand has 137 places, 240 transitions, 3095 flow. Second operand 8 states and 233 transitions. [2024-06-28 03:36:40,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 311 transitions, 4409 flow [2024-06-28 03:36:40,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 311 transitions, 4200 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:40,950 INFO L231 Difference]: Finished difference. Result has 143 places, 246 transitions, 3380 flow [2024-06-28 03:36:40,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3380, PETRI_PLACES=143, PETRI_TRANSITIONS=246} [2024-06-28 03:36:40,953 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-28 03:36:40,953 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 246 transitions, 3380 flow [2024-06-28 03:36:40,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:40,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:40,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:40,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:36:40,954 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:40,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:40,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1917358073, now seen corresponding path program 1 times [2024-06-28 03:36:40,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:40,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122530732] [2024-06-28 03:36:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:40,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:41,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:41,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122530732] [2024-06-28 03:36:41,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122530732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:41,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:41,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:36:41,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158418039] [2024-06-28 03:36:41,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:41,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:36:41,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:41,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:36:41,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:36:41,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:41,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 246 transitions, 3380 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:41,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:41,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:41,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:45,377 INFO L124 PetriNetUnfolderBase]: 15220/22351 cut-off events. [2024-06-28 03:36:45,378 INFO L125 PetriNetUnfolderBase]: For 803066/803088 co-relation queries the response was YES. [2024-06-28 03:36:45,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151241 conditions, 22351 events. 15220/22351 cut-off events. For 803066/803088 co-relation queries the response was YES. Maximal size of possible extension queue 947. Compared 145801 event pairs, 5125 based on Foata normal form. 43/22380 useless extension candidates. Maximal degree in co-relation 151178. Up to 19055 conditions per place. [2024-06-28 03:36:45,725 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 146 selfloop transitions, 148 changer transitions 0/301 dead transitions. [2024-06-28 03:36:45,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 301 transitions, 4534 flow [2024-06-28 03:36:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:36:45,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:36:45,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-28 03:36:45,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2024-06-28 03:36:45,727 INFO L175 Difference]: Start difference. First operand has 143 places, 246 transitions, 3380 flow. Second operand 7 states and 196 transitions. [2024-06-28 03:36:45,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 301 transitions, 4534 flow [2024-06-28 03:36:46,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 301 transitions, 4158 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:46,685 INFO L231 Difference]: Finished difference. Result has 145 places, 257 transitions, 3515 flow [2024-06-28 03:36:46,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3024, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3515, PETRI_PLACES=145, PETRI_TRANSITIONS=257} [2024-06-28 03:36:46,685 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 91 predicate places. [2024-06-28 03:36:46,686 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 257 transitions, 3515 flow [2024-06-28 03:36:46,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:46,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:46,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:46,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:36:46,686 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:46,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:46,687 INFO L85 PathProgramCache]: Analyzing trace with hash -743937187, now seen corresponding path program 3 times [2024-06-28 03:36:46,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:46,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784060026] [2024-06-28 03:36:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:46,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:47,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:47,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784060026] [2024-06-28 03:36:47,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784060026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:47,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:47,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:47,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069008575] [2024-06-28 03:36:47,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:47,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:47,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:47,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:47,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 257 transitions, 3515 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:47,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:47,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:47,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:51,499 INFO L124 PetriNetUnfolderBase]: 16535/24432 cut-off events. [2024-06-28 03:36:51,499 INFO L125 PetriNetUnfolderBase]: For 909993/910015 co-relation queries the response was YES. [2024-06-28 03:36:51,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163412 conditions, 24432 events. 16535/24432 cut-off events. For 909993/910015 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 163378 event pairs, 4821 based on Foata normal form. 97/24515 useless extension candidates. Maximal degree in co-relation 163348. Up to 18361 conditions per place. [2024-06-28 03:36:51,782 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 174 selfloop transitions, 151 changer transitions 0/332 dead transitions. [2024-06-28 03:36:51,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 332 transitions, 4973 flow [2024-06-28 03:36:51,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:51,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 236 transitions. [2024-06-28 03:36:51,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2024-06-28 03:36:51,784 INFO L175 Difference]: Start difference. First operand has 145 places, 257 transitions, 3515 flow. Second operand 8 states and 236 transitions. [2024-06-28 03:36:51,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 332 transitions, 4973 flow [2024-06-28 03:36:52,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 332 transitions, 4710 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:52,509 INFO L231 Difference]: Finished difference. Result has 150 places, 262 transitions, 3747 flow [2024-06-28 03:36:52,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3747, PETRI_PLACES=150, PETRI_TRANSITIONS=262} [2024-06-28 03:36:52,509 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2024-06-28 03:36:52,509 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 262 transitions, 3747 flow [2024-06-28 03:36:52,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:52,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:52,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:52,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:36:52,510 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:52,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:52,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1089178077, now seen corresponding path program 4 times [2024-06-28 03:36:52,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:52,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902406613] [2024-06-28 03:36:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:52,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:53,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:53,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902406613] [2024-06-28 03:36:53,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902406613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:53,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:53,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:53,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679493278] [2024-06-28 03:36:53,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:53,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:53,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:53,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:53,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:53,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:53,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 262 transitions, 3747 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:53,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:53,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:53,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:57,921 INFO L124 PetriNetUnfolderBase]: 17146/25367 cut-off events. [2024-06-28 03:36:57,921 INFO L125 PetriNetUnfolderBase]: For 1004603/1004625 co-relation queries the response was YES. [2024-06-28 03:36:58,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172377 conditions, 25367 events. 17146/25367 cut-off events. For 1004603/1004625 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 171216 event pairs, 5895 based on Foata normal form. 111/25464 useless extension candidates. Maximal degree in co-relation 172311. Up to 21044 conditions per place. [2024-06-28 03:36:58,253 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 170 selfloop transitions, 149 changer transitions 0/326 dead transitions. [2024-06-28 03:36:58,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 326 transitions, 4915 flow [2024-06-28 03:36:58,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:58,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 228 transitions. [2024-06-28 03:36:58,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-06-28 03:36:58,256 INFO L175 Difference]: Start difference. First operand has 150 places, 262 transitions, 3747 flow. Second operand 8 states and 228 transitions. [2024-06-28 03:36:58,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 326 transitions, 4915 flow [2024-06-28 03:36:59,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 326 transitions, 4674 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:59,618 INFO L231 Difference]: Finished difference. Result has 154 places, 264 transitions, 3900 flow [2024-06-28 03:36:59,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3508, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3900, PETRI_PLACES=154, PETRI_TRANSITIONS=264} [2024-06-28 03:36:59,619 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-06-28 03:36:59,619 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 264 transitions, 3900 flow [2024-06-28 03:36:59,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:59,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:59,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:59,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:36:59,620 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:59,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:59,620 INFO L85 PathProgramCache]: Analyzing trace with hash -583613271, now seen corresponding path program 5 times [2024-06-28 03:36:59,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:59,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376774826] [2024-06-28 03:36:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:59,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:00,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:00,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376774826] [2024-06-28 03:37:00,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376774826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:00,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:00,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:00,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482376290] [2024-06-28 03:37:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:00,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:00,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:00,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:00,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:00,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:37:00,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 264 transitions, 3900 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:00,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:00,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:37:00,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:05,000 INFO L124 PetriNetUnfolderBase]: 17757/26265 cut-off events. [2024-06-28 03:37:05,000 INFO L125 PetriNetUnfolderBase]: For 1062302/1062332 co-relation queries the response was YES. [2024-06-28 03:37:05,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179493 conditions, 26265 events. 17757/26265 cut-off events. For 1062302/1062332 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 178373 event pairs, 6043 based on Foata normal form. 117/26368 useless extension candidates. Maximal degree in co-relation 179425. Up to 21957 conditions per place. [2024-06-28 03:37:05,296 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 173 selfloop transitions, 143 changer transitions 0/323 dead transitions. [2024-06-28 03:37:05,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 323 transitions, 4928 flow [2024-06-28 03:37:05,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-28 03:37:05,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2024-06-28 03:37:05,297 INFO L175 Difference]: Start difference. First operand has 154 places, 264 transitions, 3900 flow. Second operand 8 states and 222 transitions. [2024-06-28 03:37:05,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 323 transitions, 4928 flow [2024-06-28 03:37:06,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 323 transitions, 4580 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:06,617 INFO L231 Difference]: Finished difference. Result has 156 places, 266 transitions, 3936 flow [2024-06-28 03:37:06,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=3552, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3936, PETRI_PLACES=156, PETRI_TRANSITIONS=266} [2024-06-28 03:37:06,618 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 102 predicate places. [2024-06-28 03:37:06,618 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 266 transitions, 3936 flow [2024-06-28 03:37:06,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:06,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:06,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:06,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:37:06,619 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:37:06,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:06,619 INFO L85 PathProgramCache]: Analyzing trace with hash -738211735, now seen corresponding path program 1 times [2024-06-28 03:37:06,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:06,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357578894] [2024-06-28 03:37:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:06,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:07,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:07,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:07,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357578894] [2024-06-28 03:37:07,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357578894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:07,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:07,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:07,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129886987] [2024-06-28 03:37:07,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:07,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:07,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:07,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:07,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:07,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:37:07,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 266 transitions, 3936 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:07,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:07,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:37:07,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand